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2.1. Antenna length based on the following formulars: 1/2 λ dipole (feet)= 468 / frequency in Mhz. 1/2 λ dipole (meters) = 142.65 / frequency in Mhz. Full wave loop (feet) = 1005 / frequency in Mhz. Full wave loop (meters) = 306.32 / frequency in Mhz. Cut wire slightly longer for connecting insulators and pruning. 22-Jun-2007 09:30 AM.
Antenna Length Calculator. 1. What type of antenna do you want to build? Dipole. Fan Dipole. Inverted Vee. Off Center Fed Dipole. Vertical. 2. What frequency will you be operating on? Frequency: MHz. Meters Feet. 3. Here's your antenna...
This section contains three tables that can calculate antenna shortening factors and antenna lengths, including quarter-wave verticals over perfect ground, half-wavelength dipoles in free space, and long wire vertical and horizontal antennas.
22 mar 2001 · Use the attached Excel spreadsheet to calculate what lengths to avoid when puting up a long wire. This spread sheet was made by W4TME for the Icom AH-4 tuner. Antenna theory is Antenna Theory so this will work for any antenna tuner.
1 wrz 2021 · Manual. cable cutter. This chart serves as an aid in trimming the length of HF antennas. The chart estimates, over the length of an approximate quarter wavelength, the required change in length to shift the fundamental antenna resonance by a specific amount of kHz.
10 sty 2008 · To summarise my understanding, the iPhone has 3 antennas: GSM 850/900 MHz; GSM 1800/1900 MHz; and a WiFi/Bluetooth antenna. They are all positioned at the base of the iPhone, i.e. the bit covered by the black plastic cover.
The formulas used in the calculations, shown at the bottom of the chart, are based upon standard assump tions for wire antennas supported by end insulators. The chart was developed using Visicalc (a registered trademark of VisiCorp), an electronic "spreadsheet" program on an Apple II + computer.
