Tuning characteristics of the Wolf River coil with 102" whip

Today I tested the new mobile antenna on the 10- to 40-meter bands with mixed results. The antenna is a 102" whip mounted onto a Wolf River Silver Bullet Mini coil which is in turn mounted to one of the stake holes in the bed of my truck. Bandwidth on the 12 to 20 meter bands is surprisingly wide. As expected, the 12m band requires minimal use of the coil, so the PVC collar containing the tap

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