WebFeb 3, 2024 · Easy, you can use an NGP or No Ground Plane required antenna. We have found that the best antenna for GMRS radios where little to no metallic ground plane is … WebFig25—Simple ground-plane antenna for the 144, 222 and 440-MHz bands. The vertical element and radials are 3/32 or 1/16-inch brass welding rod. Although 3/32-inch rod is preferred for the 144-MHz antenna, #10 or #12 copper wire can also be used. Fig26—A 440-MHz ground-plane constructed using only an SO-239 connector, #4-40 hardware …
Understanding the Quarter-Wave Ground Plane Antenna
WebA monopole antenna is a class of radio antenna consisting of a straight rod-shaped conductor, often mounted perpendicularly over some type of conductive surface, called a ground plane. [1] [2] [3] The driving signal … Web440 Mhz J-Pole Antenna plans. Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. Author use 1/2 inch copper pipe, and the associated fittings necessary. The dimensions aren't typical however, this is what it took to get its SWR low. 70cm yagi antennas. Pictures and plans to build 70 cm yagi antennas. how bout another grape soda
40 meter band antennas projects - The DXZone.com
WebJun 24, 2024 · Simulation Far Field Pattern 2m/70cm “Compromise” - 5.37 and 7.39 dBi. For the potential compromise antenna, with SWR results shown in Figure 3, the far field patterns are good for 2m, and, very good for 70cm. Because the radiator is 1.5X the wavelength of the 70cm band, the effect of that longer length results in excellent low … WebStep 2: Assembly. 1- Strip back 1/8 inch insulation on wire and solder to center of SO239. Make sure solder joint is shiny. If it is dull, reheat it till thoroughly melted. 2- Solder electrical connector to end of second wire. 3- Drill hole in Cap to mount SO239 flush. WebDec 12, 2008 · Small wire brush. Assorted screwdrivers. Dielectric grease. Coax sealant. Plastic ties. Shop towels. Now let's look at the usual suspects for weak CB output. An antenna is to a CB radio what a ... how many pages does scythe have