Posts Tagged ‘Antennas’

Rebuilding the 80-40-30 Meter Trap Dipole

After more than 5 years of operation, one of the antenna leads on my homebrew 80-40-30 Meter Dipole broke at the center balun connection. This dipole has served me well, allowing me to easily utilize those lower HF bands. While I did not use 30 meters much, it was nice being able to go there […]

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Nano_VNA Testing

This year, one of my Christmas presents was a Nano_VNA (Vector Network Analyzer). These are like an antenna analyzer on steroids. You can check the SWR of your antenna through a range of frequencies, and get detailed information about the antenna impedance, including whether it is inductive or capacitive at a given frequency. This information […]

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43′ Vertical Final Install Pictures

I received an email from a follower that had questions about my final configuration of the matching network for my 43′ vertical.  I promised him I would take some pictures of it the next time I was up at the Ranch, so I did that yesterday. A couple of them are a little blurry, but […]

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Kenpro KR-5400 Rotator Controller Repair

At out last balloon flight, I discovered two problems with the rotator system.  The Elevation Meter was intermittent, and tapping on it would make the reading fall to zero, and tapping again would bring it back to the correct position.  This didn’t seem to be affecting the automatic control. I also found that the azimuth-right […]

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Hex Beam Installation

After giving up on my 35 year old Cushcraft A4, I ordered a Hex Beam from NA4RR.

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