Category: DX Commander

(Apologies for slight buzz on audio – now fixed) This time I show you how to model a simple Flat-Top Dipole then we convert it to an Inverted V. This is Part 2 of the antenna modeling series. Part 1 here: https://youtu.be/Dxedmw0dfjg

If you have a tree or a spare pole, you can make this. Less than 7m height. But with a COIL for 40m but no 30m element.

Cut your elements this long:

10m 2.65m
12m 3.04m
15m 3.21m
17m 3.81m
20m 4.78
40m 10.03

For every band (not 40m) create a 6cm loop and secure with electrical tape (don’t add 6cm to the cut, just create it after cutting)

40m Region 1 (7.00 to 7.200 MHz) Wrap 14 turns of wire just below the white band on a DX Commander pole (that’s about 24cm up from the base) then continue to the top of the pole and come back down 60cm. This assumes your pole is 6.5m long.

40m Region 2 (say you need 7.200 to 7.300 MHz) then wrap 13 turns of wire just below the white band on the pole (again.. about 24cm up from the base) then continue to top and come back down 130cm. This assumes your pole is 6.5m long

Fine tuning can be made by cutting or adding wire to the fold-back element at the very top. Bear in mind that each turn of the coil is around 220 kHz change. So if your best SWR is at 7.22MHz, removing one turn will centre you at 7.00MHz.

500W for 2-minutes. Well we had to try it! This is the 40m coil option for the DX Commander Rapide. Callum.

This show answers your questions (and some questions you didn’t know you wanted to ask!). Callum.

Decibels (dB) can be slightly confusing. Here is a simple short video explaining. Callum.

5-minute video how to download the software and make your first ground mounted vertical – easy. Callum.

CQ CQ Hello! Can you hear me? Let’s have some fun on HF. I’m calling CQ and looking forward to working your station, enjoying your Live Chat or feel free just to listen in. See if you can hear me 🙂 Using callsign M0XXT (club call). See QRZ for details. 73 Callum.

Here is 4 simple steps you can take to choosing the right coax FOR YOU. Don’t go cheap. Pay as much as you can for the right stuff first time else you will be wasting your money. I explain. Callum.

This is the beginning of the series of videos that will take you from knowing nothing – to an exam pass in just a few sessions. 19 page syllabus here: https://rsgb.services/public/exams/specifications/200731_Syllabus_Foundation_only.pdf – stay tuned for rest of series.

This show follows the Premiere of the Video listed here: https://youtu.be/GEGuTDNqbqE