Simple band-pass filter for 23cm
The design seems to work well; I tried a prototype with adjustable input taps, and found that the input and output tap positions on the lines were not too important
post 23 Dec 2021
Antenna 23cm 1.2 GHz Links →
Building UHF Yagis A Practical
A detailed photo essay on how he builds his well designed UHF Yagi antennas
Construction of a 23cm double bi-quad antenna
I had half a spool of 2mm enamelled copper wire left over from my 12-turn helix, so this was soon bent into shape to make the element
Construction of a QRP 23cm HB9CV antenna
HB9CV antenna my own 23cm version using brass for the boom and radiating elements
Direttiva Yagi 10 elementi 23cm
Antenna per ATV, in 23cm una semplice yagi a 10 elementi
Double Quad
A description of a 9 dBd double quad and its calculations
58
A detailed photo essay on how he builds his well designed UHF Yagi antennas
I had half a spool of 2mm enamelled copper wire left over from my 12-turn helix, so this was soon bent into shape to make the element
HB9CV antenna my own 23cm version using brass for the boom and radiating elements
Antenna per ATV, in 23cm una semplice yagi a 10 elementi
A description of a 9 dBd double quad and its calculations
Antennas_manufacturers
About Rtty mode
Audio Recording
Amplifiers
Antennas Satellite
Amateur Television ATV
Aprs software
Beacon
Band Plan Ham Radio
Capitals Europe
DX cluster software
Italy provices
Italia-call-ham radio Italy provices Ham Radio Clubs Italy
EME Ham Radio Satellite
Grid Software
Ham shirts
Ham radio Magazine
Log Converter Software
Logs Search Services
Meteor scatter
Microwave
Mac Ham Radio Software
Practice with the soldering
Propagation Solar Cycle
Power Supply
PMR 466Mhz
Packet Radio TNC
PSK31 software
Prefix World
Propagation prediction
Qrp low power
QSL Printing
QRSS Amateur VLF operating
Radio old Museum
Radio portal
Surplus radio
Sstv Photo
SWL Shortwave DX Radio
Telegraph Morse code
VHF Activit
Web SDR