[TenTec] my omni 6+ problem - need ur advice

[Robert McAdams]

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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