[Milsurplus] Questions on WWI Radio

[Ed Sharpe Archivist for SMECC via Milsurplus]

By the  way...   at the museum we  have     biplane  spark transmitter     
but.... need a  good  photo of it installed in the plane......   for a  
display!!!!!
 
thanks Ed Sharpe archivist for smecc
 
 
In a message dated 8/24/2014 11:34:19 A.M. US Mountain Standard Time,  
milsurplus at mailman.qth.net writes:

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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