[TenTec] Omni 6+ problem inquiry

[Robert]

Call TT, and ask them to ship you another encoder for the main tuning knob. 
I had them do that for my 301 kit when I got a bad encoder, and the entire 
problem vanished.. If you are out of warranty, it will cost you about $50 
for the part...

At 08:53 AM 11/13/99 , you wrote:

>I have a Omni 6+ that has rather annoying problem and I wonder if others
>might have noticed it too. The problem is not affecting the operation of
>the radio, it is Just DAMN annoying..... expecially with a price tag of
>2600 bucks.
>When tuning the radio down in frequency (Turning the knob CCW) at a rate
>of about 2  revs per second, the KHZ digit will very quickly jump to
>another digit, then back again.
>You might see the digits change say from 8, 7, 6, 7, 6, 5, 4, 3, 2, 1,
>2, 1, 0 etc.
>What acutally is happening is that the processor is causing the PLL to
>jump up in frequency by about 1Khz or so. The amount of jump is
>dependent upon the tuning rate settings. i.e., the slower the tuning
>rate the smaller the amount of jump.
>I have found that with a 5KHZ setting, the jump is about 1khz. This
>malady is not a function of the encoder as that would cause smaller,
>minute jumps.
>Another test that will mimick the above and skitz out the CPU big time,
>is to run the PLL to the LOWEST frequency it will tune (any band), go to
>the FM mode,  then turn the knob in the CCW direction at a rate of about
>2-3 revs per second. If your radio is ok, you will not see anything
>happen. If your radio has this problem like mine, you will see the lower
>4 digits quickly change to other digits. If you stop quick enough, you
>will notice the display is above where it should be. In other words, it
>jumped up in frequency.
>Another test is to zero the display to 7.000.00. with the finger index
>at a particular point, turn the knob in the cw direction 6-7 turns, note
>the frequecy you end up at. Then reverse direction and move the same
>amount of turns in the CCW direction. You should end up at the same
>frequency you started at (7.000.00) or very close to it.
>
>This radio has been back for repair twice. Each time it comes back not
>fixed. TT said they can not duplicate the problem, AND that all Omni 6's
>will do the same thing with the tuning knob test.
>Has anyone else experieced this same problem and what was the fix. Also,
>I would be interested if some of you guys would do this test with your
>radios and let me know if you see the same thing.
>Thanks.
>
>
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