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80m-40m Dual Band Vertical
Hopefully this will help others looking for a good 80m/40m antenna. I have enjoyed this antenna project and it works very well
post 29 May 2024
Antenna Vertical Links →
Butternut HF2V Ground Plane antenna Hints + 160mt kit, IC8POF
The HF2 works on 40-80 meter bands and on 160 with an add-on kit
Butternut HF2V 80 and 40 meter modifying
A few years ago, I spent an afternoon modifying my HF2V to improve bandwidth and performance on 80 meters
Butternut HF9V
La Butternut e' stata ottimizzata direttamente sul tetto con ROS prossimo ad 1:1 in tutte le bande tramite analizzatore MFJ alla base
Compact 4-SQUARE 40m Antenna
The cross arms can be oriented to any compass bearing to suit personal needs.2. The four 1/4 antenna wires are cut for the 7MHz band using the formula 1/4 feet =234/F MHz. For 7050 KHz this works out to be about 33' 3" feet (10.19m)
DF Antenna Arrays
Perhaps the most important piece of of the DF array is arguably the antenna itself. For a system that uses an electrically spun antenna like a doppler DF- this is certainly important
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The HF2 works on 40-80 meter bands and on 160 with an add-on kit
A few years ago, I spent an afternoon modifying my HF2V to improve bandwidth and performance on 80 meters
La Butternut e' stata ottimizzata direttamente sul tetto con ROS prossimo ad 1:1 in tutte le bande tramite analizzatore MFJ alla base
The cross arms can be oriented to any compass bearing to suit personal needs.2. The four 1/4 antenna wires are cut for the 7MHz band using the formula 1/4 feet =234/F MHz. For 7050 KHz this works out to be about 33' 3" feet (10.19m)
Perhaps the most important piece of of the DF array is arguably the antenna itself. For a system that uses an electrically spun antenna like a doppler DF- this is certainly important
Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated