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16 lip 2020 · A VERY easy to make, effective antenna for 2 Meters. Very cheap to build and performs really well as a portable antenna.
Antena End Fed – wielopasmowa antena, która dla wybranych pasm będzie pracować bez konieczności stosowania skrzynki antenowej. Świetna antena do pracy w terenie, podczas aktywacji gmin PGA, parków jak również szczytów górskich w programie SOTA.
If you attended Field Day 2022, you may have been one of the students that learned how to build an end fed half wave Antenna and actually got to build one and take it home. For those that were not able to do so, this page is for you.
antenna is based on any number of parameters: specifically, the frequency or band of frequencies, location, directivity, and intended power range. This paper discusses some of the more important aspects of the End Fed Half Wave (EFHW) dipole antenna. The frequency band is HF (40 meters), and the intended power is 100 watts.
End-fed half wave antennas are best for temporary antennas using low power and batteries, far from power mains and noise sources. They are more prone for problems near noise sources or consumer gear, and can easily exceed FCC RF exposure limits with surprising low power levels.
This antenna, which works on 10, 15, 20, and 40 meters, has a very high impedance of around 2,500 Ohms. The kit includes the parts needed to construct a 49:1 impedance matching network, which will transform the impedance to 50 Ohms, which will suit most transceivers.
For really long range, these end-fed MFJ 1714S 2-Meter Handheld Antennas offer a full half-wave element that is hard to beat. These telescopic antennas are 10.5 in. when collapsed and perform like a rubber duck.
