Yahoo Poland Wyszukiwanie w Internecie

Search results

  1. 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.

    • Bias Tee

      Bias Tee - Antena EFHW End-Fed halfwave - Radiohobby.pl

    • Przełącznik antenowy KF

      Przełącznik antenowy KF - Antena EFHW End-Fed halfwave -...

    • Keyer

      Keyer - Antena EFHW End-Fed halfwave - Radiohobby.pl

    • Up Konwerter SMD

      Up Konwerter SMD - Antena EFHW End-Fed halfwave -...

  2. To help new hams prepare for the exciting world of HF opening up during Cycle 25, ARRL has partnered with HF Kits to bring you this easy-to-build four-band antenna kit: an end-fed half-wave (EFHW) antenna.

  3. 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.

  4. 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.

  5. 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.

  6. EFHW-8010-1K-Plus™ Multi-Band End Fed Half Wave Antenna. This is an End-Fed Half-Wave (EFHW*) antenna for 80/40/30/20/17/15/12 and 10m bands. Unlike many END FED antennas on the market, this one does not require the Antenna Tuner to operate.

  7. half-wave antennas. An end-fed half-wave (“EFHW”) antenna has a very high feedpoint impedance, often 1000 to 5000 ohms (depending on the diameter). The radiation pattern on the fundamental frequency (where the antenna is 1/2 wavelength) will be similar to the same wire fed in the center as a dipole (but this is not the case on harmonics).

  1. Ludzie szukają również