I bought 2 walkie talkies for personal use and I want to make sure I use the FRS and not the other. I read that you're not supposed to use channels 1-7 without a license, and that when on a FRS channel it is only 0.5 Watt. What does that mean? The mile range is 12 miles and is that effected when using the FRS? Also, as a procedure guideline it is telling me to transmit no more than 50 % of the time, what does that mean? Thank you for your help!
2006-06-25 13:52:06 · 4 answers · asked by Anonymous in Consumer Electronics ➔ Other - Electronics
The Family Radio Service (FRS) and General Mobile Radio Service (GMRS) are 2 separate services. They share some common frequencies, and also have frequencies unique to their respective services.
On a 22 channel consumer-grade radio, you may operate without a license on channels 7-14. You may also operate on channels 1-7 if you use LOW power only. FRS is restricted to 500 mW Effective Radiated Power (ERP).
Use of Channels 15-22 is forbidden without a GMRs license, and channels 1-7 on high power require a GMRS license also.
RF emission guidelines cover a 50% duty cycle. This is say, 1 minute transmitting, and 1 minute receiving. Do not concern yourself if you use the radios under normal operating conditions.
Range claims by manufacturers are grossly overstated. Power output claims are also deliberately misleading. What you may think is the actual power output of the radio is actually power input to the transmitter circuitry, or power put into the antenna before antenna loss.
You can expect ranges averaging 3/4 of a mile in most cases. anything else should be considered a "bonus".
2006-06-26 10:44:20 · answer #1 · answered by Anonymous · 2⤊ 0⤋
Frs Gmrs Frequencies
2016-10-01 11:05:10 · answer #2 · answered by ? 4 · 0⤊ 0⤋
FRS: http://en.wikipedia.org/wiki/Family_Radio_Service
GMRS: http://en.wikipedia.org/wiki/GMRS
You need a radio license if the radio's power is over a certain amount, and you are transmitting on certain frequencies. FRS is pretty weak (.5 watts), so you don't need a license, but GMRS is much stronger, so you need a license.
FRS and GMRS frequencies overlap and share channels. You can transmit on GMRS channels without a license IF you use low power FRS. High power on GMRS requires a license (but lots of people ignore that).
FRS is only good for 2 miles or so (depending on environment), so your 12-mile radio is probably an FRS and GMRS unit, using GMRS power for the longer range (license required).
As for the procedure guide, and transmitting for 50% of the time or less bit - well, that's just common sense and good manners. There are some people out there who want to use their GMRS as a baby monitor or something, or just can't shut up, and block out everyone else's conversations. That makes the channel unusable, which is no fun. So, they are just saying to keep your talking to a minimum, since there are only 22 channels for everyone in the country to use.
2006-06-25 15:27:39 · answer #3 · answered by Electro-Fogey 6 · 1⤊ 0⤋
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RE:
What is the difference between FRS abd GMRS?
I bought 2 walkie talkies for personal use and I want to make sure I use the FRS and not the other. I read that you're not supposed to use channels 1-7 without a license, and that when on a FRS channel it is only 0.5 Watt. What does that mean? The mile range is 12 miles and is that effected...
2015-08-07 18:00:29 · answer #4 · answered by Anonymous · 0⤊ 0⤋
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2015-08-04 04:32:17 · answer #5 · answered by Elyssa 1 · 0⤊ 0⤋