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

[Peter Gottlieb]

Couldn't shock mounts be designed to mitigate those problems?


On 11/4/2015 10:35 AM, Ray Fantini wrote:
> Like the picture on the battleship, especially the gauges and manifold up in the top left hand corner. Was the LR steam powered? I have read somewhere that the TBY had to be used on a battleship due to the vibrations from repeated fire of the main guns had rendered the shipboard radios inoperative, have a hard time believing this considering the quantity of radio equipment on board and wonder if that was just a failure of the early UHF gear that was intended to net with the TBY? So with all the vibration and violence involved in firing the primary weapons where would something as sensitive as the ships master reference be located?
>
> Ray F, the other RF
>
>
> -----Original Message-----
> From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Rob Flory
> Sent: Wednesday, November 04, 2015 10:23 AM
> To: Nick England
> Cc: milsurplus
> Subject: Re: [Milsurplus] Frequency Measuring Test, What's an LR?
>
> It is indeed a General Radio product.
>
> RF
>
> On Wed, Nov 4, 2015 at 5:34 AM, Nick England <navy.radio at gmail.com> wrote:
>
>> 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
>>
>>
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