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[Yaesu] FT-1000D Receiver Problem

To: <yaesu@contesting.com>
Subject: [Yaesu] FT-1000D Receiver Problem
From: "Warren Robinson" <warren@rakon.co.nz>
Date: Wed, 7 Jan 2004 09:26:37 +1300
List-post: <mailto:yaesu@contesting.com>
Has anyone experienced this :-

1)
I have a problem with the FT-1000D on receive. It has developed
a 16 Khz oscillation in the front-end somewhere, placing
harmonics and sub-harmonics up the band. Naturally very strong
at the lower frequencies. S9+30 db  at 100-200 Khz.

2)
I have traced the problem to the LPF UNIT module (F3082101)board. The
inductors L720-L723 with transistors Q7201-Q7203 are oscillating on 16 KHz
on receive.

Any help would be appreciated.

Thanks
Warren Robinson
ZL1AIX

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