Goto Section: 95.1773 | 95.1777 | Table of Contents
FCC 95.1775
Revised as of October 1, 2018
Goto Year:2017 |
2019
§ 95.1775 GMRS modulation requirements.
Each GMRS transmitter type must be designed to satisfy the modulation
requirements in this section. Operation of GMRS stations must also be
in compliance with these requirements.
(a) Main channels. The peak frequency deviation for emissions to be
transmitted on the main channels must not exceed ± 5 kHz.
(b) 462 MHz interstitial channels. The peak frequency deviation for
emissions to be transmitted on the 462 MHz interstitial channels must
not exceed ± 5 kHz.
(c) 467 MHz interstitial channels. The peak frequency deviation for
emissions to be transmitted on the 467 MHz interstitial channels must
not exceed ± 2.5 kHz, and the highest audio frequency contributing
substantially to modulation must not exceed 3.125 kHz.
(d) Overmodulation. Each GMRS transmitter type, except for a mobile
station transmitter type with a transmitter power output of 2.5 W or
less, must automatically prevent a higher than normal audio level from
causing overmodulation.
(e) Audio filter. Each GMRS transmitter type must include audio
frequency low pass filtering, unless it complies with the applicable
paragraphs of § 95.1779 (without filtering).
(1) The filter must be between the modulation limiter and the modulated
stage of the transmitter.
(2) At any frequency (f in kHz) between 3 and 20 kHz, the filter must
have an attenuation of at least 60 log (f/3) dB more than the
attenuation at 1 kHz. Above 20 kHz, it must have an attenuation of at
least 50 dB more than the attenuation at 1 kHz.
return arrow Back to Top
Goto Section: 95.1773 | 95.1777
Goto Year: 2017 |
2019
CiteFind - See documents on FCC website that
cite this rule
Want to support this service?
Thanks!
Report errors in
this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please
help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
hallikainen.com
Helping make public information public