Re[2]: [TowerTalk] PROP PITCH ROTATOR !!!
Bob Otto
Bob Otto <N8NGA@one.net>
Mon, 13 Nov 2000 15:47:19 -0500
Where does one buy a "prop pitch" rotator?? I saw the reference to M2
but the M2 site doesn't show the prop pitch rotator.
73 from.......
Bob Otto
N8NGA@one.net
Cincinnati, Ohio
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DXCC 10M ** DX is !! ** WAS 10M
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Sunday, November 12, 2000, 1:49:42 PM, you wrote:
GOK> The power supply in M2's RC2800P prop pitch controller is built-in. You
GOK> can tell it when you pick it up. It runs 33 volts DC at 12 amps, unless
GOK> an optional output voltage is specified. This takes care of a certain
GOK> amount of expected line voltage drop, plus a little extra "spunk" for
GOK> motor startup.
GOK> However, a stock prop-pitch will not tell the 2800P what it needs to
GOK> know to stop and start. It requires the installation of a "counter kit".
GOK> This is a reed switch which closes momentarily with every motor
GOK> revolution, and has to be installed on the motor. This "sense" line must
GOK> be cabled back to the 2800P, which counts the closures to determine it's
GOK> position. This is the same method commonly used to calibrate the
GOK> positioning on C-band satellite dish actuators.
GOK> Calibrating the prop-pitch's motor turns count per 360 degrees rotation
GOK> is a pre-installation task which gives a full rotation closure count
GOK> which is programmed into the 2800P. The reed closures are counted,
GOK> multiplied by 360, and divided by the full rotation count in the
GOK> controller to figure degrees turned.
GOK> M2 will also take your prop pitch, install the sensor, and a welded
GOK> precision mounting system for their monster mast clamp on the top, for a
GOK> price of course. The result is a very flexible and controllable system
GOK> built around one of the most durable reduction motors ever built.
GOK> --... ...-- . ... --. .-..
GOK> Regards, Guy
GOK> Apex, NC
GOK> ----- Original Message -----
GOK> From: Marc Wullaert <on4ma@village.uunet.be>
GOK> To: <towertalk@contesting.com>
GOK> Sent: Sunday, November 12, 2000 5:42 AM
GOK> Subject: [TowerTalk] PROP PITCH ROTATOR !!!
>> Hi TT'ers,
>>
>>
>> I'm in the process to buy a Proppitch rotator.The 24vdc motor is just
GOK> out of
>> a firm for a check up.
>> All brushes are renowed.The control box is home made whit a radio
GOK> compass
>> and selsyn motor for the
>> direction.
>> Some questions :
>>
>> Is there any info on the web ? i did a search but just get one link
GOK> for M2
>> controlbox !
>> is anyone using this digital controlbox from M2.Do you need a heavy
GOK> duty
>> power supply
>> or is it al build in ?I think the part for the direction at rotor have
GOK> to be
>> rebuild for this control box ?
>>
>> I will try to have a demonstration to see if all is working ok.Can i
GOK> do some
>> test to se
>> if the gears are ok ?How much is the the time to make one tour 0°-360°
GOK> ?
>>
>> And finaly : WHat is a correct price for a PP rotator ?
>>
>> 73, Marc on4ma
>>
>>
>>
>> Marc Wullaert ON4MA
>> Software Manager UBA
>>
>>
>>
>>
>>
>> --
>> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
>> Submissions: towertalk@contesting.com
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>>
>>
GOK> --
GOK> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
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