Category: DX Commander

Callum’s Videos

11:00 London Time Friday with Ham Radio

Post author By admin
Post date October 19, 2023

Join me for my weekly Friday Stream. I’m back and looking forward to having some fun. Join in the chat, just listen or see if you can hear me. All in the name of science! Really? LOL! Callum.

DX Commander Youtube

Shortwave and the Problem with Waterfalls in Ham Radio

Post author By admin
Post date October 18, 2023

Have we lost the art of real listening because we rely on technology instead of our ears? I have an idea. 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

DX Commander Youtube

What is a Coax Phasing Line?

Post author By admin
Post date October 15, 2023

In the main, we use phase lines to split power to more than one antenna. By selecting the right lengths of delay / phase lines, we can skew our energy towards our target. Let me explain.
And here’s the calculator link: https://www.va7st.ca/christman.htm

DX Commander Youtube

Please Stop Shouting QRP QRP!

Post author By admin
Post date October 14, 2023

I get that you are low-power, but stop asking me for the sympathy vote. I have a HUGE respect for folks who get through with their regular call.. But I still need your callsign! What do you say? Callum.

DX Commander Youtube

Coax Velocity Factor – Is it Important?

Post author By admin
Post date October 13, 2023

Do we need to know or even understand the velocity factor of a coax line? In the main, no – although very often, velocity factor often follows loss – but that is not the point today. You shouldn’t (normally) have to worry about coax velocity factor. Let me explain. Callum.

DX Commander Youtube

Using Gain-Master CB Antenna on 20m Band

Post author By admin
Post date October 12, 2023

A Gain-Master CB (27MHz) antenna will tune on 15m and 20m – but how well do they work? Let’s find out. More CB Antenna stuff here:

▶️ https://youtu.be/R2QNvcI08hU – An Idea
▶️ https://youtu.be/TiRKGvfeBqw – Making the "contraption"
▶️ https://youtu.be/V8Qq4-0_TjQ – The "HOLY COW" Build

DX Commander Youtube

Do I sell my Kenwood TS-990s and buy Flex 6600M?

Post author By admin
Post date October 9, 2023

I’m confused. I think I’m looking at FT101MP -vs- Flex 6600M. But I need your thoughts. What do you think? C.

DX Commander Youtube

Ham Radio Sunday Special on HF

Post author By admin
Post date October 8, 2023

I’m remote control again from the house, controlling the farm with my TS-990s. Join in, maybe just listen or say something in the live-chat. Your call 🙂 Callum.

DX Commander Youtube

3-Band VERY High Gain HF Antenna (SkyLab Starduster CB antenna style)

Post author By admin
Post date October 8, 2023

I built a massive Hybrid "Antenna-Thing" with huge gain and it beats almost anything you like for 15m, 12m and 10m. You could also run 11m band instead of 12m because the bandwidth is huge. Let’s measure the elements and revisit the performance. Callum. PS More from this series:
▶️ https://youtu.be/R2QNvcI08hU – The original Idea
▶️ https://youtu.be/TiRKGvfeBqw – Making the "contraption"
▶️ https://youtu.be/V8Qq4-0_TjQ – The "HOLY COW" Build

73, Callum, M0MCX. DX Commander.

DX Commander Youtube

Friday Night Ham Radio 40m, 20m and 15m – Join In!

Post author By admin
Post date October 6, 2023

Iceland Trip: Unfortunately Wendy fell ill so we came home.. 🙁