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Today's Topics:
1. Re: Convoy Communications manual (Nick England)
2. Re: [ARC5] Vintage LF/MF Fun with my BC-453B (Dennis Monticelli)
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Message: 1
Date: Thu, 20 Nov 2025 14:37:08 -0500
Subject: Re: [Milsurplus] Convoy Communications manual
Message-ID:
Content-Type: text/plain; charset="UTF-8"
And an actual WW2 convoy plan including communications is on pages 42-50.
Nick England K4NYW
Chapel Hill NC
www.navy-radio.com
>
> I recently acquired and scanned NAVPERS 10875 "Merchant Ship Communications".
> It is a 1952 edition but it looks like things mostly followed WW2 practices.
> Chapter 2 contains a history of WW2 convoy operations and changes afterwards,
> This isn't a radio operations manual, but contains a lot of interesting info.
>
> I have also posted a 1945 "General Instructions for Naval
> Communications Liaison Officers"
>
> Nick England K4NYW
> Chapel Hill NC
> www.navy-radio.com
------------------------------
Message: 2
Date: Thu, 20 Nov 2025 12:18:47 -0800
Subject: Re: [Milsurplus] [ARC5] Vintage LF/MF Fun with my BC-453B
Message-ID:
<CADgAsSS=NyFQDWdRwcCG0vsLOSbLzkMeJHwaY5yHcxp0Apj38w@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hey, that's a great idea, Thomas. Conducted line RFI plagues that radio.
That's why I used batteries.
Dennis AE6C
wrote:
> *One modification to the BC-453 that I'd highly recommend...*
>
>
>
> *The tapped antenna input coil is a problem; in many situations it allows
> unwanted ground loops*
>
> *that greatly increase noise sneaking in from the AC power line.*
>
>
>
> *On one set I had, I pulled out the antenna coil and disconnected the tap.
> I then replaced it with a*
>
> *link coil of maybe 20 turns wound over the coil. The plug in terminals
> can be configured to allow*
>
> *the new link coil to be connected to the antenna input.*
>
>
>
> *The noise level went down dramatically, and after some realignment the
> set became a first class *
>
> *NDB hunter. *
>
>
>
>
>
> *Mr. T.*
>
>
>
>
>
> -----Original Message-----
> Sent: Nov 19, 2025 3:15 PM
> Subject: Re: [Milsurplus] [ARC5] Vintage LF/MF Fun with my BC-453B
>
>
> Mark,
>
> That is a fun thing to do. 10 yrs ago I did the same thing with a rebuilt
> BC-453B. One tip I will pass along is to use batteries if you can,
> especially the B+. I ran eight 9V batteries for B+. Divorcing the
> receiver from the AC line reduces noise pickup from all the crud that
> modern electronics dump into the line. It was a significant difference in
> my situation. Also if you haven't already, adjust the IF transformers for
> looser coupling by pulling up on the tabs. This will reduce the noise BW.
>
> Dennis AE6C
>
>
>> Hi Everyone
>>
>> For the past 2 years I've been using my RBA receiver for vintage LF/MF
>> fun, and have logged over 200 NDBs each year. This year I decided to use
>> my BC-453B receiver. It's been recapped, and all out of tolerance
>> resistors (sans one....) have been replaced.
>>
>> [image: image.png]
>>
>> Since early November, I've logged 52 NDBs. I'm hoping to log 100 this
>> listening season (which runs through March).
>>
>> 73 Mark K3MSB
>> ______________________________________________________________
>> ARC5 mailing list
>>
>
>
>
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