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Unusual BECKMAN 51J-4!!




 
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Author Topic: Unusual BECKMAN 51J-4!!  (Read 839 times)
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WBear2GCR
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« on: March 12, 2019, 06:47:30 PM »


This is a very unusual 51J-4!
Apparently made for or re-badged by Beckman, it sports a light grey front panel!
The listing says it was restored by Miltronix... so it's super clean to look at, would have
liked to have seen a "before" picture too.

It is up on epay, but I thought it was of general interest to all.
(link is for reference only) https://www.ebay.com/itm/Collins-51J-4-Serviced-and-Excellent-Condition-One-of-a-Kind-by-Beckman-LABS/254154810874?hash=item3b2ccea5fa:g:AM8AAOSwzkRcgX1D

Picture submitted for your approval! Cheesy


* BECKMAN 51J-4.jpg (273.06 KB, 1600x1200 - viewed 130 times.)
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_-_- bear WB2GCR                   http://www.bearlabs.com
w8khk
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This ham got his ticket the old fashioned way.


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« Reply #1 on: March 12, 2019, 06:58:31 PM »

The 51J4 I have was acquired via AF MARS, and it has the same Beckman logo.  I am not sure how rare that one is.  I assume Beckman was licensed by Collins manufacturing under contract to provide the receiver to the military.
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Rick / W8KHK  ex WB2HKX, WB4GNR
WBear2GCR
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« Reply #2 on: March 12, 2019, 07:22:59 PM »



I'm no expert or collector, but I've not seen a pic of that before, iirc!

Is yours grey too? Got pix?
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_-_- bear WB2GCR                   http://www.bearlabs.com
w8khk
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This ham got his ticket the old fashioned way.


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« Reply #3 on: March 12, 2019, 07:53:30 PM »

Not very good photos, and the mic is probably hiding what you want to see.

this was taken during the rally in feb.

I will try to remember to post a close-up soon.

Yes, the panel is gray, original paint.


* 20190202_214022.jpg (2738.83 KB, 3264x2448 - viewed 117 times.)

* 51j4.JPG (87.34 KB, 892x553 - viewed 126 times.)
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Rick / W8KHK  ex WB2HKX, WB4GNR
WBear2GCR
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Brrrr- it's cold in the shack! Fire up the BIG RIG


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« Reply #4 on: March 12, 2019, 08:20:26 PM »


Wow... who knew?

So the next question is there any sign of Collins inside?
The PTO label? The cans? Etc...
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_-_- bear WB2GCR                   http://www.bearlabs.com
w8khk
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« Reply #5 on: March 12, 2019, 08:29:09 PM »

I will look and get back to you with more photos....
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Rick / W8KHK  ex WB2HKX, WB4GNR
K4NYW
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« Reply #6 on: March 12, 2019, 08:55:57 PM »

Made as usual by Collins. I don't believe any one else made 51J-3 or 51J-4.
Beckman merely placed an order with Collins for some with a custom front panel.

You may also see light gray front panel 51J-4 which were Collins test/lab units.

How about a blue 51J-3?
http://www.navy-radio.com/rcvrs/r388/r645-gpq3-13.jpg
R-645/GPQ-3 - Collins made for a Raytheon USAF contract.

R-388, 51J-3, 51J-4 production info
http://www.navy-radio.com/rcvrs/r388.htm

cheers,
Nick K4NYW
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Fred k2dx
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« Reply #7 on: March 20, 2019, 01:34:07 PM »

My 51-J4 is gray too. The story came with it also that the gray faced J4s were made for Collins labs use in house.    SN 7676, on the Collins tag.
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