[GreenKeys] IRL-FSK 1000 Demod

[Bob Camp]

Hi,

Back when I bought mine new (a *long* time ago) the AFSK board was an 
add on to the standard unit. The entire doc's on the AFSK was a couple 
of loose pages that I stuffed in the back of the manual.

As best I recall the board was a fairly standard crystal oscillator 
driving a variable divider. The divider output ran into a low pass 
filter and then on into the output jack. They shifted the level of the 
divider output to take care of the roll off of the filter. Of course I 
may have it confused with another board in another TU.

I'll take a look around and see if I have a FSK-1000 manual around here.
	
	Enjoy!

		Bob Camp
		KB8TQ



On May 19, 2004, at 1:59 PM, telegrapher at att.net wrote:

> Do you own one of these?  DO you know someone who owns one of these 
> and has a manual or schematics?
>
> There must be some more of these out in radioland someplace.  I have 
> one with a manual but alas, there is no schematif for the AFSK keyer 
> board.  Evidently as i've gathered from another beholder, the 
> schematic for the AFSK keyer board may not have been a "standard" part 
> of the system and therefore not included in the manual.  Only on a 
> special request as a lot of the units may have been for commercial 
> useage with no transmitt capabilities.  Such might be for press copy, 
> marine weather, aviation weather etc.....
>
> So if you happen to have a copy of the AFSK unit schematic whether orr 
> not you have one installed in your IRL FSK-1000 Terminal unit and 
> would care to share it, please drop me a line off the list.
>
> Greenkeys members who have seen this request before need not respond.  
> Thanks to those who contributed what resources they did have though.
>
> This is really a nice unit but its just that documentation for that 
> period of time seems to be lacking in quality and content.
>
> Larry
> W0OGH
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