[TenTec] DIY VFO jumper for Omni B

[Ralph]

Hello again Neil,
I have two of the Omni=c radio's and neither have a jumper on the molex 
plug. The jumper I mentioned on the last mail needs to be short as possible 
and I forgot to tell you that. I'm sorry for the omission. I also have a 
Corsair II and it does require a jumper. I would leave well enough alone. If 
you don't have a manual I think there is one on the Ten Tec web site under 
download. It will have the detail if it's required. I'll look at my manual 
and see if I can find it. Pretty busy today but maybe this afternoon.
Best regards,
Ralph
w8bvh


----- Original Message ----- 
From: "Neil Martinsen-Burrell" <neilmartinsenburrell at gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Monday, April 07, 2014 10:20 PM
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 at 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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