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Cushcraft R7 x-hat

Aug 1st 2021, 08:50

KinSea

Joined: Apr 24th 2021, 07:45
Total Topics: 0
Total Posts: 0
I need to replace the x-Hat on the R-7 I inherited. Each section of the X-Hat is comprised of two 1/16" rods joined at the middle with a 1/4" coupling. Is there any problem with substituting same total length 1/4" rods?
Aug 2nd 2021, 07:57

W1VT

Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Tapering does two things. It reduces the wind load. It also makes the effective electrical length slightly longer.

Zak W1VT
ARRL Senior Lab Engineer
Aug 7th 2021, 17:07

KinSea

Joined: Apr 24th 2021, 07:45
Total Topics: 0
Total Posts: 0
Thanks for the input. I noticed I described the existing X-Hat rods as 1/16". I meant to say 3/16". Anyways, I guess I'll experiment with the 1/4" rod - I have not been able to find the VF of the rod to approximate t's electric length. Oh well, I'm never too old to learn new things.
Aug 7th 2021, 17:11

KinSea

Joined: Apr 24th 2021, 07:45
Total Topics: 0
Total Posts: 0
Thanks for the input. I noticed I described the existing X-Hat rods as 1/16". I meant to say 3/16". Anyways, I guess I'll experiment with the 1/4" rod - I have not been able to find the VF of the rod to approximate t's electric length. Oh well, I'm never too old to learn new things.

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