What do you guys terminate a collinear DIY antenna with?


#1

Hi all

I built a collinear antenna and it works great but I have used F type connectors and they keep falling off the cable as it’s not tight enough. I’d like to use N Type connectors as they seem the more solid alternative but these look to be even bigger and I’m not sure SMA will take the weight/movement whilst outside.

What is the general consensus for terminating the end of the array?

Also I’ve been looking at changing to a better cable quality now that I want the antenna on the roof as the cable run will be a good 10m-ish and found LMR400 seems to be recommended, can this be used for the entire array and cabling run as I may buy a reel and do the whole lot again.


#2

You are probably using the wrong cable. RG59 is thinner than RG6, so the connector is different.
sewelldirect.com/learning-center/rg59-or-rg6


#3

So would you recommend going with RG6 rather than LMR400? The price difference is substantial!


#4

The point is that you need F connectors that are designed for the cable diameter you’re using.

Either F or N should be fine if they’re properly installed. You don’t really want to be putting mechanical stress on a connector regardless of what it is…

Lower loss cable is generally a good thing (look at the specs for loss at 1GHz, and beware that it’s sometimes quoted per 100ft and sometimes per 100m) but whether it makes a big difference depends on the length of the cable run.


#5

I use Crimp type F connectors. A lot more secure.


#6

twist the shielding braid together to form a tail. then push that tale backwards up the cable then attach the f-connector.

This will increase the diameter of the cable and the f connector may stay on. Its a abodge but it does work.


#7

AFAIK there is no F connector for the LMR400, only N:
awcwire.com/productspec.aspx … connectors