radio

• G0RNN's toroidal coil winding helper

• Mercury PTO (permeability tuned oscillator)

• PNP-80

• Signal Injector

• Some information on TOKO RCL inductors and tuneable transformers

• 144 MHz QRSS

• iPod Transmitter

• Using the AD9850 DDS chip with Arduino

• Testing low frequency losses in broadband transformers materials

• Medium Wave Radio - Band Pass Filter

• Medium Wave Radio Project : Active Antenna

• EverReady SkyLeader Resurection & Repair

• Lloytron N2405BK Calypso 2 Band AM/FM Portable Radio Review