Bob,Got itTnx JimSent from my Galaxy Tab® A
-------- Original message --------From: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: 9/29/20 10:00 PM (GMT-05:00) To: Discussion of Ten-Tec Equipment
<tentec@contesting.com> Cc: jbrannig <jbrannig@verizon.net> Subject: Re:
[TenTec] OMNI VI plus When I stated “clean connectors “ I didn’t say just a
select few or ones. They ALL should be cleaned. The Q-Tip provides
additional scrubbing action where as just applying any cleaner does not provide
scrubbing action. When finished one will have a pile of dirty and black Q-Tips.
Bob, K4TAXSent from my iPhone> On Sep 29, 2020, at 8:33 PM, jbrannig via
TenTec <tentec@contesting.com> wrote:> > Many good ideas....I have a service
bench geared to tube radios, but usable for the OMNI.Sniffing for RF is a great
start (after cleaning)I have to get my butt in gear and get serious about
this.Tnx again and keep 'em coming...JimSent from my Galaxy Tab® A> --------
Original message --------From: Ken Brown <kenradiobrown@gmail.com> Date:
9/29/20 8:48 PM (GMT-05:00) To: Discussion of Ten-Tec Equipment
<tentec@contesting.com> Subject: Re: [TenTec] OMNI VI plus Check all the things
that are common to both the transmit and receivefunction. If front panel
indications all seem normal, VFO readout etc. youcan probably rule out power
supply, or power distribution inside the rig(but not for certain) or the VFO
PLL system. I'd check all of the bandpass filtering and cables that are in
between theantenna port and the receiver front end. Maybe connect signal
source(antenna) bypassing those filters and see if the receiver perks up.How to
attack this problem is highly dependent on the tools you haveavailable. At the
very least a general coverage receiver with some sort ofsniffer loop or probe
would be helpful for listening for variousoscillators in the radio. A spectrum
analyzer would be nicer. Do you have asignal generator? If so you can test
whether you can input a signal to theIF stages and hear it.Find out what does
work and keep checking until you find what doesn't. Canyou couple a 9 MHz
signal into the receiver product detector and hear it?Can you couple a 6.3 MHz
signal into the 6.3 MHz IF stages and hear that?Can you couple a 9 MHz signal
into the first IF stages and hear that? Canyou hear the BFO with your general
coverage receiver using a pickup loopnear the BFO? Can your general
coverageCleaning contacts is a really good idea and likely to fix the
problem.DE N6KBOn Tue, Sep 29, 2020 at 2:20 PM Bob McGraw K4TAX
<rmcgraw@blomand.net>wrote:> Jim:>> How long has it been since the connectors
internally were cleaned?> Likely never. So it is time to unplug each one,
scrub the male pins> with a Q-Tip with contact cleaner applied and plug it back
in. Do NOT> spray anything into the radio.>> 73>> Bob, K4TAX>> On 9/29/2020
6:37 PM, jbrannig via TenTec wrote:> > My OMNI died suddenly.No signals on
receive and no RF out on> transmitEverything else functions as normal..ie.
frequency read out, audio> noise, bandchange...Any ideas on where to start
looking?Tnx es 73JimSent> from my Galaxy Tab® A> > null> >
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