Gary,
Thank you for the info on my Omni V.
Robert
KG4KGL
> On Sep 29, 2018, at 20:00, Byron Cordes via TenTec <tentec@contesting.com>
> wrote:
>
> I’ll have to pull filter ,good idea . Let you know tomorrow . Thanks
>
> Sent from my iPad
>
>> On Sep 29, 2018, at 6:21 PM, MadScientist <dukeshifi@comcast.net> wrote:
>>
>> OK, I am involved in three threads regarding Paragons, Omni 5’s and Omni 6’s
>> so I have gotten some crosstalk…
>>
>> If you select a filter position on your radio that has no filter in it, do
>> you still hear the clicking sound when tuning?
>>
>> Gary
>>
>>> On Sep 29, 2018, at 5:33 PM, Byron Cordes via TenTec
>>> <tentec@contesting.com> wrote:
>>>
>>> The radio is a Omni VI. Radio does rx and tx . can here and talk to people
>>> even on 20 meters where that vfo noise is . Higher noise floor on 40- 160
>>> you don’t here the vfo noise but on 20 meters it is very loud higher than
>>> the people talking when tuning . Stop turning vfo and radio sounds normal
>>> with people talking .
>>>
>>> Sent from my iPad
>>>
>>>> On Sep 29, 2018, at 5:23 PM, MadScientist <dukeshifi@comcast.net> wrote:
>>>>
>>>> Sorry, I misread… I was focussed on a previous radio (a Paragon).
>>>>
>>>> Your problem is most certainly due to the fact that the 5.0 to 5.5 MHz PLL
>>>> is going out of lock. This model does not produce any out-of-lock fault
>>>> regardless of the lock condition of the PLL so it can be out-of-lock with
>>>> no indication of that condition. The radio will still produce normal band
>>>> hiss but you will not be able to tune in signals.
>>>>
>>>> Oddly, he radio will still transmit in this condition, but well out of the
>>>> Ham bands! It will transmit on the frequency at which the VCO settles when
>>>> out-of lock, about 14.6 MHz, regardless of dial setting or display readout
>>>> reading. It will also be very unstable.
>>>>
>>>> From what you describe (now that I am on the right page model-wise) i
>>>> would suggest replacing the dual gate MOSFET in the loop IF.
>>>>
>>>> I recently repaired an Omni 6 that had the same problem as your Omni 5
>>>> has. That FET was the culprit and what’s worse, it pulled the alignment
>>>> due to leakage of the device. It was highly intermittent. The heat/cool
>>>> method was the only way I could point to it, but monitoring the loop test
>>>> point was the only way I could prove it to myself.
>>>>
>>>> The way to really determine if this is the fault is to put a voltmeter on
>>>> the 10K resistor test point of the loop IF (That
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