io farei cos?:
da un lato l'antenna che hai comprato (anche se MOOOLTO esagerato) e dall'altra l'antenna originale
nn credo sia fattibile.....vi spiego xche` ......vi metto qui i dati effettivi senza la posiz. geografica e vi renderete conto che malgrado siano 980 mt la questione e` piu` complicata....
ecco riportati i ati effettivi del collegamento ......
vi ho evidenz. (sotto )che i 2 punti sono con un dislivello e che quindi oltre al puntamento ci vuole anke l`elevazione corretta..... oltretutto su google map ho visto ke c`e` campo semi-libero ma nn perfettamente visibile....quindi ci vogliono necessariamente 2 antenne da un buon guadagno ....perfettamente puntate.
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www.gbppr.org Highest Transmitted Frequency : 2.467000 GHz (2467.000000 MHz)
Wavelength : 0.1215 meters (12.1521 centimeters)
: 0.3987 feet (4.7843 inches)
Transmitter RF Power Output : 15.000 dBm (31.623 milliWatts)
: -15.000 dBW (0.032 Watts)
: -45.000 dBk (0.00003 kiloWatts)
Transmitter Transmission Line Type : Belden 8267 (RG-213)
Transmitter Line Length : 2.00 meters (6.56 feet)
Transmitter Line Loss Specification : 48.43 dB/100-meters (14.76 dB/100-feet)
Calculated Transmitter Line Loss : 0.97 dB (0.48 dB/meter) (0.15 dB/foot)
Transmitter Line Efficiency : 80.01 % (acceptable line loss)
Total Transmitter Connector Loss : 0.12 dB through 2 connectors
Total Transmitter Line Loss : 1.09 dB
Transmitter Antenna Peak Gain : 15.00 dBi (12.85 dBd)
Transmitter Antenna 3 dB Beamwidth : 29.16 ?
Total RF Input Power to the Antenna : 13.91 dBm (24.59 milliWatts)
FCC Part 15.247 Allowed RF Input Power to Antenna : 27.00 dBm (501.19 milliWatts)
Transmitter Antenna Height : 1.00 meters (3.28 feet) AGL
Transmitter Antenna Site Elevation : 72.00 meters (236.22 feet) AMSL
Overall Transmitter Antenna Height : 73.00 meters (239.50 feet) AMSL
Transmitter Distance to the Radio Horizon : 4.12 kilometers (2.56 miles)
Transmitter to Receiver Antenna Mechanical Tilt : Ʋ.3363 ? (UPWARD)
Receiver Transmission Line Type : Belden 8267 (RG-213)
Receiver Line Length : 1.00 meters (3.28 feet)
Receiver Line Loss Specification : 48.43 dB/100-meters (14.76 dB/100-feet)
Calculated Receiver Line Loss : 0.48 dB (0.48 dB/meter) (0.15 dB/foot)
Receiver Line Efficiency : 89.45 % (acceptable line loss)
Total Receiver Connector Loss : 0.12 dB through 2 connectors
Receiver Line Miscellaneous Loss : 0.00 dB
Total Receiver Line Loss : 0.61 dB
Receiver Antenna Peak Gain : 14.00 dBi (11.85 dBd)
Receiver Antenna 3 dB Beamwidth : 32.72 ?
Receiver Antenna Height : 1.00 meters (3.28 feet) AGL
Receiver Antenna Site Elevation : 144.00 meters (472.44 feet) AMSL
Overall Receiver Antenna Height : 145.00 meters (475.72 feet) AMSL
Receiver Distance to the Radio Horizon : 4.12 kilometers (2.56 miles)
Receiver to Transmitter Antenna Mechanical Tilt : -4.3363 ? (DOWNWARD) Vertical Space Diversity Antenna Height : 0.00 meters (0.00 feet) AGL
Diversity Antenna Gain : 0.00 dBi (-2.15 dBd)
Calculated Diversity Antenna Line Loss : 0.00 dB (0.48 dB/meter) (0.15 dB/foot)
Diversity Line Miscellaneous Loss : 0.00 dB
Overall Diversity Receiver Antenna Height : 145.00 meters (475.72 feet) AMSL
Transmitter Site Name : casa
Transmitter Site Latitude : eliminate (
Transmitter Site Longitude : eliminate (")
Receiver Site Name : casa 2
Receiver Site Latitude : eliminate (")
Receiver Site Longitude : eliminate (")
Azimuth From Transmitter Site to Receiver Site : 283.08 ? East of true North
Azimuth From Receiver Site to Transmitter Site : 103.08 ? East of true North
Total Path Distance : 0.95 kilometers (0.59 miles) Free Space Path Loss : 99.85 dB
Estimated Urban Area Path Loss : 164.75 dB
Total System Free Space Path Loss : 99.86 dB
Total System Urban Area Path loss : 164.76 dB
Peak Effective Isotropic Radiated Power (EIRP) : 28.908 dBm (777.678 milliWatts)
: -1.092 dBW (0.778 Watts)
: -31.092 dBk (0.00078 kiloWatts)
Unfaded Free Space Received Carrier Power Level : -57.56 dBm (296.13 ?V)
Unfaded Urban Area Received Carrier Power Level : -122.46 dBm (0.17 ?V)
Receiver Threshold (sensitivity) : -90.00 dBm (7.07 ?V)
Thermal Noise Free Space Fade Margin : 32.44 dB (Urban : -32.46 dB)
Diversity Thermal Noise Free Space Fade Margin : 32.44 dB (Urban : -32.46 dB)
Ideal Thermal Noise Fade Margin for This Climate : 22.95 dB
Composite Free Space Fade Margin : 32.44 dB (Urban : -32.46 dB)
Dense, Dry, In-Leaf Temperate Climate Foliage Loss : 0.50 dB/meter (0.15 dB/foot) worst case
Absolute Minimum Antenna Height for Either Antenna : 3.24 meters (10.62 feet)
One Way - No Spaced Vertical Antenna Diversity
Annual Free Space Multipath Reliability Estimate : 99.99999993 % (Urban : 99.77681490 %)
Annual Free Space Multipath Outage : 0.01 seconds (Urban : 6.58 hours)
Worst Month Free Space Multipath Outage : 0.00 seconds (Urban : 1.61 hours)
Annual Free Space Severely Errored Seconds : 0.01 (Urban : 23675.48)
Worst Month Free Space Severely Errored Seconds : 0.00 (Urban : 5802.81)
One Way - With Spaced Vertical Antenna Diversity
Vertical Spacing for Diversity Antennas : 43.28 meters (141.99 feet) (calculated)
Worst Month Free Space Multipath Outage : 0.00 seconds (Urban : 1.61 hours)
Annual Free Space Severely Errored Seconds : 0.00 (Urban : 23675.48)
Worst Month Free Space Severely Errored Seconds : 0.00 (Urban : 5802.81)
Effective Earth Radius (K Factor) : 4/3
Climate Factor : 1.00
Urban Environment Factor : Urban - Large City
Terrain Roughness (std. dev. of elevations) : 15.00 meters (49.21 feet)
Average Annual Temperature : 20.00 ? C (68.00 ? F)
Maximum Free Space Wave Communications Distance : 8.24 kilometers (5.12 miles)
Receiver Site Grazing Angle : 0.00 ?
Estimated RF Power Density Below the Radiating Antenna : 0.016 mW/cm2
FCC OET Bulletin #65 Maximum Permissible Exposure : 1.00 mW/cm2
Distance to RF Safety Compliance From Transmit Antenna : 0.14 meters (0.46 feet)
