[Hammarlund] Need suggestions of professional Hammarlund restoreres
for SP-600-JX-1
Todd Bigelow - PS
[email protected]
Tue, 02 Dec 2003 10:31:43 -0500
K. Rice wrote:
>Dear Friends,
>
>I'm seeking a professional electrical restorer for an SP-600. I have
>appended a complete description with numbers, etc, below my signature.
>
Hi Ken -
Welcome to the list and congrats on the wonderful gift. It's nice to
know folks think highly enough of us to keep us in mind for such things,
particularly during such a rough time for themselves.
You have an excellent radio there, Ken. Properly restored and working,
it is perhaps the best receiver for what we refer to as 'band cruising',
or making rapid and easy excursions from one end of the dial to the
other. It's also great for just casual SW listening. The main tuning has
flywheel weighting added for ease of tuning and a silky smooth feel.
Audio is also very respectable, sensitivity is very good to excellent
and stability is as well, once any bad components have been replaced and
the proper tap has been selected on the transformer.
In the not-so-distant past the SP-600s had a pretty bad reputation for
drifting and for having bad capacitors in them. The drifting is usually
attributed to improper tap selection (something pointed out to me by Les
Locklear, another '600 aficionado), and the 'bad caps' rap came from
some of the units having a specific type of Sprague capacitor installed.
These caps, often referred to as 'Black Beauties' tend to crack and
leak oil after a period of time, which diminishes the performance of the
rig (to say the least). There are other black caps out there as well
(some also made by Sprague) which do *not* have this problem.
Unfortunately somewhere along the line the information went from someone
who knew their stuff to someone who wanted to sound like they did, and
the original info ended up in the corrupted form of '*all* caps are bad
in *all* SP-600s, so you must replace them *all*'. In fact, many later
SP-600s have mica and ceramic caps throughout and none of the older
'tubular' types. In the last year or two as more people have discovered
these fine receivers, a better level of clarity and understanding has
replaced the inaccurately parroted stories from before, and the SP-600
has regained its previous reputation as a great receiver - and then some.
I'm not sure how receptive he'd be to being called an 'expert', but my
recommendation would be hands down for Al Parker to help you out with
whatever you need. Al is one of the folks responsible for the Hammarlund
Historian site online and he's been restoring these fine rigs for a
while, now. There are a couple other guys who dabble in them a bit, but
if it were up to me, I'd go with Al. He does excellent work, he's
honest, and he likely knows the SP-600 as well or better than anyone
else out there.
Here's his information:
Al Parker, W8UT
New Bern, NC
email:
[email protected]
Homepage:
http://www.thecompendium.net/radio/
Hammarlund Historian page:
http://www.hammarlund.info
Good luck with the rig, Ken. I'm sure you'll enjoy as much or more than
any receiver you've ever operated.
73, Todd/'Boomer' KA1KAQ