Technical Pages
Technical Pages
Practical amateur radio reference pages covering aerials, feedlines,
filters, propagation, RF interference, construction projects and
station engineering.
Radio engineering, explained clearly
This section brings together useful technical notes, club reference
pages and practical guides for members who want to understand, build,
test and improve their amateur radio station.
Whether you are new to the hobby or working on a more advanced station,
these pages are here to help with real-world radio problems, from
aerial design and SWR to interference, grounding, filters and propagation.
All Things Aerials
Practical guidance on amateur radio aerials, antenna layout,
tuning, installation and station performance.
Common Mode Currents On Coax
Understand unwanted RF on coax and how ferrites, chokes and layout
can reduce station problems.
Polarization Of Electromagnetic Waves
A clear explanation of vertical, horizontal and circular polarisation
in radio systems.
Band Pass Filters
How band pass filters help reduce interference between stations and
improve multi-band operation.
Frequency
A straightforward guide to frequency, wavelength, radio bands and
how they relate to amateur radio.
How The dB Scale Is Used In Receivers
Learn how decibels are used for signal levels, gain, attenuation
and receiver performance.
Reducing Solar Power Interference
Practical guidance for reducing noise and interference from solar
panels, inverters and power systems.
Copper Wire, Toroids And Transformers
Reference information for wire, ferrite cores, toroids, transformers
and RF construction work.
How To Tune That Tuner
A practical guide to using an ATU correctly and getting a safer
match at the radio end.
SWG / AWG Wire Gauge Chart
A useful wire-size reference for aerial work, coils, transformers
and general construction.
Ground-Wave Propagation
Understand how radio waves travel close to the earth and why
ground conditions matter.
TinyOle Suppression Products / EMI Filters
Information on EMI suppression products, filtering and reducing
unwanted electrical noise.
The Ionosphere
How the ionosphere affects HF radio, skip distance, propagation
paths and changing band conditions.