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About NDBs Beacons
NDBs or Non-Directional Beacons inhabit 190kHz to about 500kHz, the large majority being between 200 - 430kHz
post 26 Jul 2024
Antennas Receiving Links →
Antenna-attiva-vlf-hf
Di semplicissima esecuzione, non presenta alcun tipo di difficolta' per il suo montaggio
Antenne per la ricezione OL - OM
Dopo svariate prove l'antenna ha davvero le qualita' per essere un buon mezzo di ricezione nella gamma interessata
Active Ferrite Rod Antenna for HF
The red connector is for an optional external antenna wire and the black connector is for a ground wire. The red is wired to secondary winding and the black is connected to the circuit ground plan
Ascoltare i radiofari OL con una antenna filare accordata
Usare uno dei tiranti di acciaio come antenna filare
A Low Cost Loop Antenna
One of the greatest problems encountered when one likes DXing on the lower frequencies such as 1.8 and 3.5/3.8 Mhz is weak signal reception
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Di semplicissima esecuzione, non presenta alcun tipo di difficolta' per il suo montaggio
Dopo svariate prove l'antenna ha davvero le qualita' per essere un buon mezzo di ricezione nella gamma interessata
The red connector is for an optional external antenna wire and the black connector is for a ground wire. The red is wired to secondary winding and the black is connected to the circuit ground plan
Usare uno dei tiranti di acciaio come antenna filare
One of the greatest problems encountered when one likes DXing on the lower frequencies such as 1.8 and 3.5/3.8 Mhz is weak signal reception
Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated