Vent rotor motors work very well. These motors are used in HVAC systems in
commercial buildings. They usually take 24 volts to operate and only turn
from 0 to a few degrees past 90. Most are settable.

--jj
"Richard" wrote in message
...
Hi. Has anyone designed a way to mechanically rotate their VHF/UHF yagi so
that it can be either horizontally or vertically polarized? If so, can
you
please direct me to a website or whatever. Preference right now for a
manual system, but would also take a look at motorised systems.

TIA.

Rich.

(Followup set to rec.radio.amateur.antenna, so all replies will go to this
group).

"Cougercat" wrote in message
news:gb%Gb.663529$Tr4.1667477@attbi_s03...
Vent rotor motors work very well. These motors are used in HVAC systems
in
commercial buildings. They usually take 24 volts to operate and only turn
from 0 to a few degrees past 90. Most are settable.

Where do they come from?
I didn't get any hits on google, or ebay.

Commercial HVAC (heating, ventilating, air conditioning) dealers. They are
duct mixture control motors.

--
Crazy George
Remove N O and S P A M imbedded in return address
"Dave VanHorn" wrote in message
...

"Cougercat" wrote in message
news:gb%Gb.663529$Tr4.1667477@attbi_s03...
Vent rotor motors work very well. These motors are used in HVAC systems
in
commercial buildings. They usually take 24 volts to operate and only
turn
from 0 to a few degrees past 90. Most are settable.

Where do they come from?
I didn't get any hits on google, or ebay.

On Fri, 26 Dec 2003 18:34:52 GMT, "Cougercat" wrote:

Vent rotor motors work very well. These motors are used in HVAC systems in
commercial buildings. They usually take 24 volts to operate and only turn
from 0 to a few degrees past 90. Most are settable.

--jj
"Richard" wrote in message
...
Hi. Has anyone designed a way to mechanically rotate their VHF/UHF yagi so
that it can be either horizontally or vertically polarized? If so, can
you
please direct me to a website or whatever. Preference right now for a
manual system, but would also take a look at motorised systems.

TIA.

Rich.

(Followup set to rec.radio.amateur.antenna, so all replies will go to this
group).



Grainger.com?

Donnie (N4JZH)

''Behold how good and well brethren dwell together in unity''