The YouTubers BunchCallum’s Videos
13:00 Local (12:00 UTC), Saturday 20th April for 2-hours. The UK Crew are running a Mega-Stream called "10 on 10". Get out in your car or fire up your Antron 99 / Imax 2000 or GainMaster and find us. Our frequencies will all be on Station Master and on our screens so you will be able to find at least one of us. DX is welcome, see if yoiu can hear us. Have fun and see you later! Callum.
In this video we look at how radio signals propagate, whether that be line of sight, reflection, defraction and refraction through the Ionosphere. We discuss the difference between HF (shortwave) and VHF / UHF. We also discuss Sporadic E and how that can also affect some HF signals and VHF signals mostly in the summer months.
This video is part of the Foundation Series and is suitable for Foundation Students for Ham Radio as well as anyone else interested in how radio signals propagate.
Callum.
I am about to install a Multi-Band loop which will be resonant on 40m, 20m, 15m and 10m. It needs a 4:1 balun – but other than this balun, this is cheap to build and is well within the possibilities of many small ham radio stations. It will give me some TX *and* RX gain on the higher bands and it will also be a lovely TX / RX antenna during the day for NVIS 40m.
Check Chapter Markers in Description for all topics covered in this video.. but this is all my tips which are worth watching for any antenna builder since we cover everything necessary including joining wire, radial numbers, tuning etc. Callum.
Links:
https://youtu.be/nbBp42bbELo 00:36 Build Video Expedition Link
https://youtu.be/QuFSCHROuIg 01:57 Mirko’s Video
https://youtu.be/L1gBWIWGB_Y Gluing Telescopic Pole
https://youtu.be/95k4tlYviR4 Radials
https://youtu.be/pqStNqDA5V4 9:10 Will It Work
https://youtu.be/9fT8N0jWO5A Knots
https://youtu.be/2sJkPpaNseE 14:37 Tuning SWR
00:00 Intro
1:04 User Guide Starts
1:30 Flat Roofs
2:04 Ground Post Installation
2:50 Telescopic Pole
3:25 EzClamps
3:45 Alloy Bases for Classic Series
4:50 Gluing Telescopic Pole
5:07 Test Pole and Guying 12 and 18
6:55 Making Elements
8:18 Making and Deploying Radials
10:40 Making Element Foldbacks
11:20 Stopper Knots
11:52 Element Placement
12:37 Tension Loops
14:06 SWR
14:45 Expedition Tips
16:00 Rapide
16:36 Classic
17:16 Signature 9
18:05 Signature 12
20:11 Signature 18
20:42 Joining Antenna Wire
23:00 Protecting Elements
23:14 Tensioning Guys
24:05 Stuck Telescopic Pole
25:08 SWR tips
25:45 QRO
26:34 Radial Wire / Chicken Wire
26:58 Wind Survival
Baluns and Chokes come in all sorts of sizes. They are often attached to coax feedlines. Why do we need them and what do they do?
Videos discussed in this video:
https://youtu.be/Cico04Gh9AU Radiation Patterns
https://youtu.be/b9UUClfItrs 7 Antennas
https://youtu.be/CZf-dwWIUDo Mike and Callum’s 1-day build
Usual Friday fun – with a slight twist.. 73 Callum.
Link that I mention: https://raffall.com/356015/enter-raffle-to-win-dxc-expedition-hosted-by-callum-mccormick
A bit of fun with Sean here. How did you get into Ham Radio and what is your first Radio memory? Let’s go! Callum.
Jim always comments to my videos, he even joins my live-streams. But Jim isn’t very well.
https://www.paypal.com/donate/?hosted_button_id=F559TA6NT8QRU Link to PayPal
https://www.buymeacoffee.com/hamcq73c Buy Jim a Coffee
https://www.youtube.com/@ham-radio – Subscribe to Jim!
Incredible Breakthrough! Infinite Variable Velocity Factor means NO TUNING any more. SWR will be a thing of the past! The VF follows the wavelength in a linear fashion. Quite remarkable! What do you think?
This short video explains what a dummy load is, and what we use them for. Callum.