[Yaesu] FT-857 (not 857D or ND) 6m self-oscillation

[Scott Manthe]

The self-oscillation problem is well know to Yaesu, but unfortunately, 
they're not terribly forthcoming regarding the cure. You can send the 
rig to Yaesu, which is going to require seperating you from at least 
$150.00, or you can possibly try researching the problem a bit more on 
the net or on Yahoo groups.

I hope you get the rig going. I've got a FT-857D and love it. By the 
way, there is no FT-857ND, as far as I know.

73,
Scott, N9AA

mikea wrote:

>I just bought a used FT-857. On all bands except 6m, it's a great
>rig, if a little power-thirsty. Folks tell me how good I sound on HF, 
>2m, and 70 cm, and I get great signal reports for CW in those bands,  
>too.                                                                  
>
>There's a little problem, though: on 6m SSB it wants to go into a
>nasty off-band self-oscillation: I see power out hit the peg, the
>display turns brightest red when set to meter SWR or power out, and
>both forward and reflected power on my tuner's meters go to the peg.
>This is at any power level whatsoever, with the antenna tuner set
>to present SWR below 1.1. Similar things happen when I'm doing CW;
>there's an initial flash of high power out or high SWR, after which
>the output settles down for the rest of the dit or dah.
>
>The antenna and tuner are good: a borrowed Icom 551D works just fine  
>with the same tuner settings, and doesn't present the anomalies in    
>power out and SWR.                                                    
>
>Google searches lead me to believe that this is a known -- and solved 
>-- problem, but don't indicate the solution. Does it involve sending  
>the rig and some money to Yaesu, or is it something I can fix here at
>the QTH with hacksaw and a ball-peen hammer?
>
>Thanks in advance for the help. 
>
>  
>