Rugged Phone In Depth Reviews And Comparisons Part 1

AM Radio Transmitter Kit Preparation

Dial and ring tones on the Telephone Exchanges.

Hard drive noise. Maybe someone could advise me to weather this drive is failing?

AM and CQUAM KITS

EMI RFI Ferrite Filter comparison. TDK vs cheaper Amazon filters.

Foscam G2 Poor Audio Fix

How a vintage phone dials numbers and makes and receives calls.

Telephone exchange update. New features.

Phone Testing and diagnosis

Telephone exchange for vintage phones.(room to room calling)

FM to AM high power

New Transmitters

June 27, 2017

Cause and cure of hum on transmitters

Sanyo M7850K AM Stereo Mod

Loop Antenna Demo

Wobble

Transmitter Demos

outdoor tx

Extra range

High power adjustment

Eliminating RF Hum in A.M. Transmitters and Receivers.

cquam complete

AM stereo mod to sanyo boombox!

am stereo latest

AM to FM Car radio version demo

compressor demo deluxe 1

Experimental C-QUAM AM Stereo Transmitter

fm to am converter transmitter. Battery or Mains operated