Assembling the MFJ-1846 Six-Band Hex-Beam Antenna (#152)

Watch the time lapse photography as I assemble the MFJ-1846 six-band hex-beam antenna. I also explain how hex beams work.

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Conversation with Ray Nelson, N1MPD, Regarding Coax Connectors (#149)

Ray Nelson is one of the principles at MPD Digital (usacoax.com). I spoke with him at length about connectors for coaxial cable. Enjoy our 30-minute chat!

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Modeling the Simple Inverted Vee Antenna #102

What can we learn about the Inverted Vee HF single-band antenna from the EZNEC+ model? Lots of things, having to do with height above ground, the amount of spreading, and using a metal pole as a mast. Tune in for full details!

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Modeling Common Dipole Variations (#101)

Viewers queried me about what happens when you shorten a dipole by letting the ends hang down, or have to put up a dipole that can’t be in a straight line, and I was also curious about the effect of my aluminum masts on horizontal dipole performance. EZNEC+ to the rescue. The video shows that modified dipoles can work quite well.

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STRANGE! Atmospheric Weirdness (Out of cycle video)

These strange atmospheric formations are weird! I’ve never seen anything like them. Okay all you weather scientists out there, what are they?

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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.

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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.

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J-38

For Tom Medlin’s show by KEØOG

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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.

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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.

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