H3RRS Posted November 21, 2017 Share Posted November 21, 2017 Hello Everyone, I'm looking for a decent price FM Transmitter that will relay 700 - 1200 feet. Any help would be truly appreciated! Thank you all! -H3RRS Link to comment Share on other sites More sharing options...
Mr. P Posted November 21, 2017 Share Posted November 21, 2017 Can't go wrong with a CZh-05B, many on here use them as they have a good range and a good price. Link to comment Share on other sites More sharing options...
k6ccc Posted November 21, 2017 Share Posted November 21, 2017 With a halfway decent antenna, any of the CZE-05b or CZH-05b radios will do that - at least on high power, and maybe on low power. OK, now for the disclaimer. Radiating that far will mean that you are operating with a transmit power that exceeds the limits for Part 15 operation. The limit for part 15 operation is a field strength measurement as a specified distance as opposed to a transmit power limit which means that it is much harder for the average guy to measure, and impossible to state that for example, you can run 100mW and be legal. A rough rule of thumb for part 15 operation in the FM broadcast band is it should be usable for a couple hundred feet. That does not necessarily mean you will get a visit from the men in black suits, but you will be exceeding the limits. Link to comment Share on other sites More sharing options...
H3RRS Posted November 21, 2017 Author Share Posted November 21, 2017 9 minutes ago, Mr. P said: Can't go wrong with a CZh-05B, many on here use them as they have a good range and a good price. Thank you! 3 minutes ago, k6ccc said: With a halfway decent antenna, any of the CZE-05b or CZH-05b radios will do that - at least on high power, and maybe on low power. OK, now for the disclaimer. Radiating that far will mean that you are operating with a transmit power that exceeds the limits for Part 15 operation. The limit for part 15 operation is a field strength measurement as a specified distance as opposed to a transmit power limit which means that it is much harder for the average guy to measure, and impossible to state that for example, you can run 100mW and be legal. A rough rule of thumb for part 15 operation in the FM broadcast band is it should be usable for a couple hundred feet. That does not necessarily mean you will get a visit from the men in black suits, but you will be exceeding the limits. How many feet are legal? I am unaware of this and want to follow it to point. Link to comment Share on other sites More sharing options...
k6ccc Posted November 21, 2017 Share Posted November 21, 2017 As I said in the next to last sentence, about 200 feet. Note that a lot of lights shows exceed that and to date I have never heard of anyone getting a visit from the FCC. Link to comment Share on other sites More sharing options...
H3RRS Posted November 21, 2017 Author Share Posted November 21, 2017 1 minute ago, k6ccc said: As I said in the next to last sentence, about 200 feet. Note that a lot of lights shows exceed that and to date I have never heard of anyone getting a visit from the FCC. Thank you for all of this information! Link to comment Share on other sites More sharing options...
Vince4xmas Posted November 22, 2017 Share Posted November 22, 2017 Found that "low" setting (100mW) works best for CZH-05B FM transmitter! Link to comment Share on other sites More sharing options...
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