2m Projects - Omnidirectional Antennas ... I had a problem with my packet radio station and decided that antenna gain was the solution. ... Here’s a 2 meter antenna ... High Gain Dual-Band 2m/440 Handheld Standard SMA Antenna Increase your handheld's VHF/UHF performance with this high gain antenna. Super wide receive (88-900 MHz). 3 db gain (140-174), 5 db gain (420-500) over stock. 15" in length and rated at 10 watts max.
The Antenna Farm : 2 Meter High Gain Antennas - VHF & UHF Mobile Radios Radio Accessories VHF & UHF Hand Held Radios Antennas Mobile Antenna Mounts SWR/Power Meters Adapters Coaxial Cable Two Way Accessories Antenna Accessories DC Power Supplies Coax Cable Accessories Connectors Aviation Radios Repeater Systems Towers & Accessories Duplexers Diplexers & Triplexers VHF & UHF Base Stations Base ... A high-definition digital antenna receives free transmissions from towers maintained by local TV networks. Make your own antenna with PVC pipe and supplies from a hardware store,. This is not a problem if you have cable or satellite TV, but if. Low powered FM transmissions are difficult to pick up by conventional FM antennas. a test antenna, and then measure the difference in signal strength between the two, we can make relative measurement of the gain or loss of the test antenna against the reference dipole. These gain or loss figures are rated in dB. You'll also see gain figures on antennas 2 It is referenced against an isotropic source.
1. TRAM 1180 Amateur 2 Meter Mobile Antenna. The product can reach a frequency range of VHF 144 to 148 and UHF 430 TO 450 MHz. The antenna has a power rating of 100W. Moreover, it has a 38 inch with ¾ NMO Connector. It gets a high gain of 6dBd for better TX and RX. 2. FireStik 2 Meter Mobile Antenna
This design has an honest 3 dBi of gain at 6' elevation (2 dBi free-space) with a suitable pattern for LEO communications--favoring the horizon. At 20' high, the same antenna exhibits almost 6 dBi of gain. The feedpoint is a nominal 50 Ohms at 146.850 mHz. Construction: Antenna gain. Antenna gain is often quoted with respect to a hypothetical antenna that radiates equally in all directions, an isotropic radiator. This gain, when measured in decibels, is called dBi. Conservation of energy dictates that high gain antennas must have narrow beams. This antenna is an 8 element, optimum spaced, 2 meter beam. It features extremely high forward gain, a clean radiation pattern and an excellent front-to-back ratio. The dimensions shown in Figure 2 produce a radiation pattern with low sidelobes and backlobes over the entire 2 meter band. This antenna comes with stainless steel hardware for all ... 2 meter High Gain Low Noise Antennas for 144 MHz with Leading G/T for its length. Excellent suppression of all sidelobes. Low Noise design, Wideband operation, Equally good for EME, Terrestrial or FM Repeater work. Model # Band Stacked Element Phasing/ Wavelength Gain/dB Watts Connector Type Weight Lbs. Length Foot Wind MPH; X30A: 2m / 70cm: 2m: 1 1/2l 70cm: 2 5/8l: 3.0 / 5.5 : 150 This design has an honest 3 dBi of gain at 6' elevation (2 dBi free-space) with a suitable pattern for LEO communications--favoring the horizon. At 20' high, the same antenna exhibits almost 6 dBi of gain. The feedpoint is a nominal 50 Ohms at 146.850 mHz. Construction: