3426Re: [wsjtgroup] WSJT and FT-897D
- Jan 2, 2007Thanks for sharing Larry.
I recently bought an 897D. I'm not setup for WSJT again yet, but hope
to be before too much longer.
[I still have to put up some antennas, and interface to a laptop with no
K9ZF /R no budget Rover ***QRP-l #1269
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> The "low power out on digital modes" has been fixed. Since I did not
> get any response from my original post, I thought I'd post the
> solution and add to the general knowledge base.
> The problem was with my new FT-897D and WSJT (also MMTTY) using the
> AFSK input and the radios digital mode. The output power was low even
> though the ALC level indicator said the audio level was more than
> adequate. The interface and audio levels used were the exact same as I
> have been using successfully with my TS-2000 for quite some time.
> Since the TS-2000 worked fine with the interface, I assumed the
> problem was with the FT-897D radio.
> Once I dragged a scope over to the radio and looked at the audio line,
> it was obvious what the problem was. Some high frequency crap (no
> doubt from a switching power supply somewhere in the shack) was riding
> on the audio tone and causing the ALC to pump up and limit the power
> output. It seems that the TS-2000 has some audio filtering on the
> digital input that the FT-897D does not. Anyway, it was easy to fix
> and now all is well with both radios.
> I'm looking forward to making some MS contacts with this new radio in
> the next few days.
> 73, Larry
> Larry - W7IUV
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