You probably have a TS-164 aircraft unit designed to be rack mounted next to the  BC-348 in the radio space of a B-29.  I’ve had several of these housings, and I prefer them, because I always add a 117V power supply.

Just slap some rubber feet on the bottom rails, and you have a very simple and accurate meter.  They are built to be dropped into a combat zone and are indestructible!  All frequency-determining components are either fixed (like the beeswax-coated coils) or machined from a big chunk of brass.

As long as you have the calibration book with the matching serial number (an absolute necessity, BTW), they will work indefinitely!

73,
Mike, WB0LDJ


Sent from AT&T Yahoo Mail for iPhone

On Thursday, August 6, 2026, 23:06, [email protected] wrote:

Send Milsurplus mailing list submissions to
    [email protected]

To subscribe or unsubscribe via the World Wide Web, visit
    http://mailman.qth.net/mailman/listinfo/milsurplus
or, via email, send a message with subject or body 'help' to
    [email protected]

You can reach the person managing the list at
    [email protected]

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Milsurplus digest..."


Today's Topics:

  1. BC-221 on Shock Mount (Mark K3MSB)


----------------------------------------------------------------------

Message: 1
Date: Fri, 7 Aug 2026 00:05:13 -0400
From: Mark K3MSB <[email protected]>
To: ARC5 <[email protected]>, List Milsurplus
    <[email protected]>,     "Military Radio Collectors Association
    ([email protected])"    <[email protected]>
Subject: [Milsurplus] BC-221 on Shock Mount
Message-ID:
    <CABdVoaC8PejG8XgQfK1oN6krHdQj1VbL8n4ftH19PbNG6Dg8yA@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi Everyone

I have a BC-221N that is not in the typical metal case for portable use.

Rather, it's on a shock mount.


[image: image.png]
[image: image.png]

I've not encountered one like this before.

I know various bomber aircraft had a BC-221 (portable unit) stored on
board,  and I'm interested in learning when this type of mounted unit was
used instead.

I didn't see anything in TM11-300.

73 Mark K3MSB
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20260807/bd1b569a/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 276364 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20260807/bd1b569a/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 721523 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20260807/bd1b569a/attachment-0001.png>

------------------------------

______________________________________________________________
Milsurplus mailing list
Home: http://mailman.qth.net/mailman/listinfo/milsurplus
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]


End of Milsurplus Digest, Vol 268, Issue 11
*******************************************