[Yaesu] 620b If alignment - similar to ???

[Davis_R]

Does the receiver die on all bands?
You may try treaking the trimmer capacitor associated with the crystal for
the band segment you are on. The FT-101 manual calls for 0.3 V rms for the
LO voltage, using an RF probe. If the V is too far off, the crystal stops
oscillating and the receiver will either nor come in, or sometimes 'faint'.
A little touchup of the crystal's trimmer cap pops it right back in.

Rick, WD8JJA
----- Original Message ----- 
From: "Hamel Family" <pehamel@i-55.com>
To: <yaesu@mailman.qth.net>
Sent: Wednesday, October 15, 2003 7:04 PM
Subject: [Yaesu] 620b If alignment - similar to ???


> The 620B book I have thanks to this list does not go into detail with
> voltages, etc.
> The receiver is dying as it warms up.
> Looking at the lineup, it may be using the same IF board as another Yaesu
HF
> rig.
> That rig may have the voltages and alignment points in it's book.
> (This is my first Yaesu rig)
> If someone knows that IF board, I really would appreciate some advice on
> which test points to monitor as it warms up.
> Reinventing the wheel and Easter-egging can be so frustrating !
> Thanks
>
>
> Moderator: Ray Brown, KB�STN
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