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Affiliated to the
South African Radio League

Copyright © CTARC
2005 - 2021
All rights reserved

From time to time one of our guest speakers makes their prepared work available for distribution to promote knowledge in our hobby. The following files and software are available for download. They have been provided by club members and the CTARC is not responsible for their content.

CTARC Membership Form

Join the CTARC! More about membership here.
Membership Application Form to Join CTARC.

CTARC History

Our club has a proud history, one of the longest-running amateur radio clubs in South Africa.
Here is an ongoing document, updated as new recollections are recorded.

History of the CTARC

The CTARC History Blogspot starts here.

Database to record your shack equipment

Shack Equipment Database

A basic database to keep record of radios and equipment in your shack. Included are a variety of examples to see what can be added.

Instructions for download:
Some browsers don't allow you to download database files as macros are seen as potential virus threats. Thus the .mdb extension has been altered to .md . Once you have downloaded the file, change the extension to .mdb and the program will work in MS Access.

Ham Caching

Instructions & Rules for Ham Caching (similar to GeoCaching)

Yahoo Ham Cache Link

SA Radio Regulations

SA Radio Regulations 2005 Regulation Gazette 8149

SA Radio Regulations 1979 Regulation Gazette 2862

Blank Radio Logbook compiled by John ZS1JNT

Radio Logbook

Batteries & Battery Charging
PPT by Bruce ZS1FX 2009-08-24

Batteries & Battery Charging - Power Point file

Another PDF about Battery Charging and Calculations by Lem ZS1LEM

Short Vertical Antennas
by Klaus ZS1QO 2004-04-26

Intro to constructing efficient Very Short Vertical Antenna


Test Program

Coax Trap software, in zipped format,
described in Ragchew 2006 Sept/October.

Software to calculate Coax traps

QO100 Transponder Output Frequency Calculator/Spreadsheet ZS1PT

A MS Excel spreadsheet to work out where to transmit on the QO100 satellite transponder and where it will output on the other frequency.
Kindly provided by Peter ZS1PT 2020 December

QO100 Spreadsheet