mam123 Posted July 8, 2023 Report Share Posted July 8, 2023 Is there a more specific RF exposure calculator for GMRS other than what the ARRL’s site has? Quote Link to comment Share on other sites More sharing options...
0 SteveShannon Posted July 8, 2023 Report Share Posted July 8, 2023 3 hours ago, mam123 said: Is there a more specific RF exposure calculator for GMRS other than what the ARRL’s site has? No. You enter the frequency, power output, FM as mode type, whatever duty cycle is typical for your usage, and the gain of your antenna. How would you want it to be more specific for GMRS?. http://arrl.org/rf-exposure-calculator If you just want something different from ARRL, there’s this: http://hintlink.com/power_density.htm I haven’t compared the results. mam123 1 Quote Link to comment Share on other sites More sharing options...
0 mam123 Posted July 8, 2023 Author Report Share Posted July 8, 2023 Thank you. Quote Link to comment Share on other sites More sharing options...
0 SteveShannon Posted July 8, 2023 Report Share Posted July 8, 2023 Users of Type 95 devices are not required to perform the evaluation for RF that are required for type 90 and 97 devices. Type 95 devices aren’t even mentioned in the bulletin: https://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet65/oet65.pdf mam123 and WRUU653 2 Quote Link to comment Share on other sites More sharing options...
0 mam123 Posted July 8, 2023 Author Report Share Posted July 8, 2023 Okay. Thank you. Quote Link to comment Share on other sites More sharing options...
0 mam123 Posted July 8, 2023 Author Report Share Posted July 8, 2023 7 hours ago, Sshannon said: Users of Type 95 devices are not required to perform the evaluation for RF that are required for type 90 and 97 devices. Type 95 devices aren’t even mentioned in the bulletin: https://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet65/oet65.pdf Okay. Thank you. Quote Link to comment Share on other sites More sharing options...
0 KAF6045 Posted July 10, 2023 Report Share Posted July 10, 2023 On 7/8/2023 at 7:30 AM, Sshannon said: Users of Type 95 devices are not required to perform the evaluation for RF that are required for type 90 and 97 devices. Type 95 devices aren’t even mentioned in the bulletin: https://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet65/oet65.pdf Though I'd take into account the dates... 1997 probably goes back far enough that most "real" GMRS gear WAS Part 90 equipment, 20 years before the Part 95 rewrite by the FCC. I believe the FCC has also removed the "categorical exemption" clauses. HTs fall into the SAR computation (antenna less than 8" from body) -- and that is complex enough (how much radiation does a <10cm /cube/ of flesh absorb) that it is basically up to the manufacturer to have the evaluation performed before offering the device for sale. Mobiles fall into MPE computation (antenna >8" away) and can be numerically modeled (see the ARRL RF exposure program). Mobiles -- used mobile -- are unlikely to have anyone from the general/uncontrolled population nearby for the averaging period used in the computations; that leaves the controlled population ("you" as the operator) with its averaging criteria. SteveShannon 1 Quote Link to comment Share on other sites More sharing options...
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mam123
Is there a more specific RF exposure calculator for GMRS other than what the ARRL’s site has?
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