[1000mp] MKV RX Relay Problem

[Piotr Gutkiewicz]

Thomas,

this is the answer I have expected from you. It means you have your radio
grounded via antenna connector. I have moved the grounding point to antenna
connector when I found that receivers sensitivity can be restored not only
by T/R switching but also by changing the position of rear panel LIN ON/OFF
switch! From schematic diagram, this switch makes nothing when no power
amplifier connected to the radio. So I have suspected some ground currents
flowing along the radio circuits and I have tried to change their path.  It
has worked for me for three years so before doing anything more elaborative
I advise to try to solve "sticky relays" problem by moving radio grounding
point to the ground of one of antenna connectors. I hope it works also for
others. Happy New Year 2006 to all!

73! Peter, SP5CFD

----- Original Message ----- 
From: "Thomas Otterbein" <mailbox at otterbein-inet.de>
To: "'Piotr Gutkiewicz'" <pgutkie at ippt.gov.pl>; "'All about Yaesu 1000mp'"
<1000mp at mailman.qth.net>
Sent: Thursday, December 29, 2005 23:33
Subject: RE: [1000mp] MKV RX Relay Problem


>
>
> > -----Original Message-----
> > From: Piotr Gutkiewicz [mailto:pgutkie at ippt.gov.pl]
> > Sent: Donnerstag, 29. Dezember 2005 20:12
> > To: mailbox at otterbein-inet.de; All about Yaesu 1000mp
> > Subject: Re: [1000mp] MKV RX Relay Problem
>
> [.....]
> >>I wonder where your grounding wire goes? Maybe you have
> >>your antenna already grounded on the roof or your antenna
> >>switch is grounded?
> [.....]
> [.....]
>
>
> Hi,
> I simply disconnect the radio from the antenna system when
> I leave.
> The antenna switch is grounded.
>
> 73 de Thomas
> DG8FBV
> ---
> www.dg8fbv.de
>