I am using Frederick model 1632
a commercial / military hardware TU
designed in 60's by Irvin M. HOFF W6FFC
Mark only or Space only modes are selectable from the front panel
and it works perfectly well
It is a real efficent solution when one of two frequency is hightly QRM
73 Jeff F6AOJ
model 1632 page
http://www.f6aoj.ao-journal.com/crbst_32.html
Frederick vintage page
http://www.f6aoj.ao-journal.com/crbst_46.html
RTTY/Digital DXCC "Top List" by AD1C
http://hamradio.ad1c.us/rtty_toplist/index.php
----- Original Message -----
From: "Bill, W6WRT" <dezrat1242@yahoo.com>
To: <rtty@contesting.com>
Sent: Tuesday, June 01, 2010 8:12 AM
Subject: Re: [RTTY] 200 hz filter on RTTY
>
> ORIGINAL MESSAGE:
>
> On Mon, 31 May 2010 22:04:15 -0500, "Don Hill AA5AU"
> <aa5au@bellsouth.net> wrote:
>
>> I have heard
>>rumors of a modem that could actually copy Baudot
>>hearing only one of the two tones, but this could have been a HAL myth.
>
> REPLY:
>
> RiTTY by K6STI claims to do that. Bryan calls it the "flywheel" mode.
> I have run RiTTY for years but I have never tried it with literally
> one tone, but it does copy very, very well.
>
> 73, Bill W6WRT
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> RTTY@contesting.com
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