The purpose / advantage of SNPs is provide pairs for community or small area repeaters where no 'standard' pairs are available.
Class of Repeater
Shared / Non-Protected
Coverage Radius
Limited
Protection Radius
25 Miles
The standard for testing the repeater's coverage radius shall be a mobile station with a center of roof mounted
antenna, with an ERP of 10 watts. This can be a radio at 15 watts with a quarter-wave antenna or a radio at 6.5 watts with a 5/8-wave antenna. Using this equipment, a mobile station is inside a repeater's receive coverage
radius if the system is receiving the mobile station at least 80% copy, 100% of the time. For testing repeater
transmitters, a mobile station using a 5/8-wave antenna is inside a repeater transmitter's coverage radius if the mobile station is receiving the repeater's transmitter at least 80% copy, 100% of the time.
All tests should be made at average terrain, during non-enhanced band conditions.
Specifications for 2M SNP Repeaters
Frequencies -
Power Out - Tower Height - Antenna - Coverage -
Radius of Operation- CTCSS -
(4 Pairs) TX (Out) - 145.210 / RX -.600
TX (Out) -
145.230 / RX -.600
TX (Out) - 145.250 / RX -.600
TX (Out) - 145.270 / RX -.600 25 watts maximum (from duplexer output) No more than 100 ft. AGL No more than 6 dBi gain No
'long range' repeaters allowed on SNP frequencies No 'mountain top' sites allowed Protected to 25 mile radius only MANDATORY
