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Old 10th Feb 2019, 9:32 am   #16
Martin G7MRV
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Join Date: May 2008
Location: Selby, North Yorkshire, UK.
Posts: 951
Default Re: Clansman PRC320 problems

A few things here -

You are testing with the T/R link removed and a power meter and dummy load attached to the Tx BNC?

You have obtained the EMERs that describe the internal workings of the radio?

So, are you measuring ANY output power at all? Are you seeing an increase in current draw when keyed up?


Brown front panels are a result of fading due to UV exposure, which suggests your set was deployed to somewhere sunny.

There are three relays involved in Tx/Rx switching, one of which acts as master and drives the other two. If the set is working on receive, but absolutely dead on Tx, then the PSU module 5 should be fine but one or other of the supply rails is not being switched to Tx mode somewhere

Martin
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