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Re: Rotor Adjustment



I got another elevation rotor and it works fine now.
But I really hate this rotor cable I bought at HRO. It is so stiff and ties 
into nots. We use it for portable and Field Day use. if it was a one time 
installation it may be fine. Does anyone use any softer easier to roll cable?

At 04:09 PM 6/17/2005, you wrote:
>Hi, Les
>
>1) Disconnect the wires E1  E2 and E3 from the control box
>
>2) Get an ohmmeter and measure the resistance between E1 and E3
>      you should measure 500 ohm
>
>3) Measure the resistance between E1 and E2 and the value measured
>     depends on the rotor position but in any case you should measure
>     a value ranging between 0 ohm to 500 ohm
>
>4) Measure the resistance between E2 and E3 and you should measure
>      a value ranging from 0 ohm to 500 ohm depending on the rotor
>      position.
>
>I suspect that in your case the resistance between E2 and E3 is infinite
>because the circuit somewhere is open.
>
>If the circuit between E2 and E3 is open there are two possible reasons.
>
>a) The wire E3 between the control box and the rotor is open along the
>     run or the screw E3 of the rotor is loosy.
>
>b) Worse case the potentiometer between E3 and E2 is internally open
>
>In this case to be absolutely sure you must disconnect the wires
>E1  E2 and E3 from the motor and using the same procedure you should
>measure the potentiometer resistance directly to it
>
>If the potentiometer is open between E2 and E3 the motor must be open
>and the potentiometer must be replaced.
>
>Please let me know the results of your measurements.
>
>Best 73" de
>
>i8CVS Domenico
>
>----- Original Message -----
>From: <sco@sco-inc.com>
>To: "i8cvs" <domenico.i8cvs@tin.it>
>Sent: Friday, June 17, 2005 3:38 PM
>Subject: Re: [amsat-bb] Rotor Adjustment
>
>
> >
> > Are you saying that the problem is inside the rotor itself?
> > Is that something easy to locate and fix?
> >
> > Les
> >
> > At 03:51 AM 6/17/2005, you wrote:
> > >Hi, Les
> > >
> > >The 500 ohm potentiometer inside the rotor unit  has one end
> > >connected to the positive DC voltage in to the control box and
> > >the wiper is connected to the meter via a adjustable trimmer.
> > >The other end of 500 ohm potentiometer is connected to the
> > >negative DC voltage in to the control box.
> > >If the negative end of potentiometer get disconnected from the
> > >negative in to the control box because of an open circuit than the
> > >potentiometer functions as a reostat in series to the meter and the
> > >dial goes all the way over the max right position no matter the
> > >motor is rotate in any position.
> > >The open circuit can be in the wire connecting the pot to the
> > >control box or the pot itself.
> > >
> > >Best 73" de
> > >
> > >i8CVS Domenico
> > >
> > >----- Original Message -----
> > >From: <sco@sco-inc.com>
> > >To: <amsat-bb@AMSAT.Org>
> > >Sent: Thursday, June 16, 2005 10:12 PM
> > >Subject: [amsat-bb] Rotor Adjustment
> > >
> > >
> > > > When I turn the power on to my G5500 controller the needle on the
> > >Elevation
> > > > dial goes all the way over to the max right position.
> > > >
> > > > How do i adjust it back to normal?
> > > >
> > > > Les
> > > > ----
> > > > Sent via amsat-bb@amsat.org. Opinions expressed are those of the
>author.
> > > > Not an AMSAT member? Join now to support the amateur satellite
>program!
> > > > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> > >----
> > >Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> > >Not an AMSAT member? Join now to support the amateur satellite program!
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----
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