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17 links

40m Small Loop Antenna - hamradio.me
A well documented article on a small magnetic loop antenna for the 40 meters band ...

[ Hits: 2439 | Votes: 7 | Rating: 5.14 ]

EFHW autotransformer comparison - John Huggins
Two different ways to create autotransformer for end fed half wave wire antennas by using ...

[ Hits: 527 | Votes: 3 | Rating: 2 ]

Installing a Vertical Antenna Base with no Concrete - John Huggins
A step by step approach for a ham radio vertical antenna mount using only a ...

[ Hits: 984 | Votes: 0 | Rating: 0 ]

Mast Mountable J-Pole Antenna - John Huggins
An interesting article on how to make copper cactus J-Pole antennas

[ Hits: 969 | Votes: 7 | Rating: 7.28 ]
Improving the Super-J - hamradio.me
The collinear J Pole often known as the Super J does improve the behavior over ...

[ Hits: 972 | Votes: 2 | Rating: 5.5 ]
Improving Gain of the Super J-Pole Antenna - John S. Huggins
The collinear J Pole often known as the Super J does improve the behavior over ...

[ Hits: 192 | Votes: 0 | Rating: 0 ]
Slim Jim vs. Traditional J-pole Antenna - hamradiome
A comparison among a traditional J-Pole Antenna and 2BCX Slim Jim Antenna

[ Hits: 167 | Votes: 0 | Rating: 0 ]

Portable HF Antenna for the field day - John Huggins
This article describes a project of asymmetrical hatted vertical dipole a portable antenna that can ...

[ Hits: 1646 | Votes: 2 | Rating: 7.5 ]
Asymmetrical Hatted Vertical Dipole - John Huggins
Theory and origins of W4RNL Asymmetrical Hatted Vertical Dipole AHVD for portable operations.

[ Hits: 746 | Votes: 0 | Rating: 0 ]
Build this Vertical Portable HF Antenna - KX4O
An experimental prototype of an asymmetrical hatted vertical dipole antenna that can work on HF ...

[ Hits: 374 | Votes: 3 | Rating: 9.67 ]

Slim Jim vs J-Pole - John Huggins
A comparative article on performance differences between Slim Jim antennas versus J-Pole antennas

[ Hits: 856 | Votes: 2 | Rating: 10 ]

Quarter Waves and Velocity Factor - John Huggins
Coax Velocity Factor in Baluns Does it Matter Test results show coaxial cable velocity factor ...

[ Hits: 208 | Votes: 0 | Rating: 0 ]

Digital Modes Need Calibrated Soundcards - hamradio.me
Article on importance on correct procedure to calibrate your PC sound card for digital mode ...

[ Hits: 314 | Votes: 0 | Rating: 0 ]

Diamond CP22E Review - John Huggins
Diamond Antenna CP22E VHF base station antenna review This antenna has a remarkable design achieving ...

[ Hits: 478 | Votes: 0 | Rating: 0 ]

Pretty Lousy - PL 259 Connectors - hamradio.me
The PL259 SO239 aka UHF connectors have harsh critics and religious defenders Questionable measurement techniques ...

[ Hits: 325 | Votes: 0 | Rating: 0 ]
UHF Connector Performances - John Huggins
A deep analysis of UHF connectors performance tests including return Loss of UHF Connectors Mismatch ...

[ Hits: 290 | Votes: 1 | Rating: 8 ]

Noisy Kenwood TM-D710A Microphone - John Huggins
A Kenwood TM D710A microphone Model MC 59 is producing crackling and intermittent poor audio ...

[ Hits: 410 | Votes: 0 | Rating: 0 ]