CVARS WA7UHD  

   CVARS  –   WA7UHD
  The Chehalis Valley
 Amateur Radio Society
A  501(c)(3) Non-profit

     ARRL special service club
 
 

Electronics Workshop - May 28, 2020

Time & Location:

Topics:
  1. "LDG Basic Tuners" Ad - QST, June 2020, pg. 6
    1. Pi Network
    2. T-Match
    3. Balanced
    4. Switched-L
  2. "Where to Use LDG Baluns & Ununs" Ad - QST, July 2019, pg. 6
    1. 1/2 Wave Dipole
    2. Lader Line or Twin Lead
    3. Vertical with Ground Plane or Radials
    4. End Fed Wire
  3. "LDG Wire Antenna Kits with Baluns & Ununs" Ad - Nuts & Volts, Issue 6 2019, pg. 98
    1. 40 meter Dipole
    2. G5RV
    3. Off Center Fed Windham
    4. End Fed Long Wire

Notes:
Switched-L Tuner Characteristics:
Input Output Impedance
Element Series Element Transform Filtering
to Ground  Element  to Ground      Type          Type    
Capacitor Inductor  -   -   -   - Step Up Low Pass
 -   -   -   - Inductor Capacitor Step Down Low Pass
Inductor Capacitor  -   -   -   - Step Up High Pass
 -   -   -   - Capacitor Inductor Step Down High Pass
Reference: www.electronics-notes.com/articles/antennas-propagation/antenna-tuning-tuner-unit/what-is-an-atu-basics.php

1/2-Wave End Fed: electronics-notes.com/articles/antennas-propagation/end-fed-wire-antenna/end-fed-long-wire-antenna-basics.php
Random Length End Fed: www.youtube.com/watch?v=0zF7bDoqkG4Radio Prepper on youTube

Ferrite Torroids: FT-xxx-yyy
Powered Iron Torroids: Txxx-yyy
where: xxx=100*Ooutside diameter in inches
    and: yyy=material mix

Updated 05/29/2020.    Email webmaster.      Facebook Link