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HF Helical Antennas: Theory and Practice

HF Helical Antennas: Theory and Practice: by: Igor Grigorov VA3ZNW

Shortened HF Helical antennas have been used by radio amateurs in activity on the Air during a long time. For example, shortened vertical helical antennas have been used in hand held CB radio stations (it is 11- meter HF band) from the 50- years of the 20- century. Some manufacturers produce shortened helical antennas for military and amateurs for lower HF bands- from 3 to 20- MHz. As well shortened helical antennas are widely used in VHF/UHF radio, as amateurs, as commercial...

 

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Contents for AntenTop 01- 2020

 

 

Experimental Helical Antenna for the 40- meter Band

Made on the Form from Empty Bottles

 

 

Lightning Links to Open Book
Antenna Theory	Helical Antennas	Useful Pieces	Simple Keys
Antenna Practice	TV Antennas	Propagation	QRO HF Tube Amplifiers
136 kHz- Antennas	Coaxial cables	LDE	QRO HF Transistor Amplifiers
HF- Antennas	Two wire lines	Interferences	QRP
HF- RX Antennas	Feeder's Toolkit	Filters TVI/RFI	QRP PA
50- MHz Antennas	HF ATU	Homebrew Receivers	Radio and Ham History
VHF- Antennas	ATU for the 6- meters	Homebrew Transmitters	Old Russian/USSR Radio Equipment
UHF -Antennas	Antenna Parts	Matching Circuit for P.A	Amateurs Awards
EH- Antennas	Antenna Towers	QRP Transceivers	Free Radio and Electronics e- Books
TV Channels and Frequencies	Reception of Weather Stations	Useful Data	FM Radio Channels and Frequencies
MagLoop Antennas	Home-Brew Technics in Antenna Tools	PSU for Amateur Radio from Computer	Free Programme and Utility
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Last Updated:

January 30, 2021 18:22