Hits 

Un double dipole 14-21 Mhz


Very simple to manufacture, it is cut for the bands 14 and 21 MHz
post 04 Dec 2024
Un double dipole 14-21 Mhz

Antenna Multibands Links

156



15 Element Wire Log-Periodic 7 MHz - 30MHz TITANEX DLPD-15
Feeding with just a single coax cable for all seven bands 50 hm Loss-free linear loading feeding on 10MHz, full-size rotary dipole on 7MHz

40-10 Meter Antennas
All three dipoles were fed from a single 1:1 balun

6 band windom anten 80-40-20-17-12-10m, TA1CD
Our antenna will serve us for a long time if we isolate these parts from the external environment with hot silicone or similar materials after soldering the connections in honey. We can use our antenna in all hf bands except 160m, 30m and 15m

A dipole portable
Configured as a dipole, the ATX whips appeared not to be long enough.A loaded dipole is more efficient if the loading coil is closer to the top of the antenna

T2FD antenna Tilted Terminated Folded Dipole
FD4 G5RV and Automatic Antenna Tuners


PIC-Keyer

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

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

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