Glenn,
I wish I could do more, but I loudly applaud your efforts! I do not have
equipment for you, nor skill or expertise or time to invest in the project ( I
wish I did! ). So... one thing I can do is say thanks!
Jim, AF3Z
On Jul 20, 2011, at 1:36 PM, Glenn wrote:
>
>
>
> Hi Group,
>
> Based on the lack of response to my previous post regarding a possible NEW
> replacement logic board for the Omni 6, I have put that project on the back
> burner for now.
> That would be a daunting task and not one I am willing to invest time and
> lots of money into unless there is more interest at some point. So, the next
> best solution is gearing up for repairs and mods to the existing
> logic boards since Ten Tec is now sending some home as unrepairable. If this
> is ever going to happen, now is the time to do so.
>
> My only reason for looking into this is my affection for the Omni 6 series
> radios. I am not enamored with DSP IF derived configurations yet, and
> personally have great respect for the performance of the O6. The O6 with the
> INRAD roofing filter is awesome.
>
> Part 1: I looking for Omni 6 version 1, 2 , 3 or 6+ as well as Paragon's
> and Paragon II's that are either lightning damaged, or otherwise
> unrepairable.
> Cosmetic condition is not too important; just not any that really were used
> as boat anchors or shotgun target practice..
> These will be used for test beds to repair logic, AF/IFboards and PA's and
> free up my personal equipment. Also looking for units to be parts queens.
> Let me know what you have and a REASONABLE price. Donations going toward
> Logic board support are always appreciated.
>
> Part 2: I have found a source for the DSP and RTC Ic's on the Omni 6 Logic
> board. and have ordered a large quantity of these as well as the rest of the
> IC's on the Omni 6+ logic board.
>
> Is there interest in an IC kit for the Omni 6+?
>
> I can tell you most of the IC's are soldered in and unless you have
> experience and equipment, replacing the IC's is not recommended.
> Of course, there is no reason to replace any of the IC's if your board is
> working properly. This is not like shotgunning all of the tubes in an old
> Hallicrafters receiver. Hi Hi
> My point in offering a kit of spare IC's is the risk of not being able to
> find them later. I was VERY LUCKY to find some of the parts I did find.
>
> I have one O6+ and one Paragon logic board that I have installed gold plated,
> machined sockets for each IC on the board to use as a test board to QC
> inventory and possibly to verify questionable parts for a board being
> repaired.
>
> Part 3: The schematic in my Omni 6+ manuals and the one online at the Ten
> Tec site has a number of errors. Does anyone have a correct Omni 6 or plus
> manual that is correct? Check the wiring of U15 and U16 or locate U23 in the
> parts list or buzz out the location of the crystal used for the RTC, that's
> for starts. Try to follow the address or data lines around the board????? I
> think they were trying to confuse the communist, sure worked on me.. Hi Hi
>
> I have started the task of rewritting the schematic. Is anyone willing to do
> some of the work? If there is a real desire to keep these running well into
> he future we need parts and accurate docs. I have also made large clear color
> pics mapping the location of all IC's, connectors and transistors. This is a
> set of 3 pics, one for each component type. I have over 18 hours doing this
> alone. I have also made and excel spread sheet listing all of the
> IC's,correctly, their descriptions and board locations as well as my source,
> as of now for the vendors who have these. Next is mapping out all of the
> electrolytic cap's which will soon be very dated.
>
> I am documenting bus data and saving files with my logic analyzer as I
> stimulate functions from the front panel as well as logging pulse states with
> my digital O scope to use as a comparison for testing boards with problems.
> So far, I have identified about 85 significant logic states to aid in
> troubleshooting. This was a major time saver on one of the Omni 6 boards that
> I recently repaired after Ten Tec had declined to effect the repair for a guy
> in TX.
>
> Any suggestions or assistance will be appreciated.
>
> Regards,
>
> Glenn WA4AOS
> DSM Labs
> Laurens, SC
> w w w dot d s m l a b s dot c o m
>
>
>
>
>
>
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