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Posted by wa5dxp on 07/29/06 17:21
I looked in the Pansat 2700 Manual, and it has on back panel
connections for "Manual Polarizer", showing +5V, a square wave symbol,
and ground. Would that be the same as the servo on an old Analogue
receiver like my Uniden Supra? If that's the case, then I would just
have to use the Supra to position the dish, then could use the 2700
to scan the satellite. As you say, a multipole relay could switch the
servo to prevent interference between Supra and 2700, does that
sound right to you?
Thanks for your help, I didn't know that the 2700 had a servo output,
DUHHHHHH.....
Lets say it would work, to program the 2700 I guess you would use
the Smart Scan first for C-Band channels, then switching inputs with
Diseq switch to KU, do another Smart Scan using KU input, is that
correct? It sure would take all the work out of fooling with manually
programming polarity and all that....
Thanks again
Jim
On Fri, 28 Jul 2006 23:39:09 -0700, Unregistered <not@home.com> wrote:
>If your DVB receiver has servo connections, then you just hook them
>up to your servo and that's mostly that. (You also need to set the
>angle in your setup menus.)
>
>As far as controlling the position of the dish, you need something
>like the Vbox (or Vbox II). Here's a random Google result:
>
>http://roxsat.biz/product_info.php?products_id=53
>
>If your DVB receiver doesn't have servo connections, then there was
>an adapter box out there that sensed the 13V/18V on the coax and
>converted this to servo output. I don't remember what it was called,
>but I do know it exists (or existed). It'll probably be easier just
>to get a DVB receiver with servo connections.
>
>I believe the Pansat 2700 does have servo connections, so you're all
>set in that regard.
>
>If you want to hook 2 (or more) different receivers up to a dish,
>then one way to do it is to use a switch or relay to change which
>receiver controls the servo, while letting just one receiver handle
>the dish position. You need a switch or relay that handles 2 poles
>(the +5V and the Servo lines), though you can probably get away with
>just one if you use some diodes on the +5V lines. As far as the
>grounds, just hook them all up together. A relay is handier than
>a switch if you have just two receivers and one of them has a switched
>output that is on when the receiver is on. If you're clever, you can
>probably use the +5V line itself to switch the relay. Just watch that
>you don't overload that line.
>
>Jim wrote:
>> The polarity servo on a standard analog receiver has 3 leads, and when
>> switching channels the little servo motor switches polarity from V to
>> H.
>>
>> Is there any way to make a DVB FTA receiver control this servo motor
>> when it is scanning a satellite? From what I understand most people
>> on this group use the analog receiver to control the polarity, and
>> then use the FTA receiver to scan all the Horizontal channels, then
>> you would have to scan the Vertical channels, using a DiSEQ switch to
>> switch between C and KU feeds.
>>
>> I was just wondering if there was a way to make the FTA receiver
>> control the big dish like the analog receiver, maybe some kind of
>> adapter box to make the necessary positioning and servo conversions?
>> It would be nice to just hit the scan on a certain satellite let her
>> rip like you can do with small dish.
>>
>> Thanks for any leads/advice/suggestions,
>>
>> Jim
>>
>>
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