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If you are happy with the performance of that antenna then good! By all means, jeep and use it. But please don't think that it " PERFORMS GREAT on 40 mtrs ", that won't/can't. 'Great' is a matter of personal experience, I guess, so knock your self out with it. - 'Doc

You know, it's precisely because it's a 1/4 wave groundplane with no matching system (other than the positioning of those radial) that I find a 3 or 4 Mhz usable bandwidth as exceptional. The pictured graph of those SWR sweeps is also confusing (intentionally I think). Either information was...

" Is it common to have a CB antenna work well between 26.000.0 to 29.4900.0" No it isn't. The key work in that question is 'well'. You can certainly make one antenna -work- betweren those two frequencies, but it will not work -well-. And then that depends on how you define 'well' and how you...

Just for grins... The local police department switched over to the Moto Turbo system about a year and a half ago. Had an unbelievable amount of problems in doing so, couldn't hear the dispatcher from two blocks away (three repeaters too). After about two months the system was usable, still...

Crosley, Right general idea but a few mistakes. Any equipment can be used on the amateur bands as long as it meets Part-97 criteria/standards. It does not have to be disabled for other services (the one it came from), you just can't use it there without the proper licensing. If something is...

No, they are not 'authorized' for your use with a radio that's not certified for Part-90 service, and that ham radio isn't certified. (You can do all the listening you want though, just leave out the CTCSS.) The Sheriff can't authorize that radio's use on pub/serv frequencies. He can...

Can it be done? Sure. But the 'catch' is that it isn't going to be very practical/cheap at all. Changing it's usable frequency range is one thing, adding AM mode is definitely something else! Oh well... - 'Doc

This is just for grins... LMR-400 is good coax for VHF/UHF stuff. It has nice characteristics that are suitable for that frequency range. For lower frequencies there's no particular benefit, those characteristics do not carry over for other frequencies. Sure, there may be some benefit at...

If it's strictly an "either/or" thingy, then I'm not sure it would make any significant difference. If it's a matter of "what else can I do?", then I'd recommend new cable. So which would seem most likely to you?? - 'Doc

Sounds about average... - 'Doc

"I'm on 10 meters a bit, and although every contact I have ever made I mostly get the 59 report, but my swr is around 2.2.1. on AM I'm no higher than 1.3.1,..." Tell me how you mean that about the SWR. Is the difference between bands, or between modes? - 'Doc

A simple way to do that is by using a DPDT (double pole, double throw) switch. That can do the 'exchanging' of two antennas. The problem with a simple switch like that is that it would very seldom be of the right impedance. That isn't all that important, but it is important. Another thing...

If a signal is limited by the horizon, no 'bend' to is as VHF/UHF, then those calculators stand a chance. If there's any 'bend'/refraction to a signal, as with HF, those calculators are at -best- only a guess for 'line of sight' type stuff. That's just not very realistic/practical for HF...

Two things about that example. The equation only gives the distance to the horizon, it doesn't account for any 'bending' of the signal which is definitely something to consider with HF. The other thing is that for an antenna to be able to receive a signal it's radiation pattern must -over lap-...

A short 'fat' coil is more efficient than a tall 'skinny' one. Carry that tall/skinny to the extreme and you have a helically wound antenna. Those types of antennas are less efficient (Francis, for example?). Howz that for confusing... but still true. - 'Doc

Guess they lost interest...

A correct answer is that if the antenna is long enough then no coil is needed at all. That's when the antenna is most efficient. Coils, or actually the inductive reactance furnished by a coil allows an antenna to be shortened. That's because that straight old whip has enough inductive...

Actually, those 'broad strokes' aren't quite broad enough, double them and it's almost approaching adequate. Amplifiers have nothing to do with modulation percentage, the transmitter does that part. The amplifier only 'amplifies' what it's fed. The output of a properly fed amplifier should...

Since there's a significant difference with the trunk open/closed, then I would suspect that the problem is with the antenna's 'stud' mount and/or the trunk lid's bonding with the rest of the car. Is that stud mount assembled correctly? - 'Doc Anything else you forgot to mention?

That 2 inches or so that you wrapped back onto it's self to hold it to something, in affect, has been 'cut off', it doesn't contribute to the 'length' of the thing. Simply measure from one end of that radial to the other. Whatever that length is, is what it's length is. - 'Doc