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 Post subject: Navy RBZ Receiver
PostPosted: Nov Mon 25, 2019 12:48 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4989
Location: La Porte, IN, USA
Attachment:
RBZ Receiver.jpg
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Bought on EPay: https://www.ebay.com/itm/WWII-Military- ... true&rt=nc


Nifty little set, quite sensitive and selective. More Pics to come:

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 Post subject: Re: Navy RBZ Receiver
PostPosted: Nov Thu 28, 2019 6:23 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4989
Location: La Porte, IN, USA
Attachment:
Open RBZ.jpg
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Attachment:
Open RBZ Power Pack.jpg
Open RBZ Power Pack.jpg [ 444.62 KiB | Viewed 607 times ]

8 9 volt batteries fit nicely, with room to spare. 1 Alkaline D cell is sufficient. Powers up nicely with plenty of sensitivity.

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 Post subject: Re: Navy RBZ Receiver
PostPosted: Nov Thu 28, 2019 6:24 pm 
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Location: La Porte, IN, USA
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 Post subject: Re: Navy RBZ Receiver
PostPosted: Nov Thu 28, 2019 6:32 pm 
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Posts: 4989
Location: La Porte, IN, USA
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RBZ cat-0963.jpg
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Attachment:
RBZ  cat-0962.jpg
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 Post subject: Re: Navy RBZ Receiver
PostPosted: Nov Fri 29, 2019 3:34 pm 
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Joined: Jan Mon 18, 2010 2:13 am
Posts: 19886
Location: Dayton Ohio
Fascinating little radio! Even has a tuned RF amplifier.

-Steve

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 Post subject: Re: Navy RBZ Receiver
PostPosted: Dec Tue 03, 2019 3:43 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4989
Location: La Porte, IN, USA
Replaced the crumbled rubber covered power cord. Have not replaced any capacitors yet, but it plays just fine...

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 Post subject: Re: Navy RBZ Receiver
PostPosted: Dec Tue 03, 2019 4:11 pm 
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Joined: Aug Tue 28, 2018 9:22 pm
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Location: Sanford Fla 32771
Interresting receiver. I wondered about the usefulness of a receive only but found this very in-depth discussion. Seems a 5 to 13 MHz unit was used by the French resistance.

https://www.qsl.net/i0jx/rbz.html

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 Post subject: Re: Navy RBZ Receiver
PostPosted: Dec Sun 08, 2019 6:45 am 
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Joined: Mar Sun 14, 2010 2:51 am
Posts: 427
Location: Newport, Oregon, 97365 U.S.A.
For front line troops, a receive - only unit is actually near worthless. Emerson called this the "Marine Raider receiver". I suppose there were plentiful unused
units available for the European resistance use.


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 Post subject: Re: Navy RBZ Receiver
PostPosted: Dec Sun 08, 2019 8:15 am 
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Joined: May Sun 13, 2007 5:22 am
Posts: 218
Location: United Kingdom
At the beginning of 1944 the OSS learned that Emerson had produced 12,000 of the RBZ. Of these 5,800 were available. By March of 1944 2,500 had been modified and shipped to Europe for SOE/OSS use.


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 Post subject: Re: Navy RBZ Receiver
PostPosted: Dec Sun 08, 2019 9:56 am 
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Joined: Mar Sun 14, 2010 2:51 am
Posts: 427
Location: Newport, Oregon, 97365 U.S.A.
Source?
BTW, i have never seen an actual photo or read any account of U.S. Marines using the thing. I suppose most, almost all, were surplused unused after the war.
Also, kind of interesting is that the "two" manuals are identical except for a front cover stamp with the new frequency range. I suppose repair of the 'Special'
was not actually considered likely or practical.
Disintegration of the headphone and power cords is a common problem with these sets.
FYI, for anyone doing mechanical work on the dial system, Mark Francis in one of his 'Mil Spec Radio Gear' books advises that the dial scale is radium
painted.


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 Post subject: Re: Navy RBZ Receiver
PostPosted: Dec Sun 08, 2019 2:53 pm 
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Joined: May Sun 13, 2007 5:22 am
Posts: 218
Location: United Kingdom
Source is declassified CIA document on the OSS era.
https://www.cia.gov/library/readingroom ... 0005-4.pdf

go down to where the page numbers start. It's on page 11.

Mine came with carrying case & headphones and works quite well.


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