[RTTY] FSK vs AFSK

[Barry]

Are you using optoisolators (such as 4N33)?  If so, that's your 
problem.  They tend not to work with the FT-1000D.  I use 2N2222 or 
equiv transistors and they work well with the 1000D. 1K resistor in 
the base line, emitter to ground, output from the collector.
73,
Barry W2UP

On 10 Feb 2005 Courtney Judd K4WI wrote:

> Hello All, I have for some time been trying to build an adapter... 3
> attempts... to allow FSK from my FT-1000D to serial port on the
> computer. Com 1 runs the rig and com 2 was to be the interface for
> RTTY, PTT and CW. Each device ended up with the rig keying up and
> staying keyed up untill the device was unplugged. So I am back with
> ASFK for this weekend. Circuit was built straight from Don's AA5AU
> site. So any ideas or is there anyone building such an interface for
> re-sale? Plug and play is most desirable!
>     I will be on SO/SB 10 mtrs this weekend. Would NA4W be better or
>     stick
> with K4WI? GL to all, 73's Cort
> 
> Courtney Judd K4WI / NA4W
> 2300 County Road 61
> Uniontown, Al. 36786
> 
> Check out my web site:
> http://home.earthlink.net/~k4wi/k4wi/
> 
> 
> 
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--
Barry Kutner, W2UP              Internet: w2up at mindspring.com
Newtown, PA                     Frankford Radio Club