[GreenKeys] TT-63 (was Hal DXP38)

[epvgk at limpoc.com]

On Sun, Jul 31, 2011 at 08:28:45PM -0400, Duncan Brown wrote:
> Larry,
> 
> The TT-63 is DC out only. (but you could easily add a AFSK generator 
> with an XR-2206 - are they still available??)

They are, but most suppliers seem to consider them near end of life... I'm
looking at a modulator to go with the demodulator boards I made a while back,  
but I am thinking I may use a microcontroller and synthesize the tones using 
wave tables in software, which would give better frequency stability and
be much cheaper, with many fewer parts. Kind of funny how that works in this
modern era... Heh. More computing power than even existed in 1945, and now
it's the cheaper alternative to a few analog parts. 
    
Eric                   

> 
> Info on the TT-63, including reprint of Irv Hoff article at 
> http://www.navy-radio.com/rtty-misc.htm (scroll down to AN/FGC-7A)
> 
> Have fun,
> 
> Duncan
> K2OEQ
> 
> 
> On 30-Jul-11 22:44, telegrapher at q.com wrote:
> > To bad there is no way to configure it as a repeater, you know, audio in and then back out like a regenerator.  Speaking of which i happen to ahve a TT-63 in the garage.  But that doesn't repeat tones does it?  I know nothing about it other than its a bit on the heavy side.
> >
> >
> >
> > Larry
> > W0OGH
> > ______________________________________________________________
> >
> >
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