Ron Payne, WA6YOU, a nationally recognized expert in building coax interconnects and antennas, demonstrates how to build quick and easy Ground Plane (GP) UHF/VHF antenna.
Ron demonstrates how to calculate length of the antenna elements, prepare copper wire for soldering, put the antenna together, and tune and measure it.
At the end of this short presentation he ends up with a perfectly tuned antenna for the 70cm HAM radio band.
Other interesting presentations Ron gave at the Club's meetings:
The Antenna Analyzer: Applications in Amateur Radio: • The Antenna Analyzer: ...
Coax Cable and Connectors - The Timorous Art of Terminations: • Coax Cable and Connect...
How to use an antenna analyzer: • How to use an antenna ...
How to use an antenna analyzer: • The Tools of Soldering
The Dipole - Basics: • The Dipole
The Dipole - Advanced Lecture: • The Dipole Expanded ...
00:00 Introduction
05:01 UHF/VHF antenna examples
05:25 Handie-talkie (HT) radios and their dummy load on a stick (rubber-duckie)
06:32 Carrying HT on a belt
07:22 Tiger-tail - the other half of the antenna
09:14 Mobile antennas
11:32 Field expedient antenna construction
11:50 Always use silver-plated connectors
12:44 Ground plane antenna formulas (with magic numbers for imperial units)
13:23 Radials are always 10% longer
14:36 Will adding more radials help?
14:52 Ground planes love symmetry
15:51 Straightening and hardening copper wire
19:02 Cutting the wires for the antenna
19:42 Preparing wires for soldering
20:34 Soldering iron for field work
21:52 Dealing with smoke
22:50 Soldering the radiator
23:06 Flux: RMA186
25:17 Preparation of radials
25:58 What kind of solder do you use?
27:30 Soldering radials
29:52 Tuning the antenna
31:51 Measuring the antenna
33:07 Radials slope angle
34:36 Antenna bandwidth
37:46 Ron's favorite SWR analyzer
38:22 Field expedient 4-element Yagi-Uda
40:13 Other presentations worth watching
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