Density of stations transmitting in the simulation bandwidth 0.0015 transmitter/km2 0.007 transmitter/km2 0.007 transmitter/km2 1] specifies several emission masks: – One mask is used for Monte Carlo analysis with mobile service and compatibility with broadcast service. It is specified for SSB mode only. It is also the one provided by Radio Amateur contribution at WP 5A [Ref. 2]. – Another mask is used for MCL analysis with mobile service, derived from ITU-R SM.1541, Annex 9 [Ref. 3], together with emission masks for FM and Wide Band modes. Noting that the emission mask for FM and Wide band is not yet available, the present study takes into account the following emission masks: – For SSB mode: the mask specified by Amateur (see Figure A3.3.1); – For FM mode: the mask specified by ITU-R SM.1541 for the narrow band case (see Figure A3.3.2); – For Wide band mode: the mask specified by ITU-R SM.1541 for the wide band case (see Figure A3.3.3). A3.3.1 Radio Amateur emission mask – SSB mode A3.3.2 Radio Amateur emission mask – Narrow band case (FM mode) A3.3.3 Amateur emission mask –Wide band case A3.3.4 Radio Amateur Yagi radiation pattern A3.3.3 Modeling of Governmental System Behavior The tables below list the parameters of the Governmental system that is deployed in the VHF band. They are aligned with characteristics as discussed at CEPT/PTD (see Error! Reference source not found.) and forwarded to ITU-R WP 5 (see Error! Reference source not found.). The system encloses several kinds of devices. They are integrated into: – base stations,
– land vehicles, – handsets. A3.3.2 System characteristics System type Tactical mobile Frequency range 30-88 MHz Signal bandwidth 16 kHz Protection criteria I/N = –6 dB Receiver Protection Ratio (SINAD) 10 dB Typical sensitivity –112 dBm Deployment environment Rural, over land A3.3.3 Base Station characteristics Receiver type Base station Antenna height (meters) 8 m Antenna polarization Linear Vertical Antenna gain (dBi) 2.15 Antenna radiation pattern Omnidirectional A3.3.4 Vehicular characteristics Receiver type Vehicle Antenna height (meters) 2 m Antenna polarization Linear Vertical Antenna gain (dBi) -3 dBi Antenna radiation pattern Omnidirectional A3.3.5 Handset characteristics Receiver type Handset Antenna height (meters) 1.5 m
A3.3.10 Protection distance as a function of frequency separation – RA in SSB mode – Antenna height = 1 000 m Frequency separation Base station Vehicle Handset 0 kHz 205.4 km 195.6 km 187.5 km 2.7 kHz 195.8 km 186 km 177.9 km 5.4 kHz 187.2 km 177.4 km 169.4 km 10.8 kHz 169.2 km 159.4 km 151.4 km 21.6 kHz 157.5 km 147.8 km 139.9 km 32.4 kHz 157.4 km 147.6 km 139.7 km 200 kHz 154.3 km 144.6 km 136.7 km 400 kHz 150.7 km 141 km 109.9 km 600 kHz 147.1 km 137.4 km 70.8 km 800 kHz 143.5 km 102.2 km 45.6 km 1 000 kHz 104 km 57.5 km 25.6 km A3.3.5.3.2 Radio Amateur FM mode as interferer The required protection distance as a function of frequency separation for a Radio Amateur in FM mode is synthetized in the table below and illustrated in the figures below. A3.3.11 Protection distance as a function of frequency separation – RA in FM mode – Antenna height = 10 m Frequency separation Base station Vehicle Handset 0 kHz 78.8 km 56.8 km 39.1 km 10 kHz 62.3 km 42.2 km 27.1 km 15 kHz 54.6 km 35.7 km 22 km 20 kHz 34.3 km 19.8 km 13.3 km 25 kHz 19.3 km 11.9 km 7.5 km 30 kHz 11.3 km 6.5 km 3.95 km 35 kHz 6.2 km 3.3 km 2 km 40 kHz 3.9 km 1.95 km 1.2 km 80 kHz 2.4 km 1.1 km 0.95 km 100 kHz 1.9 km 0.95 km 0.85 km 1 000 kHz 1.9 km 0.95 km 0.85 km A3.3.12 Protection distance as a function of frequency separation – RA in FM mode – Antenna height = 20 m Frequency separation Base station Vehicle Handset 0 kHz 91.9 km 69.4 km 50.3 km
4 Sharing with the radiolocation service Annex 4.1: Wind Profile Radar Systems A4.1.1 Background In the frequency band 46-68 MHz, RR No. 5.162A provides an additional allocation to the radiolocation service on a secondary basis in a number of countries and limited to the use of wind profiler radars. allocation: in Germany, Austria, Belgium, Bosnia and Herzegovina, China, Vatican, Denmark, Spain, Estonia, the Russian Federation, Finland, France, Ireland, Iceland, Italy, Latvia, The Former Yugoslav Republic of Macedonia, Liechtenstein, Lithuania, Luxembourg, Monaco, Montenegro, Norway, the Netherlands, Poland, Portugal, the Czech Rep., the United Kingdom, Serbia, Slovenia, Sweden and Switzerland the band 46-68 MHz is also allocated to the radiolocation service on a secondary basis. This use is limited to the operation of wind profiler radars in accordance with Resolution 217 (WRC97). (WRC12) The relevant Wind profiler radars parameters for sharing studies with amateur service are described in Table A4.1.1 below (to be confirmed): TABLE A4.1.1 System parameter Range of values Pulse peak power (kW) 5 – 60 Average transmitted (kW) 0.5 – 5 Main beam antenna gain (dBi) 30 – 34 Antenna beamwidth (°) 4 – 6 Main pointing elevation angle (°) 90 (zenith) Tilt angle from main pointing (°) 11 – 16 Antenna side-lobe suppression between 0 and 5° compared to horizon (dB) 33 (minimum) – 40 (Median) Antenna height (m) 1 Additional shielding at horizon (dB) TBD Pulse width (µs) 1 – 10 Necessary bandwidth (MHz) 0.2 – 2.2 Occupied bandwidth (MHz) 0.5 5 Protection criteria (I/N)(dB) –6 Noise figure (dB) 3 Maximum interference level in necessary bandwidth (dBW) –154 (for 0.2 MHz bandwidth) –144 (for 2 MHz bandwidth) The reference ITU-R documents related to wind profilers are: – Resolution 217 (WRC-97) – Implementation of wind profiler radars.