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Antenna double loop for satellite meteo
Operating frequency = 130 to 170 MHz, center frequency = 137.5 MHz, perimeter of loops = 227 cm , material used = copper or aluminum = 227x3x0.2 cm, horizontal polarization gain 3 dbd
post 23 Apr 2026
Antenna for UHF VHF Links →
Meter loopThe Antenna is more or less Omni Directional and horizontally polarized.It presents a high takeoff angle and is intended for use in the 144.200mhz area
New Helix Antenna DesignGain: 15.9 dBci approximately 1 to 1.5 dB better than the standard Helix antennas I have modeled, pattern: First Side lobes at 36 degrees down 14 dB Average of all remaining sidelobes <25 dB, bandwidth: <0.2 dB variability from 432 to 438 Mhz 50 Ohm Match at <1.2 VSWR from 432 to 438 Mhz
Omni-Gain Vertical Collinear for VHF and UHFAn omnidirectional collinear, is capable of surviving harsh environments. It's a good choice for repeater installations and can be top, or side mounted to the tower
Origine et principe de l'antenne directiveSimplicity in terms of its performance, equivalence with a Yagi antenna, optimally sized, three elements with wide spaced, or four elements with close spaced
7dB VHF Collinear Antenna
This project is about a cheap way of building a colinear antenna for VHF 145MHz, and having about 10dB
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This project is about a cheap way of building a colinear antenna for VHF 145MHz, and having about 10dB
Microsat Ham radio shop for ulari project, aprs, aprs with radio, bluetooth, gps, gsm, ham radio interfaces, weather,accessories, cables to radio
Amateur radio kits by Kanga US
Enigma Component Shop Cable & wire,capacitors, connectors, crystals/oscillators, filters, hardware,kits/modules,test & measurement