[Milsurplus] SCR-288/BC-474

[John Hutchins]

Nick -
Try online at ALLTEX Electronics or FRY's,  to bad Ocean State 
Electronics  is gone drat....
Hutch

On 1/4/2012 8:03 AM, Nicholas Hopper wrote:
> Thanks Dave, luckily I did not remove any wiring yet until I confirmed it
> was right.  I'm in the process of finding a good local store.  (The only
> thing so far I have found is Radio Shack which doesn't look promising.)
> There got to be something around here.  I do have a multimeter but planning
> to pick up a new one as this is an old one from my grandfather and is having
> issues.
>
> Thanks for all the info.  I was wondering if the conversions had been done
> because I couldn't find anything out of the norm from the wiring diagram.
>
> Nick
>
>
>
> Good Morning.  I had to work late last night and just got up, so
> getting ready to go do it all over again ;-).
>
> That is one nice, clean 474.
> Photos look excellent, and the great news is it appears the rig
> has not been hammified; the 6C4 mod does not appear to
> have been done.   And you still have the original receiver
> audio output transformer, which is good news.
> If you never connect the minus (-) side of your
> 90-volt supply to ground, hooking it only to its designated
> supply pin, it will serve you well.  I've replaced them in
> three of these and finding a substitute that will fit in that
> little place is a chore.
>
> I should never give advice before coffee and without the rig
> I'm talking about in front of me, because that was the wrong
> capacitor- I "disremembered" where it was.  The square thing
> is actually the modulation transformer, so if you took a wire loose,
> please put it back... my most humble apoligies.
> Let me get out the proper manuals when I get home so I don't
> lead you astray again.
>
> This radio is an excellent candidate for returning to operation,
> and you can certainly get it done.  But I won't kid you-
> it's an advanced project for a beginner.
> If you have someone locally you trust and feel is competent,
> you might consider enlisting their aid.  And, like owning and
> driving a WWII jeep or a Model "T" Ford, operating an
> SCR-288 takes some patience and practice.
> But then, if it was easy everyone would do it and it wouldn't
> be so cool  ;-)  And you have the bag for the generator-
> that makes *me* jealous!  Any of the bags for 288
> are the rarest of rare birds.
>
> To get started, before I head back to work-
> The first steps, just as they would be if working on an old car,
> are "inspect, clean and lube."
> Do you have an electronic parts supply house nearby,
> something like Frys or a local storefront?
> You'll need a chemical wash that removes crud from switch
> contacts and other controls.  A good product is called
> "De-Ox-It D5"   It comes in a black, white and red spray can.
> It ain't cheap but it works good.  You'll also need some
> "3-N-1 Oil" (stop cringing, Mike! It works OK ;-).
> And, if you can find it, one of those "spot oilers" similar to this:
> http://static2.promopeddler.com/prodbigimgs/5560000/5562845.jpg
> If you can't find one of those, a toothpick can work.
>
> The photos you provided will make a great way to point
> to the places we need to work.
> Do you own a multimeter?  Had any experiance in using one?
> Don't be bothered if you haven't; nobody here was born
> knowing any of this stuff.  Someone had to show them.
>
> Off to work.  Maybe I'll get home at a decent hour this time.
>
> 73 DE Dave AB5S
>
>
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