Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Ron -
Absolutely. I don't think I ever used the jumper method once the power
supply was installed in the speaker cabinet though... :-)
Yeah, I think we've "slightly" exceeded the original 25 word limit........
73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual
<http://www.k4oah.com>
Ron Wagner wrote:
One big difference is that the AC3 has a set of resistors in the bias
line. Those resistors are jumper shorted out normally with a small
screw. Lifting the jumper short allows you to easily measure the idle
current (actually voltage across known resistance). Much easier then
trying to look at the fat needle against fat marking.
You can measure the current on the resistor under the chassis too, and
should to make sure the finals are balanced. But to set the current
easily the AC3 was a gem. IMHO.
Okay, something of a thesis. :-)
73,
Ron
============================================================
Visit my astronomy home page. http://www.dma.org/~wagner
Amateur Radio Station: WD8SBB - Ron and KB8NRP - Joann
============================================================
On Tue, 3 Jan 2006, Garey Barrell wrote:
Garey Barrell <[EMAIL PROTECTED]> made an utterance to the
drakelist gang
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Functionally identical. Electrically "almost" identical. Only real
difference is the age of the components.
14 words, not counting the sig!
73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual
<http://www.k4oah.com>
chuck grandgent wrote:
chuck grandgent <[EMAIL PROTECTED]> made an utterance to the
drakelist gang
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OK, simple question.
In 25 words or less, what's the diff between AC3 and AC4 ?
I've seen schematics, is the AC4 just a slightly more progressive
design ?
Thanx,
Chuck, K1OM
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