[GreenKeys] 1953 airborne RTTY unit

[Duncan Brown]

Nick,

Thanks for finding that & putting it on line!  I always wondered if the 
Navy bought any Kleinschmidt equipment.  Now I know that they must have 
bought at least one!

73 & have fun

Duncan
K2OEQ

On 04-Oct-15 21:01, Nick England wrote:
> Here's an interesting manual I recently got via eBay -
> http://www.navy-radio.com/rtty/conv/ug-xa4-u.pdf
>
> This is a modified Navy CV-57/URR (normally 455kc IF input) receiving
> converter modified to 300kc input to work with AN/ARC-21 or
> R-224/ARR-36.
>
> The modification also adds a RTTY keyer on the rear of the CV-57 for
> output to the ARC-21 transmitter. It outputs 100kc with 425 cps shift
> but I assume there is a doubler in the ARC-21 somewheres for 850
> shift.
>
> Accompanying equipment in the complete system comprises
> TT-4A/TG(XC-5) modified teletypewriter
> AN/ARC-21 receiver-transmitter
> R-224/ARR-36 auxiliary receiver
>
> Dunno what this was used for - (XA-4) implies one of several prototypes.....
>
> Nick England K4NYW
> www.navy-radio.com
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