Category Archives: Ham Radio blog entries

All About Baluns (Ask Dave #73)

I get lots of questions about baluns. This video explores baluns and gives demos. A balun is a device to convert a balanced transmission line to an unbalanced transmission line and vice versa. You can see a list of Ask … Continue reading

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FIXED! DEFACEMENT FIXED!

FIXED. SO MANY THANKS FOR YOUR SUPPORT! I’ll put a video up with details. 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 … Continue reading

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LMR-400 Coax Cable and Connector (#72)

I’m new to Times Microwave LMR-400 coax cable, often considered the best in ham radio (and rather expensive). I purchased 500 feet for future antenna projects. Learn with me as I attach a PL-259 connector! You can see a list … Continue reading

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Review of the MFJ-1835 Cobweb Antenna (#71)

Here’s a review of the MFJ-1835H (high power) cobweb antenna. It has a very small footprint and can be a great stealth antenna. I found myself really liking it. Join me for unboxing, assembly, and testing. If you have limited … Continue reading

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Review of Chameleon P-Loop Magnetic Antenna (#70)

Here’s my review of the Chameleon P-Loop magnetic loop antenna. I show some use cases for which this antenna is particularly suited. The video provides lots of info about the antenna. Thanks to all who participated in my tests last … Continue reading

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Help me test the Chameleon P-Loop (#69)

Give me a hand testing the Chameleon P-Loop. I’ll have it set up under portable conditions on Saturday, May 27th, from 10 a.m. to noon US Mountain Daylight Time. I’ll be calling CQ on phone around the bottom of the … Continue reading

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QRP-Labs Ultimate3S WSPR Kit Assembly and Review (#68)

Michael Lloyd, NE5U, sent me several kits from QRP-Labs. I put together the various subkits required for the WSPR auto beacon. Interesting project that you might want to emulate! It took some real doing to get the right instructions and … Continue reading

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Review of MFJ-1886 Rx-only Antenna (#67 MFJ)

From unboxing to mounting and testing, this is a great little antenna. Its receive performance matches that of a more traditional vertical as well as MFJ’s 1788 loop antenna. Watch unboxing through testing. MFJ sent me this antenna for review–thanks! … Continue reading

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DM-R5+ and GD-55 DMR Radios Revisited (#66)

Last December I unboxed the Baofeng DM-5R+ and the Radioddity GD-55. Soon after several repeater operators said these radios were banned from their networks. This video looks at why that is so and how the radios don’t meet current American … Continue reading

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MFJ 1788 Loop Antenna Fixed (#65)

After several videos and disappointments, the MFJ-1788 Hi-Q Loop Antenna didn’t work on 40 m. Now it does! I took it apart to discover that the big capacitor was not fully meshing because of a mis-set limit switch. See how … Continue reading

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