4CX250B PA Control      4CX250B PA Timing & Control Unit

12v Tube Inverter 1     12V Fluorescent Tube Inverter 1

12v Tube Inverter 2     12V Fluorescent Tube Inverter 2

Battery Zapper          Make this plan to safely recover old battery cells

Bleeper                 Towing and Reversing Beeper

Crystal Set             A Simple Quality Crystal Set

CTCSS                   CTCSS add on project for Duplex FM Transceivers to gain access to repeaters.

Drill Speed Controller  SCR Drill Speed Controller

Dummy Load              Dummy Load project inc circuits.
 
M1BYT Wifi Antenna      M1BYT Wifi Beam Antenna.

Mag Loop Antenna        2Mtr Magnetic Loop Antenna.

Mast Head Pre-Amp       12v Mast Head pre-amplifier.

NiCad                   NiCad battery discharger.

Power Devil             Power Devil Drill Charger.

RF Switching            RF Switch for QRO Linear Amplifier.

SMPSU                   How to modify a cheap SMPSU.

Versatile PSU           Verable Voltage/Amperage PSU.
  
TS520/820               TS-520/820 Series PA Modifications.

VOX Switching           A Simple V.O.X. Circuit