How High Should a Dipole Be? A Look at Antenna Modeling (#100)

How high should a dipole be? What happens if it’s too low or too high? We turn to EZNEC antenna modeling software to see that the old rule of thumb of one half wavelength is correct. But there are lots of things going on! Learn about modeling and dipoles in this video.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | Leave a comment

The Coax Connection: Interview about bad coax with Ray Nelson, N1MPD (#97)

My second interview with coax expert Ray Nelson, N1MPD, covers how coax can go bad, primarily due to water entry. We talk about the proper method of waterproofing coax connections, and how to spot the poor quality coax that masquerades as the good stuff. MPDdigital is at www.mpddigital.us.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | 1 Comment

J-38

For Tom Medlin’s show by KEØOG

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | Leave a comment

Review of CyberLink PowerDirector v16 (new release) #98

Description – PowerDirector15 http://goo.gl/FLPbnK. Here’s an out-of-cycle video describing the video editor I rely on heavily in the production of the Ham Radio Answers and Ask Dave videos, as well as the Tech, General, and Amateur Extra training videos. Note: I am a CyberLink “Most Valued Professional” and they provided this $100 product to me for free, as they have for the past several years. My next ham radio video will be on Wednesday as usual.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Product Reviews | Leave a comment

Rigol DG1022Z Arbitrary Function Generator (AD #94)

My new Rigol DG1024Z Arbitrary Function Generator, or more normally, a signal generator, looks like a great addition to my test equipment. Caveat: this is not sponsored. I paid for it using tips, and I intend to use it to make videos for you to watch. It provides sine waves and other functions up to 25 MHz. You’ll see this more in upcoming videos. If you purchase this using the following link, it won’t change your price, but a small amount will support my Ham Radio Answers channel http://amzn.to/2xnjeY9.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | Leave a comment

Review of Pracomm SML-1000-1 HF Loop Antenna (# 95)

Roberto Arranaga, KX4CY, felt that commercial small HF loops were too expensive, so he’s made his own for sale at www.pracomm.store which has an interesting tuning method using a wide range tuner (such as the MFJs). I tried it and it works! And the price is right, too, at US$199 (introductory) plus S&H.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Product Reviews | Leave a comment

Exploring the Yagi, Log Periodic, and Phased Array Antennas (#92)

Discusses the difference between Yagi antennas, log periodic antennas, and phased array antennas. Also, I’ve picked up a sponsor, JLC Printed Circuit Boards, www.jlcpcb.com. This is the first time I’ve had a company sponsorship! Thanks to my wife, Loretta, KBØVWW, for reading the short advertising copy.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | 1 Comment

Review of Radioddity GD-77 DMR Tier 2 Handheld (#93)

The Radioddity GD-77 is their 2nd Generation DMR Tier 2 radio and it looks like they’ve done a fine job. It’s a solid, useful radio, and I recommend it. If you’d like to purchase it and support Ham Radio Answers at the same time, use this Amazon link: http://amzn.to/2gmh6dq.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | Leave a comment

MARC Field Day 2017 Photos by Larry Braden W7LEV

Photos by Larry Braden, W7LEV, put to music by Dave Casler.
Music: Bama Country – Country by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/…)

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | Leave a comment

Stuff You Need to Know to Set Up Your VHF/UHF Rig (#91)

Using CHIRP as our guide, let’s look at all the different stuff you need to understand before you set up your VHF/UHF handheld or mobile. We look at frequencies and offsets, CTCSS tones, simplex vs duplex, and much more. Thanks to Joy McLemore Rabins for the question that led to the video.

You can see a list of Ask Dave videos by clicking here. You can ask a question by clicking here. You can go to my YouTube channel by clicking here. And the tip jar is available by clicking here.

Posted in Uncategorized | Leave a comment