[ARC5] TN 1B/APR-1 and TN 2B/APR-1 Military Radio Tuners

[J. Forster]

Ken,

I am very much interested in a very clean, unmodified, APR-4 and PIs. Most
all I've seen are beaten up or hammed.

-John

=================


> On 20 Jun 2013 at 14:19, Jim Sinclair wrote:
>
>> Gordon,
>> I was working in my dad's attic and found a TN-2b/apr-1. He worked on
>> aircraft radios during WWII . Call was w6fkq. Seems to be intact. Any
>> interest? Jim Sinclair
>
> Hello, Jim:
>
> Those tuning units will work in several similar receivers.
>
> The RDO is one.
>
> There is some interest in that series of equipment, but not as much as I
> think
> there should be.
>
> The receivers were designed specifically to search wide frequency ranges
> to
> find the frequencies of enemy equipment, mainly radar.
>
> Most of those TUs are pretty "deaf" in modern terms, but they were
> designed
> to look for signals that were very strong anyway, so it didn't matter.
>
> The APR-1 is a simplified airborne version of those search receivers.
>
> The RDO is very large, very heavy, and is meant to be installed on a
> capital
> ship.
>
> The TUs (TNs) covered from something like 22 MHz up through at least
> 10,000 MHz. Maybe even 30,000 MHz. I can't remember. Some, at least, are
> motor driven.
>
> I have at least 6 different units here, each covering a different
> frequency
> range.
>
> I sold a few duplicates to a collector in Australia a few years ago, but
> that
> was the only person I have ever run across who was interested, before or
> since.
>
> He didn't pay much for them, but I was glad to get rid of them at the time
> to
> someone who appeared to apprecate them.
>
> Ken W7EKB
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