G3YNH.info  
David W Knight
Ottery St Mary,
Devon, UK.
DWK in his half-dark period

Precision RF bridge
From Transmitter to Antenna:
HF power transmission theory and practice
.
AC theory, Components and Materials, Inductors and Transformers, Impedance matching, RF bridges.

Fixed vacuum capacitor

Coil resonance experiments
Low-pressure gas ionised by the electric field of a resonating inductor. see: coil resonance experiments.

Demodulators and signal rectifiers
Demodulators and
sigal rectifiers
Recent additions
& corrections
Gas discharge tubes
Gas Discharge Tubes,
spark gaps & thyratrons
Frequency display
Digital Frequency
Readout
Valves
Andy Cowley's
Valve Pages

(see also: Introduction)
Nixie tubes
Nixie and other digital indicator tubes.
Workshop
Kenwood TS430s
Commercial radio equipment. Notes & mods.
e-bike e-bike
Pedelec
EAPC
Coverting a bike into an e-bike
SGC230
Using the SGC 230 'Smartuner' in a balanced antenna configuration.
Swimming pool engineering
Racal RA17
Racal RA17:
Receivers,
Adapters, etc.
Optics & Photography
(General and underwater)
Links
Web Links -
Radio & Electronics

Last uploaded: 2018-10-14 (4303 files, 381 MiB)
Neon tube

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