Neil, I no longer have my OMNI-C and ext VFO but I recall it had the same
rear panel ext VFO and accessories connection as my Corsair-II. I cannot
find the factory plug and the Corsair-II and ext VFO are not easily turned
around for viewing the connector at the moment. If it work as is, not to
worry. Good news on the short jumper.
73 & DX,
Gary - AB9M
-----Original Message-----
From: Neil Martinsen-Burrell
Sent: Monday, April 07, 2014 9:20 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] DIY VFO jumper for Omni B
A very short piece of wire with two phono plugs on the end has done the
trick! There is no more display instability on transmit. The cord I had
been using was 3 or 4 feet long so it could have been picking up some RF,
especially on bands where my antenna is close to the radio.
The radio didn't come with a jumper plug for the accessory connector but it
appears to work in spite of that. Do I need to short two of the pins on
that connector together? I can't tell from the schematic which two pins
you are referring to. I see +REG coming from the IF-AGC board, but I don't
see a connection between the PTO and the accessory connector. Can you be
more specific?
-Neil KD0UKC
On Mon, Apr 7, 2014 at 8:51 PM, GARY HUBER <glhuber@msn.com> wrote:
The jumper needs to be short, maybe a three inch piece of insulated #14
formed to a U with phono plugs soldered on. It sounds like the transmit or
receive offset switch is on. The other thing to consider is the
accessories molex connector should have a plug with a jumper from the +
regulated line to PTO enable.
73 & DX,
Gary - AB9M
-----Original Message----- From: Neil Martinsen-Burrell
Sent: Monday, April 07, 2014 8:03 PM
To: Discussion of Ten-Tec Equipment
Subject: [TenTec] DIY VFO jumper for Omni B
Can anyone tell me what the external VFO jumper for an OMNI B should look
like? When I bought the rig, it came with the external VFO which I no
longer have. Now to make the rig work, I think I need to replace this
jumper. I have tried just using a RCA cable that I had around the shack,
but when I transmit, the displayed frequency jumps around wildly, so I
don't think that is right.
I have some RCA connectors and some wire, but I don't know what exactly I
am trying to make. Can someone offer a description or a picture of what
the original external VFO jumper looked like so I can attempt to duplicate
it? Or failing that, can someone explain why my simple RCA cable doesn't
work?
Thanks for any help you can offer.
-Neil KD0UKC
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