Review of MFJ-1984MP End-Fed Multi-band Antenna (# 89)

This turned out to be one weird antenna. It’s an end-fed multi-band antenna that’s best used in a portable environment. I had to get MFJ’s help to figure out what was going on; I provide all this info in the video. This is the summer of antennas! I learn new things every day! (I skipped a number–#88 is coming).

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MFJ-6120 Zepp and MFJ-6220 Collinear Review and Test (# 87)

These are both 20 meter single band wire antennas (also available for other bands). This video reviews the “how it works” followed by tests for each, and explains how I got the Zepp to work. I particularly like the collinear (and, yes, it’s spelled with two L’s), which performs significantly better than my station vertical.

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Making and Using a Simple 40-m Dipole (#86)

I’m often asked how to make a dipole. In this video I use materials on hand to build a 40-meter amateur radio dipole. I hung it on the antenna test rig I built this past week, and it works great! Lots of work, though. Although dipoles are available for far less than $100, I made this one for zero!

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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Setting up to Test Wire Antennas (#AD 85)

I have several wire antennas ready to test, but needed a couple masts. This video describes how I used chain-link-fence top rail together with pulleys and guy rope to set up the “test range.” This is an easy technique you can use to set up a dipole when there are no ready supports.


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Four MFJ wire antennas: Unboxing (#84)

MFJ sent me four wire antennas for evaluation. They are the MFJ-1984MP, MFJ-9232, MFJ-6220, and MFJ-6120. This short (a record for me!) video is the unboxing. Scroll down for more

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The Coax Connection: Interview with Ray Nelson, N1MPD (#AD 83)

Here’s a new approach. For the first time on an Ask Dave video, I’m focusing on an interview! In this case it’s with Ray Nelson, N1MPD, who with his wife own USA Coax (www.usacoax.com, or www.coaxusa.com, or mpddigital). Ray’s an expert on coax and on the many types of connectors available, and his business caters to both amateurs and commercial users. Learn about coax!

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Adding 20 meters to the QRP Labs Ultimate3 WSPR TX (#82)

I moved my little QRP Labs Ultimate3 WSPR transmitter from 30 meters to 20 meters, which involved building the kit for the 20 meter low pass filter. Follow along as I step through the process, stopping for a moment to really detail how to wind toroids. It’s now up and works: check for ke0og on wsprnet.org.

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Unbox the Radioddity GD-77 (#81)

Unboxing the not-yet-released Radioddity GD-77, their “try again” DMR Tier 1/Tier 2 radio. I describe many of the promised features. It’s both analog and digital, and operates on both 2 meters and 70 cm. I should have the programming software soon. It comes with a programming cable.

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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Testing the NEW GD-55+ for DMR (#80)

Here we are again, looking at the Chinese Radioddity GD-55+. The PLUS indicates they’ve made mods to solve the Slot 1/Slot 2 controversy. My testing indicates they’ve certainly gone a long way. They now cleanly transmit in only one time slot at a time. I leave it to others with more sophisticated test equipment, and as we have no DMR repeater near here, others can test for compatibility with standard DMR repeaters. I suspect I’ll get lots of comments!

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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My Station Antenna, Butternut HF-9V (#79)

Here’s an answer to a question I’ve been asked many times: what’s my station antenna? The answer is a Butternut HF-9V, a ground-mounted vertical with radials. This video explores how I have my antenna set up.

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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