| AM radio receiver |
AM radio receiver. |
| Antenna BIG-J for 145 MHz (2m) |
Big J antenna, gains of J antennas and a few more pieces of information. |
| Antenna J for 440 MHz (70cm) |
J antenna, very simple, for 440 MHz (70cm). |
| Antenna for 7 to 30 MHz |
Antenna for 7 to 30 MHz. |
| CW transmitter 250mW and 3W linear PA for 7 MHz |
CW transmitter and linear power amplifier for 7 MHz. |
| Cordless phone receiver v2 |
Receiver for cordless telephones with a chip from a cordless phone. |
| Crystal radio receiver v2 |
Radio receiver without power supply. |
| DTMF RF remote |
DTMF remote over radio waves. |
| Extra mini FM spy bug on 1.5V |
Yet another FM spy bug (but better) 88-109.5 MHz. |
| FM bug 3x |
Three FM bugs on 3V and 9V. |
| FM bug v5 |
Ekstra small spy bug. |
| FM bug v6 |
Great FM bug, small dimensions. Works at 3V! |
| FM receiver |
Mini FM receiver with TDA7000 IC. |
| FM transmitter 15W with EL34 |
FM transmitter with EL34 tube or PL504 tube, 15W of RF power. |
| FM transmitter 200mW |
FM transmitter 200mW. |
| FM transmitter 3W |
3W FM transmitter 88-108 MHz. |
| GSM sniffer |
Locate a GSM phone. |
| Linear power amplifier for 433 MHz |
Linear power amplifier for 433 MHz with two transistors. |
| Nice FM bug |
FM transmitter - bug. |
| RDS decoder |
RDS signal decoder. |
