[R-390] Re: R-390 Digest, Vol 5, Issue 3
Tony Angerame
tangerame at earthlink.net
Thu Sep 2 19:07:52 EDT 2004
Cecil,
A man after my own heart. For authenticity I picked up and old LM/BC freq meter and a T connector to my
freq counter and to the blank port on my multicoupler. Zero beat and instant readout....well almost.
Tony WA6LZH
Ex 29252 USAF "I listen more than I send."
-----Original Message-----
From: r-390-request at mailman.qth.net
Sent: Sep 2, 2004 3:17 PM
To: r-390 at mailman.qth.net
Subject: R-390 Digest, Vol 5, Issue 3
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Today's Topics:
1. Re: R-390a Hurricane Prep? (Bob Camp)
2. Re: Frequency meter (Cecil Acuff)
3. Re: R-390a Hurricane Prep? (N4BUQ at aol.com)
4. Re: R-390a Hurricane Prep? (Roy Morgan)
5. Re: R-390a Hurricane Prep? (Paul Bigelow)
6. Re: R-390a Hurricane Prep? (Llgpt at aol.com)
7. RE: Frequency meter (Tom Norris)
8. Whoopsie... RE: Frequency meter (Tom Norris)
9. Re: R-390a Hurricane Prep? (Roy Morgan)
10. Fw: Last of the Olympics (B Riches)
11. Re: R-390a Hurricane Prep? (Michael Murphy)
----------------------------------------------------------------------
Message: 1
Date: Thu, 02 Sep 2004 06:56:16 -0400
From: Bob Camp <ham at cq.nu>
Subject: Re: [R-390] R-390a Hurricane Prep?
To: JamesMiller <jmiller1706 at cfl.rr.com>, R-390 HF Receiver List
<r-390 at mailman.qth.net>
Message-ID: <B6D9772B-FCCE-11D8-89DB-000A95C4FE54 at cq.nu>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi
I'd recommend bubble wrap and plastic sheet in a couple of layers. That
at least will take care of the water issue. If the surplus guy out by
the airport (can't remember the name ... sorry) still has an inventory
of metal military packing cases they would be an ideal thing to drop
the wrapped radio into. It's been a while since I was in Melbourne so
the guy I'm thinking of may be long gone.
Take Care!
Bob Camp
KB8TQ
On Sep 1, 2004, at 10:06 PM, JamesMiller wrote:
> I'm in Melbourne, Fl., the predicted ground zero for Frances. All I
> think I
> can do for my 390a is cover it with pastic. Alternatively I could
> chain it
> to my ankle to keep me from blowing away in the 140 mph winds. Any
> other
> suggestions? Jim
>
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/faq.htm
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>
------------------------------
Message: 2
Date: Thu, 2 Sep 2004 08:29:18 -0500
From: "Cecil Acuff" <chacuff at cableone.net>
Subject: Re: [R-390] Frequency meter
To: "Dan Merz" <djmerz at 3-cities.com>, "Bob Camp" <ham at cq.nu>, "Charles
B" <ka4prf at us-it.net>, "R-390 HF Receiver List"
<r-390 at mailman.qth.net>
Message-ID: <001401c490f0$d96719e0$6501a8c0 at acuff1>
Content-Type: text/plain; charset="iso-8859-1"
Greetings Group,
I have watched this thread for several days....interesting. I have
had nothing of any real help to add...until I had an idea this morning that
took me back to the days of rock bound transmitters (Xtal) and "Spotting"
your transmit freq. on the receiver.
High quality signal generators with digital displays have become relatively
cheap in the last few years...why not pick up a nice HP-8640B signal
generator....set the TCXO reference on frequency (zero beat WWV on your
receiver) and the display and output will be dead on the money. Generate a
spotting carrier with the signal generator on the desired receive frequency,
zero beat it with your receiver and there you are. If you want to know
where you are tuned sweep the generator across the part of the band you are
in until it is zero beat the signal generator with your radio and read the
freq.
I use a similar technique when using my old HP-606A tube type Signal
Generator...I pass it's output through my frequency counter and pretty much
ignore the analog dial during setup, then reduce the output level and go to
aligning.
You could probably pick up a working 8640B for around $200 on one of the
auction sites and it can serve other duties around the shop as well....you
can even use it as a frequency counter by inputting a frequency to be
counted to a front panel jack.
Just a thought!
Cecil....
----- Original Message -----
From: "Dan Merz" <djmerz at 3-cities.com>
To: "Bob Camp" <ham at cq.nu>; "Charles B" <ka4prf at us-it.net>; "R-390 HF
Receiver List" <r-390 at mailman.qth.net>
Sent: Wednesday, September 01, 2004 10:44 PM
Subject: Re: [R-390] Frequency meter
> Hi, I can't resist - maybe a pun is intended - as Bob suggested taking
> care of the whole thing with a pto coupled variable resistor as an option.
>
> But since accuracy wasn't mentioned, I would say just use the mechanical
> indicator on the radio and let it go at that. If you want to do more work
> and want to know how accurate your radio is, just make some notes using a
> notebook and pencil, on how far the dial is off using a known signal or
> xtal calibrator for reference. Pretty soon you'll know just where you are
> and you'll know more about your radio than anyone else, which is hard to
> accomplish on this listing. You'll have become an expert.. Eventually,
> you'll be unhappy because you'll hate having a radio that's that as good
as
> it could be. This will lead you to tear open the pto and fix it - then
> you'll discover not all crystals are where they should be - life gets
> interesting. But you're an expert enjoying a good radio.
>
> My opinion is to enjoy the radio as much as possible the way it was built,
> fix some things that you can't live with. I left my 390a freq. readout
> as-is but
> I added a digital frequency readout from AADE for about $60 + to my
Mackay
> 3010C.
> This is a programmable
> readout and works fine (all the programming was done by AADE and is
amazing
> in itself), no noise that I can tell but I shielded and isolated it
pretty
> well.
> According to the online info the DFD3 works for a 390a. And I used the
> offered 20 preamp
> to give more isolation. I have no experience with it's use
> for the 390a, but I especially like it for the 3010 because it eliminates
> the backlash of the
> tuning mechanism belt mechanism, ever so slight but makes tuning ssb
> tricky.
> hope this helps, Dan
>
>
> ----- Original Message -----
> From: "Bob Camp" <ham at cq.nu>
> To: "Charles B" <ka4prf at us-it.net>; "R-390 HF Receiver List"
> <r-390 at mailman.qth.net>
> Sent: Wednesday, September 01, 2004 3:22 PM
> Subject: Re: [R-390] Frequency meter
>
>
> > Hi
> >
> > As the other posts have mentioned it's not a simple thing.
> >
> > A lot depends on how accurate you want to get. RTTY and SSB are the two
> > things that most people would like to tune accurately. With AM the
> > bandwidth of the filters makes a 10 or 100 cycle error a lot less
> > important.
> >
> > If you are going to tool up to do a full readout for SSB or you would
> > need to measure:
> >
> > 1) The first crystal oscillator
> > 2) The second crystal oscillator
> > 3) The VFO
> > 4) The PTO
> >
> > The digital stuff to do that isn't terribly expensive these days, but
> > it does make noise.
> >
> > Once you had all the frequencies measured then oddly enough you would
> > have to know what band you are set to. It turns out that several of the
> > crystals are used for more than one band so there is no direct and
> > simple way to guess the band in every case.
> >
> > That all sounds like a lot of work and I'm lazy. If I was going to do
> > it I'd fake it:
> >
> > No matter what you need some way to track the band switch. Say we slave
> > a pot to the shaft and measure the resistance.
> >
> > The 17 MHz ovenized crystal isn't going to drift much I would simply
> > measure it's frequency with a bench counter and store the result
> > somewhere.
> >
> > The same thing is true to a lesser extent for the crystals in the
> > crystal deck. They do drift but maybe by sixty cycles. I would just
> > measure them and store their frequency as well.
> >
> > That gets us to the BFO and the PTO.
> >
> > There is an old military mod that puts a multi turn gear drive and
> > readout on the BFO shaft. The net result is the ability to reset the
> > BFO very accurately. If you can lock down the BFO shaft fairly well
> > (maybe mechanical detents) you can get around reading the BFO.
> >
> > All that's left is the PTO. You can either count it's frequency or try
> > the slave a pot to the shaft trick.
> >
> > The cute thing about doing it al with pots would be that you have no RF
> > counters at all. You are dependent on the radio not drifting but that's
> > what the 390 is known for.
> >
> > Definitely a bit far from the "well enough alone" zone thought ....
> >
> > Take Care!
> >
> > Bob Camp
> > KB8TQ
> >
> >
> >
> > On Sep 1, 2004, at 9:37 AM, Charles B wrote:
> >
> > >
> > > Is there any place inside the R-390A where a frequency meter can
> > > attached to get a frequency reading?
> > >
> > > Chuck
> > >
> > > ______________________________________________________________
> > > R-390 mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/r-390
> > > Help: http://mailman.qth.net/faq.htm
> > > Post: mailto:R-390 at mailman.qth.net
> > > Unsubscribe: http://mailman.qth.net/mailman/options/r-390
> > >
> >
> > ______________________________________________________________
> > R-390 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/r-390
> > Help: http://mailman.qth.net/faq.htm
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> > Unsubscribe: http://mailman.qth.net/mailman/options/r-390
>
>
> ______________________________________________________________
> R-390 mailing list
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> Help: http://mailman.qth.net/faq.htm
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> Unsubscribe: http://mailman.qth.net/mailman/options/r-390
>
------------------------------
Message: 3
Date: Thu, 02 Sep 2004 09:30:59 -0400
From: N4BUQ at aol.com
Subject: Re: [R-390] R-390a Hurricane Prep?
To: r-390 at mailman.qth.net
Message-ID: <7C7E29B9.1CFDD6E6.0000E03E at aol.com>
Content-Type: text/plain; charset=iso-8859-1
Of course, after you have it crated up, you can then conveniently send it to me!
Take care. Hopefully the storm not hit close enough to be a big bother.
Barry(III) - N4BUQ
<snip>
>Putting it in some kind of wooden box or crate might help protect it better also
>after the radio is sealed watertight. At least if it is watertight it wouldn't
>get ruined from being soaked if a window broke and rain blew in the room and
>then left to sit in a wet mess for several days. Best of luck and hope the
>storm misses you. 73 Todd Roberts WD4NGG.
------------------------------
Message: 4
Date: Thu, 02 Sep 2004 10:44:04 -0400
From: Roy Morgan <roy.morgan at nist.gov>
Subject: Re: [R-390] R-390a Hurricane Prep?
To: "JamesMiller" <jmiller1706 at cfl.rr.com>, <r-390 at mailman.qth.net>
Message-ID: <5.1.1.5.2.20040902104244.0300e210 at mailserver.nist.gov>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 10:06 PM 9/1/2004 -0400, JamesMiller wrote:
>I'm in Melbourne, Fl., the predicted ground zero for Frances. ... cover
>it with pastic. ... chain it to my ankle to keep me from blowing away in
>the 140 mph winds. Any other suggestions?
Put the R-390A in the back of your car.
Drive to the middle of Tennessee.
Find a motel and hang out.
Roy
- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254, Fax: 301-948-6213
roy.morgan at nist.gov --
------------------------------
Message: 5
Date: Thu, 2 Sep 2004 10:54:43 -0500
From: Paul Bigelow <pbigelow at us.ibm.com>
Subject: Re: [R-390] R-390a Hurricane Prep?
To: r-390 at mailman.qth.net
Message-ID:
<OFE5663660.925318C3-ON87256F03.00574637-86256F03.00576B4A at us.ibm.com>
Content-Type: text/plain; charset=US-ASCII
Any Florida frequencies to monitor?
73's
Paul Bigelow
EAC 1967 R-390a/URR Ser. No. 121
Collins 1951 R-392/URR Ser. No. 1254
------------------------------
Message: 6
Date: Thu, 2 Sep 2004 12:07:09 EDT
From: Llgpt at aol.com
Subject: Re: [R-390] R-390a Hurricane Prep?
To: pbigelow at us.ibm.com, r-390 at mailman.qth.net
Message-ID: <199.2e3ebde3.2e689f2d at aol.com>
Content-Type: text/plain; charset="US-ASCII"
14.325 USB
Les
In a message dated 9/2/2004 11:06:13 AM Central Daylight Time,
pbigelow at us.ibm.com writes:
Any Florida frequencies to monitor?
73's
Paul Bigelow
EAC 1967 R-390a/URR Ser. No. 121
Collins 1951 R-392/URR Ser. No. 1254
------------------------------
Message: 7
Date: Thu, 2 Sep 2004 11:11:36 -0500
From: Tom Norris <r390a at bellsouth.net>
Subject: RE: [R-390] Frequency meter
To: R-390 at mailman.qth.net
Message-ID: <p06100547bd5cf5e2d1d3@[10.0.1.5]>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"
Of various ones that have the BNCs in the rear,
such as the R-1247, the BNC's are used as oscillator
INPUTS rather than outputs.
Tom
>
>There are a few R-390x variants out there that
>bring all three oscillators out to the back panel,
>so at least you wouldn't have to hack the radio,
------------------------------
Message: 8
Date: Thu, 2 Sep 2004 11:27:11 -0500
From: Tom Norris <r390a at bellsouth.net>
Subject: [R-390] Whoopsie... RE: Frequency meter
To: R-390 at mailman.qth.net
Message-ID: <p06100548bd5cf984aba7@[10.0.1.5]>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"
Looking closer at the R-1247, I see references
from Tom N5OFF that say it is possible to *output*
the internal oscillators via the rear connectors.
Hmm, might work for external freq sampling then.
I guess I should pay closer attention...
Tom NU4G
----------------------------------
Moments ago, I wrote:
Of various ones that have the BNCs in the rear,
such as the R-1247, the BNC's are used as oscillator
INPUTS rather than outputs.
Tom
>
>There are a few R-390x variants out there that
>bring all three oscillators out to the back panel,
>so at least you wouldn't have to hack the radio,
------------------------------
Message: 9
Date: Thu, 02 Sep 2004 12:29:01 -0400
From: Roy Morgan <roy.morgan at nist.gov>
Subject: Re: [R-390] R-390a Hurricane Prep?
To: Paul Bigelow <pbigelow at us.ibm.com>, R-390 at mailman.qth.net
Message-ID: <5.1.1.5.2.20040902122016.02fdaea8 at mailserver.nist.gov>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 10:54 AM 9/2/2004 -0500, Paul wrote
>Any Florida frequencies to monitor?
The Hurricane Watch Net website is:
http://www.hwn.org/
Where you can get updates on the hurricane and read that:
"The Hurricane Watch Net and the operation at WX4NHC at the National
Hurricane Center in Miami are manned entirely by volunteers. We activate
whenever a system has achieved hurricane status and is within 300 miles of
populated land mass or at the request of the National Hurricane Center.
Net operations are conducted on 14.325 MHz, and when band conditions
warrant, we move to 3.950 MHz. "
Roy
- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254, Fax: 301-948-6213
roy.morgan at nist.gov --
------------------------------
Message: 10
Date: Thu, 2 Sep 2004 14:47:21 -0400
From: "B Riches" <bill.riches at verizon.net>
Subject: [R-390] Fw: Last of the Olympics
To: "Doug Stewart" <dougstewart at lcmr.capemayschools.com>,
<r-390 at mailman.qth.net>
Message-ID: <00a401c4911d$47f64ee0$0200a8c0 at gateway8rv1l44>
Content-Type: text/plain; charset="iso-8859-1"
Hi Doug - E wing speakers are working now. Click on this!!
----- Original Message -----
From:
Speakers on...
http://home.datacomm.ch/marco.fernando/fla/bozzetto/olympics.swf
.
------------------------------
Message: 11
Date: Thu, 2 Sep 2004 18:12:03 -0400
From: "Michael Murphy" <mjmurphy45 at comcast.net>
Subject: Re: [R-390] R-390a Hurricane Prep?
To: <N4BUQ at aol.com>, <r-390 at mailman.qth.net>
Message-ID: <002b01c49139$e1331040$6600a8c0 at comcast.net>
Content-Type: text/plain; charset="iso-8859-1"
Better yet, use a proven government storage method. Remove and destroy the
meters, paint an orange stripe across the front, and take it out to the
front yard. MM WB2UID
----- Original Message -----
From: <N4BUQ at aol.com>
To: <r-390 at mailman.qth.net>
Sent: Thursday, September 02, 2004 9:30 AM
Subject: Re: [R-390] R-390a Hurricane Prep?
> Of course, after you have it crated up, you can then conveniently send it
to me!
>
> Take care. Hopefully the storm not hit close enough to be a big bother.
>
> Barry(III) - N4BUQ
>
> <snip>
>
> >Putting it in some kind of wooden box or crate might help protect it
better also
> >after the radio is sealed watertight. At least if it is watertight it
wouldn't
> >get ruined from being soaked if a window broke and rain blew in the room
and
> >then left to sit in a wet mess for several days. Best of luck and hope
the
> >storm misses you. 73 Todd Roberts WD4NGG.
>
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/faq.htm
> Post: mailto:R-390 at mailman.qth.net
> Unsubscribe: http://mailman.qth.net/mailman/options/r-390
------------------------------
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