[MRCG] [MMRCG] Teletype paper

[Tim]

Hi Ray - OK on getting your gear organized...I understand!!
A 100 watt RATT signal to a dipole on 40 or especially 30 meters should be
easy cross-continent, no big amp necessary.  I routinely work the east
coast on 40 meters with 10 watt Mil CW sets so it's do-able given the right
time / prop window...
Keep us informed, I can run a test pretty easily when you are ready.  A few
others out here can also come up on freq..

TNX ES GL, Tim
N6CC

On Thu, Mar 14, 2019 at 12:38 PM Ray Fantini <RAFANTINI at salisbury.edu>
wrote:

> Cool, will keep you informed as we progress. I only have 100 watt
> transceivers in the home QTH right now and for the time being was pairing
> the rat up with a Harris 350K, have an option on the 500 watt amplifier for
> that radio and may have to go pick that up. Do have a dipole up for 40
> meters.
>
> After I learn how to make all this junk work in the shop will eventually
> end up building cables for operation in the field with the M151 and GRC-106
> so that will provide a little more power. Almost always put up some form of
> inverted V when running in the field so it’s not inconceivable that I can
> work something out.
>
> I am anticipating having everything together for field operation by MRCA
> Gilbert this September but may be able to do something prior to that if
> it’s nothing other than dragging this all out in the yard and just running
> from there. Biggest issue now is just getting everything to work together,
> building up all the cables and getting some on air experience with the mode
> and the hardware. Lots of experience running the 106 in the field but none
> running teletype yet.
>
>
>
> Ray F/KA3EKH
>
>
>
> *From:* MMRCG at groups.io [mailto:MMRCG at groups.io] *On Behalf Of *Tim
> Sammons via Groups.Io
> *Sent:* Thursday, March 14, 2019 1:58 PM
> *To:* MMRCG at groups.io
> *Cc:* West Coast Military Radio Collectors Group <MRCG at mailman.qth.net>;
> w6jve at arrl.net
> *Subject:* Re: [MMRCG] Teletype paper
>
>
>
> Hi Guys - The Clatternet out here on the left coast is currently on "warm
> standby" but I can come up on fairly short notice.
>
> I'm running a PRC-47 with the CV-2455 RATT converter.  Unfortunately no
> mechanical terminal here so I have to use an ancient DOS laptop as a glass
> terminal (horrors...).  We ran the weekly net for several years, usually on
> 3587 but 7087 and 10137 also work pending propagation.
>
>
>
> We've worked Jim, W6JVE several times from Arkansas so a hop to the east
> coast should be OK, on 40 or 30 meters.
>
>
>
> Signal is the usual 850 cps shift, space high.  Other details here:
> http://www.mrcgwest.org/mrcg-radio-nets/
>
>
>
> If you want to try, shoot me an EMail to coordinate a test...
>
>
>
> 73, Tim
>
> N6CC
>
>
>
> On Thu, Mar 14, 2019 at 8:57 AM Nick K4NYW <navy.radio at gmail.com> wrote:
>
> Keep it stock, Ray. We will round up some 850 shifters on the air.
>
> My Dovetron can copy 170 and retransmit 850 I think - the AFSK output is
> set with a couple of pots.
>
> Or find some friendly software as Eugene says.
>
> Nick England K4NYW
> www.navy-radio.com
>
>
>
>
>
> On Thu, Mar 14, 2019 at 11:23 AM Ray Fantini <RAFANTINI at salisbury.edu>
> wrote:
>
> Spent a little time reading the manual for the MD-522A and it looks like
> the base modem is designed around being a 85 Hz shift system and the 850 Hz
> section uses a complex mixing system to convert the signal down to that
> mode. Hard enough to figure out what or how it works in the first place,
> not to take into account how to modify it. But I am open to suggestions.
> Part of the idea was to try to keep with the same vintage equipment as the
> 106 but can see the advantage of going with something like one of them
> Dovetrons that were everywhere a couple years back
>
> Ray F/KA3EKH
>
> -----Original Message-----
> From: MMRCG at groups.io [mailto:MMRCG at groups.io] On Behalf Of Bob W9RAN via
> Groups.Io
> Sent: Thursday, March 14, 2019 11:13 AM
> To: MMRCG at groups.io
> Subject: Re: [MMRCG] Teletype paper
>
> On 3/14/2019 8:37 AM, Ray Fantini wrote:
> > Maybe we can do a primitive RAT net on 40 with 850 Hz shift just for
> > the military dinosaurs?
>
> Just spitballing here, but it would seem feasible to make a "shift
> converter" that would translate the 170 Hz shift tones into 850 Hz shift
> tones.
>
> 73, Bob W9RAN
>
>
>
>
>
>
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