[Hallicrafters] SX-101 MKIII

[Pagel, Mike]

Hi Bill:
 
First, go to http://www/w9wze.org and look for the "SX101 Lineage" link.
 
Second, my SX101 MK III manual does indeed show a 12BY7 as the first conversion oscillator tube.  On the other hand, my SX-101 MK 1 has a 12AU7A as the first conversion oscillator tube.
 
On a 10 point scale, my manual is about a 6 but I'd be happy to share a photocopy if it would help.  Just let me know.
 
73, de Mike, K9UW
Amherst, WI

________________________________

From: hallicrafters-bounces at mailman.qth.net on behalf of Bill Gerhold
Sent: Sat 9/11/2004 10:43 PM
To: Hallicrafters at mailman.qth.net
Subject: [Hallicrafters] SX-101 MKIII



I have a recent acquisition of an SX-101 MKIII receiver.  Looking at the
BAMA site,
SX-101 MKII, (a MKIII schematic doesn't seem to be available), the first
conversion
oscillator tube is shown as a 12AU7A.  The MKIII I have here has a
12BY7A in this
position as marked on the chassis and that is what I found in the
socket.

My confusion is Chuck Dachis's book indicates all the different
variations of the
SX-101 use the 12BY7A as the 1st conversion oscillator.  The only
mention of
differences between the MK1, MKII and MKIII is "Minor electrical and
cosmetic
changes" between the different versions of this receiver.

Apparently, the MKII tube complement is different from the MKIII at
least in this
instance.

Anyone have a service manual for the MKIII or anything to add to this
apparent
discrepancy.  Or am I making too much of this.

Bill (K2WH)

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