That will do nothing. All that cal button does is calibrate the meter to see what the swr IS. You have to tune the antenna to make any changes to the swr. Raising or lowering the adjustable tip or whip depending on the type of antenna you have. It has nothing to do with calibrating the radio.
Once the antenna is tuned to that vehicle and location on that vehicle it doesn't matter what radio you put in.
Hope that explanation helps.
cobra ltd29bt/wilson fgt-4
Discussion in 'CB Radio Forum' started by deerslayer1143, Mar 15, 2011.
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On a similair note to this thread I DID get an external swr meter and like alot of you said those internal ones are not that accurate.
After retuning with my new external meter I now have a reading of 1.9:1 on the outer bands and 1.7:1 in the middle.
Not as good as my 1.1 across the board! But good enough for me given the location and mounting I am using on this fiberglass truck and now at least I know the true reading!
Thanks for the advice guys!!! -
thanks for the advice. i did that calibration, and my meeter reads just under 2, the manual says more than three is no good. i know my antennas suck so im guessing thats one of the reasons. also my antennas are bolted to my tool box in the bed, i had them bolted to my light bar but when plowing they hit everything. so my next option im looking into is: new antenna, steel whip. and new coax. the old antennas will be hooked up to a scanner for the fire channel in my home town.
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Is the scanner multi-band? Or 27MHz multi-channel? Those antennae may not be the best for a scanner.
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Im not sure what scanner im going to get, there a few other thing my truck needs befor i can dump big money on a scanner. but its only gunna monotor one town at a time nothing to special, my phone has an app for scanning towns in NH so if i wanna see whats goin on in the state i can just do that. im entering a program at a local collage where id hope to live at the station while going to school, i just applied and im waiting for a reply for an oralboard interview. but the scanner is not gunna amazing. i think the white crappy whips will do, but the cb needs a steel antenna. any sugestions for steel set up to match that raido for around 100 bucks with some coax
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Wilson and K40 antennas have sold out long ago. Wilson sold out to the barjan company aka barjunk dist.Thats why you see the brand name on all kinds of truck stop junk. You might get a good antenna and the next guy junk. I used to love wilson back in day. Now you need to run the other way if you see it. My mfj 259B tells no lies when it comes to antennas.
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4x4, your town's Fire Dept. works on 155.8875, and it's "narrow band". For now it's analog, so when you buy a scanner, either opt for one that will let you select Narrow Bandwidth, or just figure on having to turn up the volume a bit to hear the signals.
And if the old CB antenna you're going to use is steel and *does not* have a base load coil, you can lop it off at about 18 inches long and be plenty close enough for receiving. If it's a wirewound fiberglass antenna, where to cut it will depend upon where the loading is distributed along its length.
Fortunately, receiving is nowhere as critical as transmitting when it comes to VHF antennas, so you can pretty safely "cut-and-try". Overall you're going to want the effective electrical length of the antenna to be about 1/6 what it is for CB.
Hope that helps,
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ok so ur saying get an antenna with a coil already in it like a wilson huh, thats what i was thinking. and i was planning on geting new coax for bolth radios. running one to just one whip cause the spltters i herd dont work for ####, and running the steel one on its seprate line. i know the towns frequency and they switch to the local fireground channel when on a fire ground. so im gunna run new coax to the fiberglass wound antenna for the scanner, and get a scanner with narrow band and keep the old cb that i have and run a steel antenna with an onboard coil already in it, good choice?
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