[Hallicrafters] S40 B alignment with limited equipment

[Bill Gerhold]

Probably one of the best pieces of test equipment which can be found on
the internet right now, is the AN/URM-25 series of signal generators.
These
generators (Military) are very accurate and will go down to 10khz which,
is
below the Hallicrafters IF's of 50khz.  I just got one and it is a
fantastic
piece of equipment for aligning these great receivers.  As to measuring
the
output of the receiver, a simple AC voltmeter connected to the speaker
leads
will perform that job.  I use the old reliable Simpson 260 series of
VOM's.

73 de K2WH   
http://groups.yahoo.com/group/The19Group/
 

-----Original Message-----
From: hallicrafters-bounces at mailman.qth.net
[mailto:hallicrafters-bounces at mailman.qth.net] On Behalf Of Jim
Brannigan
Sent: Saturday, October 16, 2004 23:57 PM
To: Paul Buhler; hallicrafters at mailman.qth.net
Subject: Re: [Hallicrafters] S40 B alignment with limited equipment

Paul,
As pointed out previously, you need some kind of signal to align a
receiver.
It can be off the air, a crystal calibrator, signal generator, noise
generator or anything that will input a signal into the receiver.
You also need a method of measuring the output from the radio, although
sometimes, just listening to the speaker will be enough.
A signal generator is a handy piece of test equipment to have around.
You
should be able to scare up an old Heath or Eico unit for very little
money.

Yes, TV alignment tools should work.

Jim
> How do you go about aligning an S40B, without a signal generator, but
I
have
> access to a DX440 receiver (digital readout from 150 kHz to 30 MHz
with a
> BFO) and a frequency counter, and a digital multimeter. Plus, would
the
> alignment tools from Radio Shack (for TV alignment) work. Thanks and
thanks
> for the information on my previous questions. Paul  VE6RTR

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