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Frank Gilliland wrote in message . ..
In , Earl Johnston wrote: On Wed, 09 Jul 2003 19:30:37 -0700, Frank Gilliland wrote: Lou Franklin can help! Pay him money and he will help you to violate federal regulations! But don't ask him to help you pay the fines...LOL! While he certainly can help you break a number of federal regulations, he also offers some things which "appear" to provide a legal performance boost. I don't have the background or education to know if these things are the CB equivalent of snake oil, or if they really work. I would appreciate the comments of the many technically proficient members of this newsgroup. In particular, I'm looking at the plans for his CP beam antenna Circular polarization of a signal is caused by "Faraday rotation" as a signal passes through the upper atmosphere, and occurs mainly with frequencies from 100 to 1000 MHz. Unless you plan on tuning in on satellites in that frequency range, an antenna designed for circular polarization isn't going to do much good. IOW, the term was probably adopted into CB mythology to describe a helical antenna, which is no more efficient than any fiberglass stick antenna, and less efficient than an unloaded whip. Nearly all CB radio antennas are vertical, and therefore vertically polarized. You are wasting your resources trying to make an antenna that's capable of receiving both vertical and horizontal polarization. For lots of antenna information, here's a good place to start: I'd like to be there when you tell that to Avanti, makers of the PDL-II and Moonraker series of antennas, which feature selectable horizontal and vertical polarization! I think they would laugh at you, Frankie, as will the many owners of those antennas. http://www.ac6v.com/antprojects.htm and the Digital Speech Processor kit. I have the skills required to construct either, but not the knowledge to know if either project is worth the effort. A speech processor is an excellent idea, but I have no idea if Lou's even works. I certainly have some misgivings about 90% average modulation! What? A "commercial broadcast engineer" that can't look at a schematic and know whether the circuit works as advertised or not? "90% average modulation" would be great on AM (ask a real commercial radio engineer, Frankie; they use 'em all the time), but when the operator isn't saying anything there'd be a rather obnoxious noise transmitted as the circuit searches for anything to keep the modulation at 90%. As witness the BBC some years ago, until they learned to turn down the processing. But why don't you know this IF you're really a commercial broadcast engineer as you claimed? |
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