Wirral & District Amateur Radio Club
Technical Articles
"How to" Guides,
supplied by
Audio Cables
Anatomy of a Loudspeaker
Cables
Capacitors
Circuit Laws
Fuses
Global Positioning Systems
Guide to Better Soldering
Opto Electronics
Reference Charts
Resistors
Semiconductors
Telecoms & Accessories
Our thanks to Maplin Electronics for permission to reproduce these Guides
Practical
Construction Articles
A
Switched Attenuator for 144MHz DF by Denis, G3UVR
An
RF Sniffer for close up DF on 144MHz by Denis, G3UVR
Build a quality
DL6WU
Long Yagi for 23cms by Chris, M1EEV
Problems
with Regulator Decoupling by Denis, G3UVR
Reference Articles
Colour
Code for wiring RJ45 to Cat5e cable
ElectronicsNotes - Learn about Resistors, Capacitors, Inductors and
much more..
Pin-Outs
for EVERYTHING from PC's/Phones/Video/PDA's
Article - dB or not dB? Everything you wanted to know about dB's
User Articles
Charging a Lead Acid Battery by the
Battery University
Understanding
4m Sporadic E Activity by Denis, G3UVR
Using
IRLP
Gateways by Ian Abel G3ZHI - pdf document
Manuals
Ascom
SE550 70MHz Mk 1
Brief
explanation leaflet - pdf
Ascom SE550 70MHz Mk 3 User Manual by Andy G0BEQ - pdf
Ascom SE550 70MHz Mk 3 Alignment after new eprom by G4KTE - pdf
Ascom SE550 70MHz Mk 3 Battery Back-up for Memory by Andy G0BEQ - pdf
Original Ascom SE550 70MHz Part 1 Description
Original Ascom SE550 70MHz Part 2 Installation
Original Ascom SE550 70MHz Part 3 Functional Description
Original Ascom SE550 70MHz Part 4 Maintenance
Original Ascom SE550 70MHz Part 5 Alignment
Original Ascom SE550 Circuit Diagrams
Original Ascom SE550 Main Circuit Diagrams
Thanks to Andy G0BEQ for use of some of the above files.
Microwave
Modules
MMT
432/144 Transverter Series Manual - pdf
TET Antenna
Data Sheet for HB35C, HB34D, HB35T, HB32/33SP & HB42/43SP - pdf
(Acrobat Reader is FREE if you need it
to read pdf documents)
