Compression Conectors

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TheSigma
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Compression Conectors

Post by TheSigma »

anybody using these? I use ICM ( http://www.icmcorp.net ) type BNC compression connectors all the time, they seem to be reliable, and are way easier to install than three piece BNC's. Seems most "PRO" video facilities still use the Kings three piece crimp BNC's. Any particular reason? They already have tons in stock? They want to use what they know will work/if it ain't broke don't fix it? Or is there some known fatal flaw? I have used these with much success http://www.icmcorp.net/pdf/allspec-FS59BNCU.pdf, as well as the comparable RG-6 version. Don't have the crimper for the newer Double Bubble series, so never tried those.

Anyone have some thoughts on these?

(edited to correct typo)
Last edited by TheSigma on Mon Jan 10, 2011 8:48 am, edited 1 time in total.

eadler
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Re: Compression Conectors

Post by eadler »

I already have all the tools for Kings 3-piece BNCs and they work well (using mini- 'RG59' cable). As for standard RG59/RG6, next time I need to make a bunch of BNCs or F-s, I'll be buying the ICM crimp tools and connectors; the local electronics shop stocks them.
Eric "tonsofpcs" Adler
http://www.videoproductionsupport.com/
Twitter: @eric_adler

TheSigma
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Re: Compression Conectors

Post by TheSigma »

Will you be using the ones like I linked to or the newer DB series? they take different tools and I have not tried the newer ones. I have always had good luck with them and have been using them for over 3 years now. I have had problems with cheaper compression connectors, so definitely buy the high quality ones, I use the ICM connectors almost exclusively now, though in a pinch I can now get Thomas and Betts or Ideal at the Lowes down the street, I almost crapped when I saw they actually had BNC's in stock (though not cheap, If you need them now you need them NOW).

At my church they were always pulling the BNC's off the cable (3 piece style) Not sure if someone used the wrong crimp die or what (I did not install them) Replaced with ICM compression and no more problems. Did have problems with the cheapies(intermittent connections, also more difficult to insert the cable). Anyway, I've been loving them.

Thanks,
NS

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PID_Stop
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Re: Compression Conectors

Post by PID_Stop »

TheSigma wrote:Seems most "PRO" video facilities still use the Kings three piece crimp BNC's. Any particular reason?
We get the Kings connectors for $1.25 apiece; the best price I see on compression connectors is over $2. There isn't a lot of reason for us to spend the money to retool for a more expensive connector, particularly when we have been using various Kings plugs successfully for the last 20+ years.

We tooled up for Kings connectors in the mid-80s, about two years after we built our present facility: the several thousand Cambridge spin-on connectors we originally installed began to fail. The spring contacts to the center wire got flaky, and we wound up spending most of our time chasing intermittent level problems. That's also why I probably won't be looking to adopt a BNC connector that doesn't have a crimped center pin, especially for HD-SDI applications.

-- Jeff

NECRAT
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Re: Compression Conectors

Post by NECRAT »

We've been using the Trompeter ones, with really good sucsess. Once in a blue moon, the cables which get heavy plug/unplug usage, the center piece will fall out, but otherwise, they've been great.
Mike Fitzpatrick
Broadcast Engineer/Tower Photographer
Boston area.
https://www.necrat.us, https://www.scan-ne.net/

"If you don’t think you’re good, nobody else will" - Tom Laun (RIP)."

TheSigma
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Re: Compression Conectors

Post by TheSigma »

PID_Stop wrote: The spring contacts to the center wire got flaky, and we wound up spending most of our time chasing intermittent level problems. That's also why I probably won't be looking to adopt a BNC connector that doesn't have a crimped center pin, especially for HD-SDI applications.

-- Jeff
That was my main concern that over time the center pin would become intermitent, however it does seem tat the design does crimp (or rather Compress) onto the center pin. it is like a + is cut into the center pin and by compressing into a gradually reduced diameter cone, the four fingers are pressed into contact with the center conductor. not sure if this is as good as a true crimp, but certainly better than spring contacts. I am of course talking specifically about the design of the ICM connectors. there are many similar designs, and some that are nowhere close.

I don't blame you for not wanting to switch to a more expensive connector. I have been lucky to get some large lots of new connectors on ebay for well under $2.00 a piece, sometimes even under $1.00 ea.

Necrat: I have not seen the trompeter ones (at least I don't think I have), any links?
Last edited by NECRAT on Tue Jan 11, 2011 8:33 pm, edited 1 time in total.
Reason: fixed quoted text formatting

NECRAT
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Re: Compression Conectors

Post by NECRAT »

These are what we're using.

http://www.ramtronix.com/BNC%20Cable%20 ... MPETER.htm

UPL2000 series.

2000-D4 for 1694A.
Mike Fitzpatrick
Broadcast Engineer/Tower Photographer
Boston area.
https://www.necrat.us, https://www.scan-ne.net/

"If you don’t think you’re good, nobody else will" - Tom Laun (RIP)."

TheSigma
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Re: Compression Conectors

Post by TheSigma »

Thanks.

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