[Milsurplus] WRR-2 Variants?

[Francesco Ledda]

I had forgotten about the 1 kHz to 500 Hz change

Sent from my iPhone

> On Oct 10, 2019, at 07:26, Nick England <navy.radio at gmail.com> wrote:
> 
> 
> AN/WRR-2 has 1.0 kc tuning, manufactured by National
>     RF CV-920/URR + IF/AF AM-2477/URR
>     manual NAVSHIPS 93550(A)
> 
> AN/WRR-2A has 0.5 kc tuning, manufactured by National
>     RF CV-920A/URR + IF/AF AM-2477A/URR 
>     manual NAVSHIPS 94715, renumbered to NAVSEA 0967-LP-137-3010
> 
> AN/WRR-2B has 0.5 kc tuning, manufactured by Arvin
>     RF CV-920B/URR + IF/AF AM-2477B/URR
>     manual NAVSHIPS 94715, renumbered to NAVSEA 0967-LP-137-3010 
> There was a change in the B version to improve the frequency response of audio filters FL1801 and FL1802 - that info is in change T-3 to 94715 (0967-137-3013)
> 
> All models have continuous tuning - it is just whether the Wadley loop synthesized mode locks at 1.0 kc or 0.5kc increments.
> 
> n.b. rack mount AN/FRR-59() and shelf mount AN/WRR-2() differ only by the cabinet mounting.
> 
> 
> Nick England K4NYW
> www.navy-radio.com
> 
> 
>> On Thu, Oct 10, 2019 at 1:25 AM Robert Goff <robert.h.goff at gmail.com> wrote:
>> I'm looking for information on the differences between the WRR-2, 2A and 2B.
>> 
>> I see that manuals covering the latter two versions are available from
>> several sources in both electronic and paper format. I believe one is
>> Navships 94715.
>> 
>> I have a WRR-2 (plain) which I would like to get going, so I'm
>> naturally curious about the differences between the different
>> contracts.
>> 
>> Anybody know?
>> Thanks,
>> Robert
>> W7MKA
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