[ICOM] 751A Main RF Board

[Gary P. Fiber]

Hi Eddy,

Kuni's email was w7jv at aol.com 

I think it will work, though they could reroute some circuits in the 
different main units, doubtful though.

Scott may wait until the day's end or does his email before his business 
day starts. He likely will answer as email seems to be his best method 
of contact.
Many on the list have used his services.

For desoldering I purchased a Hakko 808-kit. its a little bulky as its 
an all in one desoldering tool. Would have made those filters drop right 
off the board. :)
The Hakko 808 it sure seems to work well for the through hole stuff I do 
and the price when I purchased it was $160.00.

In those days Icom transmit audio was always a bit sharp, more 
communications quality than hi fidelity audio.
Some could be the SSB BFO being slightly out of adjustment or the mic as 
you mentioned.

Gary K8IZ



EP Swynar wrote:
> On 23rd October, Gary wrote:
>
> "...I hope Eddy comes to a good resolution for his IC-751A..."
>
> ****************************************
>
> Hi Gary,
>
> Well, I haven't heard back yet from either Scott or Kuni, but feeling
> suddenly emboldened here(!), I went ahead & put the new board into the
> rig --- in fact, I finished putting back the last screw just about a half an
> hour ago, or so...
>
> No idea yet if it works, or not --- I'm gonna save the joy (or, as is
> usually the case here, the AGONY! Hi) of the proverbial "...smoke test" for
> to-morrow. If it failed on me to-day, I don't think I'd be able to take it,
> what with all the work the board change entailed this afternoon
> (de-soldering all those IF filters was a real chore)...
>
> I sure do miss using the 751A on CW: a favourite pass time of mine here in
> the colder months is chasing DX on 160-meters CW. While the Yaesu FT-980
> does the job well enough, I always preferred the performance of the Icom in
> that mode...yet the reverse holds true on SSB: the Yaesu seems to have
> hands-down audio quality superiority over the 751A, in tests I've run on the
> air here...
>
> Maybe it's the microphones...?
>
> In any event, on a somewhat different note, I made a posting here the other
> day about the back-up memory battery set-up I employ in my 751A, for when I
> replace the lithium memory battery. Having become re-acquainted with its
> innards as I did this afternoon, I should like to correct what I said, i.e.
> the plastic battery holder is NOT hot-melt glued onto a handy internal
> shielding partition, but rather, it is attached to the back of the internal
> loudspeaker with a strip of double-sided foam tape.
>
> It's amazing what one forgets when one's rig never breaks down! (at least
> not up until now, anyway! Hi Hi).
>
> Will keep everyone posted as to the outcome of the test to-morrow...assuming
> anyone is really & truly interested, that is...!
>
> ~73~ Eddy VE3CUI - VE3XZ
>
> ----
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>
>