[ARC5] QRP Ops

[howard holden]

July 1949 QST

https://www.worldradiohistory.com/Archive-DX/QST/40s/QST-1949-07.pdf
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Page 17
Can't imagine anyone trying to reproduce this in today's world. 
But this uses a switch to select which 3A5tube(s) to light up. It would seem to be very slow on the T/R mode.

Howie WB2AWQ


From: arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> on behalf of Steve Miller <stevemillererie at hotmail.com>
Sent: Saturday, December 7, 2024 3:26 AM
To: Hubert Miller
Cc: arc5 at mailman.qth.net
Subject: Re: [ARC5] QRP Ops

I would love to see the QST article if you ever find it.
I’ll try to scan the ARRL QST archives.
73,
Steve WA3JJT




Sent from my iPhone

On Dec 6, 2024, at 4:41 PM, Hubert Miller <Kargo_cult at msn.com> wrote:


I  think there's really quite a bit of info on the web about the BN-1. i do plan to thoroughly scan and document the thing before ( "IF") I assemble it.
There was a QST article about a single dual section tube, ham transceiver. I have it somewhere but don't remember the date, but prewar. It used a more powerful tube than the little 3A5 of the BN-1. The BN-1 like the AN/CRC-7 however could alternately heat sections of the 3A5 filament to simplify T-R switching.
There was a commercial ham radio retro product of maybe a decade ago called something like "the One-der" which was basically the BN-1 circuit in a modern package. Its price was no bargain and i declined. I also thought the "retro" aspect was just dumb.
As i understand it, when the final  Midwest Radio auction was held, Boy Scout groups bought a lot of remaining radios for group projects. This as you can well imagine seems to have pretty thoroughly thinned out the remaining stock.
-Hue Miller



Sent from my Galaxy


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