I was plagued by the K3 not transmitting in DATA-A mode on 1296 with
a transverter. I had the KXV3 programmed for 1296 transverter with
XV5 which should send a HI output on BAND0 when TRN5 is
programmed. I first noticed I could transmit if I had 144 selected
(XV1) which uses the same IF of 28-MHz. Finally dawned on me that I
was not getting BAND0=HI in 1296 which controls my INHIBIT=HI. I
reprogrammed XV5 to be TRN7 and everything works (TRN7 outputs BAND0=HI, also).
I am not using any of the other BANDn output lines at the present.
I guess there is failure in the K3 logic for TRN5. That it a bit
surprising as I feed BAND0 to the gate of a 2N2222 thru a high
resistance. The transistor is a relay driver that connects the
INHIBIT line (ACC pin7) to a source of PTT which brings the inhibit
line LO in transmit. PTT is coming from a four-stage sequencer which
is keyed by KEY OUT.
Since TRN5 was not outputting a logic=HI my INHIBIT line was holding
the K3 transmitter off. I guess someday I will need to repair the
logic ckt involved.
73, Ed - KL7UW
http://www.kl7uw.com
[email protected]
"Kits made by KL7UW"
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