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Author Topic: Big Bird water cooled dummy load connector change?  (Read 1258 times)
2E0ILY
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Posts: 131




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« on: October 20, 2012, 10:33:41 AM »

I have a big Bird 8738 water cooled dummy load I want to use with RG-213 or similar co-ax. The "connector" on the load is a flange type of about 3 and 1/8 inch OD on the outer of the connection. I have a half decent machine shop at my disposal, any ideas for putting something like a 7/16 inch RF connector on it? I only need it up to say 30MHz, nothing very high frequency. Thanks. Photo at http://www.gatesgarth.com/load.jpg
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Best regards, Chris Wilson.
W9GB
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Posts: 2597




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« Reply #1 on: October 20, 2012, 12:12:26 PM »

Quote from: 2E0ILY
I have a big Bird 8738 water cooled dummy load I want to use with RG-213 or similar co-ax. The "connector" on the load is a flange type of about 3 and 1/8 inch OD on the outer of the connection.
Here is the Bird manual for your Bird 8738. Turn to page 8 for proper connections.
http://www.bird-technologies.com/~/m...920-8730S.ashx

Electronics Research, Inc.
Chandler, IN (near Evansville, IN. USA)

3-1/8 inch broadcast hard (rigid) line
http://www.eriinc.com/Catalog/Transm...ne/STD350.aspx

Adapters / Reducers are mfg. for the commercial broadcast industry.
Since 3-1/8 rigid line is normally pressurized with Nitrogen, you will find all commercial
connectors are pressure rated.
http://www.eriinc.com/Catalog/Transm...pter%3EReducer

Reducer from 3-1/8 to 1-5/8
http://www.eriinc.com/Catalog/Transm...LA350-150.aspx

The coaxial type N or 7/16 DIN are most common to find.
1-5/8 to N connector (female)
http://www.eriinc.com/Catalog/Transm...RLA150-NF.aspx
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