You might consider replacing the rivets on general principles. My
EF-180C, which had been around for a while before I bought it, had about
30% of the rivets loose, a few missing, and the remainder ok. I drilled
out all of them and replaced them with cross bolted machine screws of an
appropriate diameter and spacing.
Grant KZ1W
On 6/8/2013 6:33 AM, Jim Thomson wrote:
I have a F-12 340N. Manual claims you can shift the ele resonance points
by adjusting the eles. 6 inchs per side = 100 khz.
Now do they mean tweak the .375 inch tips.... OR do they mean tweak the
adjustable linear loading rods ???? The tips are riveted.
It would make a lot more sense to tweak the LL rods..and leave the tips alone.
Makes more sense to me to make the ele max length
and use LESS LL if you want to move the freq up higher in the band.
Does anybody have experience with this..or know the answer ? The new owner of F12
doesn’t know either.
tnx in advance.......... Jim VE7RF
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