82695
_Op&Ins MAN_TR2600_K 4-2
station output power, and –11dBm if no cavity filters is used. The output power in dBm from a
Base station with 25 watt output is +44 dBm. The difference is then 55dB, which means almost
100 meters horizontal distance between the antennas. As thumb rule, vertical distance can be
lower, approximate 10dB better isolation will then be obtained, but this depends on several
factors, as material of mast/location of cable in the mast and a small vertical change can give huge
difference in isolation between them, but normally a distance of 30 meter vertical should be
sufficient. All these numbers are calculated from the specs. of TR-2600, so what the blocking
numbers are for the VHF base station on the same site, will depend on the equipment. But these
distances can be reduced using cavity filters, but as cavity filters will only let the correct
frequencies through, the will also have an insertion loss between 0.5 to 2 dB per. filter.
Measurements with cavity filters may be done on request to JOTRON
.
Summary of Contents for TR-2600
Page 1: ...OPERATION AND INSTALLATION MANUAL www jotron com TR 2600 AIS BASE STATION...
Page 53: ...82695_Op Ins MAN_TR2600_K 10 1 10 OUTLINE DRAWINGS 10 1 TR 2600 AIS BASE STATION...
Page 54: ...82695_Op Ins MAN_TR2600_K 10 2 10 2 TR 2600 AIS Transponder...
Page 55: ...82695_Op Ins MAN_TR2600_K 10 3 10 3 Procom CXL 2 1 l Maritime VHF Antenna with FLG Bracket...
Page 56: ...82695_Op Ins MAN_TR2600_K 10 4 10 4 Procom GPS 4 Antenna...
Page 61: ...82695_Op Ins MAN_TR2600_K 11 2...
