Hits
Building The Lazy H Antenna
The Lazy H is probably the most elementary form of curtain antennas
post 04 Dec 2024
Antenna Multibands Links →
Cobweb Antenna 20m - 17m - 15 - 12m - 10m
This antenna, I made, not only covers 10-20m but tunes quite well to 40 and 80, has a reasonable swr at 6m! and a good swr from 120mhz to over 150Mhz
CobWebb Antenna for the 14,18,21,24,28 MHz Bands
The Cobwebb is a very practical multi-band antenna my end fed wires need to be changed to cover the 5 bands with a very acceptable performance
Dipole for 20 and 40m bands
By experience, I have noticed that a 20m band dipole antenna must be elevated by at least 8m above ground to perform well
Dipolo a doppia polarizzazione
Nei collegamenti a grande distanza,e' ormai noto la superiore efficienza delle antenne verticali rispetto al dipolo orizzontale
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This antenna, I made, not only covers 10-20m but tunes quite well to 40 and 80, has a reasonable swr at 6m! and a good swr from 120mhz to over 150Mhz
The Cobwebb is a very practical multi-band antenna my end fed wires need to be changed to cover the 5 bands with a very acceptable performance
By experience, I have noticed that a 20m band dipole antenna must be elevated by at least 8m above ground to perform well
Nei collegamenti a grande distanza,e' ormai noto la superiore efficienza delle antenne verticali rispetto al dipolo orizzontale
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62
RF Inductance Calculator Mean diameter of the air core coil, measured from conductor centre to conductor centre include the wire insulation thickness, if any
Voice Recorder Gestito dall'integrato in questione ed offre la possibilità di registrare più messaggi per una durata massima di un minuto con buona fedeltà di riproduzione