[Milsurplus] Questions on WWI Radio

[Ed Sharpe Archivist for SMECC via Milsurplus]

back then   they were SW....   which was our   now  500 to 1500 range....
 
 
In a message dated 8/24/2014 11:23:45 A.M. US Mountain Standard Time,  
brunneraa1p at comcast.net writes:

BC-14a  crystal receivers were used during WWI to receive spark 
transmissions from  spotter planes overflying the lines.  Crystal 
receivers are not  powered; they use the incoming signal, rectified by 
the crystal, feeding  headphones.  Crystal receivers will detect spark 
transmissions,  modulated CW, and amplitude modulated signals. I didn't 
find the tuning  range, but guess it's MW, (medium wave,) 300 Kc to 3 Mc.

Richard,  AA1P

On 08/24/2014 11:02 AM, Joe Connor via Milsurplus wrote:
>  There's an interesting WWI receiver listed on ebay:
>  
http://www.ebay.com/itm/WWI-1918-Signal-Corps-Crystal-Radio-Receiver-BC-14A-General-Radio-Co-/121416767705?pt=LH_DefaultDomain_0&hash=item1c4500d8d9
>
>
>  What frequencies would such a receiver receive? How would it be powered? 
I  have no connection to this sale and the price will be out of my league 
but I'm  curious as to whether a receiver like that could be made to operate 
and, if  so, what one could use it for. What would it have been used for 
during  WWI?
>
> Thanks.
>
>           Joe Connor
>  ______________________________________________________________
>

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