[Milsurplus] Navy RBE diversity receiver info?

[Nick England]

And a poor quality photo
See attached
Nick England K4NYW
www.navy-radio.com


On Fri, May 2, 2025 at 10:34 AM Nick England <navy.radio at gmail.com> wrote:

> A little more info - it was evidently a 1939 GE contract.
> NOs-70248, 11 December 1939 & N171S-59715 , 25 July 1940
>
> Diversity Receiving Equipment RBE is a complete diversity
> radio receiving equipment suitable for use at Naval
> radio stations. It is used for diversity reception of continuous
> wave or interrupted continuous wave radio telegraph signals
> by either loudspeaker or headphones, or by telegraph recorder.
> The equipment also permits the reception of modulated
> continuous wave radio telephone signals, by headphone or
> loudspeaker methods, over separate channels without diversity
> combination of these separate channels. The components of
> the equipment are mounted on a cabinet type rack.
>
> Frequency Range:
>    System: 550 to 30,000 kc
>    Single and Dual Preselector : 550 to 32,000 kc
> Intermediate Frequency : 456 kc
> Input Connections: Single wire type antenna, balanced feed line or a low
> impedance concentric transmission line
> Input Impedance:
>    System: 600 ohms
>    Loudspeaker: 600 ohms
>    Single and Dual Preselector: 80 to 125 ohms
> Output Impedance (Single and Dual Preselector) : 80 to 100 ohms
> Diversity Combining Unit:
>    Type of Reception: Cw or icw
>    Maximum Speed: 500 words per minute
> Power Output (Loudspeaker) : 1.75 v
> Power Requirements: 115-v 60-cycle 1-phase ac
>
> Nick England K4NYW
> www.navy-radio.com
>
>
> On Fri, May 2, 2025 at 10:23 AM Nick England <navy.radio at gmail.com> wrote:
>
>> Does anyone have info about this HF diversity system?
>> The only catalog listing I find says CNA (National) 1949-40 obsolete.
>> Receiver (0.54-30 mc) was CNA-46142 which the Navy Type catalog says is
>> similar to RAO.
>> The NT catalog also lists these units for RBE
>>    CNA-50079 Diversity Combining Unit - combines output of three receivers
>>    CME-50090 Single Preselector (rack-mounted RME DB-20)
>>    CME-50091 Dual Preselector (two rack-mounted RME DB-20)
>> Fred Chesson lists a General Electric version
>>    CG-46142 (General Electric) receiver
>>    CG-49140 Loudspeaker
>>    CG-50079 Diversity Combining Unit (500 wpm CW)
>>    CG-50090 Single Preselector
>>    CG-50091 Double Preselector
>>
>> Nick England K4NYW
>> www.navy-radio.com
>>
>
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