Amateur Radio Band Allocations
902 - 928 MHz Secondary to industrial, scientific and medical devices; automatic vehicle monitoring systems, and government stations. 2300 - 2305 MHz Secondary - No primary amateur service 2305 - 2310 MHz Secondary to fixed, mobile and radiolocation services 2390 - 2400 MHz Primary 2400 - 2402 MHz Secondary - No primary amateur service 2402 - 2417 MHz Primary 2417 - 2450 MHz Co-secondary with government radiolocation (industrial, scientific and medical are primary) 2450 - 2483.5 MHz No amateur - Industrial, scientific and medical *** 5650 - 5725 MHz Co-secondary with space research (deep space) service 5725 - 5850 MHz Secondary - No primary amateur service 5850 - 5925 MHz Secondary to non-government fixed-satellite service
Speed / Bandwidth Constraints For Data
97.307(f)(1)Frequency Range Speed Limit Maximum Bandwidth 50.1 - 148 MHz 19.6 kilobauds 20 kHz 222 - 450 MHz 56 kilobauds 100 kHz Above 902 MHz No speed limit No bandwidth limit
Part 97.311 Spread Spectrum FCC Rules for Ham bands
97.311 SS emission types(a) SS emission transmissions by an amateur station are authorized only for communications between points within areas where the amateur service is regulated by the FCC and between an area where the amateur service is regulated by the FCC and an amateur station in another country that permits such communications. SS emission transmissions must not be used for the purpose of obscuring the meaning of any communication. (b) A station transmitting SS emissions must not cause harmful interference to stations employing other authorized emissions, and must accept all interference caused by stations employing other authorized modes. (c) When deemed necessary by a District Director to assure compliance with this Part, a station licensee must: (1) Cease SS emission transmissions; (2) Restrict SS emission transmissions to the extent instructed; and (3) Maintain a record, convertible to the original information (voice, test, image, etc.) of all spread spectrum communications transmitted. (d) The transmitter power must not exceed 100 W under any circumstances. If more than 1 W is used, automatic transmitter control shall limit output power to that which is required for the communication. This shall be determined by the use of the ratio, measured at the receiver, of the received energy per user data bit (Eb) to the sum of the received power spectral densities of noise (N0) and co-channel interference (I0). Average transmitter power over 1 W shall be automatically adjusted to maintain an Eb/(N0+I0) ratio of no more than 23 dB at the intended receiver.