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144 MHz til 27 MHz Converter
The circuit to be described was developed as a simple and effective version of a more complex converter which has been in use at tbe Author's station for the past five years
post 18 Apr 2024
Antennas theory Links →
K9AY 4 Square by Bogdan
After two weeks of hard struggle with this project, it was possible to hear from the band that the model works
La prima antenna
La prima antenna si deve attribuire al fisico tedesco Heinrich Hertz
Longwave Information Details of my 136 kHz station
Umbrella-Antenna It consists of a 18m vertical telescopic fibre glas mast height depends on the wind condictions, four top-load wires, each about 15 to 20m long at a relatively steep angle
Measuring SWR
SWR standing wave ratio) is a measurement of how efficiently your antenna system will radiate the power available from your radio
MFJ-269 Review
After my review of my MFJ-207 Peter VK2TPM offered me his MFJ-269 to play with for comparison
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After two weeks of hard struggle with this project, it was possible to hear from the band that the model works
La prima antenna si deve attribuire al fisico tedesco Heinrich Hertz
Umbrella-Antenna It consists of a 18m vertical telescopic fibre glas mast height depends on the wind condictions, four top-load wires, each about 15 to 20m long at a relatively steep angle
SWR standing wave ratio) is a measurement of how efficiently your antenna system will radiate the power available from your radio
After my review of my MFJ-207 Peter VK2TPM offered me his MFJ-269 to play with for comparison
Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal