



- Homebrew
items
- BD4066
: a bat detector using 4066 analog switch
- 18T135pp “AinSebaa17”
:
an 18.099MHz CW
QRP transmitter
- 10T639pp “Europa30”
: a 10MHz QRP CW
transmitter using European transistors
- 7T9521
“Komukai40”
: a 7MHz QRP CW transmitter featuring
Class C SEPP power amplifier
- TT2/J : a Janapnese
edition of the famous Tuna Tin 2 transmitter
- 7R3357
“Fujimino40”
: a 7MHz CW receiver featuring
AGC-less superheterodyne
- Shortwave radio accessories : RF attenuator and CW audio filter for SONY, DEGEN and so on.
- Z-match : a compact
antenna tuner for QRP'ers
- Handcraft radio
using toilet paper cores
- Experimental
results
- Archives
- Preserve Spectrum
