[Yaesu] FT890 strange behavior

[David Robbins]

the physical distance between the radio and the supply is not a factor, it is either rf being picked up by the cables to the supply or the radio is overloading it and it is shutting down.  now normally that supply should handle that radio, but if there is rf getting back into the radio it could be drawing excessive current.

two key things you don't describe are the antenna and ground system... start there.

brute force fix... clamp on ferrites on power leads to and from the astron and also on the antenna, mic, and any other connections to the radio.

Jul 10, 2013 11:36:09 PM, w2iy at verizon.net wrote:

Hi all, using an FT890 with Astron SS-30M supply and DX Lab Suite. Receives FB but the instant I hit the key, the xcvr shuts off, the supply voltage goes down to 3 volts. Turn everything off, restart, same deal: receives FB, as soon as I hit the key, the xcvr shuts off and supply goes to 3V. At first I thought it was RF getting into the supply so I separated the two by a couple feet and this _seemed_ to help. But tonight the problem is back fully.

This first happened two days ago. Then last night everything was fine, worked several stations OK. Tonight, problem. Has anyone seen anything like this before? Any advice greatly appreciated.
Thanks and 73
Mike W2IY
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