[ARC5] Whatsit???

[D C *Mac* Macdonald]

Label shows it classified as a transmitter, BC-1149-A.
 
Is it some sort of marker oscillator test gear?
 
(http://cgi.ebay.com/US-Army-Signal-Corps-Radio-Transmitter-BC-1149A-/400231913950)
 
I'm sort of interested as a curiosity, but oh, the ridiculous shipping cost!

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* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* Oklahoma City, OK *
* USAF, Ret (61-81) *
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