And don't forget about the second carrier null adjustment on the 80449
board that I mentioned in my previous email.
Good luck!
Barry N1EU
On Sat, Sep 9, 2017 at 2:22 PM, Shawn Upton via TenTec <
tentec@contesting.com> wrote:
> I misspoke--it's module 80713, not 80714. Which I don't have anyhow. But
> I should point out my error in the subject line.
> While at HRO yesterday I was trying to convince myself to get the Omni D
> that was there, for no good reason other than to save the poor thing. And
> maybe have a parts rig. This morning I decided to look at the manual:
> http://www.tentec.com/wp-content/uploads/2016/05/
> Omni_A_-_D_Owner_Manual1534.pdf
> and what do you know, it shows the module I have! It's module 80453,
> clearly showing the two trims and one slug. Instructions found, so I can
> move forward now.
> I don't know what happened here, it may be a used rig but I don't think
> the PO swapped modules. Plus, the manual shows pictures of two different
> things, so I think it is factory installed. I'm just happy to find the
> directions required. shawn kb1ckt
>
> On Tuesday, September 5, 2017 8:50 AM, Barry N1EU <
> barry.n1eu@gmail.com> wrote:
>
>
> For carrier null, you also need to adjust R11 on the 80449 SSB Generator
> board (step 12 on p3-41), as well as R14 on 80713 TX Mixer board (p3-43).
>
> It would be prudent to first adjust the carrier oscillators (p3-40 and
> p3-41). If the carrier oscillators are not accurately aligned, carrier
> null will be impaired further.
>
> I suspect it's very possible that there was a change to the board that
> would explain what you're seeing.
>
> 73, Barry N1EU
>
> On Tue, Sep 5, 2017 at 8:04 AM, Shawn Upton via TenTec <
> tentec@contesting.com> wrote:
>
> > Picked up a desk mic, but while listening on a separate receiver I
> noticed
> > a fair amount of carrier. At first I thought 60Hz pickup, but I have it
> > with out any mic wire connected (just a connector with ptt tied to gnd).
> So
> > I went to adjust the carrier balance, but am confused. The manual has a
> pic
> > showing the tx board relative to all boards; it looks like what I have.
> Two
> > trims and a large shielded inductor. And no ic. But the page for the
> 80713
> > shows a 1496(? off memory right now) ic and only one trimpot. Which is
> not
> > what I have.
> > It looks like a running change, from a discrete design to an ic based
> one?
> > Regardless, how do I adjust?
> >
> > shawn uptonkb1ckt
> > _______________________________________________
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> > TenTec@contesting.com
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> >
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