dxcommander

I wonder what disaster will unfold today. So far we've had internet dropping out, totally flat or dead conditions, computer failures and more! Join in and find out :) Callum.

Talking to the expert - Mastrant LIVE. Ropes and guys can be difficult to understand. Many solutions to even more problems. Sounds simple right? Let us find out. More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training PS - I use StreamYard for these livestreams. Try it for free! And save $10 if you want the HD version with no StreamYard branding version - remember to use this link for the offer: https://streamyard.com/pal/6370377447243776

QRP Special: Tom walked around the Isle of Arran last year, camping each night with his IC-705 and DX Commander Expedition antenna. A most incredible QRP /P experience. Around 70 miles in 7 days. MUST WATCH. All footage and pictures downloaded from his channel and blog (with permission) with added QSO footage from my end - I recorded each of our contacts every day from the factory at DX Commander HQ. See all of Tom's videos here: ▶️ https://www.youtube.com/@M0RMY/videos And Tom's blog where he discusses all the gear he uses here: https://www.walking-and-talking.uk/ More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

Apologies to my USA friends, we're a bit early today.. Wendy and I need to get out and sort some shopping for Easter, so we'll do a 10:00 until 12:00 (ish). Hopefully that works for you.. Listen in, join the chat or call me on the radio! 73 Callum.

Simple to follow, 3 basic rules; length, numbers and location. Ham Radio does not have to be complicated. In this video, I bring the topic of ground mounted radials for vertical antennas down to an easy-to-follow theory. Enjoy. And please contribute to the discussion. 73 Callum. More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

Shortwave listening is alive and well. From decoding digital tones, listening to broadcast stations or amateur transmissions - all can be a lot of fun. I have made a number of different dedicated receive antennas but these are the very simple versions I recommend that cost very littloe (even free with scrap wire) and can be built from scrap. Callum. Here are the links I discussed ▶️ https://youtu.be/QVKaeSbYcc8 - Big Loop ▶️ https://youtu.be/jDcaltDUKnI - Small Loop On Ground ▶️ https://youtu.be/z5MhYu2LUrY Comparison between the two More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

Incredible! The BIG Brother to the TS-990s, this has 3 x VFOs, up to 4 external 4k displays with optional GPU, runs either WIndows or Linux, HF/6m and 2m (and 70cms with external transverter). Just wow! 73. Callum.

This is my weekly live ham radio Friday. We are kicking off at 12:00 GMT (12.00 UTC). I realise this is a bit early for USA - sorry! 73, Callum.

I'm just interested in the propogation later at night. Hoping I can bag some USA on 40m and 80m. Guess we'll find out!

Let us discuss why the length of a coax jumper or patch lead should be worry-free. Buy the best you can and just leave it! Callum. More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

I have asked Roly ZL1BQD, a prolific DXpeditioner to come and talk to about everything DXpedition, from the 1-man DX Island hopper through to the multi-person rare DX entity full expedition. What are the problems, what goes wrong.. PS - I use StreamYard for these livestreams. Try it for free! And save $10 if you want the HD version with no StreamYard branding version - remember to use this link for the offer: https://streamyard.com/pal/6370377447243776

In this video, I explain how I'm going to change my VERY long wire into a Beverage. Then we'll look at how this works, what parts I have bought for the project and what results I'm expecting to achieve. I also discuss the difference between a regular Beverage - say 2m or 6 ft off the ground and one that is physcally ON the ground, pinned to the grass with radial pins. More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

Ham Radio Special - we look at the benefit to YOU working split (5-up) and how to operate in that environment. We look at what does 5-up mean, what does 5-10 up mean and who are the band-police? LOL Callum. More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

How many countries can we get to? Can you hear me? Let's find out. Join in, listen or chat. This is my regular 12:00 UTC Friday slot. Callum.

The placement of a coil on an element affects the third harmonic. If you can work out exactly where to put this coil, we can then force a harmonic on almost any band you like. In this example we have made a compact 40m antenna of only 6.5m long and then made 20m to work on the third harmonic with very little loss. See what you think. Callum. https://youtu.be/uNqA6dy6cbY - Last Video Discussing this Concept https://youtu.be/L9HX7352ukw - End Effect Discussion https://youtu.be/V8Qq4-0_TjQ - The Custom Hybrid SkyLab https://youtube.com/live/x-za2pjmNjE - Live Stream where I Switched Between

We destroyed an 80 feet tower in 5 seconds. But the 60 foot version worked GREAT! Full parts list for my home-brew 60 feet tower made from scaffolding poles, connectors and poly rope detailed in this video - and also below. TAKE CARE because if anything goes wrong, you are into an extremely serious accident. You will need: - 4 x alloy poles (optionally one in steel) - About 1,000 feet (330m) poly rope (lorry rope) - Some sort of tilt-hinge (I have made a couple of these on this channel) - 3 x straight scaffolding connectors - 1 cross joiner (for just above the tilt mechanism) - 2 hinged connectors (if you wanted to make the crossbar) - At least 4 large guy points (you can home brew from angle iron) - Selection of 6mm / 1/4 inch bolts to tap the poles for guy points - at least 3 x 4-way guy points for the scaffolding poles - Steel carabiners with a decent high rating - Hard hat (seriously!) - Know how to tie knots! More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

This is my regular ham radio Friday session, live from Warwickshire. Today I fancy switching between an experimental antenna and the Signature 12.4. Join in the live chat, see if you can hear me or just listen in. Callum.

This is the 40m / 20m special design I'm testing out. It's 6.5m lonf (only) and has a 35uH coil at around 5.5m. Resonates on 20m and 40m. Let's try it out! Callum.

Are you wondering why your antenna is shorter than it should be? In this video, we'll explore the concepts of end effect, velocity factor, and height above ground and how these affect the electrical length of an antenna. First, we'll explain how end-effect shortens the electrical length of your antenna and how it can be compensated by adjusting the length of the radiator. We'll also discuss how velocity factor affects the propagation speed of electromagnetic waves and how it can vary depending on the type of coating or material. Then, we'll dive into why height above ground affects the tune of an antenna. Whether you're a beginner or an experienced ham radio operator, this video will provide valuable insights why adjustiung your antenna can be slightlly "weird" sometimes! Stay tuned and let's dive into the world of antennas! Callum. More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

Is it true that coax needs to be 18 feet - or multiples of 18 feet for your CB Radio? I'm going to address the myth about specific lengths of coax that some CB operators believe will magically match their antenna to their radio. We'll explain why the impedance along the coax varies with frequency and length, and how a mismatch can cause losses and affect the SWR of your system. We'll also give practical advice on how to properly match your antenna to your radio and minimize losses. Callum.

Loft / Attic Home-Brew CB antennas. Three Rules: Needs to be compact, easy on the wallet (cheap!) and easy to construct and understand. I have built loft / attic antennas, both verticals and dipoles for 11m (10m actually) with varing success. Other ideas are Delta Loops, horizontal loops and also remember commercial mobile antennas can ideal for lofts and attics - you will need a bit of a ground plane though. Chicken wire or just regular wire can assist. Beware that loft antennas can sometimes sound noisy because they will be directly above all the electrics in the house. However, they are still cheap and fun to make. Good luck, Callum. https://youtu.be/V8Qq4-0_TjQ - Tribander SkyLab Tribander https://youtu.be/xfX_8rogur8 - Delta Loops

I wonder if you can hear me? Join in the chat, listen in - or see if you can hear what I can hear? All for fun and games on Sunday. 73, Callum.

I explore how I re-designed the CB / 11m SkyLab StarDuster and made a 15m / 12m and 10m high-gain powerhouse using the technique of off-centre-feeding, I show how I unlocked three-band performance from a single element. Discover how shared radials and element placement can make all the difference for any ham radio setup. Join me as I dive into the science behind off-centre-feeding and learn how to transform your antenna into a multi-band special! Don't miss this exciting episode :) More from this series https://youtu.be/R2QNvcI08hU - The Design https://youtu.be/V8Qq4-0_TjQ - The Build More Videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

Unlocking the secrets of walkie talkie and HT range testing with my latest video. Discover why these devices are mosttly reliable at under 500 metres, and how factors like a clear line of sight as well as elevation (say on a hilltop) can increase or degrade performance. Join us as we examine the science behind walkie talkie antenna gain, and see some real-time software modeling of range on a real map. Featuring (Retevis RB639) - here's Fred's video: https://youtu.be/jJCW5Y8XzgE Experience tells us that walkie talkies are mostly reliable at around 500 metres. However, sometimes you can get a greater range, for instance if you are in the clear or on top of a hill. We look at why this is, the software used to check the gain and we can even model the range over a live map. Tune in to understand. The supplier tells me there is a deal here.. Here they are: 2 Pcs: https://www.amazon.co.uk/dp/B0BDR5XG63?maas=maas_adg_BE6878F5B1A200D1F6BECE0066CE7910_afap_abs&ref_=aa_maas&tag=maas 4 Pcs: https://www.amazon.co.uk/dp/B0BDR7B4CV?maas=maas_adg_859E1348AA707250CD6165B81C07E077_afap_abs&ref_=aa_maas&tag=maas 10 Pcs: https://www.amazon.co.uk/dp/B0BDR8HQSJ?maas=maas_adg_AB6D41AF606952928FA229BAD8B32693_afap_abs&ref_=aa_maas&tag=maas More videos: ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7zFt6NV9fnnde2lP11fUTQ8 Antenna Modelling ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xtKohJRipVLQ6rxYzRP8eq Tips and Tricks ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xwhA0Msm_bNT4CQ_Bj5D4c Antennas ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7wc6svNLY7IDthw1YCFNq9W Live Streams ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7w9dp9Eqg_UhamrY5Ck3dyX My Stuff ▶️ https://youtube.com/playlist?list=PLcC64tNkZB7xvc3rHlpqqCkiBdAzYe8cf Ham Radio Training

Today, I made some new radials and moved the Signature 9 antenna from its temporary tilt-over mast to its new home on the ground post. Slight tune required on some of the ham radio bands required due to the different ground conditions (100m wire -vs- 350m of wire radials for Signature 12.4). I will cover that in the user guide, don't worry about it. But what do you think? Looks nice, eh? Callum.