[ARC5] 4th Receiver Drift Test from KE6F Hallicrafters S38B

[Fuqua, Bill L]

  It was usable on CW, how many novice operators had S38 receivers? A lot of them.
We were more tolerant to drift back in the 50's and 60's.  I remember my electronics instructor
showing me how he copied CW on his regen., since it had a wooden case and front panel, he would
simply place his hand near the panel and move it back and forth to keep the cw pitch just where
he wanted it. It was a digital, 5 digits, fine tuning device.
73
Bill wa4lav


________________________________________
From: ARC5 [arc5-bounces at mailman.qth.net] on behalf of Bob via ARC5 [arc5 at mailman.qth.net]
Sent: Wednesday, December 02, 2015 7:31 PM
To: kb8tad at gmail.com; arc5 at mailman.qth.net
Subject: Re: [ARC5] 4th Receiver Drift Test from KE6F Hallicrafters S38B

To all on the S38B,  Since the S38 did stay withing a couple of KHz of the desired frequency for at least 15-30 minutes it had no problem staying with a typical AM BC or SW station to include WWV at 5 and 10 MHz, As noted, the short term stability was ok for CW as the IF bandwidth of the rascal is quite wide so the Wet Ware in my head was able to track the CW note as it danced around a bit.


73


Bob, KE6F



-----Original Message-----
From: Rich Post <kb8tad at gmail.com>
To: ARC-5 List <arc5 at mailman.qth.net>
Sent: Wed, Dec 2, 2015 8:37 am
Subject: Re: [ARC5] 4th Receiver Drift Test from KE6F Hallicrafters S38B

When visiting the Lowell Observatory in Flagstaff, AZ a few year ago, I
noticed a lone S-38 sitting in the room.  I wondered why it was there and
then it dawned on me.  It was a clock accurate to the second, ticking away
WWV in the dark night, no light needed.  Apparently it was good enough to
accurately stay tuned to WWV.  Which S-38 model?  I didn't check but it was
a letter version, so A, B, or C since it did not have the extra red slide
switch of the original no-letter version.

Rich KB8TAD

On Wed, Dec 2, 2015 at 1:32 AM, Bob via ARC5 <arc5 at mailman.qth.net> wrote:

>
> Hi to all and thanks to those who have been responding to the postings
>
>
> Here comes a few notes on the much maligned Hallicrafters S38B  AC/DC
> shock hazard and probably one of the most produced SW radios ever,
>
>
> Generally the radio that was tested is in good condition and worked on all
> bands although I only ran drift tests on 80 40 and a quick test on 20
> meters.  The test environment was nearly the same as previous runs, but due
> to what I assumed was going to be less than stellar performance the
> following processes were put into play
>
>
> ....  I did listen to some SW AM broadcasts along with WWV on 5 and 10 MHz.
>
>
>
>
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