Mark
Good morning I have a BC 221 and it’s a T model made by Zenith. What manufacturer made your BC to 211? I’ll try to confirm what you’re asking but it may be different on the T model, incidentally I have a friend that’s converting the 221 tubes over to solid state these are just plug in modules and there is no permanent modifications everything can be switched back  put the tubes back in. Add the power supply back in and then everything will work perfectly.  But the nice thing is it will operate off of three 9V batteries which makes it a lot more portable and easy to use out in the field.
Mike
W1ZFB

On Wednesday, August 27, 2025 at 07:06:12 PM EDT, [email protected] <[email protected]> wrote:


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Today's Topics:

  1. Re: Seeking power connectors or cables for RBM    receivers
      (Hubert Miller)
  2. BC-221AK Question (Mark K3MSB)
  3. Re: [ARC5] BC-221AK Question ([email protected])


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

Message: 1
Date: Wed, 27 Aug 2025 20:41:50 +0000
From: Hubert Miller <[email protected]>
To: "[email protected]" <[email protected]>
Subject: Re: [Milsurplus] Seeking power connectors or cables for RBM
    receivers
Message-ID:
    <PH0PR20MB43742B4708C77178AFFA11CFE438A@PH0PR20MB4374.namprd20.prod.outlook.com>
   
Content-Type: text/plain; charset="us-ascii"


Last year i attended the "Beseda auction' near Portland OR. There were 5 RBM receivers and a switchbox BUT none of the receivers had a cabinet AND there simply was an oversupply of radios for the relatively small crowd of buyers. The RBMs did not sell and i do not know their fate. There were other radios with no cabinet to be found, like a HRO-60 i found, and some military Nationals and so forth, a friend got.  Is this a good way to lead your life, i thought; to be disorganized, have an irrational number of unfinished projects, and leave a huge mess for others.

At a hamfest i bought an RBM-hf and homebrew ACPS just for the PS
part. I sold the HF and kept the nicely done PS just to check out the several MF receivers i have, which will all have to go. I sort of fear a huge decline in the value of these things. The younger peoples' lives i think, just revolve around that little phone - computer.
-Hue Miiler

Sent from my Galaxy



-------- Original message --------
From: Thomas Adams <[email protected]>
Date: 8/27/25 05:42 (GMT-08:00)
To: [email protected]
Subject: [Milsurplus] Seeking power connectors or cables for RBM receivers


Howdy

I just scored a pair of RBM receivers at a hamfest and need to make up power supply cables.

Anybody got a couple of stray connectors around that they'd part with?

If so, drop me a note at [email protected]

Thanks,


Tom Adams, W9LBB


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Message: 2
Date: Wed, 27 Aug 2025 18:56:30 -0400
From: Mark K3MSB <[email protected]>
To: List Milsurplus <[email protected]>, ARC5
    <[email protected]>,     "Military Radio Collectors Association
    ([email protected])"    <[email protected]>
Subject: [Milsurplus] BC-221AK Question
Message-ID:
    <CABdVoaCTwZeAuO6_s4ebwYaUB9-XSyHDrjjE8YmY1kkkfQ3RtQ@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hello

I have a BC-221 whose ID plate says  BC-221E.  It is not an E variant.

>From the tubes, front panel controls, and TM11-300,  I think it's the AK
variant.

Looking at the front panel,  what is supposed to be behind the two antenna
connectors?

I tried discerning it from TM11-300.  I think it's supposed to be a 150 H
Choke (Part 24) in parallel with a 0.01 uF cap (Part 0-2).    Can anyone
confirm?

Thanks

Mark K3MSB
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Message: 3
Date: Wed, 27 Aug 2025 23:05:20 +0000 (UTC)
From: "[email protected]" <[email protected]>
To: List Milsurplus <[email protected]>,     ARC5
    <[email protected]>,     "Military Radio Collectors Association
    ([email protected])"    <[email protected]>, Mark K3MSB
    <[email protected]>
Subject: Re: [Milsurplus] [ARC5] BC-221AK Question
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8

We have a 221AK down at the museum. If you don't get any info before tomorrow, I could open it up & have a look.

Wayne
WB4OGM

On Wednesday, August 27, 2025 at 04:56:58 PM MDT, Mark K3MSB <[email protected]> wrote:

Hello

I have a BC-221 whose?ID plate says? BC-221E.? ?It is not an E variant.

>From the tubes, front panel controls, and TM11-300,? I think it's the AK variant.

Looking at the front panel,? what is supposed to be behind the two antenna connectors?

I tried discerning it from TM11-300.? ?I think it's supposed to be a 150 H Choke (Part 24) in parallel with a 0.01 uF cap (Part 0-2).? ? Can anyone confirm?

Thanks

Mark K3MSB


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End of Milsurplus Digest, Vol 256, Issue 73
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