Swr vs ohms

[The DB]

XXX

If one length of coax works better with an antenna than another you have a problem with your antenna system that needs to be fixed, period, end of story.

Coax length has been discussed at length in the past on these forums, and has been thoroughly debunked. The only radio service that coax length even seems to come into play is CB, and the only way people on the CB band can get away with such botch jobs like specific coax length to hide such problems is it is a single very narrow band in the grand scheme of things. Even still, the problem still exists, and can still haunt you even if you hid it with such trickery. The only way to ensure the problem is gone is to trace it out and fix it properly. Or you can take your chances and hope you get lucky.


The DB

 

[sp5it]

Coax length is very important IMO. Can't be shorter than distance between radio and antenna
Mike

 

[M0GVZ]

so ch 19 or 27.185 mhz is the center of the cb universe.. that is as we all know approx. 36.2 feet without splitting rfch ...your 12 foot preference is a multiple of that .. most antennas tend to stay with 18 foot leads as we all also know .. any multiple 36 feet is better than hacking of a willie nille hunk of coax to tailor the fit to the given installation is not as tidy as a cut to fit pieces but sho nuff adjusts a lot better ..I myself prefer to deal in .5 wave lengths and fine tune with 1- 3 foot jumpers as well as stinger length.. trial and error. the swr's are good. finals tend to last along time and installs talk very well ..JMHO .. XXX

My antenna covers 14MHz, 18MHz, 21MHz, 24MHz, 28MHz and 50MHz. What length do I cut my coax to?

If altering the length of your coax alters the SWR you need to look at your RF grounding because your antenna system is using the coax to make up for a poor one.

 

[222DBFL]

XXX. Read my post again, it's says a 12 inch jumper, not 12 foot, and if you believe in that 18ft coax BS, then you need to study up some man!!

 

[222DBFL]

And also note I said to connect directly to the antenna feedpoint if possible or use a 12 inch or shorter jumper for tuning of an antenna. So again, if you believe that the 36ft myth is true, then you're the one that is mistaken. Not me! But I forgot, 11 meters or the CB band doesn't count for antenna tuning as every other frequency or band does. Man, how many times do we have to go over this BS!! And no I am not a ham radio operator either. I just have done my homework and also got my learn on about how to tune an antenna. Maybe you need to do the same before you start flaming people!! Sorry gents for being so harsh, but my words and what I posted were taken WAY out of context. If you can tell the difference between 12" and 12' or should I say 12 inches or 12 feet, then something is wrong!! And again, I am just a CB operator and know better!!

 

[phantom309]

For the record guys, this is my install, I am not allowed to change the coax, I am not allowed to modify the truck in anyway, nor can I disassemble the mirror to tune the antenna as close as possible.

I am stuck with what I have.

Considering the lack of counterpoise in the plastic mirror I am quite happy with the antennas performce. Barefoot radio I can comfortably talk 25 miles give or take, given the other operator has a radio that can talk and hear the same distance. I the radio I use is a fairly stock galaxy 99v2, completely barefoot.

Considering my limitations I am quite happy with the results.

 

[357]

sorry to highjack, I'll leave a link for marconi.
http://www.worldwidedx.com/threads/i-think-i-cooked-my-antenna.204407/page-4#post-564558

 

[XXX]

XXX

If one length of coax works better with an antenna than another you have a problem with your antenna system that needs to be fixed, period, end of story.

Coax length has been discussed at length in the past on these forums, and has been thoroughly debunked. The only radio service that coax length even seems to come into play is CB, and the only way people on the CB band can get away with such botch jobs like specific coax length to hide such problems is it is a single very narrow band in the grand scheme of things. Even still, the problem still exists, and can still haunt you even if you hid it with such trickery. The only way to ensure the problem is gone is to trace it out and fix it properly. Or you can take your chances and hope you get lucky.


The DB

I rather be lucky than good any day !!! XXX

XXX

If one length of coax works better with an antenna than another you have a problem with your antenna system that needs to be fixed, period, end of story.

Coax length has been discussed at length in the past on these forums, and has been thoroughly debunked. The only radio service that coax length even seems to come into play is CB, and the only way people on the CB band can get away with such botch jobs like specific coax length to hide such problems is it is a single very narrow band in the grand scheme of things. Even still, the problem still exists, and can still haunt you even if you hid it with such trickery. The only way to ensure the problem is gone is to trace it out and fix it properly. Or you can take your chances and hope you get lucky.


The DB

 

[Road Squawker]

I rather be lucky than good... XXX

Run what Ya brung