Please send all Corsair II manual discrepancies to me as well. I've tried
to compile a list of Corsair manual errata at
http://corsair.wikidot.com/corsair-errata
73, Barry N1EU
On Wed, Jun 8, 2016 at 8:49 AM, Reeve Family <reevefamily@cogeco.ca> wrote:
> Yes Barry, I feel badly that I did not take photos to document that whole
> LPF-TR board removal process. I would normally do that but was too heavily
> involved in the trouble shooting process and not sure at the time where it
> was leading.
>
>
>
> I did however make some notes and drawings at the time while I was
> disassembling the Band Switch in order to get the LPF-TR board out of the
> chassis. If you want I could try to scan and submit those.
>
>
>
> I must admit, I am not great with navigating and posting with online user
> groups. Can you give me an email address that I should send .jpg or .pdf
> files to in order to have them posted?
>
>
>
> While trouble shooting my problem I also discovered some changes on the
> LPF-TR board regarding biasing resistors for the PIN diodes. I bought my
> Corsair II new from a dealer at the Dayton Hamfest so presumably these
> changes were done at the TEN TEC factory. I recall reading somewhere about
> improvements to performance in PIN diode biasing, however I did not make
> these changes to my Corsair and so can only presume they were made at the
> factory but not documented by TEN TEC on the schematic.
>
>
>
> Regardless of who did the modification, here is what I found on the LPF-TR
> board in my radio:
>
>
>
> 1. 470 ohm resistors were installed in series with D1 and D2
>
> 2. R3 had been changed from 330 ohms to a 100 ohm resistor
>
> 3. R6 had been changed from 150 ohms to a 47ohm resistor.
>
>
>
>
>
> It was a bit discouraging to find that the more details I looked into, the
> more discrepancies I found with the schematics in my manual. Having said
> that, I still love my Corsair II and will not likely ever part with it.
> Accordingly, I have kept careful notes on every modification or repair ever
> made to my Corsair in the 28 years that I have owned it.
>
>
>
> 73,
>
> Rick VE3ORY
>
>
>
>
>
>
>
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>
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