[MRCA] "N" bulkhead punch?

[W2HX]

Thanks to EVERYONE who offered suggestions on this.  And thanks to Mike for the offer of a loan! Since it has come to my attention that there are D and double D  (there is a joke in their somewhere) I had better wait until the connectors arrive to make sure which I have and what the exact dimensions are of the flats as there seem to be more than one possibility.

73 Eugene W2HX


-----Original Message-----
From: Mike Feher [mailto:n4fs at eozinc.com] 
Sent: Saturday, December 20, 2014 11:16 AM
To: mstangelo at comcast.net; W2HX; mrca at mailman.qth.net
Subject: RE: [MRCA] "N" bulkhead punch?

Wow, I cannot believe the price of that. Gene, I know I have some downstairs. I will not have a chance this weekend, but, if you can wait a few days I will dig one out and mail it to you as a loan. 73 - Mike 

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 

-----Original Message-----
From: MRCA [mailto:mrca-bounces at mailman.qth.net] On Behalf Of mstangelo at comcast.net
Sent: Saturday, December 20, 2014 11:00 AM
To: W2HX; mrca at mailman.qth.net
Subject: Re: [MRCA] "N" bulkhead punch?

Eugene,

The N type connectors normally require a 5/8 inch round hole.

I don't know the dimensions of your flat side but you should search for a D shaped knockout. Here is an example:

<http://www.grainger.com/product/GREENLEE-Punch-4JA59?s_pp=false&picUrl=//st
atic.grainger.com/rp/s/is/image/Grainger/4JA59_AS01?$smthumb$>

Keep in mind that non round knockout cost a lot more than the standard round punches.

If you connector has four mounting holes you could use a round punch and align with he mounting holes.

Mike N2MS


----- Original Message -----
From: W2HX <w2hx at w2hx.com>
To: mrca at mailman.qth.net
Sent: Fri, 19 Dec 2014 23:46:43 -0000 (UTC)
Subject: [MRCA] "N" bulkhead punch?

Hi friends,

I am building an outdoor antenna control enclosure and I've decided to use "N" bulkhead connectors to bring RF in and out of the enclosure (no need to debate the benefits/disadvantages of "N" vs "SO-239" connectors)

Most of these bulkhead connectors have a "flat" side. This flat side prevents the otherwise round connector from twisting when tightening on a cable.  I don't have any special tools to make this type of a hole in my enclosure. I am guessing that a metal punch (like a greelee) should be used to make such a hole.  Does anyone know what kind/model of punch I should look out for? What size?

Any info appreciated.

73 Eugene W2HX


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