Measuring Coaxial Cable Losses @ HF, VHF, and UHF frequencies.

Great info. I was aware that cheaper coax had issues but never thought it was so severe in UHF/VHF.

Great video and info. Thanks Mike!

Hi Mike! Thanks for this very usefull video. I work mostly portable on 20m with symmetric dipoles, so I do not lose much energy in my cable.

Good stuff - an instant basic education of the ground rules of efficient installation in one vid - invaluable for a newbie like me still studying for his foundation/technician licence. Thanks.

Great video Mike. You posed the problem well and then let the data speak for itself. BTW, I read in one of the comments where a "balanced line" is compared to "coax feedline". That's sorta what I'm doing now a days. I'm using 50' of RG-8X coax on the WRC TIA 1000 and comparing it to a homebrew 40m speakerwire-dipole. Interesting stuff.

Nice job helping us to understand the losses involved. Kind of surprising to me. Thank you.

Very helpful - thank you for making this!

Great comparisons Mike! I really should upgrade my coax after seeing these results. 😂

This was a great topic as I am currently building a tower out in the cornfield behind my house about a 300Ft run. After calculating all the losses I was loosing close to 3Kw with LMR600 so I decided to upgrade to 7/8in HELIAX and the losses are now at 1.2KW. @27.400Mhz

Thanks for doing this. I have read countless articles but have never seen a video of it actually being tested. I think I am going to buy MUCH better coax the next time I need it.

Great Show. and you showed your results which hardly anyone does and they expect you to believe them. Thank you very much. I am Inspired now... 73.

Another great video! I have been running LMR400 for my LTE antennas running up to 1700 MHz. Love the bend radius though.

Thanks for another great video Mike!

Good video. To double your range (same RX'ed power/voltage) you have to have 4 times the TX power (not 2 times), but that only applies to direct line-of-sight comms. Normally the limiting factor will be the terrain (big lumps of dirt and rock getting in the way etc), in which case more TX power doesn't always help so much.

Not that it'll do any good, but thanks for bringing the topic of loss up ! I have a friend that is sold on the free end spools of aluminum jacket coated Cable TV hardline ! After having a new Duel Band Omni placed on top of his tower, I ask him if he had the tower climber check the power squirting out the end, and I suggested it likely wasn't what he thought it to be ! Which began this back and forth between us. I tried to explain that right from the jump, there is a mismatch from the 50 ohm components in the circuit, to the 75 ohm feedline ! Ending a best 1.5: 1 SWR ! Not that it is terrible, but he presumed 50 watts in, 50 watts out ! Granted the loses may be minimal, depending on one, the length of the run, and the frequency of interest, etc. etc. !!! I got a real eye opener, when I decided to dip my toes into GMRS ! Obviously a few Mhz. North of the Amateurs UHF Band ! Where I was made quickly aware of the losses there, and the burden of cost, to try and beat those losses ! Where I discovered anything short of the diameter of a Fire hose, falls short ! Miserable.....!

Phenomenal ♡♡♡ This is exactly what I needed right now :) 🤜🏻👍🤛🏻

Simple but effective demo.

Great video! Thanks!

Great visual Mike!!!

Very good. Thanks a lot.👍☘️