[Milsurplus] Chicken or Egg Question

[Pete Lancashire]

I'll toss in another question .. why so many variations of the BC-221 ?

Jack .. how about a scan of the page ?

-pete

On Wed, Dec 8, 2010 at 9:23 AM, Jack Antonio <scr287 at att.net> wrote:
> It is frustrating trying to clean and  organize the shack, I keep
> getting distracted.
>
> Current distraction is that I found a Bendix Aviation Radio Catalog,
> copyrighted 1941.
>
> In it is an IF-12 Portable Frequency Indicator, which looks exactly like
> a BC-221.
>
> So the question is, which came first? Did the military adopt the civilian
> component, or did Bendix market commercially something developed
> for the military?
>
> Also found a listing for an RA-12 Instrument Landing Receiver, and
> its companion ground transmitter, the TG-12  Looks
> like a midway step between the Navy's ZA system, and the Army's later
> RC-103 and AN/ARN-5.  Used one 93.3 Mc transmitter for both localizer
> and glide slope.
> This is going to take some more research. (Another distraction).
>
> Jack Antonio WA7DIA/4
>
>
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