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Come riattivare una valvola nuova surplus
Dare tensione al solo filamento Ufil per almeno 12 ore
post 19 Sep 2024
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Automatic SWR and power meter
The display unit is awesome; Above all, the possibility of being able to assess the mean and PEP performance when the time constant is changing comes to my mind
Building a Coaxial Collinear Antenna
The Coaxial Collinear is rarely mentioned, It's design is super simple and since it needs no radials, it takes up little horizontal space its weight is negligible
Cobwebb revealed
The main advantages of the CobWebb over other 5 band 14 to 28 MHz antennas are that it is small, lightweight, strong madefrom fibre glass, only requires a single suppor needs no rotator
CTHA Antenna
Not having found any clear information about how design a CTHA for a specific band I decided to build one using the materials available in the shack just to investigate its behaviour
Build a Saltwater Dummy Load
Here is a simple solution the saltwater dummy load
170
The display unit is awesome; Above all, the possibility of being able to assess the mean and PEP performance when the time constant is changing comes to my mind
The Coaxial Collinear is rarely mentioned, It's design is super simple and since it needs no radials, it takes up little horizontal space its weight is negligible
The main advantages of the CobWebb over other 5 band 14 to 28 MHz antennas are that it is small, lightweight, strong madefrom fibre glass, only requires a single suppor needs no rotator
Not having found any clear information about how design a CTHA for a specific band I decided to build one using the materials available in the shack just to investigate its behaviour
Here is a simple solution the saltwater dummy load
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62
Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica
Conrad Electronic Electronic components online shop in German and Italian