I thought I would start a topic on operating quirks of the FT-980 that we have found.?
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I'll start it off with one for operating with a non-QSK Linear Amp: WIth a non-QSK linear you don't want the linear's clunky mechancial relays trying to replicate the dits/dahs on the FT-980 output stream which is what will happen if the PTT out mirrors the CW stream. The typical fix/method is to use a PTT "delay" function on either your Keyer or Rig. The FT-980 has such a delay function, but in order to make it work you have to turn on the VOX. This isn't well documented, is perhaps non-intuitive (at least to me), and took a bit to figure out.
The reason is that the FT-980 internal delay is actually shared by both the VOX circuit, and the CW circuit (all the non-PTT internal functions). There is a mention on this on page 29 of the manual for QSK tuning, but you need to extrapolate for non-QSK operation.
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-Mat Breton, N8TW