[1000mp] Antenna relays

[Jürgen and Kathy Nittner]

Garry Shapiro wrote:
> Tod:
>
> I encountered that exact problem with my MP while it was still in 
> warranty; it first manifested while I was operating at 3B9R in 1999. 
> Subsequently, Yaesu professed profound ignorance of the problem. I 
> then sent in the radio with explicit, detailed, can't-miss 
> instructions how to replicate the problem, and was told shortly 
> thereafter that the problem could not be replicated. That was 
> incredible to me, because the dropout by then was occurring every 10 
> or 20 TX/RX cycles. After further discussions by telephone, a bunch of 
> front-end parts were replaced, including several DIP relays, but the 
> bag of used parts accompanying the returned radio were not identified.
>
> The Yaesu "fix" lasted several years, but again appeared. Recently, I 
> sent my radio to WA4GEG in Tennessee for a display board problem and 
> mentioned this, and Byron replaced six or seven relays. So far, so 
> good. The second MP I have, purchased only a few years ago, also 
> occasionally manifests the problem. I have little doubt that a relay 
> is the culprit, but I am not sure which one.
>
> To my knowledge, Yaesu has /never/ acknowledged this problem, although 
> it has been discussed many times, by myself and others, on this 
> reflector. Yaesu's denial--despite multiple complaints--is both 
> unfathomable and unacceptable. When Chip Margelli was working for 
> Yaesu, I toggled him, but he never responded.
>
> I just went back over my stored messages, but, alas, I have not kept 
> them back that long. You might, however, key on my name or callsign in 
> the archives, starting in the Spring of 1999, to see what pops up. I 
> am afraid that all you will find, however, are detailed descriptions 
> of the complaint.
>
> Yaesu's attitude on this matter has a payback. My next radio will be a 
> K3.
>
> 73
>
> Garry, NI6T
>
> Tod -ID wrote:
>> Over the years people have posted information relating to sudden,
>> intermittent changes in RF input signal level which often seemed to be
>> caused by the small antenna relays in the RF section of the MP.
>> I am experiencing such intermittent RX signal reduction as I use the 
>> radio .
>> If the RX signal level drops I can almost always send a dit and the 
>> signal
>> level will pop back up to the previous level. One might well think 
>> that the
>> relay contacts have become fouled.
>> Before I began the search of the archives for historical comment on this
>> problem I thought I would post the problem on the reflector and ask 
>> people
>> to give me suggestions on what terms I should use in the search if I 
>> want to
>> find pertinent material faster.
>>
>> If you have the 'solution' feel free to send that along, otherwise 
>> any help
>> would be appreciated.
>>
>> Thanks, Tod, K0TO
>>
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>>   
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