The antenna almost repeat the design of the Car Antenna however instead of aluminum tubes it was used copper wire in plastic insulation in diameter of 2- mm (12 AWG).
A multiband shortened fan dipole. This page offers and online calculator that can be really useful if you plan to homebrew a multiband dipole for low HF bands and you don’t have all needed space for the full lenght. It combines multiband dipole with loading coild for selected bands.
The simple balcony vertical HF antenna made with plastic fishing pole. Just along the pole I install copper wire in 7 meter length. Then was installed ATU. It was used home brew tuner. For each band was used one counterpoise in length 0.8 x lambda/4
A WSPR beacon project based on Arduino nano (atmega328P) based microcontroller
The PCB can produce a High Frequency RF signal in the range of 1MHz to 12.5MHz using an AD9833 Direct Digital Sequence (DDS) frequency synthesizer. The signal can be modulated with different Weak Signal modes such as WSPR, JT9 and JT65 using our Arduino 5V/16MHz Pro Micro software.
PLL synthesized 70cm CW beacon exciter. The exciter is built arround a slightly more advanced ADF-4351 single chip PLL synthesizer rather then (among amateurs) more popular Si-570 or Si-5351 integrated circuits. The exciter is capable of providing up to 250 mW of RF output power,
An article about how to operate repeaters. How to call someone on a repeater, how to program your HT Radio setting the correct offset, setting tones, and several information on etiquette, lingo, abreviations and codes
Devils Tower Amateur Radio Club serves Crook County, Wyoming and the surrounding area. Monthly meetings at The Sunny Divide Community Hall.