Tuning the 40m Coil

With the current settings on 30m (26cm 2.5 turns shorted), fc on 40 shifted to 7.188 MHz – even with 8 turns shorted. Moving the shorting strap to 7 turns, fc shifts to 6.988 MHz. With 7.5 turns shorted fc = 7.039 MHz.

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Tuning the 30m Coil

I have tried to adjust the 30m coil on the HF2V in order to bring the resonance closer to 10.1 MHz. Increasing the length of the coild 17->20 cm did indeed move the cenntre frequency to 9.2 MHz, but going up to 25 cm did not seem to make a big difference; it only moved fc by about 250 kHz.

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Butternut HF2V for the 160-30 meter bands

After my DX-88 died in a winter storm, I have decided to give the Butternut HF2V a try. This antenna is a 10 meter long vertical for 80 and 40, with extensions available for the 160 and 30 meter bands. I was rather curious about it since this is the only vertical antenna that provides the four lower bands in one package. Moreover, having used the HF6V previously, I had quite high expectations to this one. Although rather expensive, my success with antenna have been very satisfactory so far. As a bonus it even works well on 15 meter band with flat 1.2 SWR between 20-22 MHz.

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