ARRL

jrincayc

Joined: Sun, Apr 3rd 2011, 22:32 Roles: N/A Moderates: N/A

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Topic Author Posted On
Why are cellular bands blocked on receivers? ka9wgn on 28/8/11
The law seems to be 47cfr15.121 2(b): (b) Except as provided in paragraph (c) of this section, scanning receivers shall reject any signals from the Cellular Radiotelephone Service frequency bands that are 38 dB or lower based upon a 12 dB SINAD measurement, which is considered the threshold where a signal can be clearly discerned from any interference that may be present.
http://edocket.access.gpo.gov/cfr_2010/octqtr/47cfr15.121.htm

and the Cellular Radiotelephone Service is described at:
http://wireless.fcc.gov/services/index.htm?job=service_home&id=cellular
Why are cellular bands blocked on receivers? ka9wgn on 28/8/11
What is the specific FCC law or ruling that prevents receiving the blocked spectrum? (It is rather hard to petition to remove a rule with out knowing which rule we want to remove.)

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