Seankw40 replied to the topic Using Tecsun and Similar Receivers to “Measure” Field Intensity in the forum temp 2 weeks ago
Hi I know this is a really old subject but here is a copy of a chart that coverts what you see on the radio over to the correct measurements.
Hope this helps out anyone who trying to use these radios for testing.
I am thinking that these measurements were done in a wide open space what most people do not have.
I was just posting them to show that a more sensitive FM receiver with a possible
elevated antenna could maybe receive a part 15 transmission more than 200 ft away.
This was to show you may be able to set up your FM transmitter outside in a…[Read more]
It been along time since I have been up here with Carl and Neil.
Anyways lets get down to the rules that are for broadcasting on the FM Radio band.
Ok part 15.239 states the opperation of frequencies of 88-108 Mhz.
Now go to subpart C of 15.239
It states The field strength of any emissions radiated on any frequency outside of the…[Read more]
I know you are a Ham Radio operator. Rich keeps referring to W8JI
website but not sure if he is W8JI who has one of the largest ham Antenna
set ups in this country. I am a Ham operator and have been for 4 decades plus
some. I do hold an Extra Class license. Most my receivers and transmitter have been refurbished by me to get them back…[Read more]
Ok I said enough and do not want to offend anyone in anyways.
I have only told you the way the FCC told me how to set up my ground system.
This is for anyone who want to know the Choke size I was told to use was a 1 mili henry
or larger should block all RF signal past my ground wire of 2 ft in length.. My ground wire is 2 ft so anything after…[Read more]
I have other transmitters as well. The FCC told me if I wanted to place a transmitter up really high then I needed to place an RF choke in line with my Ground Wire to make a DC ground connection for Lighting strikes.
See the rule says that you can only have 3 meter in total length this would count your Antenna,Lead wire(coax), and Ground…[Read more]
Well Did I mess up and erase the post by Accident ?
It really was not about the ground wire itself but how the company split the transmitter in to two different sections to allow for a coaxial cable to run between both units.
And was able to keep it legal .
That pretty much it.
Sorry my post went a way that explain how the ISS Extender works and why it had been approved by the FCC but I am not retyping it all over again.
If it was removed then I am sorry if it offended anyone but I dont see how explaining how this equipment was approved by the FCC.
Anyways Not sure what happen but it been years since I posted…[Read more]
Hi everyone .
I have been reading this thread. No one really understood the reason why the FCC did what they did with this transmitter but after going over all the rule it was clear how the company was able to get around the rules. They really did not get around the rules they just read them very carefully and found a way to get the most out of a…[Read more]