Does a mobile antenna need to be grounded?
Does a mobile antenna need to be grounded?
(1) GROUNDING ANTENNA: Obtaining a good ground is very important to any HF mobile installation. No matter where your antenna is mounted, it is highly recommended you run a heavy copper strap or braid (1″ to 3″) between the body and frame of your vehicle.
What is the length of a 40 meter dipole?
Read more about . . . . Dipole Length Calculations.
| Approximate Lengths for HF Ham Band Dipole Antennas | ||
|---|---|---|
| Band (MHz) | Length (Feet) | Length (metres) |
| 7.0 MHz (40 metres) | 68.5 | 21.1 |
| 10.1 (30 metres) | 47.5 | 14.7 |
| 14.00 (20 metres) | 34.3 | 10.6 |
What is formula for 40 meter vertical antenna?
The most widely used formula to calculate the approximate overall length of wire required for a dipoleis:468 / frequency (MHz) = length of wire in feet. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. The results are conveniently displayed in inches, centimeters, feet and meters.
What is the frequency of the 40 meter band?
The 40-meter or 7-MHz band is an amateur radio frequency band, spanning 7.000-7.300 MHz in ITU Region 2, and 7.000-7.200 MHz in Regions 1 & 3. It is allocated to radio amateurs worldwide on a primary basis; however, only 7.000-7.100 MHz is exclusively allocated to amateur radio worldwide.
What is the length of a 40 Meter Dipole?
Your dipole is cut for 40 meters or about 66 feet total length and you feed it with 450 ladder line to a tuner to make it a multibander. You would use either, 42-52, 73-83, 112-123 or 145-155 feet according to the chart above.
What is 40 meter?
You are currently converting Distance and Length units from Meters to Feet. 40 Meters (m) = 131.2336 Feet (ft) Visit 40 Feet to Meters Conversion