[Milsurplus] Frequency Measuring Test, What's an LR?

[Nick England]

Photo of BB-55's LR here
http://www.navy-radio.com/ships/bb55/patch-086.JPG

IIRC this is a General Radio gadget.

On Wednesday, November 4, 2015, Rob Flory <farmer.rob.flory at gmail.com>
wrote:

> An old buddy who used to hang around on a submarine asked me what an LR
> is.  Hi Howie!
>
> The LR, too big for submarines or casual collectors, is found on larger
> vessels and shore stations.  I have played with one casually at USS
> MASSACHUSETTS but was never man enough to really master it.  I'm not sure
> who I admire more, the man who can operate it or the man who can lift it.
> It dwarfs the RBB and RBC receivers it usually hangs around with.
>
> It has a crystal controlled multivibrator that makes harmonics every 100,
> 20, or 10kc.  In between those points there is an audio beat note meter to
> tell you the frequency increment from the crystal generated landmark.
>
> The LR is patched to the antenna panel where its signal can be patched to
> receivers to set them up, or to the master oscillators of the transmitters.
>
>
> There is some information here, thanks Nick as usual for your contributions
> to documentation of this cool old stuff.
>
> http://www.virhistory.com/navy/manuals/cemb/cemb05-l.pdf
>
> RF
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-- 
Nick England K4NYW
www.navy-radio.com