For me you are easily the best educator on KZread - you really draw out and make theoretical concepts relatable and understandable. I like the way you bring in other people’s knowledge (and well cited/credited) and then explain them further. Thanks again Tim, a real credit to the amateur radio community.

@timg5tm941

Жыл бұрын

That’s very kind Al, thank you 73

This is SUPERB Tim. GREAT job! Far too many hams have become "appliance operators" and forgotten what our previous generation understood as common sense. Please do more videos like this and enlighten those who are willing to listen. 73 OM

@timg5tm941

Жыл бұрын

Thank you! 73

Hi Tim, The efficiency of the antennas has been my concern and the formula you presented are what I wanted to see and understand. So, thank you creating the is series of videos.

@timg5tm941

Жыл бұрын

Thank you for watching them!

Great video Tim, I think you are definitely the mobile ops source here on KZread. Thanks for sharing that knowledge my friend.

@timg5tm941

Жыл бұрын

Thank you Walt! 73

Great work. Looking forward to part 2. Thanks Tim.

@timg5tm941

Жыл бұрын

Thank you James! 73

Hi Tim ... very, very well-sustained and extremely useful information Many thanks for sharing / 73

@timg5tm941

Жыл бұрын

My pleasure Jose, thank you. 73

Very interesting, thanks for doing the homework and boiling it down into an easily consumable presentation. Looking forward to the next one in the series.

@timg5tm941

Жыл бұрын

Appreciate the feedback Stu, 73

A very good video presentation! I am looking forward to seeing videos on the other parts of the subject. Thank you for taking the time to do these videos.

@timg5tm941

Жыл бұрын

Glad it was helpful, 73

Amazing piece of knowledge passed in very digestible way.

@timg5tm941

Жыл бұрын

Thank you that’s very kind!

Thanks, Tim. I always learn a lot from your videos. I'm looking forward to the next.

@timg5tm941

Жыл бұрын

Thank you Mike!

Thanks Tim, as a layman, with little knowledge, but some understanding of Physics, and a later learner in life, of math, knowing the great importance of math, this would have to be one of the best, important Antenna videos on KZread for a very long time. Your ability to make it understood, is greatly appreciated. Thank you.

@timg5tm941

Жыл бұрын

That’s very kind Dennis, thank you!

75M mobile is my favorite mobile band, and I ran a standard stainless 108" CB whip with a base load (tuner in trunk) for years. Yes a few dB down, but it worked great and was indestructible. It really is all about the location of the antenna on the vehicle, especially height and center position, smoothness and size of your ground footprint, and your grounding bond to the vehicle. Using low loss double shielded cable with several beads for decoupling is important for when you are off resonance. These install factors dominate vs the antenna efficiency itself, within the resonant bandwidth. This is why a hamstick in the center of the roof can outperform a bug catcher with a giant top hat in a truck bed.

@timg5tm941

7 ай бұрын

Indeed .. the increase in loss resistance is quite marked when you start to mount the antenna below roof height

Hi Tim, thank you for doing this series on antenna efficiency, I look forward to seeing Part 2. Part 1 confirms what I suspected regarding there being a "sweet spot" for convenience vs length, but I didn't know (specifically) that an 8th wave was only 2.5db down on a quarter wave - which let's be honest, is pretty negligible at the receiving end. This level of detail is really useful, so once again thanks.

@timg5tm941

Жыл бұрын

Thanks!!

Wow... Grape 🍇. I live near w8ji. He runs a 2 meter repeater out of his home, and has a tech session every week. It's like an advanced class that sometimes go right over you, but can be extremely helpful.

@timg5tm941

Жыл бұрын

I’d like to chat with him some day. A very knowledgeable man.

Like that a lot Tim, looking forward to the next. 73 Bob, MØMJA.

@timg5tm941

Жыл бұрын

Thank you Bob!

Nice video Tim, I have been looking at some small compromised antennas for portable handheld ops, great timing. Capacity hat very interesting. Look forward to the next video. Cheers Steve MW0SAW

@timg5tm941

Жыл бұрын

Cheers Steve!

i can't wait for Next Episode

@timg5tm941

Жыл бұрын

Thank you Suhail

Would be great to see a video with the slidewinder again but this time with different slider positions and what bands etc 😊

@timg5tm941

Жыл бұрын

Interesting idea

As someone just starting with HF mobile, topic this is very relevant. I'm currently using monoband hamsticks which appear to be a bigger compromise than expected. Please share links to the research you mention. 73 de W5CMM

@timg5tm941

Жыл бұрын

Will provide more info on the links in future videos 👍

but by adding a hat on a mobile antenna the wind wind resistance a ton.. once you go anything above 20 kph, when you stop the recoil will be dramatic . not only that, while driving the wind resistance with the flexibility of the anten may just rip the antenna off the car I'm assumming a mag mag mount. I'm confused, the wind resistance seems to me will cause many problems. I';m assuming you're driving, the old CB radio days.

@timg5tm941

Жыл бұрын

Yep I addressed wind loading in the video

The more i try to learn the stupider i seem to get

@timg5tm941

7 ай бұрын

Me too!