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How to build a multi-band HF Vertical Antenna – DX Commander Rapide

How to build a multi-band HF Vertical Antenna - DX Commander Rapide

You can build this ham radio antenna – or you can build mine from a kit?! Based on a 7m telescopic pole and will work from 40m through to 2m band. Incredible. Let me know what you think! Cut Chart as follows. Cut your elements this long (in metres – not feet : )

30m 7.99 (includes 2 x 6cm loops and a 1.29m return off the top)
20m 4.95 (all these have a 6cm loop incorporated into this cut chart)
17m 3.85
15m 3.29
12m 2.81
10m 2.50

To clarify: Taking the 10m band for instance, cut your element at 2.50m exactly and fold-back a loop of 6cm which makes the new total length of 2.44m.

Want feet and inches? Just Google "convert 2.81m to feet and inches" (for instance).

Callum, M0MCX, DX Commander.

00:00 Intro
00:57 Parts required
02:38 Tensioning elements
04:25 Longest element – 30m
05:16 SWR Curves
08:24 40m Example
09:14 Modelling multi-band antenna
11:39 Acheving 5/8 on 10m band

#dx commander #rapide #vertical