An eggbeater Antenna - For NOAA weather satellite .
FODtrack Rotator interface with AZ/EL driving relays
Used with a modified CCTV Camera Rotator
as on next photo.
Used with a modified CCTV Camera Rotator
as on next photo.
UHF/VHF cross Yagi antennas with changeable circular polarization coax phase lines
and remote control DC switches.
The rotor mod include adding a voltage feedback potentiometers.
The AZ-Pot connected mechanically to AZ moving part.
The EL-pot driven by a hanging weight ( NUT) to the gravity .
and remote control DC switches.
The rotor mod include adding a voltage feedback potentiometers.
The AZ-Pot connected mechanically to AZ moving part.
The EL-pot driven by a hanging weight ( NUT) to the gravity .
High gain UHF Yagi with cross elements and switching circular polarization
RHCP/LHCP
The VHF Pre-Amp - Transistor was BF981
On services since 10 years
No TR/RX relay . peaked to 137 MHz for receiving the weather satellite .
On services since 10 years
No TR/RX relay . peaked to 137 MHz for receiving the weather satellite .
CI-V interface built on perforated PCB - with external DC power supply
PC sound card interfacing
later 1:1 isolation transformers were added
VHF/UHF on single boom
5 comments:
Solar storm activity take the satellite out? We've had a lot of them recently. Always wonder if they have an effect on the short term weather, or if the effect is more of a long term thing. Huge amounts of energy released from these things.
diseqc switch
wow this is such a great blog..its very useful and informative..love the blog that you have shared..
Youre so awesome, man! I cant believe I missed this blog for so long.
hello..please send me details of VHF pre amp
HELLO Dani Thanks for visit & comment ,for the VHF circuit please check OZ2OE Technical Home Page & Gordon McDonald, VK2ZAB website
73's
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