RSGB EMF calculator 11c – more antennas

There is a new version of the RSGB EMF calculator, version 11c. The major change is the inclusion of three new antenna types – the Slim Jim, short colinear and end-fed half wave. In addition the three collinear types have typical heights included in the description, which will halp amateurs select the best match for their antenna.

The calculator has had another couple of improvements, with more space for notes about any control measures you put in place and a red flag warning should you enter a TX power that delivers more than 400w PEP to the antenna.

You can download the new version from

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