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A 300W Class D Amplifier for 630m
This circuit for 630m, uses 2 MOSFETs in push pull driven by square-waves from a CMOS D-type flip flop. The power can be varied from around 25 to 300W
post 11 May 2024
Antenna 136KHz Links →
The Loop ATU consists of a capacitive matching network 3 capacitors and a toroidal 4:1 balun. The balun is made using 18 bifilar-wound turns on a 58 mm
La bande 137 kHz
For 137 kHz the coil has about 200 turns of enameled wire
L.F. On-the-air
With UK amateurs having had access to 136kHz for several years, a lot of experience has been gained matching transmitters to a variety of LF antennas
LF Tuning Meter for the 136kHz Band
When adjusting the tuning and matching components of an LF antenna, it is extremely useful, if not essential, to havesome way of indicating the impedance mismatch at the antenna feed point
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For 137 kHz the coil has about 200 turns of enameled wire
With UK amateurs having had access to 136kHz for several years, a lot of experience has been gained matching transmitters to a variety of LF antennas
When adjusting the tuning and matching components of an LF antenna, it is extremely useful, if not essential, to havesome way of indicating the impedance mismatch at the antenna feed point
PSION Greyline Clock PSION Greyline Clock v. 1.0 is a UTC/Local clock showing sunlight/darkness area on the world map
Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica
SunCalc SunCalc - sunrise, sunset, shadow length, solar eclipse, sun position, sun phase, sun height, sun calculator, sun movement, map, sunlight phases, elevation, Photovoltaic