I agree ... one turn through a core is insufficient on 160m.
Using clamp-ons can be useful in other semi-similar situations, though.
A couple of years ago afriend of mine, K9RX, was having significant
detuning issues with his 3-stack of KT34XA's. He could see the effect
on SWR (and presumably pattern) on either 15m or 10m (I don't remember
which band .. maybe both) as he rotated the stack. He was convinced he
was getting interaction with the top sections of each guy even though he
had them split with insulators per the usual recommended lengths. We
put three Mix-31 clamp-ons from DX Engineering on the top section of the
guys out as far as I could reach from the tower at each level and the
situation dramatically improved.
On 10/5/2010 9:28 AM, Jim Brown wrote:
> On 10/4/2010 3:00 PM, Michael Baker wrote:
>> How about using the Giant Clamp on Beads made my Fair-Rite?
>> Clamp one or more on each leg and the descending cables.
> Sorry, that will NOT work -- the impedance of a single turn through
> these parts are FAR too small to have any effect on 160M.
> 73, Jim Brown K9YC
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