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Author Topic: Fan vertical: tune highest or lowest band first?  (Read 1057 times)
AG4DG
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« on: October 07, 2010, 07:39:44 AM »

When you install a fan vertical antenna, are you supposed to adjust the antenna length for the highest or lowest band first?  Why?

If you use Hamstick verticals, are you supposed to adjust the antenna length for the highest or lowest band first?  My guess is that you're supposed to adjust for the highest bands first, as the lowest bands are trickiest to adjust for and would get detuned if you adjusted for those first.  Am I correct?
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WB6BYU
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« Reply #1 on: October 07, 2010, 08:12:33 AM »

For multiple dipoles on a common feedpoint, tune the longest wire (lowest frequency band) first.  The shorter wires
have less effect on it, while it has more effect on the tuning of the higher bands.

(A true fan dipole is a wideband antenna that needs no tuning.)

The same principle applies to similar vertical antennas.


Most Hamstick verticals that I've seen only use one element at a time - you swap Hamsticks when you change
bands.  In that case you an tune them in any order, since they are independent.
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AG4DG
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« Reply #2 on: October 07, 2010, 08:23:11 AM »

Thanks.  For a Hamstick Tree (fan vertical with Hamsticks), do you tune for the lowest or highest band first?
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KC4GS
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« Reply #3 on: October 07, 2010, 09:03:15 AM »

I ran 5 hustler coils at one time, I tuned the 75 meter first, then went to the others, ending up with the 10 meter coil.  Worked well for me.
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N6AJR
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« Reply #4 on: October 07, 2010, 01:08:56 PM »

long to short. I.E. 80 then 40 then 20 etc. the do again to tweek.
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