|Range||2000 yards (soil dependent)|
The Power Buzzer-Amplifier utilized earth conduction telegraphy, also known as Telegraphie par Sol (TPS) to communicate. The set used two "earth pins" driven into the ground, preferably more than 100 yards apart and connected to the Power Buzzer-Amplifier by insulated wires.
The Power Buzzer-Amplifier combined the functions of the standard Service Power Buzzer and Amplifier C Mk III with the addition of a six line commutator, a change-over switch, a hot wire ammeter and a folding Morse key.
- Communication by Wireless (SS.141) March 1918
- Notes on Wireless (SS.141) February 1917
- Signal Service (France) Technical Instructions No. 5 Power Buzzer-Amplifier, November 1917
- Wireless Telegraph Communications in the Canadian Corps
- Wireless for the Warrior Compendium 1. Louis Melustee. Emaus, 2009. ISBN 978-90-808277-2-1