[50mhz] [FT-857] RE: [SMIRK] [VHF] 6 Open into Central America and Carribean

[kd4e]

I observed low output on 6M with my FT-857D, checked the coax
connectors, then noticed that the voltage was dropping on 6M
but not anywhere near as much on 10 or 20M

I reduced the number of interconnects in the power line and in
the process discovered that one cable connector was loose -
probably from a recent mobile-portable adventure - and another
had an inline filter which was creating most of loss under power
draw stress.

Once those weaknesses were resolved I again  had full power
on 6M.

My guess is that the HF final is less efficient on 6M and that it
demands more current - especially if the voltage source sags.

All that to say that you may want to check our your power supply
prior to sending it out for service.

> Might add it was XE3N on 50.127.....lots of QSB but for my 15watt mobile in
> SE Texas, it was a pleasure...took 3 tries to get him! NOW time to improve
> the rig and get an amp! (anyone know of a front end improvement for the
> FT690RII??)
> Also found out my FT 857D which has been deaf on 6 due to a blown front end
> xstr is sick RF wise out...not doing 100watts...but only 40....checked all
> the settings...10mtrs pegged the Bird meter!! Who is the best repair guy for
> Yaesu rigs other than the factory or would the factory be ok (Looking for
> performance AND cost!!)?? I would do it myself but I DON'T have the time (I
> do have the test gear)....and want it done right!!...also found UHF is down
> in power but VHF is still 50watts!
>
> TIA
> Chris
> WB5ITT
>
>   


-- 

Thanks! & 73, doc, KD4E
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