[Yaesu] FT-450 6 Meter Problem

[Dave Edwards]

I would also try your same scenario with a dummy load.

...Dave
----- Original Message ----- 
From: "Steve" <k0xp at k0xp.com>
To: "'Bruce'" <bsugarberg at core.com>; <yaesu at mailman.qth.net>
Sent: Sunday, August 14, 2011 11:19 AM
Subject: Re: [Yaesu] FT-450 6 Meter Problem


>
>>On the 6 meter band, still on SSB, the meter immediately goes to almost 
>>full
>>scale, and remains there, like you had selected FM or CW, instead of SSB.
>>Changing modes makes no difference.  Whatever mode you select, nothing
>>changes.  I went into the menu and changed RF Power to 10 watts, and that
>>made no difference either.  I also did a full reset, and that made no
>>difference either.
>>
>>Suggestions anyone?
>
> Sounds like it's oscillating. If you're tecnically knowledgeable, you
> might have a look at the final and driver boards for burned or
> miscolored parts like resistors. If nothing is obvious, then check
> the bias voltage(s) on both the driver and final. Also, make a SSB
> QSO on 10M and ask whether there is any distortion; that may be a good 
> clue.
>
> SteveH, K0XP
>
>
>
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