There are bulkhead feedthroughs that fit a D shaped hole, and the SMA threads 
start on the outside, but you are looking for 16 mm of thread outside the box.  
That’s a lot.

 

This for example only has 14 mm of thread, and only 6 mm of that is the SMA 
thread.

 

http://www.l-com.com/multimedia/eng_drawings/BA21.pdf

 

It doesn’t sound like the mating connector needs anything close to 16 mm of 
thread.  Why do you need so much?  Or when you said the plate is nearly 4 mm 
thick, did you mean 14 mm?  Maybe that’s it. 4 mm isn’t really very thick, like 
5/32 inch.  Not enough to consider counterboring.

 

 

From: AF <[email protected]> On Behalf Of Adam Moffett
Sent: Friday, April 12, 2019 2:44 PM
To: [email protected]
Subject: Re: [AFMUG] Extra Long SMA to U.FL Pigtails

 

I hear it's not a big deal for those factory complexes in the People's Republic 
to crank out custom parts.  Like the plan building a radio needs a special SMA 
connector, so they just call the plant down the road that makes those and tell 
them and they'll make a couple thousand of them.  
....I'm saying just because it exists doesn't mean you or I can buy it.  

I wonder if there's an easy to way countersink the plate.  It's easy if you 
have a milling machine of course, but I wonder if there's some kind of drill 
bit that would make a countersink just big enough for the flange on your 
bulkhead connector.  It would only have to be 3/8's wide or so.



On 4/12/2019 1:50 PM, [email protected] 
<mailto:[email protected]>  wrote:

Yes, the plate is nearly 4mm thick. I've seen these on radios before so I know 
they exist but I just

can't seem to find them.

 

On Fri, Apr 12, 2019 at 1:48 PM Ken Hohhof <[email protected] 
<mailto:[email protected]> > wrote:

The screw terminal you refer to is the threads on the SMA bulkhead connector?  
I take it you’re mounting it on a thick plate of some kind?  Wow, that’s a lot 
of thread, good luck.

 

From: AF <[email protected] <mailto:[email protected]> > On Behalf 
Of [email protected] <mailto:[email protected]> 
Sent: Friday, April 12, 2019 12:22 PM
To: AnimalFarm Microwave Users Group <[email protected] <mailto:[email protected]> >
Subject: [AFMUG] Extra Long SMA to U.FL Pigtails

 

I'm looking for an SMA to U.FL pigtail that has a longer screw terminal. Most 
I've found

have ~14.5mm threads exposed, I'm looking for something closer to 20mm. 

 

I've search online but can't seem to find anything. Anyone know of a source for 
this?

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