July 2002
Intermediate to advanced
344 pages
8h 37m
English
Content preview from Newnes Radio and RF Engineering Pocket Book, 3rd Edition
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repeater systems where several users subscribe to, and use, the station
is often also referred to as PMR.
18.8 UK CB radio
27 MHz band: 27.60125 to 27.99125 MHz
40 channels at 10 kHz spacing.
Max. erp, 2 W; max. transmitter output power, 4 W.
Antenna: single rod or wire, 1.5 m overall length, base loaded.
If mounted higher than 7 m transmitter output to be reduced at
least 10 dB.
Modulation: FM only, deviation ±2.5 kHz max.
934 MHz band: 934.025 to 934.975 MHz
20 channels at 50 kHz spacing (may be reduced later to 25 kHz).
If synthesizer used spacing may be 25 kHz on precise channel
frequencies specified.
Max. erp, 25 W; max. transmitter output power 8 W. If antenna
integral, max. erp, 3 W.
Antenna: may have up to four elements, none exceeding 17 cm.
If ...
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