Thanks..... Good to know.....
On Wed, Sep 26, 2012 at 8:04 AM, Robert Mcgraw <rmcgraw@blomand.net> wrote:
> Band pass filter selection is done by relays in the Omni VII. The diodes
> are serve spike or counter EMF suppressors across the relay coils.
>
> 73
> Bob, K4TAX
>
>
>
> > I would guess that if your radio is designed even close to the way my old
> > Paragon is set up. You have one or more bad Diodes on the Band Pass
> > Board.
> > The Band Pass Board selects various values of Inductance and Capacitance
> > that keep the Output of the Transmitter from outputting various harmonic
> > signals. This also has a lot to do with Matching the Final Stage to your
> > 50
> > Ohm Load. If these various Coils and Capacitors are being Wrongly
> > Selected,
> > then you are looking at Massive SWR and a really bad match ( maybe even a
> > short electronically ) to the Final Output Devices. Every time you change
> > bands, the Microprocessor will output a certain combination of voltages
> > to
> > the Band Pass Board. If One or more of these diodes are shorted or open
> > ..... Your radio will see a Massive Mismatch at the Finals. I would use
> > the
> > Diode Check function or the R times one setting on an Analog meter to
> > check
> > these diodes.
> >
> 73
> > and May God Bless de Wade/KJ4WS
> >
> > On Tue, Sep 25, 2012 at 4:00 PM, denton <denton@oregontrail.net> wrote:
> >
> >> I have an Omni 7 that shuts down due to over current into a flat
> >> load...regardless of power output setting on 12 and 10 meters only. All
> >> other bands behave themselves.
> >> If I even tap the mic it will shut down...
> >> Called TT about it over a year ago and they think it is either a diode
> >> or
> >> relay...hate to sent it in.
> >> Anyone else experience the same?
> >> Talked to another ham at the Spokane hamfest this last Saturday and he
> >> said he had the same problem, sent it to TT for fixing but can't recall
> >> just what they did.
> >> ------------------------------**--------------------
> >> From: "shristov" <shristov@ptt.rs>
> >> Sent: Tuesday, September 25, 2012 10:44 AM
> >> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
> >> Subject: Re: [TenTec] Balancing Orion 565 VFO knobs
> >>
> >>
> >>> Michael Cheponis <Michael@Cheponis.Com> wrote:
> >>>
> >>> I have a 566, and the knobs are perfectly balanced.
> >>>>
> >>>
> >>>
> >>> It's great to know that knobs on 566 do not drift by themselves.
> >>>
> >>> I managed today to balance both of my 565 VFO knobs.
> >>> It was easier than expected, took me 15 minutes per knob.
> >>>
> >>> Using an 8 mm slot drill, I cut out a ~2 mm deep hole,
> >>> on the bottom of the cast balancing hole,
> >>> just opposite of the fastening screw.
> >>>
> >>> Quantity of material removed was very similar on both knobs:
> >>> approximately 100 mm^3, which is ~0.27 g of aluminium.
> >>>
> >>> For the record:
> >>> the knob itself is ~165 g
> >>> skirt (made of metalized plastics) is ~8 g
> >>> spring is ~1 g
> >>> rubber is ~10 g
> >>>
> >>> I completely ignored the skirt and the rubber
> >>> as being much lighter than the main knob part.
> >>>
> >>> Now I can use a much lighter drag, similar to FT1000,
> >>> and VFO knobs are much more pleasant to use.
> >>>
> >>>
> >>> 73,
> >>>
> >>> Sinisa YT1NT, VE3EA
> >>> ______________________________**_________________
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> >>>
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>
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