[TowerTalk] Antenna Rotor Speed
k5go at cox.net
Thu Sep 2 07:26:49 PDT 2010
I believe the best system is one like Green Heron Engineering offers
which will allow you to ramp the speed up at the beginning of rotation
and ramp down toward the end of rotation - all programmable for duration
of ramp and range of ramping speed over that time. In between the ramp
up and the ramp down, the faster it can go (also programmable) and still
allow it to stop where you want it, the better.
I have had the tips of my 40M elements traveling at a speed of 7 feet
per second without any hint of a problem. That equates to a little more
than 1 RPM.
----- Original Message -----
From: "Kipton Moravec" <kip at kdream.com>
To: <towertalk at contesting.com>
Sent: Thursday, September 02, 2010 8:32 AM
Subject: [TowerTalk] Antenna Rotor Speed
>I am building an antenna rotor for a HF antenna.
> How fast should the antenna rotate?
> Looking at the motor/gear they have now it looks like it will rotate
> 10 RPM, which means 6 seconds to go end to end. That seems too fast to
> me. If I change gear sets I can go to a 4 RPM which is 15 seconds to
> to one end to the other. That still seems a little fast. On the other
> hand if it goes too slow people will not like it.
> For you folks that like contesting, what speed is reasonable?
> Or maybe I should ask what is the slowest speed you would not complain
> about? :)
> Kipton Moravec AE5IB .- . ..... .. -...
> "Always do right; this will gratify some people and astonish the
> --Mark Twain
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