ANSWER TO THELAGACY ABOUT MICHELLE: She doesn’t want talk about those things because of the nature of the business she is in. She has a very good reputation in front of the FCC and does not want that reputation sullied unnecessary chat about uncertified devices. Why invite the referee into the game?
Asking the FCC is like asking the IRS. Depending on who you talk to creates varied opinions. For example, FCC Amateur Radio Rules specifically prohibit one-way broadcasting. But they allow ARRL to transmit “bulletins” 5 days a week. Also there is the subject of Field day where the rules are bent to allow Technicians to transmit in the Extra…[Read more]
Over the years the FCC has cited many AM Part 15 operators for ground leads that are excessively long and as such become radiators as well. There is no dispute from me on this point.
What I have noticed in these NOV’s is that often the ground lead is running down the side of a mast, attached to a tower or just plain TV stand-offs screwed into the…[Read more]
I would like to talk about a subject but I can’t because it would draw in information from a touchy subject: LGL’s
However I think it would be useful with regard to building obstruction of RF.
Yes with regard to predicted signal strength. The useable (building penetration) is 3 to 5 miles from the transmitter site for a LPFM.
City Grade would be the closest contour nearest the antenna:
70 dBuV or about 3.2 mV
The next is the protected contour of 60 dBuV or 1 mV
There is a nice write-up in the March 1, issue of RADIOWORLD about the FCC not doing their job with regard to AM radio. The opinion written by Timothy Cutforth titled “Improve the Senior Band With These Steps” is a detailed explanation of what the problem is and how to fix it. Page 29.
Over the past few years I’ve some exaggerated claims about range with power levels of 20 watts or less. Some limiting factors can include antenna height, terrain and building penetration. While is might be possible to detect a signal with a sensitive car radio, building penetration would be nil at distances greater than a couple of miles.
It should also be noted that the Procaster was certified with a 1 meter ground lead attached in addition to the supplied stock antenna, thus exceeding the 3 meter limit for radiating conductors.
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