[Milsurplus] VRC-7 and PRC-25 successes
aGEnuine Ham
gl4d21a at juno.com
Mon Jul 12 17:51:31 EDT 2004
Hue:
Motorola and other manufacturers (Link? Bendix? ???) built portables
with tube receivers, but GE's initial hand carried radio, 1957 or 1958
("Progress Line Portable") had an all solid state receiver. I have seen
low band Motorola portables of that vintage with sub miniature tube
receivers in those little individual slide-in modules. The GE
transmitters were tube RF (1AD4s with a pair of 6397s in the output),
with one transistor in the audio. The early receivers were unique to
that product, with later models adopting the RF and detector boards out
of TPL. Most of the radios built were high band, but there were low band
versions manufactured. Portables with the receivers missing were easy to
come by as the receivers were removed and put in monitor service in a
more convenient package. No 450 MHz versions ever built, however. First
450 talkies were outsourced, Tiny Talkie from Denver(?), being one of
several.
I have both the low band and high band PL Portables still here on the
shelf, and need to apply power supplies and see if they still work. The
two D cells for the transmitter filaments are easy, but the 67½ volt B
batteries are a little pricey these days. Receivers run on 12 - 15 volts
at very little current, so that's easy also.
73,
George
W5VPQ
On Sun, 11 Jul 2004 19:50:21 -0700 "Hue Miller" <kargo_cult at msn.com>
writes:
>
>
> Was this one of the little portable rigs full of submini tubes in
> the receiver section,
> 5678's and 1AD4's? I didn't know any of those rigs worked on
> lowband vhf.
> -Hue Miller
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