I bought last year a Kenwood TS-570D HF transceiver. After a few months of
good working i got a problem : Everytime if i switch off the power i lost
all the memories, including the value for the IF filter bandwidth (menu
item 46) which is normally held even if you reset the transceiver! I
thought immediately on a battery problem. It was, but there was more. I got
garanty to this transceiver so i brought it away for a repair. They tell me
it was a known problem by Kenwood that "a reset IC" was causing this
trouble. They replaced a battery and an IC. Remember this if you got
problems with your transceiver !
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