Darrell Bellerive [EMAIL PROTECTED] made an utterance to the drakelist gang
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Terry,
Thanks for the message. I already have Garey's CD. It is indeed a great source
of information. I can see where it will be worth it's weight in gold once the
cover comes off my 2-B.
73,
Darrell
On Wednesday 12 March 2008 07:45, Terrell Hamilton wrote:
Terrell Hamilton [EMAIL PROTECTED] made an utterance to the drakelist
gang --
Darrell - Probably an unneeded suggestion, but I found Garey's CD on the 2B
to be very helpful. It's not free, but then sometimes advice (like this)
is free because it's not worth much. (grin) Here's the link for what it's
worth - hey, that's sort of funny...
http://www.k4oah.com
73
Terry
K7WLD
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Darrell Bellerive
Sent: Tuesday, March 11, 2008 11:31 AM
To: [EMAIL PROTECTED]
Subject: [drakelist] Help with 2-B Diagnosis
Darrell Bellerive [EMAIL PROTECTED] made an utterance to the drakelist gang
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Last night my Drake 2-B receiver displayed a new problem.
Over a period of a few seconds the normal static and static crashes on 80
metres was supplanted by loud static, which was maintained for several
seconds and then over a period of a few more seconds subsided. This whole
process repeated a few times. The loud static was smoother than the normal
atmospheric static and sounded more like white noise.
This loud static or white noise had no static crashes and movement of the
preselector did not affect the level. The s-meter followed the level of
this
noise. The RF and AF gain controls functioned normally as did all other
controls on the radio and the 2BQ. The top of the cabinet also felt much
hotter than normal particularly over the power transformer side of the
cabinet.
Since the preselector did not affect the level of the noise, it is unlikely
the noise was coming in on the antenna and therefore was generated
internally. Looking at the schematic the preselector is on the input side
of
the RF amp and the s-meter on the output side of the last IF amp, so the
problem could be anywhere in between.
Any ideas?
Another problem I have noticed is that the 'A' band receives 80 meters
exactly
like the 80 meter band does even though there is no crystal in the 'A' band
crystal jack. I suspect that the 80 meter crystal may have been jumpered to
the 'A' band crystal jack, but am curious as to why. The receiver seems to
function equally well on both bands.
I purchased the receiver last September at a hamfest and have not opened up
the rig, so have not inspected the crystal area inside the chassis.
Other than a bit of hum and a little distortion on AM signals detected on
the
diode detector, the radio has worked very well.
I have been collecting parts to recap the receiver and add the 'A' band to
160
meter mod, test all the tubes, and do a clean up, lube, and realignment.
Also
possibly do the AF Mod de W7ZFB, and the BB hum mod.
Looks like I will finally have to look under the hood.
73,
Darrell
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Darrell Bellerive
Amateur Radio Stations VA7TO and VE7CLA
Grand Forks, British Columbia, Canada
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