So we've built the scaffolding rack. And it's SQUARE! Always difficult to get scaffolding absolutely square and all 90 degrees! Well, I find that. Just a bit of fun chaps, feel free to surf on :) Callum. ... https://www.youtube.com/watch?v=WfdI8jhNhsA
There's a lot of Myths surrounding the whole "Balun" world. Used as a choke, they are not really a balun. But how effective is an Ugly Balun. In some rare cases, they may work but Steve G3TXQ has made an excellent analysis and has some concerns about us generally using them willy-nilly.
Here's his Choke data: http://www.karinya.net/g3txq/chokes/
Background: My name is Callum, callsign M0MCX. The whole DX Commander brand was a bit of an "accident" since I already have 2 x day-jobs (I own a couple of tech companies). Everything I make, I use myself. They were the answer to *my* problems so I made stuff that worked for me. I don't make stuff that doesn't work and although I'm considered not short of a few dollars, I love the idea of making things economical, easy to build and as efficient as you can achieve.
My store is here: https://www.m0mcx.co.uk/store/products/ and I ship (almost) worldwide. Russia seems to be too expensive however EU, USA, Canada and VK land still make my products economical when you include shipping.
Hey. Did you know that you can help the others here by contributing your time to closed caption subtitles here: http://www.youtube.com/timedtext_cs_panel?tab=2&c=UCEWRZEIjVQB8aUkyUQ-g-zA
Enjoy your radio folks. Good luck. Callum. M0MCX.
DX Commander Founder.
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https://www.youtube.com/watch?v=q_Wn9c8HwcA
Some component suppliers have no interest in RF and they can't see the difference betwen a fundamentally flawed component and a working one. Use suppliers that have a genuine interest in the science of RF, not someone trying to seel more rubbish :) Callum.
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https://www.youtube.com/watch?v=5b5VZsYxiDw
Antenna Modelling is a fun part of the hobby all by itself. Modelling your antenna and then understanding a far field plot - and how things might change is a lot easier than going out into the field and seeing for yourself - although I would encourage you to do both! How to use MMANA. Callum, DX Commander.
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https://www.youtube.com/watch?v=dgBcYy6kwWs
Bizarre results on the upper end of HF noticed for this hf vertical antenna. We think it's effectively a grounded capacitor issue forcing very low SWR on 12, 11 and 10m which is also reducing radiation efficiency. See what you think. Callum, M0MCX, DX Commander.
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https://www.youtube.com/watch?v=4K_2nUgXb6E
Fixed by James Hulme from The Shack in Devon. Great engineer, good fun, very economical. Definitely my new Best Friend!
https://www.facebook.com/M1APC/ James's Facebook Page
https://youtu.be/QA-op68t0Ps James's repair and channel
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https://www.youtube.com/watch?v=il03lLSSN3I
Wendy has been busy building the catalogue of goods which I shall model for you - and we have integrated our eCommerce store with a drop shop company so that you benefit from local shipping. Enjoy! 73 from Callum, Wendy and Loki.
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https://www.youtube.com/watch?v=loPI3lnveUw
I know you can buy headsets for a "fiver" but if you are serious, these take some beating. I plugged these into the TS-990s Ham Radio and was quite surprised. NOTE: I have EQ set on my radio for a Heil Headset - there is no doubt I could probably make both mics on show here sound a lot better..! Callum.
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https://www.youtube.com/watch?v=ezrgXEuTL1k
Huge Stream tonight! We had a ball. It's been a while since I told you an embarrasing story. Join me for an hour of fun and games from the bunker. Callum.
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https://www.youtube.com/watch?v=50y01Q-nveU