Crawley Amateur Radio Club

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Newsletter Archive

Our Newsletter Archive is a selection of articles extracted from previous issues of the CARC newsletter. We hope you will find them both informative and useful. All material is the copyright of the respective authors. Reproduction in any form is strictly forbidden without the consent of the author.

How Short Is Short?
Coax Connections At VHF/UHF - G3GRO
The surface wave transmission line - By Stewart G3YSX
Receiver Bandpass Checking
The use of a noise generator to directly check the filter characteristics of a receiver - by Stewart G3YSX
Antenna Jottings by G3JKF
Not to be defeated by the ‘plague’ of the Local Council Planners, Ken set to, and has developed a very powerful, effective and novel alternative antenna system in his attic.
OSCAR 40
An excellent primer on communication through the latest amateur satellite to take to the skies - by Jerry G0FPI
24cm ATV Walk - About Hat Aerial
A novel approach from John G8MNY
A stereo filter by G4BWE
which produces, from the speaker jack socket, a quasi-stereo output from a mono input signal
Modifying the Z Match ATU for Top Band
A neat solution to save the need for a separate 160m ATU and all the switching and unplugging that this entails.
Methods Of Interference Suppression
Evaluation Of Receiving Loops Etc. And The MFJ 1025 Signal Canceller
Derek Atter G3GRO
A Simple Signal Canceller For 136Khz
To Combat Loran or Other Noise Sources The poor man’s MFJ 1025 Signal Canceller Unit by Derek Atter G3GRO
Approach and Landing
The fascinating history of the development of aircraft landing systems from the very beginning to the present day by Brian Kendal G3GDU
23 cms ATV SWR/POWER Meter - G3KAU
A Quantative Comparison Of Two HF Antennas
By Mike G0VYN, Lech G3KAU, and Derek G3GRO
Fun and Games with the G3LZH Miniature Loop Antenna
Peter G4FYY QRP DX With a little bit of bent wire. Could this possibly be true, or was it ‘Black Magic’? Read and believe!!
A Stripline 250mW RF Output Driver Amplifier For 23cm Microwave ATV
From Derek G3GRO
Optimisation Of The “Double - 8” Antenna Design For 23cms
Derek G3GRO
A Simple Antenna Analyser
Ridiculously simple actually, from G3KAU
Use of Telephone Tone Pad in Two-tone Testing
An ingenious and elegant alternative to the time honored method of shouting "wharlo" into the microphone to tune up an SSB transceiver.
Modifications to a Philips broadcast receiver
For use on top band using an old type Philips push button car radio!
LF at G3KAU
Getting up and running on 73/163 kHz Some of the problems and solutions encoumtered with illustrations.
A Box Too Far
Brian G3GDU and Derek G3GRO reproduce a navigational system used by the Luftwaffe in the early 1940s to bomb the United Kingdom, using nothing more than equipment from the shack.

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