>On Mon, 24 Oct 2016 15:39:51 +0200,
6dinopao...@gmail.com wrote:
>
>>Nautical VHF radio from Raymarine type 49e, Tx ok but no Rx.
>>Understand a possible cause might be linked to bad ceramic filters
>>I've located two ceramic filters marked "CQ M50FW".
>>Need help to find any information for replacement, as manufacturer,
>>data sheet, possible replacements type, etc.
>>Thanks
>
>Yep. Junk ceramic filters are an all too common problem. I saw an
>ICOM IC-M411 marine radio with an identical filter problem. It was
>fixed under the warranty, so I didn't a chance to play with it.
><
http://sv8ym.blogspot.co.uk/2010/07/mysterious-case-of-withering-filters.html>
>I'm not sure what caused the problem but as I recall, it happened very
>quickly after the initial OOB (out of box) experience. Everything was
>fine for a few days, then nothing. Sound familiar?
>
>The filter is extremely common and you should have no trouble finding
>one:
><
https://www.google.com/#q=M50FW+filter>
>Maybe stock up? 20 pcs for $20:
><
http://www.ebay.com/itm/200974082569>
sign of oxidation inside, as described in the above link.