Troubleshooting mylack of distance, receivng and transmitting.

A antenna tuner will do the same but like the coax the problem is still there ......

As for RF grounds my Colrolla has problems on 75 meters ...... but I still don't cut coax ....

 

Got one. A little large for the truck but I have used it there. It's just something else to worry about finding a place for or knocking it off in the floor, so I don't like to use it in the truck. The coax length fix makes the radio happy and is easier.

 

Another CB myth cutting coax fixes SWR ......

 

Cutting coax only tricks the radio into thinking its fixed

 

I know that, and have stated it many times. But when you are slip seating and need a radio, you don't have time to "fix" it. You do whatever is easiest to get a low SWR reading so you don't overheat the finals. And changing the coax length works, despite what others here seem to deny.

 

It works to make your meter show a nice reading, sure. It does not work to correct your SWR problem, however, which is the whole point.

 

No, the whole point when you are only going to be in a particular truck for a day or two is just get the radio where you can use it the easiest, fastest way possible. Thus the "nice reading" is a good thing because you won't be causing heat to the finals. DISCLAIMER: I AM NOT ADVOCATING TUNING AN ANTENNA BY CUTTING OR LENGTHENING THE COAX. BUT IT WILL CHANGE THE SWR WHEN YOU NEED IT LOWER SO YOU CAN SAFELY USE YOUR RADIO. (did yelling boldly help?????

 

NO it did not

 

Tell ya what. For those who believe the nonsense about coax length, try an experiment. Get hold of a 10 watt, 50 ohm resistor. Solder the leads across a PL-259 connector. Measure the SWR (or swr'sssssssssssssss). It will be perfect. You won't have much of a signal, but them swr'zzzzzzzzzzz will be flat! OH! It's called a DUMMY LOAD, btw!
Do you know that there OTHER transmission lines BESIDES coax?

IF the almight coax length theory were true, then it would be true for ALL radio services. Using that same "theory" so popular in CB, many hams, for example operate on the 75-80 meter band in a mobile. Now the popular "cb bible" theory is that mystical 18 feet, or 9 feet, or multiples of 3 (468/freq in mhz/2). This is commonly used to figure the length of a dipole. In a mobile the vehicle is the "other half" of the antenna, so the average length is not actually 18 feet, but around 17 point something. OK, now, that guy operating on 3.9 MHZ (75 meters)............ well, that comes out to about 60 feet IF he is using coax and not something such as ladder line, and IF he is worried about a "certain" coax length. Remember; we are talking about a MOBILE here, so stop and think a minute. WHERE is he going to PUT 60 feet of coax in a small S-10 pickup, for example? OH,I forgot! Yer supposed to coil it and keep it 60 feet! HORSE HOCKEY!!!!!!! Truth is, ham and military operators operate around the world and they use one formula to figure their coax length: That length that is directly proportional to that of the distance from the antenna to radio!!!! I for example, talk worldwide from an S-10 truck. My "coax" is about 7 feet long. Why? Because THAT is what it took to get from the radio to the antenna. And I talk on frequencies from 3.5 thru 28 MHZ using the same antenna and never give coax length a single thought.

Coax length is a myth. It was BORN on CB, it LIVES on CB, and continues to exist because of misinformation and wrong ideas. IF you WANT to use coax length to get them "swr'zzzzzzzzzzz" down, go ahead; it won't hurt much. But think of the "dummy load" theory. If you want the BEST out of your system, tune the ANTENNA, NOT the coax!!!!!!!!!!! It is the antenna that radiates the signal, NOT the coax!

GF

 

Why keep worrying about your coax? Just use Antenna Lube. It will give you a very good match of 1:3 or less on 10, 11, and 12 meters. Just use it to grease you antenna twice a year. And your signal will really slide off your antenna and go for miles, and miles. You'll be able to talk to your buddy over 150 miles away just using a stock radio. More if you're running a BIG radio. And with a 500 watt amp. Well over 1,500 miles. You can forget about coax matching. You can really enjoy your radio to the Max! It's well worth the price.