[GreenKeys] Re: Just a few RTTY basic questions and a holiday thanks to all

[Russmill47 at aol.com]

In a message dated 11/25/2004 8:50:23 P.M. Eastern Standard Time,  
Wndrrt at cs.com writes:

If my  machine is geared for 60 wpm and 45.45 baud, what happens if the 19 
tries  to copy 50 baud on Hamburg Metro Weather (taken from rtty.com 
frequency  
list)?
You can copy both 45.45 and 50 baud signals on your Model 19.  If you  move 
the range selector from the middle of the range to the lower part of the  range 
-- somewhere around 30, your Model 19 should accurately copy 50  baud.  

Can the 19 be geared to handle short 75 baud contacts?


I don't think that a Model 19 can be geared to 75 baud and I'm sure others  
have a precise answer.

It looks like the 19 is limited to copying Amateur Bulletins on 3620  W2QFR.  
Are there other frequencies where the baud is a civilized 45.45  for the old 
machines to work on?  
 
You can copy the 60 wpm ham radio traffic too.  Try around 14.085 KHz  and 
you may find some interesting DX.

Do some computer programs and  modern, painfully quiet, RTTY setups without 
moving machine parts equipped  to communicate with the old machines?  New on 
one 
end of the QSO and  antique on the other end?
 
Yes!  The data protocol (5 level 45.45 baud) is the key  here.  As long as 
the equipment at either end are capable of translating  the data they can work 
together.  It doesn't matter that there is a  computer at one end and not at 
the other.   

Are the old  machines limited to talking only to their own generation?
 
No!  See the answer above.  The old machines are limited to  baudot (model 15 
/19 / 28 / 32)or ASCII (model 33 / 35) data protocol and speeds  from 60 to 
100 wpm.  Not the latest technology -- and still a viable  way to communicate.  

Can my Hallicrafters Model SX99 or my  Hallicrafters Sky Champion be used as 
a 
source for a RTTY signal?  Does  the signal have to come from a SSB  lower 
band radio?
 
If your radio receiver has a beat frequency oscillator (BFO) to receive  
Morse code signals, you should be able to receive RTTY signals.  If you set  up to 
listen for lower sideband, you can set your terminal unit to normal.   You 
can also set your receiver to upper sideband if your terminal unit has a  
setting for reverse, but there is no advantage to do so.
 
Russ
WA3FRP