I think this was all just a mis-communication.. Good luck in your
diagnostics, and please let us know what the fix was in the end...
73's
Robert KA5PPX
At 08:13 PM 9/18/00, Jim Reid wrote:
> > I talked to Ten Tec and Paul Clinton of their service dept
> > says the Omni 6+ has NO RELAYS in it! Is that true? i
> > thought my problem may be a TR relay in the rig.
>
>Look in your Omni VI+ manual, page 4-3. If that relay, K1
>right in the middle of that diagram, which is switching the
>Antenna connector, at the top left of the diagram, to
>the "RX INPUT" middle diagram, left side, is not a T/R
>relay, would sure like to know that the TT folks believe
>it to be!!
>
>Further, the text discussion about this circuit board,
>page 4-2, at the top of the right hand column of text
>reads, "On receive, K1 is open...... And further down
>that same column of text, last paragraph begins,
>" During transmit, relay K1 is closed,......."
>
>If that relay tends to be a bit "sticky", that is not fully
>open on rcv, part of the input signal from the antenna
>is not going to go to the rcvr input; but rather get lost,
>or shunted off into all that low pass xmit filter stuff on
>the right side of the diagram, not good!
>
>On transmit, or PTT push down, that relay gets a hard
>"close" command, shorting the antenna to the transmit
>output circuitry, and presumably the diodes in series
>with the rcvr input are biased off. On key up, or PTT off,
>that relay should full open.
>
>May not be your problem spot, but that is, for sure, what
>I would call a T/R relay, hi.
>
>Sure is behaving as a T/R relay anyway, hi.
>
>73, Jim, KH7M
>Very pleased Omni VI+ user.
>
>
>
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