From bobw2sj at gmail.com  Mon Sep  4 23:22:09 2017
From: bobw2sj at gmail.com (Bob Fischer)
Date: Mon, 4 Sep 2017 23:22:09 -0400
Subject: [Rover] Reminder: W2EA High Knob,
	FN21KH - September 2017 Contest Operation!
Message-ID: <CALQo5CTYYYrJ4uLVff1=7pGBtu_EN4H7hYhBr3NK5G5vyNoTTw@mail.gmail.com>

Hello VHF+ Contest Enthusiasts!

What are you doing next weekend September 9th,10th, & 11th from 1800z
Saturday to 0259z Monday?

The South Jersey Mountain Toppers ARC consisting of several Pack Rats and
SJRA members will once again activate High Knob in grid FN21KH in the
Poconos, operating Multi-op as W2EA for the September Contest. We will be
at 2047 feet ASL on bands 50 MHz thru 10 GHz with good antennas and power.
We have made many improvements this year, adding at least double the
elements on 903 thru 3456 Mhz. In addition, all micros including 5 & 10 GHz
will be on a 50ft tower to improve our path to many of you South / SW of
the mountain.

We know that some of you may only be on for a short time, so we will be
monitoring the ON4KST chat page Region 2, 144 & 432 as well as Ping Jockey
Client. We are generally on 50.133 and 144.185 + or - QRM. We will have
WSJT MSK144 on 6 & 2 meters as well as FT-8 on 6 meters. Our contact
numbers for skeds on the mountain are 484-614-1505 <(484)%20614-1505>
or 609-440-2916, text please or call if necessary.

Those of you who have been to a remote location in June or September know
it takes quite an effort to plan, set up, operate, and disassemble a
mountaintop station. We look forward to working you and giving you a new
grid on many bands!

Tnx es 73,

Bob, W2SJ & Bill, K3EGE

For the W2EA team

From mailserver at jonz.net  Wed Sep  6 13:35:36 2017
From: mailserver at jonz.net (Jonesy W3DHJ)
Date: Wed, 6 Sep 2017 11:35:36 -0600 (MDT)
Subject: [Rover] W3DHJ/r DM77, DM78, DM87, DM88
Message-ID: <alpine.BSF.2.20.1709061111140.6849@icf.wbam.arg>

I will be activating the 4 grids squares in S.E. Colorado
(again) this weekend:  DM77, DM78, DM87, & DM88.

Limited Rover category: 6M , 2M , 70cm.
Old School:  SSB and crusty CW.

A wee bit more:

	https://w3dhj.net/vhfrover_plans.php

73 ES GD DX
Jonesy
-- 
  Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
   Pueblo, Colorado  |  @         | Jonesy |     __
    38.238N 104.547W |   jonz.net | DM78rf | 73  SK

From mailserver at jonz.net  Wed Sep  6 13:56:08 2017
From: mailserver at jonz.net (Jonesy W3DHJ)
Date: Wed, 6 Sep 2017 11:56:08 -0600 (MDT)
Subject: [Rover] Additional risks to Rovers
Message-ID: <alpine.BSF.2.20.1709061151480.6849@icf.wbam.arg>

As if it wasn't risky enough to be a Rover:

	http://www.bbc.com/news/uk-england-essex-41179132

73
Jonesy
-- 
  Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
   Pueblo, Colorado  |  @         | Jonesy |     __
    38.238N 104.547W |   jonz.net | DM78rf | 73  SK

From waisean at gmail.com  Wed Sep  6 14:18:16 2017
From: waisean at gmail.com (Sean Waite)
Date: Wed, 06 Sep 2017 18:18:16 +0000
Subject: [Rover] Additional risks to Rovers
In-Reply-To: <alpine.BSF.2.20.1709061151480.6849@icf.wbam.arg>
References: <alpine.BSF.2.20.1709061151480.6849@icf.wbam.arg>
Message-ID: <CAGz_XJw04oG3yrr+sr-281T5OZQiYKvNc5oT25Zd6GX=DppcPQ@mail.gmail.com>

Usually it's a slightly different kind of gas that builds up in the rover

On Wed, Sep 6, 2017, 13:56 Jonesy W3DHJ via Rover <rover at mailman.qth.net>
wrote:

> As if it wasn't risky enough to be a Rover:
>
>         http://www.bbc.com/news/uk-england-essex-41179132
>
> 73
> Jonesy
> --
>   Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
>    Pueblo, Colorado  |  @         | Jonesy |     __
>     38.238N 104.547W |   jonz.net | DM78rf | 73  SK
> ______________________________________________________________
> Rover mailing list
> Home: http://mailman.qth.net/mailman/listinfo/rover
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Rover at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

From rick1ds at hotmail.com  Wed Sep 13 11:52:19 2017
From: rick1ds at hotmail.com (Rick R)
Date: Wed, 13 Sep 2017 15:52:19 +0000
Subject: [Rover] Mid-Atl States VHF Conf--1 week left for early bird discount
Message-ID: <BLUPR19MB0113D1AFE3F5BFDFFB2E759BFA6E0@BLUPR19MB0113.namprd19.prod.outlook.com>

MID-ATLANTIC STATES  VHF CONFERENCE  Oct 6-7-8, 2017

Hosted by the Mt Airy VHF Radio Club
Holiday Inn-Bensalem-Philadelphia      3327 Street Rd, Bensalem, PA
(215) 639-9100 Early Bird rooms $99+tax
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Register on-line  at   www.packratvhf.com<http://www.packratvhf.com/>
Conference Early Bird** Registration only $40
Saturday Evening Early Bird Banquet $40
Early Bird discount available only until Sept 20.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Friday Afternoon seminar ?Station Automation?
Friday evening hospitality and table-top selling
Saturday conference presentations & auctions
Registration includes pizza lunch and snacks
Rohde & Schwarz Technical Testing Room
Saturday evening Banquet buffet dinner with door prizes
You must be registered and paid for the conference and banquet to be eligible for door prizes
Sunday morning free outdoor mini-flea market
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Questions? contact  rick1ds at hotmail.com


From mailserver at jonz.net  Wed Sep 13 23:20:57 2017
From: mailserver at jonz.net (Jonesy W3DHJ)
Date: Wed, 13 Sep 2017 21:20:57 -0600 (MDT)
Subject: [Rover] [VHFcontesting] The digital modes and the Sept contest
In-Reply-To: <CALv-U6VqY1jnub7JWBbGTqHOBu3TB5tyFm=NhLBH2S-8CuoqGA@mail.gmail.com>
References: <CALv-U6VqY1jnub7JWBbGTqHOBu3TB5tyFm=NhLBH2S-8CuoqGA@mail.gmail.com>
Message-ID: <alpine.BSF.2.20.1709132046360.42904@icf.wbam.arg>

Cross-posted to rover at mailman.qth.net where it's more OT....

On Wed, 13 Sep 2017, Alan Larson wrote:

>Zack wrote:
>> My VHF operating is almost entirely portable. I like to go to local
>> hills (there are some around here!) I use a deep-cycle marine battery
>> as a power source. Except for very brief operations, running the
>> station and a computer from the battery runs it down too fast. So I
>> don't even bother taking a computer along. I log on paper and enter it
>> into the computer when I get home later.
>
>  I also do most of my VHF operating portable.  I have used battery
>power, but I find that the battery runs down too fast with just the
>radios.  As the voltage starts to sag, the IC-910 drops off (powers
>down) during transmit.  Even at reduced power, the battery life is
>limited.  When I use a computer, in such a situation, I ran it from
>its own battery.
>
>  Some have suggested solar power.  I have done it, and it feels nice to
>be using silent solar power, but even a 100 watt panel is only about 6
>amps of current.

See		https://w3dhj.net/images/2016_ARRL_SEP_VHF.jpg

It's just a Harbor Freight 45 watt solar package (3x 15 watt panels)
that I bolted to top and bottom aluminum box tubing (oxymoron?).
The roof rack cross rails are after market -- not the original Subaru.
There are hinges on both sides with removable hinge pins.  It's bog
simple to prop up when I get to an operating site, and bog simple to
latch down when I leave.

Yes, there is road noise.  We all have to suffer somewhat for our hobby.

I run rover with just that and the vehicle battery.  I operate an
IC-706: 6M 100W and 2M w/a 120W amp, and an antique IC-471 432/446 mcs
at some 70W.  During the daylight hours my battery rarely drops below 12
volts -- even during long runs when 6M opens.  I use an N8XJK 12 Volt
Boost Regulator set to hold my operating volts up at 13V for the IC-706
and IC-471.  The 2M amp runs straight off the battery posts.

Important issue was found to be independent 12 ga. wire from solar
charger to the battery posts, independent 12 ga. wire from the battery
posts to the N8XJK 12 Volt Boost Regulator (for the IC-706 and IC-471),
and independent 10 ga. wire from the battery posts to the 2M amp.
Don't skimp on that wiring.

After sunset, I operate until the battery drops to somewhere around 11V
and then start the engine (and usually mobile back home and go to bed.)

No computer, no cellphone charger, no APRS, no CW keyer, no voice keyer.
Old school: KISS, SSB and crusty CW

Way More at:
		https://w3dhj.net/vhfrover.php
73
Jonesy
-- 
  Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
   Pueblo, Colorado  |  @         | Jonesy |     __
    38.238N 104.547W |   jonz.net | DM78rf | 73  SK

From rick1ds at hotmail.com  Fri Sep 15 21:46:41 2017
From: rick1ds at hotmail.com (Rick R)
Date: Sat, 16 Sep 2017 01:46:41 +0000
Subject: [Rover] Mid-Atlantic States VHF Conf--4d left for early bird
	discount
Message-ID: <BLUPR19MB0113160F1608F4CDE18E0277FA6D0@BLUPR19MB0113.namprd19.prod.outlook.com>

Hosted by the Mt Airy VHF Radio Club
Holiday Inn-Bensalem-Philadelphia      3327 Street Rd, Bensalem, PA
(215) 639-9100 Early Bird rooms $99+tax
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
All info and Register on-line  at   www.packratvhf.com<http://www.packratvhf.com/>
Conference Early Bird** Registration only $40
Saturday Evening Early Bird Banquet $40
Early Bird discount available only until Sept 20.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Friday Afternoon seminar ?Station Automation?
Friday evening hospitality and table-top selling
Saturday conference presentations & auctions
Registration includes pizza lunch and snacks
Rohde & Schwarz Technical Testing Room
Saturday evening Banquet buffet dinner with door prizes
You must be registered and paid for the conference and banquet to be eligible for door prizes
Sunday morning free outdoor mini-flea market


From waisean at gmail.com  Thu Sep 21 16:17:48 2017
From: waisean at gmail.com (Sean Waite)
Date: Thu, 21 Sep 2017 20:17:48 +0000
Subject: [Rover] Interstation Interference in Multi-Op Rovers
Message-ID: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>

How does everyone handle this?

Our setup is as follows:
Front seat station, 2m and 70cm
Rear seat station, 6m and 1.25m

The front station uses a drive-on mast with the 2 and 70cm antennas on it,
the rear station uses a hitch mount mast with the 6 and 1.25 antennas on
it.

The 6m station has a bandpass filter and the 1.25 station is on a triplexer
that kinda sorta almost (not really) filters out some of the crud. We're
planning a bandpass filter on the 2m station, but it hasn't happened yet,
and I'll be building up some coax stubs (likely 6m and maybe a 70cm
bandstop to put on the 2m station).

Depending on which direction the antennas are aimed, we get somewhere
between a faint amount of QRM up to rendering it useless on 2m when 6m
transmits. I think some of the filtering will help, but when you are
transmitting 100W of 6m into a moxon and it's aimed right up the rear end
of the 2m yagi I'm unsure how much that will do. We got around it somewhat
in the September rove by calling CQ at the same time.

Any other recommendations here? One idea would be to bond the grounds on
all of the radios together, but I'm leaning towards that being worthless.
We also could put 6 and 2 at the same station, but we're hectic enough at
times that whichever op was on that station would be pretty busy. It might
also be a bit boring on the 222/432 station, but maybe we'd grab a few more
random contacts on there by calling CQ. The preference would be to keep the
band split unless it's truly hurting us.

Thanks!

73 de Sean WA1TE (K1SIG/R)

From K4IDC at comcast.net  Thu Sep 21 18:26:24 2017
From: K4IDC at comcast.net (Robin Midgett)
Date: Thu, 21 Sep 2017 17:26:24 -0500
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
Message-ID: <CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>

I don't know how "everyone" handles this, but having had the same problem
20 years ago, I feel your pain. We (NT4L) never did address the issue due
to life circumstances ending our roving adventures.
What you're getting is most likely a harmonic from the 6m transmitter that
lands in the pass band of the 2m Rx.
For reference:
http://forums.qrz.com/index.php?threads/vhf-notch-filter-with-coax.408931/

http://www.repeater-builder.com/antenna/heliax-6m-filter.html
(note the comment about the 'tuning rod stopped turning slightly below 51
MHz'); you might try to find one of those
Telewave 45 MHz cans, but it'll be BIG, probably much bigger than you want
to haul around in your rover vehicle.

It seems that one of the tuned stubs from large coax would be worthwhile.
Configure one as a narrow band pass on the 6m Tx, and perhaps another as a
notch filter on the 2m Rx.

https://is.gd/yHBWkd




On Thu, Sep 21, 2017 at 3:17 PM, Sean Waite <waisean at gmail.com> wrote:

> How does everyone handle this?
>
> Our setup is as follows:
> Front seat station, 2m and 70cm
> Rear seat station, 6m and 1.25m
>
> The front station uses a drive-on mast with the 2 and 70cm antennas on it,
> the rear station uses a hitch mount mast with the 6 and 1.25 antennas on
> it.
>
> The 6m station has a bandpass filter and the 1.25 station is on a triplexer
> that kinda sorta almost (not really) filters out some of the crud. We're
> planning a bandpass filter on the 2m station, but it hasn't happened yet,
> and I'll be building up some coax stubs (likely 6m and maybe a 70cm
> bandstop to put on the 2m station).
>
> Depending on which direction the antennas are aimed, we get somewhere
> between a faint amount of QRM up to rendering it useless on 2m when 6m
> transmits. I think some of the filtering will help, but when you are
> transmitting 100W of 6m into a moxon and it's aimed right up the rear end
> of the 2m yagi I'm unsure how much that will do. We got around it somewhat
> in the September rove by calling CQ at the same time.
>
> Any other recommendations here? One idea would be to bond the grounds on
> all of the radios together, but I'm leaning towards that being worthless.
> We also could put 6 and 2 at the same station, but we're hectic enough at
> times that whichever op was on that station would be pretty busy. It might
> also be a bit boring on the 222/432 station, but maybe we'd grab a few more
> random contacts on there by calling CQ. The preference would be to keep the
> band split unless it's truly hurting us.
>
> Thanks!
>
> 73 de Sean WA1TE (K1SIG/R)
> ______________________________________________________________
> Rover mailing list
> Home: http://mailman.qth.net/mailman/listinfo/rover
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Rover at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

From waisean at gmail.com  Thu Sep 21 19:16:56 2017
From: waisean at gmail.com (Sean Waite)
Date: Thu, 21 Sep 2017 23:16:56 +0000
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
Message-ID: <CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>

Thanks, I suspected it might be something like that. We get some lighter
interference on 70cn as well, which is a few more harmonics up.

My worry with the coax notch filters is bandwidth - 150MHz is pretty close
to 2m. I suppose using higher quality coax/heliax and tuning to 51MHz would
help with that.

The rigidity of heliax might make it rough in the rover, a 5' long chunk is
going to be interesting g to manage and will likely go somewhere outside
the car on the ground.

Thanks for the tips, I'll read up and experiment.

Sean WA1TE





On Thu, Sep 21, 2017, 18:26 Robin Midgett <K4IDC at comcast.net> wrote:

> I don't know how "everyone" handles this, but having had the same problem
> 20 years ago, I feel your pain. We (NT4L) never did address the issue due
> to life circumstances ending our roving adventures.
> What you're getting is most likely a harmonic from the 6m transmitter that
> lands in the pass band of the 2m Rx.
> For reference:
> http://forums.qrz.com/index.php?threads/vhf-notch-filter-with-coax.408931/
>
> http://www.repeater-builder.com/antenna/heliax-6m-filter.html
> (note the comment about the 'tuning rod stopped turning slightly below 51
> MHz'); you might try to find one of those
> Telewave 45 MHz cans, but it'll be BIG, probably much bigger than you want
> to haul around in your rover vehicle.
>
> It seems that one of the tuned stubs from large coax would be worthwhile.
> Configure one as a narrow band pass on the 6m Tx, and perhaps another as a
> notch filter on the 2m Rx.
>
> https://is.gd/yHBWkd
>
>
>
>
> On Thu, Sep 21, 2017 at 3:17 PM, Sean Waite <waisean at gmail.com> wrote:
>
> > How does everyone handle this?
> >
> > Our setup is as follows:
> > Front seat station, 2m and 70cm
> > Rear seat station, 6m and 1.25m
> >
> > The front station uses a drive-on mast with the 2 and 70cm antennas on
> it,
> > the rear station uses a hitch mount mast with the 6 and 1.25 antennas on
> > it.
> >
> > The 6m station has a bandpass filter and the 1.25 station is on a
> triplexer
> > that kinda sorta almost (not really) filters out some of the crud. We're
> > planning a bandpass filter on the 2m station, but it hasn't happened yet,
> > and I'll be building up some coax stubs (likely 6m and maybe a 70cm
> > bandstop to put on the 2m station).
> >
> > Depending on which direction the antennas are aimed, we get somewhere
> > between a faint amount of QRM up to rendering it useless on 2m when 6m
> > transmits. I think some of the filtering will help, but when you are
> > transmitting 100W of 6m into a moxon and it's aimed right up the rear end
> > of the 2m yagi I'm unsure how much that will do. We got around it
> somewhat
> > in the September rove by calling CQ at the same time.
> >
> > Any other recommendations here? One idea would be to bond the grounds on
> > all of the radios together, but I'm leaning towards that being worthless.
> > We also could put 6 and 2 at the same station, but we're hectic enough at
> > times that whichever op was on that station would be pretty busy. It
> might
> > also be a bit boring on the 222/432 station, but maybe we'd grab a few
> more
> > random contacts on there by calling CQ. The preference would be to keep
> the
> > band split unless it's truly hurting us.
> >
> > Thanks!
> >
> > 73 de Sean WA1TE (K1SIG/R)
> > ______________________________________________________________
> > Rover mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/rover
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Rover at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> ______________________________________________________________
> Rover mailing list
> Home: http://mailman.qth.net/mailman/listinfo/rover
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Rover at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

From mailserver at jonz.net  Thu Sep 21 21:21:33 2017
From: mailserver at jonz.net (Jonesy W3DHJ)
Date: Thu, 21 Sep 2017 19:21:33 -0600 (MDT)
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
	<CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
Message-ID: <alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>

On Thu, 21 Sep 2017, Sean Waite wrote:

>Thanks, I suspected it might be something like that. We get some lighter
>interference on 70cn as well, which is a few more harmonics up.
>
>My worry with the coax notch filters is bandwidth - 150MHz is pretty close
>to 2m. I suppose using higher quality coax/heliax and tuning to 51MHz would
>help with that.
>
>The rigidity of heliax might make it rough in the rover, a 5' long chunk is
>going to be interesting g to manage and will likely go somewhere outside
>the car on the ground.

Use 3/4" cable TV "hardline" -- use it as a 144.2 mcs suck-out trap on
the 6M rig -- an open 1/4 wave at ~~15" or a shorted 1/2 wave at ~~32".

		https://w3dhj.net/catvhardline.html

If you try to trap the 6M rig (50.130 mcs) at the 2M rig, you run into
the problem of the 6M trap working just as nicely at 150.39 mcs -- which
may be too close, Q-wise, for the 2M rig.

Another issue - besides just "interference" - is the possibility of
blowing out the front end of the 2M receiver with simply the
overpowering by the 6M rig.  I blew out a 2M GasFET preamp because
my 6M halo is mounted between my stacked pair of 2M halos.
Sigh...  I just do without that GasFET preamp now.
I can certainly hear anyone that can hear me!  HI!HI!

Jonesy
-- 
  Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
   Pueblo, Colorado  |  @         | Jonesy |     __
    38.238N 104.547W |   jonz.net | DM78rf | 73  SK

From waisean at gmail.com  Fri Sep 22 14:38:07 2017
From: waisean at gmail.com (Sean Waite)
Date: Fri, 22 Sep 2017 18:38:07 +0000
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
	<CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
	<alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>
Message-ID: <CAGz_XJwmatahimfKoLRJ20RfjMWXDuGXRJeOKC=e+kgCGhDJpw@mail.gmail.com>

Hi Jonesy,

I don't know why my brain stuck on blocking the 6m signal at the 2m radio.
It makes much more sense to do block the ~150MHz harmonic at the 6m radio.
Any idea how much difference a lower Q piece of coax - either thinner
heliax or something like LMR400 - would change the results? I gather it
makes them a little more broadband, but I don't know for sure. CATV cable
is great but can be a little hard to get a hold of.

We were getting some minor interference on  432 as well. I might have to
look into a stub there as well.

Thanks,
Sean WA1TE

On Thu, Sep 21, 2017 at 9:21 PM Jonesy W3DHJ <mailserver at jonz.net> wrote:

> On Thu, 21 Sep 2017, Sean Waite wrote:
>
> >Thanks, I suspected it might be something like that. We get some lighter
> >interference on 70cn as well, which is a few more harmonics up.
> >
> >My worry with the coax notch filters is bandwidth - 150MHz is pretty close
> >to 2m. I suppose using higher quality coax/heliax and tuning to 51MHz
> would
> >help with that.
> >
> >The rigidity of heliax might make it rough in the rover, a 5' long chunk
> is
> >going to be interesting g to manage and will likely go somewhere outside
> >the car on the ground.
>
> Use 3/4" cable TV "hardline" -- use it as a 144.2 mcs suck-out trap on
> the 6M rig -- an open 1/4 wave at ~~15" or a shorted 1/2 wave at ~~32".
>
>                 https://w3dhj.net/catvhardline.html
>
> If you try to trap the 6M rig (50.130 mcs) at the 2M rig, you run into
> the problem of the 6M trap working just as nicely at 150.39 mcs -- which
> may be too close, Q-wise, for the 2M rig.
>
> Another issue - besides just "interference" - is the possibility of
> blowing out the front end of the 2M receiver with simply the
> overpowering by the 6M rig.  I blew out a 2M GasFET preamp because
> my 6M halo is mounted between my stacked pair of 2M halos.
> Sigh...  I just do without that GasFET preamp now.
> I can certainly hear anyone that can hear me!  HI!HI!
>
> Jonesy
> --
>   Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
>    Pueblo, Colorado  |  @         | Jonesy |     __
>     38.238N 104.547W |   jonz.net | DM78rf | 73  SK
>

From K4IDC at comcast.net  Fri Sep 22 14:47:24 2017
From: K4IDC at comcast.net (Robin Midgett)
Date: Fri, 22 Sep 2017 13:47:24 -0500
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAGz_XJwmatahimfKoLRJ20RfjMWXDuGXRJeOKC=e+kgCGhDJpw@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
	<CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
	<alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>
	<CAGz_XJwmatahimfKoLRJ20RfjMWXDuGXRJeOKC=e+kgCGhDJpw@mail.gmail.com>
Message-ID: <CAJHj7F6GK1uNec9u+=Tt4VCno67x-nLip2DBqZhVdnGgPsO0cw@mail.gmail.com>

I have scads of CATV hard line. I'm happy to cut a section & send it to
you. 1/2", 3/4" & 1" diameters.

On Fri, Sep 22, 2017 at 1:38 PM, Sean Waite <waisean at gmail.com> wrote:

> Hi Jonesy,
>
> I don't know why my brain stuck on blocking the 6m signal at the 2m radio.
> It makes much more sense to do block the ~150MHz harmonic at the 6m radio.
> Any idea how much difference a lower Q piece of coax - either thinner
> heliax or something like LMR400 - would change the results? I gather it
> makes them a little more broadband, but I don't know for sure. CATV cable
> is great but can be a little hard to get a hold of.
>
> We were getting some minor interference on  432 as well. I might have to
> look into a stub there as well.
>
> Thanks,
> Sean WA1TE
>
> On Thu, Sep 21, 2017 at 9:21 PM Jonesy W3DHJ <mailserver at jonz.net> wrote:
>
> > On Thu, 21 Sep 2017, Sean Waite wrote:
> >
> > >Thanks, I suspected it might be something like that. We get some lighter
> > >interference on 70cn as well, which is a few more harmonics up.
> > >
> > >My worry with the coax notch filters is bandwidth - 150MHz is pretty
> close
> > >to 2m. I suppose using higher quality coax/heliax and tuning to 51MHz
> > would
> > >help with that.
> > >
> > >The rigidity of heliax might make it rough in the rover, a 5' long chunk
> > is
> > >going to be interesting g to manage and will likely go somewhere outside
> > >the car on the ground.
> >
> > Use 3/4" cable TV "hardline" -- use it as a 144.2 mcs suck-out trap on
> > the 6M rig -- an open 1/4 wave at ~~15" or a shorted 1/2 wave at ~~32".
> >
> >                 https://w3dhj.net/catvhardline.html
> >
> > If you try to trap the 6M rig (50.130 mcs) at the 2M rig, you run into
> > the problem of the 6M trap working just as nicely at 150.39 mcs -- which
> > may be too close, Q-wise, for the 2M rig.
> >
> > Another issue - besides just "interference" - is the possibility of
> > blowing out the front end of the 2M receiver with simply the
> > overpowering by the 6M rig.  I blew out a 2M GasFET preamp because
> > my 6M halo is mounted between my stacked pair of 2M halos.
> > Sigh...  I just do without that GasFET preamp now.
> > I can certainly hear anyone that can hear me!  HI!HI!
> >
> > Jonesy
> > --
> >   Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
> >    Pueblo, Colorado  |  @         | Jonesy |     __
> >     38.238N 104.547W |   jonz.net | DM78rf | 73  SK
> >
> ______________________________________________________________
> Rover mailing list
> Home: http://mailman.qth.net/mailman/listinfo/rover
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Rover at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

From K4IDC at comcast.net  Fri Sep 22 14:48:36 2017
From: K4IDC at comcast.net (Robin Midgett)
Date: Fri, 22 Sep 2017 13:48:36 -0500
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAJHj7F6GK1uNec9u+=Tt4VCno67x-nLip2DBqZhVdnGgPsO0cw@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
	<CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
	<alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>
	<CAGz_XJwmatahimfKoLRJ20RfjMWXDuGXRJeOKC=e+kgCGhDJpw@mail.gmail.com>
	<CAJHj7F6GK1uNec9u+=Tt4VCno67x-nLip2DBqZhVdnGgPsO0cw@mail.gmail.com>
Message-ID: <CAJHj7F5R--++TZ=QN3LYpdCWW8g7C+0WuC3_w_1gbeO3kb+GwQ@mail.gmail.com>

I also have short sections of 7/8" & 1-5/8" available.

On Fri, Sep 22, 2017 at 1:47 PM, Robin Midgett <K4IDC at comcast.net> wrote:

> I have scads of CATV hard line. I'm happy to cut a section & send it to
> you. 1/2", 3/4" & 1" diameters.
>
> On Fri, Sep 22, 2017 at 1:38 PM, Sean Waite <waisean at gmail.com> wrote:
>
>> Hi Jonesy,
>>
>> I don't know why my brain stuck on blocking the 6m signal at the 2m radio.
>> It makes much more sense to do block the ~150MHz harmonic at the 6m radio.
>> Any idea how much difference a lower Q piece of coax - either thinner
>> heliax or something like LMR400 - would change the results? I gather it
>> makes them a little more broadband, but I don't know for sure. CATV cable
>> is great but can be a little hard to get a hold of.
>>
>> We were getting some minor interference on  432 as well. I might have to
>> look into a stub there as well.
>>
>> Thanks,
>> Sean WA1TE
>>
>> On Thu, Sep 21, 2017 at 9:21 PM Jonesy W3DHJ <mailserver at jonz.net> wrote:
>>
>> > On Thu, 21 Sep 2017, Sean Waite wrote:
>> >
>> > >Thanks, I suspected it might be something like that. We get some
>> lighter
>> > >interference on 70cn as well, which is a few more harmonics up.
>> > >
>> > >My worry with the coax notch filters is bandwidth - 150MHz is pretty
>> close
>> > >to 2m. I suppose using higher quality coax/heliax and tuning to 51MHz
>> > would
>> > >help with that.
>> > >
>> > >The rigidity of heliax might make it rough in the rover, a 5' long
>> chunk
>> > is
>> > >going to be interesting g to manage and will likely go somewhere
>> outside
>> > >the car on the ground.
>> >
>> > Use 3/4" cable TV "hardline" -- use it as a 144.2 mcs suck-out trap on
>> > the 6M rig -- an open 1/4 wave at ~~15" or a shorted 1/2 wave at ~~32".
>> >
>> >                 https://w3dhj.net/catvhardline.html
>> >
>> > If you try to trap the 6M rig (50.130 mcs) at the 2M rig, you run into
>> > the problem of the 6M trap working just as nicely at 150.39 mcs -- which
>> > may be too close, Q-wise, for the 2M rig.
>> >
>> > Another issue - besides just "interference" - is the possibility of
>> > blowing out the front end of the 2M receiver with simply the
>> > overpowering by the 6M rig.  I blew out a 2M GasFET preamp because
>> > my 6M halo is mounted between my stacked pair of 2M halos.
>> > Sigh...  I just do without that GasFET preamp now.
>> > I can certainly hear anyone that can hear me!  HI!HI!
>> >
>> > Jonesy
>> > --
>> >   Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
>> >    Pueblo, Colorado  |  @         | Jonesy |     __
>> >     38.238N 104.547W |   jonz.net | DM78rf | 73  SK
>> >
>> ______________________________________________________________
>> Rover mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/rover
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Rover at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>
>

From waisean at gmail.com  Mon Sep 25 23:58:50 2017
From: waisean at gmail.com (Sean Waite)
Date: Tue, 26 Sep 2017 03:58:50 +0000
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAJHj7F6GK1uNec9u+=Tt4VCno67x-nLip2DBqZhVdnGgPsO0cw@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
	<CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
	<alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>
	<CAGz_XJwmatahimfKoLRJ20RfjMWXDuGXRJeOKC=e+kgCGhDJpw@mail.gmail.com>
	<CAJHj7F6GK1uNec9u+=Tt4VCno67x-nLip2DBqZhVdnGgPsO0cw@mail.gmail.com>
Message-ID: <CAGz_XJyCv9F_mZE=gCm=gQgKzuF6eSYxQ7jrE4YPdgpdXhPWbg@mail.gmail.com>

Hi Robin,

That would be great! It sounds like the 3/4 inch stuff works well for
stubs. I don't really have a concept of how big the stuff is, the heaviest
cable I've used so far is LMR-400. I'd appreciate it if we could get a
little extra so that I can practice making connectors for it, it doesn't
appear to be too difficult but sometimes "ham" applies to my fists as well
as my hobby.

Would you want anything for the cable or for shipping?

Thanks and 73,
Sean

On Fri, Sep 22, 2017 at 2:47 PM Robin Midgett <K4IDC at comcast.net> wrote:

> I have scads of CATV hard line. I'm happy to cut a section & send it to
> you. 1/2", 3/4" & 1" diameters.
>
> On Fri, Sep 22, 2017 at 1:38 PM, Sean Waite <waisean at gmail.com> wrote:
>
> > Hi Jonesy,
> >
> > I don't know why my brain stuck on blocking the 6m signal at the 2m
> radio.
> > It makes much more sense to do block the ~150MHz harmonic at the 6m
> radio.
> > Any idea how much difference a lower Q piece of coax - either thinner
> > heliax or something like LMR400 - would change the results? I gather it
> > makes them a little more broadband, but I don't know for sure. CATV cable
> > is great but can be a little hard to get a hold of.
> >
> > We were getting some minor interference on  432 as well. I might have to
> > look into a stub there as well.
> >
> > Thanks,
> > Sean WA1TE
> >
> > On Thu, Sep 21, 2017 at 9:21 PM Jonesy W3DHJ <mailserver at jonz.net>
> wrote:
> >
> > > On Thu, 21 Sep 2017, Sean Waite wrote:
> > >
> > > >Thanks, I suspected it might be something like that. We get some
> lighter
> > > >interference on 70cn as well, which is a few more harmonics up.
> > > >
> > > >My worry with the coax notch filters is bandwidth - 150MHz is pretty
> > close
> > > >to 2m. I suppose using higher quality coax/heliax and tuning to 51MHz
> > > would
> > > >help with that.
> > > >
> > > >The rigidity of heliax might make it rough in the rover, a 5' long
> chunk
> > > is
> > > >going to be interesting g to manage and will likely go somewhere
> outside
> > > >the car on the ground.
> > >
> > > Use 3/4" cable TV "hardline" -- use it as a 144.2 mcs suck-out trap on
> > > the 6M rig -- an open 1/4 wave at ~~15" or a shorted 1/2 wave at ~~32".
> > >
> > >                 https://w3dhj.net/catvhardline.html
> > >
> > > If you try to trap the 6M rig (50.130 mcs) at the 2M rig, you run into
> > > the problem of the 6M trap working just as nicely at 150.39 mcs --
> which
> > > may be too close, Q-wise, for the 2M rig.
> > >
> > > Another issue - besides just "interference" - is the possibility of
> > > blowing out the front end of the 2M receiver with simply the
> > > overpowering by the 6M rig.  I blew out a 2M GasFET preamp because
> > > my 6M halo is mounted between my stacked pair of 2M halos.
> > > Sigh...  I just do without that GasFET preamp now.
> > > I can certainly hear anyone that can hear me!  HI!HI!
> > >
> > > Jonesy
> > > --
> > >   Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
> > >    Pueblo, Colorado  |  @         | Jonesy |     __
> > >     38.238N 104.547W |   jonz.net | DM78rf | 73  SK
> > >
> > ______________________________________________________________
> > Rover mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/rover
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Rover at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> ______________________________________________________________
> Rover mailing list
> Home: http://mailman.qth.net/mailman/listinfo/rover
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Rover at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

From K4IDC at comcast.net  Tue Sep 26 13:14:50 2017
From: K4IDC at comcast.net (Robin Midgett)
Date: Tue, 26 Sep 2017 12:14:50 -0500
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAGz_XJyCv9F_mZE=gCm=gQgKzuF6eSYxQ7jrE4YPdgpdXhPWbg@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
	<CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
	<alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>
	<CAGz_XJwmatahimfKoLRJ20RfjMWXDuGXRJeOKC=e+kgCGhDJpw@mail.gmail.com>
	<CAJHj7F6GK1uNec9u+=Tt4VCno67x-nLip2DBqZhVdnGgPsO0cw@mail.gmail.com>
	<CAGz_XJyCv9F_mZE=gCm=gQgKzuF6eSYxQ7jrE4YPdgpdXhPWbg@mail.gmail.com>
Message-ID: <CAJHj7F5unff9hk94B9-Lgcjc0pqyw2xtEq4cDYOCkHmV2WJF7w@mail.gmail.com>

What length do you require, and how many of that length?
Working with the 3/4" CATV line is easy; a SO-239 barrel connector will fit
easily once you hollow out the dielectric foam. Use a hose clamp to connect
the shield to the barrel.
http://amfone.net/Amforum/index.php?topic=29007.0;wap2, or Google "CATV
line ham radio"

You cover shipping, cable is free.

On Mon, Sep 25, 2017 at 10:58 PM, Sean Waite <waisean at gmail.com> wrote:

> Hi Robin,
>
> That would be great! It sounds like the 3/4 inch stuff works well for
> stubs. I don't really have a concept of how big the stuff is, the heaviest
> cable I've used so far is LMR-400. I'd appreciate it if we could get a
> little extra so that I can practice making connectors for it, it doesn't
> appear to be too difficult but sometimes "ham" applies to my fists as well
> as my hobby.
>
> Would you want anything for the cable or for shipping?
>
> Thanks and 73,
> Sean
>
> On Fri, Sep 22, 2017 at 2:47 PM Robin Midgett <K4IDC at comcast.net> wrote:
>
> > I have scads of CATV hard line. I'm happy to cut a section & send it to
> > you. 1/2", 3/4" & 1" diameters.
> >
> > On Fri, Sep 22, 2017 at 1:38 PM, Sean Waite <waisean at gmail.com> wrote:
> >
> > > Hi Jonesy,
> > >
> > > I don't know why my brain stuck on blocking the 6m signal at the 2m
> > radio.
> > > It makes much more sense to do block the ~150MHz harmonic at the 6m
> > radio.
> > > Any idea how much difference a lower Q piece of coax - either thinner
> > > heliax or something like LMR400 - would change the results? I gather it
> > > makes them a little more broadband, but I don't know for sure. CATV
> cable
> > > is great but can be a little hard to get a hold of.
> > >
> > > We were getting some minor interference on  432 as well. I might have
> to
> > > look into a stub there as well.
> > >
> > > Thanks,
> > > Sean WA1TE
> > >
> > > On Thu, Sep 21, 2017 at 9:21 PM Jonesy W3DHJ <mailserver at jonz.net>
> > wrote:
> > >
> > > > On Thu, 21 Sep 2017, Sean Waite wrote:
> > > >
> > > > >Thanks, I suspected it might be something like that. We get some
> > lighter
> > > > >interference on 70cn as well, which is a few more harmonics up.
> > > > >
> > > > >My worry with the coax notch filters is bandwidth - 150MHz is pretty
> > > close
> > > > >to 2m. I suppose using higher quality coax/heliax and tuning to
> 51MHz
> > > > would
> > > > >help with that.
> > > > >
> > > > >The rigidity of heliax might make it rough in the rover, a 5' long
> > chunk
> > > > is
> > > > >going to be interesting g to manage and will likely go somewhere
> > outside
> > > > >the car on the ground.
> > > >
> > > > Use 3/4" cable TV "hardline" -- use it as a 144.2 mcs suck-out trap
> on
> > > > the 6M rig -- an open 1/4 wave at ~~15" or a shorted 1/2 wave at
> ~~32".
> > > >
> > > >                 https://w3dhj.net/catvhardline.html
> > > >
> > > > If you try to trap the 6M rig (50.130 mcs) at the 2M rig, you run
> into
> > > > the problem of the 6M trap working just as nicely at 150.39 mcs --
> > which
> > > > may be too close, Q-wise, for the 2M rig.
> > > >
> > > > Another issue - besides just "interference" - is the possibility of
> > > > blowing out the front end of the 2M receiver with simply the
> > > > overpowering by the 6M rig.  I blew out a 2M GasFET preamp because
> > > > my 6M halo is mounted between my stacked pair of 2M halos.
> > > > Sigh...  I just do without that GasFET preamp now.
> > > > I can certainly hear anyone that can hear me!  HI!HI!
> > > >
> > > > Jonesy
> > > > --
> > > >   Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
> > > >    Pueblo, Colorado  |  @         | Jonesy |     __
> > > >     38.238N 104.547W |   jonz.net | DM78rf | 73  SK
> > > >
> > > ______________________________________________________________
> > > Rover mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/rover
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:Rover at mailman.qth.net
> > >
> > > This list hosted by: http://www.qsl.net
> > > Please help support this email list: http://www.qsl.net/donate.html
> > >
> > ______________________________________________________________
> > Rover mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/rover
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Rover at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> ______________________________________________________________
> Rover mailing list
> Home: http://mailman.qth.net/mailman/listinfo/rover
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Rover at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

From waisean at gmail.com  Tue Sep 26 23:03:51 2017
From: waisean at gmail.com (Sean Waite)
Date: Wed, 27 Sep 2017 03:03:51 +0000
Subject: [Rover] Interstation Interference in Multi-Op Rovers
In-Reply-To: <CAJHj7F5unff9hk94B9-Lgcjc0pqyw2xtEq4cDYOCkHmV2WJF7w@mail.gmail.com>
References: <CAGz_XJxkgsjUE=b55DORYuVP1n7BrzwPdWmmjsNjq8OKfh8pXg@mail.gmail.com>
	<CAJHj7F5PgEqpA19KHQ0N-Pr27HLA=Mwv54dQEcz4dyaTq9mPzw@mail.gmail.com>
	<CAGz_XJxm5eTJnZXQwEzDsp-XO75qQz5JwTGL9nG5uJ+hPXTL8w@mail.gmail.com>
	<alpine.BSF.2.20.1709211906340.69746@icf.wbam.arg>
	<CAGz_XJwmatahimfKoLRJ20RfjMWXDuGXRJeOKC=e+kgCGhDJpw@mail.gmail.com>
	<CAJHj7F6GK1uNec9u+=Tt4VCno67x-nLip2DBqZhVdnGgPsO0cw@mail.gmail.com>
	<CAGz_XJyCv9F_mZE=gCm=gQgKzuF6eSYxQ7jrE4YPdgpdXhPWbg@mail.gmail.com>
	<CAJHj7F5unff9hk94B9-Lgcjc0pqyw2xtEq4cDYOCkHmV2WJF7w@mail.gmail.com>
Message-ID: <CAGz_XJx9_6xBjZBDkA9Ne1KBw=eCUmAaJWp5mjSG-uP3g8Gdzg@mail.gmail.com>

Hi Robin,

2m is the major concern. We get a little interference on 432 from 6m, but I
think a 2m notch on the 6 station should cut out the harmonics QRMing 432
as well. I don't recall any issues with 222. I think 2, 2' sections would
probably work, one for an unterminated 2m notch on the 6 station and one
for a terminated 2m bandpass on the 2 station. I probably could go
overboard here and make them for other bands, but the 2 sections would
cover our main big issues and I don't want to take advantage of your
generosity.

Thanks again, my ULS address is valid and I can work with whatever way
you'd like to receive the money. Just let me know what it costs to ship and
I'll get it over to you.

73,
Sean WA1TE

On Tue, Sep 26, 2017 at 1:15 PM Robin Midgett <K4IDC at comcast.net> wrote:

> What length do you require, and how many of that length?
> Working with the 3/4" CATV line is easy; a SO-239 barrel connector will fit
> easily once you hollow out the dielectric foam. Use a hose clamp to connect
> the shield to the barrel.
> http://amfone.net/Amforum/index.php?topic=29007.0;wap2, or Google "CATV
> line ham radio"
>
> You cover shipping, cable is free.
>
> On Mon, Sep 25, 2017 at 10:58 PM, Sean Waite <waisean at gmail.com> wrote:
>
> > Hi Robin,
> >
> > That would be great! It sounds like the 3/4 inch stuff works well for
> > stubs. I don't really have a concept of how big the stuff is, the
> heaviest
> > cable I've used so far is LMR-400. I'd appreciate it if we could get a
> > little extra so that I can practice making connectors for it, it doesn't
> > appear to be too difficult but sometimes "ham" applies to my fists as
> well
> > as my hobby.
> >
> > Would you want anything for the cable or for shipping?
> >
> > Thanks and 73,
> > Sean
> >
> > On Fri, Sep 22, 2017 at 2:47 PM Robin Midgett <K4IDC at comcast.net> wrote:
> >
> > > I have scads of CATV hard line. I'm happy to cut a section & send it to
> > > you. 1/2", 3/4" & 1" diameters.
> > >
> > > On Fri, Sep 22, 2017 at 1:38 PM, Sean Waite <waisean at gmail.com> wrote:
> > >
> > > > Hi Jonesy,
> > > >
> > > > I don't know why my brain stuck on blocking the 6m signal at the 2m
> > > radio.
> > > > It makes much more sense to do block the ~150MHz harmonic at the 6m
> > > radio.
> > > > Any idea how much difference a lower Q piece of coax - either thinner
> > > > heliax or something like LMR400 - would change the results? I gather
> it
> > > > makes them a little more broadband, but I don't know for sure. CATV
> > cable
> > > > is great but can be a little hard to get a hold of.
> > > >
> > > > We were getting some minor interference on  432 as well. I might have
> > to
> > > > look into a stub there as well.
> > > >
> > > > Thanks,
> > > > Sean WA1TE
> > > >
> > > > On Thu, Sep 21, 2017 at 9:21 PM Jonesy W3DHJ <mailserver at jonz.net>
> > > wrote:
> > > >
> > > > > On Thu, 21 Sep 2017, Sean Waite wrote:
> > > > >
> > > > > >Thanks, I suspected it might be something like that. We get some
> > > lighter
> > > > > >interference on 70cn as well, which is a few more harmonics up.
> > > > > >
> > > > > >My worry with the coax notch filters is bandwidth - 150MHz is
> pretty
> > > > close
> > > > > >to 2m. I suppose using higher quality coax/heliax and tuning to
> > 51MHz
> > > > > would
> > > > > >help with that.
> > > > > >
> > > > > >The rigidity of heliax might make it rough in the rover, a 5' long
> > > chunk
> > > > > is
> > > > > >going to be interesting g to manage and will likely go somewhere
> > > outside
> > > > > >the car on the ground.
> > > > >
> > > > > Use 3/4" cable TV "hardline" -- use it as a 144.2 mcs suck-out trap
> > on
> > > > > the 6M rig -- an open 1/4 wave at ~~15" or a shorted 1/2 wave at
> > ~~32".
> > > > >
> > > > >                 https://w3dhj.net/catvhardline.html
> > > > >
> > > > > If you try to trap the 6M rig (50.130 mcs) at the 2M rig, you run
> > into
> > > > > the problem of the 6M trap working just as nicely at 150.39 mcs --
> > > which
> > > > > may be too close, Q-wise, for the 2M rig.
> > > > >
> > > > > Another issue - besides just "interference" - is the possibility of
> > > > > blowing out the front end of the 2M receiver with simply the
> > > > > overpowering by the 6M rig.  I blew out a 2M GasFET preamp because
> > > > > my 6M halo is mounted between my stacked pair of 2M halos.
> > > > > Sigh...  I just do without that GasFET preamp now.
> > > > > I can certainly hear anyone that can hear me!  HI!HI!
> > > > >
> > > > > Jonesy
> > > > > --
> > > > >   Marvin L Jones     | W3DHJ      | W3DHJ  | https://W3DHJ.net/
> > > > >    Pueblo, Colorado  |  @         | Jonesy |     __
> > > > >     38.238N 104.547W |   jonz.net | DM78rf | 73  SK
> > > > >
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