[UK-CONTEST] FT1kmp partially dead

[Bob Henderson]

John

It's a few years since I parted company with my MP's and I no longer have a 
manual or cct diags.  So I can only offer very limited help.

30/20m bands often share a common LPF at a transceiver output.  Often, 
though not always, this LPF is also in the receive path.  If I had the 
problem you describe, I'd start my search at the output LPF. Relay failure 
perhaps.

Given the MP is general coverage, the bpfs will be pretty wide too. 
However, if I recall correctly, not so wide that 30/20m could share.

A look at the cct diag would be useful.

Good luck.

Bob, 5B4AGN

----- Original Message ----- 
From: "John Wayman" <g4drs at btinternet.com>
To: "UK Contest Reflector" <uk-contest at contesting.com>
Sent: Saturday, December 08, 2007 4:04 PM
Subject: [UK-CONTEST] FT1kmp partially dead


> Hello,
> I'm looking for an expert who can point me towards the most likely reason 
> for my FT1kmp to stop working on 30 and 20m, both on receive and transmit, 
> whilst continuing to work on the other bands.
> My guess is one of the relays that switch the bandpass filters, but you 
> may be able to save me the whole fault-finding thing, either by saying 
> 'Yes, that's what was wrong with mine.' or 'No, mine was the xxx.'
> Thanks for reading.
>
> 73
> John
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