West Mountain Radio TARGETuner Auto SWR Tuning Test with a High Sierra Sidekick Antenna

Описание к видео West Mountain Radio TARGETuner Auto SWR Tuning Test with a High Sierra Sidekick Antenna

This video shows an Auto SWR mode test of the West Mountain Radio TARGETuner test with a roof-mounted High Sierra Sidekick Screwdriver Antenna. The High Sierra Sidekick Antenna lacks a turns counting sensor and must be tuned with either the Manual Control mode or Auto SWR Tuning mode.
In Auto SWR Tuning mode the controller attempts to automatically adjust the coil to the point of minimum SWR as I change operating bands. In this video, it successfully tuned the antenna quickly between the 10, 15, 20, 30 and 40 meter bands and for frequency changes within those bands.

Memory and Manual Tuning work better than Auto SWR Mode on the 80 and 60 meter bands where my 75 foot long coaxial cable exhibits multiple SWR minima that confuse the SWR sensor. On those bands Auto SWR Mode often could not determine the correct motor direction and continually cycled when the measured SWR was greater than 9.9:1. Due to the narrow bandwidth of the antenna on 80 and 60 meters, the Auto SWR Tuning Mode often passed over the resonance point too quickly, repeatedly reversing the motor direction without reaching the resonance point unless I set the motor speed to Slowest. In that case, I needed to first adjust the antenna in Manual Control mode for maximum received noise and then use the Slowest motor speed for Auto SWR Mode to work. Auto SWR Mode works better on 7 MHz and above and with the short coaxial cables of most typical mobile installations.

I currently use this TARGETuner controller with a new Tarheel 100A-HP vertical antenna that incorporates a turn counting sensor. The TARGETuner controller in Memory Mode most reliably tunes antennas with turns counting sensors. See https://photos.app.goo.gl/Fj46lux0GQX...

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