Lee, K1VZI communicates with his friend hundreds of miles away through a satellite passing overhead. He gave me a demonstration of how it is done using mapping software and automatic positioning directional antennas. This contact was done in CW mode (Morse code) transmitting on 70cm and receiving on 2m. Notice the frequency shift with dopplar effect and the need to constantly adjust the dials as the satellite is zooming overhead!
Basics of building HF/VHF cubical quad antenas Read more
The Comet FHJ-350M, Portable 9-Band, 1/4 wave base loading telescopic antenna for HF through 6M. Frequency can be changed by means of shorting plug. Compact (less than 15in) portable antenna... Read more
MFJ VNA Antenna Analyzer covers 1 to 230 MHz, 1Hz resolution.•Frequency sweep plots: SWR, Impedance, Resistance, Reactance,Phase Angle, Complex Return Loss, Smith Chart •Sign of reactance•Am... Read more
Active Antenna Amplifier The Kit The amplifier kit consists of the following parts: Amplifier board (mounted and tested) Control board (mounted and tested) 6-pin Female connector for connect... Read more
A system to facilitate emergency radio communications from parking lots using lamp posts as antenna masts. Designed and built by the kids of the 721st Mechanized Contest Battalion WC2... Read more
Arsctl is a server side application which makes all your antenna rotators available on a network. Arsctl allows you to conveniently control your rotators from any computer / tablet or smartp... Read more
Icom Mobile Antennas AH-760, Wide Frequency Heavy-Duty Moving Coil Antenna 200W PEP SSB, 125W PEP CW/DATA 1.6MHz–29.999MHz wide frequency coverage with the supplied whip antenna 350mS high-s... Read more
Comet GP-15 Tri-Band VHF/UHF Base Vertical Antennas provide good gain figures on the 6-meter, 2-meter, and 70-centimeter bands in a compact 7.9 foot package. These superior-quality base stat... Read more
Air ‘Discus’- Low Profile Magnetic VHF 2m Antenna : 145.500MHz centre, +/-4MHz Power – 100W Omni Imped – 50 ohm VSWR – 1.5:1 Gain -2dB Radiator – Aluminium Radome – UV Black ABS 3m RG58 L/Lo... Read more
Read great article from VE3VN – 40 Meters 4-element Wire Yagi : Read more
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fbasics-building-hfvhf-cubical-quad-antennas%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fcomet-hfj-350m-portable-hf-antenna-9-bands%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fnew-videos-mfj-226-1-230-mhz-antenna-expect-times-graphic-analyzer%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Factive-antenna-amplifier-model-aaa-1c%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Femergency-antenna-pla1-system-e-aps-wc2fd%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Ficom-mobile-antennas-ah-760-ah-740-1-6mhz-29-999mhz%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fcomet-gp-15-tri-band-vhfuhf-base-vertical-antennas-gp-15%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fair-discus-low-profile-magnetic-vhf-2m-antenna%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2F40-meters-4-element-wire-yagi-ve3vn%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found
in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fsatellite-communication-with-morse-code-and-tracking-antennas-demo-by-lee-k1vzi%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
