Coax connectors

That may be but those ring compression fittings..... They work real nice. I've sneezed and had crimp-ons become crimp-offs
But those ring compression jobs.. HOLD LIKE CRAZY.

The simplest solution would be to use a push-on F adapter:

The type in the photo has a circular ring around the end to maintain tension on the connection. This would be adequate for temporary connections. Stick with the thread on type for permanent connections.

The adapters that SCVJeff referenced do have a 50 ohm BNC connector.

The 50 ohm connectors will most likely work okay. If not either round up some 75 ohm ones or go with the F push-on.

If the station that Jeff works at is similar to the one that I worked at, virtually all the BNC connectors were 50 ohm prior to the digital transition. With the much higher frequencies involved with HD video, a 75 ohm version of the BNC became available. Equipment vendors gave dire warnings about changing out connectors if used in the digital path. We left some 50 ohm connections and they seemed to work fine.

The push-ons are what I have been using and they just lose their tightness and cause more problems than just taking the time to use the screw-on connectors. The others displayed look like they are what I'm going to go to at this time. Thanks.

wa8yxm wrote:
That may be but those ring compression fittings..... They work real nice. I've sneezed and had crimp-ons become crimp-offs
But those ring compression jobs.. HOLD LIKE CRAZY.

Then you simply had the wrong tool

Tom_M wrote:
The simplest solution would be to use a push-on F adapter:

The type in the photo has a circular ring around the end to maintain tension on the connection. This would be adequate for temporary connections. Stick with the thread on type for permanent connections.

The adapters that SCVJeff referenced do have a 50 ohm BNC connector.

The 50 ohm connectors will most likely work okay. If not either round up some 75 ohm ones or go with the F push-on.

If the station that Jeff works at is similar to the one that I worked at, virtually all the BNC connectors were 50 ohm prior to the digital transition. With the much higher frequencies involved with HD video, a 75 ohm version of the BNC became available. Equipment vendors gave dire warnings about changing out connectors if used in the digital path. We left some 50 ohm connections and they seemed to work fine.

yep, thats true. But when shoving 1.5ghz theough extended lengths of cable, any bump along the way just means the cable needs to be that much shorter.

And in the new world, 8281just doesn't work at all.. :(

Jeff, what was wrong.. 1.06 to one is a darn good match.

without going back I thought I posted two paragraphs, One in regard to 50 ohm connectors (Which I use a bunch of) and one for 75 (I do not currently use BNC for 75 but I am sure going to start soon).

When I say they are harder to install.. I am talking about putting the connector on the end of the cable, NOTHING is easier than a F connector

But that said I have done PL-259 and N connectors, Worked with BNC but never put one on from scratch.

Sorry to the OP - a bit of a side track

Good to see other folks lived through TV's digital evolution
Composite analog aka NTSC/PAL/SECAM - life was good and easy until you got to the 25Hz offset in the 50Hz world of PAL - NTSC aka Never Twice the Same color was easy
Then came CAV aka RGB YUV Y,B-Y,R-Y - component is good but separate wires for each part NOT good
4FSC digital - what a joke aka Laser disks, all the same issues we had with analog composite
Parallel component digital a huge expensive mess must have dumped $1m into R&D on that looser
Serial component digital (270mb SD) at the beginning it was a MESS - remember the junk serializers
1.5gb is child's play today
3.0gb and beyond what's in the future?
Lived that life for 40 years glad not to be part of it anymore

Anyone else have a 4K TV yet?

Right now only the production houses run 3G, and not many. 4K is the new "thing" , but according to the CTO at Sony, they are focused at 8K and beyhond (details under NDA). The problem right now is how to transmit it? That's probably where ATSC2 comes in, or it's all Blueray, cable or satellite. 8K is to the point that they say they can do true 3D, no glasses, etc. The math involved in the shooting process, special lensing, and encoders I can't even understand yet are giving me a migraine. I'm glad I'm nearing the end if this run...

John: 50 ohm is a complete no-no when 1.5gb, It's gotta be F L A T.. No bumps at all. Don't forget this is all bits, and this ultra-wide carrier needs to be decoded in its entirety. Even a pinch in the coax from stepping on it will ruin the picture. You now have to be petty careful even lacing bundles with zip-ties to prevent bumps (dents), and camera cables are now fiber optic. That 1.06 VSWR spec is likely an F0 carrier measurement. I don't use PL-259 anymore, and only mil spec grade solder on N connectors. But I have crimped thousands and thousands of BNC onto 75ohm coax, and (knock on wood), have never had one fail.

GENE: Are you in Quartzsite this year? I found a BNC-F combo in my stock for you just for putting up with our silliness here :) I'll toss it in the coach if you can wait till then.

When the centeralized dispatch for the Police Department I worked for the LAN in the office was what is sometimes called a cheap-net, all Coax cable with BNC connectors.. We had several crip-on Connectors simply fall off the cable.

F-Connectors do that too.

But thanks to this thread I am seriously considering switching the connectors (Currently F) on ONE of my cables to BNC, I have 3 TV's in this coach, one is more or less portable (The others are bolted to something, this one is not) and the connection to it is flakey,, not sure which of 3 connections is the problem child but I can fix that easily enough when I upgrade the cable ends.

(In the bedroom I have a computer.. If I want to watch TV and Compute in the old days I had a single TV/Monitor with Pic in Pic, but when it died the new one can be a monitor or a tv but never both at once, so I put in a 2nd TV, when traveling this 2nd one goes in the laundry basket with the dirty cloths (A nice soft cushion) and I can also take it outside to use there, or put it in other palces as needed. But the connecitons are flakey I keep having to "Bump" the coax, Fairly sure it is a bad crimp on but have yet to get a round tuit needed to fix it.

This thread has gone a bit sideways. Since the OP does not want a push-on F connector about the only option is BNC connectors plus F-to-BNC adapters. It's best to keep the number of connections to a minimum. Lately the most common F connector has become the compression type. You can also get BNC compression fittings that use the same installation tool. Connectors are available for both RG-6 and RG-59 cable. RG-6 is the most common of the two. Connectors and tools are available at home-improvement stores and Radio Shack.

F compression fitting:


BNC compression fitting:



Typical installation tool: