Glen, we called the H models "Railroad Units" as that's where they were
used originally in service. I remember some came with the Bakelite
telephone handsets with a snap-in cradle. Robert W4RL
On 11/29/2014 5:15 PM, Glen Zook via Boatanchors wrote:
You are looking for something like the Motorola H21A- portable series or D21A-
/ D31A- mobile series equipment. Those use miniature tubes except the higher
powered mobile units use a 2E24 instant heating version of the 2E26.
The "B" versions (i.e. D21BAM) have a solid state receiver and tube type
transmitter.
There were other units, manufactured by various manufacturers, but the Motorola
equipment represented at least 80% of that type of equipment used during the
1950s. Glen, K9STH
Website: http://k9sth.net
From: "[email protected]" <[email protected]>
To: BOATANCHORS <[email protected]>; Florida boatanchors
<[email protected]>
Sent: Saturday, November 29, 2014 4:02 PM
Subject: [Boatanchors] Small Tube-Type FM Transceiver?
I'm looking for something mobile/portable for 10m.
Must be all-tube, OK if QRP, FM detector needs to
be a true discriminator - not slope-tuned AM.
OK if close to 10m but needing mods.
Space-charge (12v plate voltage) or low-voltage design
preferred - but OK if it requires usual tube voltages.
50's-era motorcycle or other commercial rig?
Surplus military?
Anything?
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