Help Needed to Identify Connectors

[K4EET]

My deceased father (WA4TCS) had a U. S. Army Signal Corps ME-82/U Wattmeter (52 Ohms and 120 Watts for 50 MCS to 600 MCS) pictured below. I am having difficulty identifying the nomenclature of the input connector. The connector resembles an “overgrown” BNC Female. I have not exhaustively searched the far corners of the Internet but so far cannot find the nomenclature of this connector.

Does anyone know off the top of their head what the answer is? If you do, might you also know if there is a UHF or N adapter available? TIA!

73, Dave K4EET

 

[daugherh]

Looks like it may be this "Type C" connector. Type C RF Adapters

 

[prcguy]

Its a C connector, I have adapters to N and BNC.

 

[K4EET]

You two are awesome 🤩! Thanks!!! Dave

 

[WB5UOM]

I said 'c' before I saw replys, so I ought to get a participation ribbon

 

[K4EET]

I said 'c' before I saw replys, so I ought to get a participation ribbon

Since you said what you said and since you posted in this thread, you get a participation ribbon 🎀!

73 my friend, Dave K4EET

 

[AK9R]

I said 'c' before I saw replys, so I ought to get a participation ribbon

This is the best I can do:

 

[K4EET]

FWIW, I ended up ordering a C-Male to N-Female for $14.95 plus $6.95 shipping from

Dave's Hobby Shop by W5SWL​

Dave's Hobby Shop by W5SWL - W5SWL Electronics

A magical emporium for the more discerning and knowledgeable buyer - RF Connectors & Gadgets - Technical Parts - Products - Premium RF Connectors & Adapters - Hobby Electronics- Technical Books - Ham Radio to Microwave Products

w5swl.com

The reason that I did not order from Max-Gain Systems (MGS) of Post #2 above was because while the connector was $11.95 plus $3.96 shipping which was a better price, the connector was not available at the time:


The cost differential was $6 more from Dave’s Hobby Shop and MGS did not provide an expected ship date for the item. MGS does have good prices and I will add them to my list of vendors to potentially buy from for future hardware needs.

Thanks again to all who participated above. 😃

 

[robertwbob]

well dog gone it. was going to say type C. i used to have a meter for automotive use that used type C. back years ago was hard to locate ends pre internet years. even rs didnt show em

 

[K4EET]

well dog gone it. was going to say type C. i used to have a meter for automotive use that used type C. back years ago was hard to locate ends pre internet years. even rs didnt show em

We will include you in the recognition of what type of connector it is. According to tracking information, the connector should arrive sometime today. Then I can test the dummy load / wattmeter to see if it still meets specifications.

 

[robertwbob]

We will include you in the recognition of what type of connector it is. According to tracking information, the connector should arrive sometime today. Then I can test the dummy load / wattmeter to see if it still meets specifications.

Lets hope it does as expected

 

[K4EET]

Lets hope it does as expected

Got the connector today. I’m going to check it over sometime next week. If the unit fails on the wattmeter, hopefully the dummy load portion will be okay. If the whole thing is defective, I’ll have a large paperweight. 😂😂😂

 

[majoco]

Make sure you say "Bayonet C" as there is also "Screw C". Measure the DCresistance from outer to inner of the connector - should be 52ohms. At least you'll have a dummy load if its good. You'll need a source of RF to make the meter move, 50MHz to 600MHz, so it"s VHF.

 

[K4EET]

Make sure you say "Bayonet C" as there is also "Screw C"

I ordered a C-Male to N-Female and received a bayonet mount which was correct. In the online catalogs, I didn’t see any mention of a screw-type mount. Perhaps that is an older style?

 

[prcguy]

Make sure you say "Bayonet C" as there is also "Screw C"

"Type C" is very specific and identifies a bayonet type connector. Do you have any pictures of a threaded type C?

 

[robertwbob]

Got the connector today. I’m going to check it over sometime next week. If the unit fails on the wattmeter, hopefully the dummy load portion will be okay. If the whole thing is defective, I’ll have a large paperweight. 😂😂😂

I can relate.got several items that supposed to work but not when i got em handed to me

 

[MUTNAV]

Got the connector today. I’m going to check it over sometime next week. If the unit fails on the wattmeter, hopefully the dummy load portion will be okay. If the whole thing is defective, I’ll have a large paperweight. 😂😂😂

The meter movement itself would be worth something. Possibly more than the watt-meter.

Thanks
Joel

 

[K4EET]

The meter movement itself would be worth something. Possibly more than the watt-meter.

Thanks
Joel

Thanks for your input Joel. We will know soon enough if that little needle moves upon application of RF power in the operational range of frequencies. And the suspense is building…