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Portable remote tunable magnetic loop
Covered HF bands: 40m to 10m 5.5MHz-29.8MHz Max. power 10W tested with an Yaesu FT-450AT Remote tunable through the coax
post 05 Dec 2024
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Magnetic Loop Antenna
Aligning the antenna is straightforward, first set the switch to the first band position 20metres and adjust the corresponding trimme
Magnetic loop antenne
Coaxial cable circumference 40 mm. These cables were 30 cm underground and have served as power cables for the VHF antenna for a long time
Magnetic Loop Antenna 30m, 20m, 17m, 15m, 12m, 10m Bands
A properly designed and constructed small loop of nominal 1m diameter will outperform any antenna type except a triband beam on the 10m/15m/20m bands
Magnetic loop double loop
Much has been published about magnetic antennas. Their performance on the air with a loop circumference shorter than 1/4 λ often belies their low theoretical efficiency
Magnetic Loop Antenna
The loop is 1.6m in diameter and uses 8 pieces of 15 mm copper pipe cut to 61cm long. It tunes from 20 through 80 meters
150
Aligning the antenna is straightforward, first set the switch to the first band position 20metres and adjust the corresponding trimme
Coaxial cable circumference 40 mm. These cables were 30 cm underground and have served as power cables for the VHF antenna for a long time
A properly designed and constructed small loop of nominal 1m diameter will outperform any antenna type except a triband beam on the 10m/15m/20m bands
Much has been published about magnetic antennas. Their performance on the air with a loop circumference shorter than 1/4 λ often belies their low theoretical efficiency
The loop is 1.6m in diameter and uses 8 pieces of 15 mm copper pipe cut to 61cm long. It tunes from 20 through 80 meters
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62