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.
SGC230
 Using the SGC 230 'Smartuner' in a balanced antenna configuration.
Racal RA17
 Racal RA17:
Receivers,
Adapters, etc.
Optics & Photography
(General and underwater)
Swimming pool engineering
e-bike e-bike
Pedelec
EAPC		 Coverting a bike into an e-bike
Links
 Web Links -
Radio & Electronics

Last uploaded: 2018-07-11 (4293 files, 380 MiB)
Neon tube

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