[Yaesu] FT897 audio

[Randy Moore]

Your antenna SWR is too high.  This high SWR causes the radio to fold 
back, and when it folds back it clips the audio.  Usually the FT-897 
does not fold back until the SWR is 1.5 or greater, but perhaps your 
radio is a little more sensitive.

One theory concerning the clipped audio in the FT-897 is that the 
reflected power gets back into the radio as RFI and distorts the audio 
causing the clipping.  But I have noticed that the clipping is always 
associated with a high SWR. 

The FT-897 is a great radio, it just does not tolerate SWR.

Randy Moore
AI4CO


Stephen Reichlyn wrote:

> Win a new Icom IC-756PROIII and help QSL/QTH.net
> Details at: http://mailman.qth.net/index.html
> .
> .
> I have recently had reports of clipped transmit audio from my FT897. I 
> have the mic gain set at 20 and the ALC level is at or below the proper
> mark on the meter. Can anyone give me some guidance about where to 
> look next? The antenna SWR is >1.3 to 1 and the rig is properly grounded.
>
> 73,
> Steve AA4V
>
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