The website now has a Tools section: 50 calculators, antenna designers and quick references for the shack and the field, all on one page. Find it under Tools in the menu.
- RF and electronics: Ohm’s law, SWR, dBm and watts, reactance, colour codes and more.
- Antenna design: dipoles, end-feds, verticals, J-poles, loops, Yagis and quads, with cut-and-trim lengths and drawings.
- Maps and grid squares: locators, distance and beam heading.
- Station and logging: feedline loss, link budgets, filters, coils, battery and solar planning, and a logbook with ADIF export.
- Propagation and satellites: band-by-hour predictions, the grey line and satellite passes.
- Operating references: Q codes, phonetics, CTCSS and DCS tones, band plans, a Morse trainer and more.
Pick a tool from the list on the left; on a phone, tap All tools. Switch between metric and imperial at the top. Anything you save, such as designs or your log, stays on your own device.
Have a look at www.zs6tj-club.co.za/tools and tell us in the forum what you think.