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Antenna Theory and Design
LPAM antennas are more difficult to construct than their LPFM cousins. Firstly, they have to be longer. Secondly, they have to be vertical to work well which becomes an issue if the antenna is longer) Thirdly, they need to have rather long ground radials for the same reason
post 14 Sep 2024
Projects_Homebrew Links →
Simple electronic keyer
This circuit in figures 1a and 1b is a simple keyer which can be built
Simple Noise Generator
As a signal source I thought about noise because we knew from school that all frequencies were present
Keyer ETM-5C Elektronik
The electronics should no menus and double occupied
Building A High Voltage
I stumbled on an article by a german ham and materials engineer
Installing long wire antenna
Installing a long wire antenna when the only best way is to attach one end to a tree
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This circuit in figures 1a and 1b is a simple keyer which can be built
As a signal source I thought about noise because we knew from school that all frequencies were present
The electronics should no menus and double occupied
I stumbled on an article by a german ham and materials engineer
Installing a long wire antenna when the only best way is to attach one end to a tree
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