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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

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