[GreenKeys] GreenKeys Digest, Vol 72, Issue 6

Wed Jan 6 09:11:25 EST 2010

I finally got my RTTY gear up and running with 1 KW on 20 meters.  Hadn't 
been on the air with TTY for 20+ years.

I answered a CQ....copied him fine.  Went back...finished and he was gone! 
He blew me off!   In his rundown of equipment was a pile of "glass stuff" I 
didn't recongize...I'm hoplessly software retarded.

It was at that point I quit,  realizing that my real fun with TTY was 
repairing and simply enjoying the electromechanical marvels that they are. 
I copy W1AW frequently.  I've tried to copy what little there is on the ham 
bands but they're always on two different frequencies anymore...far enuf 
apart that the TU won't copy both.

So "frankly, I don't give a damn" to work folks anymore....I'm in total 
bliss just screwing around with the machines and bringing them back to 
"factory".

lar
K2JIA
www.antiquetelephone.com

----- Original Message ----- 
From: "Gary Buda" <gbuda at cyberwright.net>
To: <greenkeys at mailman.qth.net>
Sent: Tuesday, January 05, 2010 9:25 PM
Subject: Re: [GreenKeys] GreenKeys Digest, Vol 72, Issue 6

> IT has been years since I've been on RTTY.  I kinda soured on it because 
> of
> all the glass tube operators and their inability(read that unwillingness) 
> to
> limit the line length and software vendors who assume everyone is on glass
> tube RTTY and don't even have a way for their software to do an auto CR/LF 
> to
> accommodate those of us who prefer the mechanical machines.  I suppose I 
> could
> figure out how to set up my stunt box to automatically do CR/LF but I 
> haven't
> bothered yet.
>
> Gary WA0NDN
> NNNN
>
> On Monday 04 January 2010 11:00:22 am greenkeys-request at mailman.qth.net 
> wrote:
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>> Today's Topics:
>>
>>    1. Re: SB-2244 TTY patch panel (Bill Horne)
>>    2. QSO's (Teletypeparts at aol.com)
>>    3. ASR-33 70 (Dave Hunter)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sun, 03 Jan 2010 12:44:18 -0500
>> From: Bill Horne <ehorne at speakeasy.net>
>> Subject: Re: [GreenKeys] SB-2244 TTY patch panel
>> To: greenkeys at mailman.qth.net
>> Message-ID: <4B40D772.5060004 at speakeasy.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> I think it's just a throttling mechanism to slow the machines down while
>> the rotors align in the crypto gear.
>>
>> Bill, W1AC
>>
>> On 1/3/2010 11:52 AM, Brooke Clarke wrote:
>> > Hi:
>> >
>> > It may be related to TEMPEST.  A mechanical TTY machine generates RF
>> > signals at each on or off transition.  If a bunch of machines are
>> > synchronized so they all have a transition at the same time then their
>> > TEMPEST emanations may get mixed up.
>> >
>> > Have Fun,
>> >
>> > Brooke Clarke
>> > http://www.PRC68.com
>> >
>> > Jim Haynes wrote:
>> >> Some implementations of Teletype with crypto equipment required that 
>> >> the
>> >> stepping the Teletype keyboard or tape reader at a fixed rate.  In the
>> >> Model 28 parts books you'll see mod kits to adapt things for
>> >> "synchronous pulsed operation".  A large station might have a TD 
>> >> stepper
>> >> facility consisting of a baud rate generator and then a bunch of boxes
>> >> that send out TD stepping pulses to all the TDs.
>> >>
>> >> I don't know why it was this way.  I don't have any first-hand 
>> >> knowledge
>> >> of crypto equipment, but I did once buy some TD stepping equipment at
>> >> a surplus sale.
>> >>
>> >> Where this is done each TD or keyboard has to have its usual loop and
>> >> then a loop for the stepping pulses.  So I'm guessing what you have
>> >> provides for switching both the signal and the stepping pulses.
>> >>
>> >>
>> >>
>> >> jhhaynes at earthlink dot net
>> >>
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