Hello from Saipan - Northern Mariana islands
QRV from the home station starting October
QRV from the beach starting December
I'm STILL waiting for equipment to arrive.
Antennas used portable at the beach
2x 2M9DXA
2x 70cm23DXA
Maximum antenna elevation
144 MHz 60°
432 MHz 45°
Theoretical gain of antennas at 5° elevation
144 MHz
6 dB ocean gain
3 dB phasing gain
700 Watts
23.30 dBi
237,000 Watts ERP
432 MHz
6 dB ocean gain
3 dB phasing gain
500 Watts
28.00 dBi
317,000 Watts ERP
Highly optimistic gain numbers. Real world is probably 15% to 18% less
Tank Beach
QTH for working NA during my moonrise.
QTH for working NA during my moonrise.
Tank Beach
Moons azimuth will always be inside this photos borders for NA.
Portable tripod 2 - 3 meters from water.
144 MHz maximum operating time from 0° to 60° is 6 hours.
432 MHz maximum operating time 0° to 45° is 4 hours.
Theoretical 6dB of ocean gain from moonrise to 10°
Extremely quiet RX location
432 MHz maximum operating time 0° to 45° is 4 hours.
Theoretical 6dB of ocean gain from moonrise to 10°
Extremely quiet RX location
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There are several operating locations for my AS/EU/NA moonset I can choose from.
Moons azimuth will always be inside the following photos borders.
144 MHz maximum operating time for EU 60° to 0° is 4.5 hours.
144 MHz maximum operating time for NA is 5 hours.
432 MHz maximum operating time for EU 45° to 0° is 3.5 hours.
432 MHz maximum operating time for EU 45° to 0° is 3.5 hours.
432 MHz maximum operating time for NA is 4.5 hours.
Theoretical 6dB of ocean gain from 10° to moonset
Extremely quiet RX locations
Theoretical 6dB of ocean gain from 10° to moonset
Extremely quiet RX locations
Car is parked right at the water allowing equipment to operate in air conditioning.
Total coax length is 5 meters. Practically zero attenuation.
The front 3 meters of the antennas are directly over the ocean.
Another drive up beach location for working AS/EU/NA.
All equipment remains in the car & out of the sun, rain & humidity.
Option #3
Moonset azimuth for 365 days a year is in between the two trees.
Portable tripod is firmly secured into the ground.
Moonset azimuth for 365 days a year is in between the two trees.
Portable tripod is firmly secured into the ground.
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Home station
2M16DXP antenna
Preamp is 1 meter from the antennas feed point.
Total coax length is 5 meters. Practically zero attenuation.
White rope provides Armstrong elevation.
Waiting for the last few items to arrive so it can finally be QRV.
Maximum antenna elevation is 36°
White rope provides Armstrong elevation.
Waiting for the last few items to arrive so it can finally be QRV.
Maximum antenna elevation is 36°
Maximum 144 MHz operating time for NA from 0° to 36° is 2.5 hours.
Maximum 144 MHz operating time for AS/EU 36° to 0° is 3 hours.
1kW amplifier.