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jimmypop

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Reply with quote  #1 
I use an ancient UNIDEN UST 2300 to change the polarity of the servo motor on my chaparral feedhorn, but Im kinda fed up with the fact that I cannot see the skew numbers on the tv screen nor on the device itself (not to mention that everytime there is a power outage or I disconnect the device I lose the H and V skew I had programmed) so I want another option. Im not that good on voltage stuff and the like so can any of you advice if the following manual controller for sale on ebay can work with the chaparral servo?



This is the controller:



Description

  • Allows you to operate your servo or like device quickly and easily
  • Useful for aligning servos during construction of a robot
  • Includes center position light and cycle switch
  • Weight: 0.03
  • Input only accepts 4.8 - 6.0 VDC




and this is the servo I use:





I guess what's throwing me off is the fact that the controller lacks the white cable input. Any suggestions will be appreciated

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Scanning C Band 135º-78º on 10ft'er
& C Band 61º-40º on 7ft'er
GFM

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Reply with quote  #2 
That device is not built for a satellite skew servo, there is no position feedback mechanism (white wire) to stop the motor at the proper position. It would run the motor continuously until switched off. There are other devices you can build, think I have seen a design on this forum that allows input from the voltage control for an LNB polarity signal to determine skew/polarity fine-tune, and a pot for adjusting.
I use an ASC-1 for skew control and actuator operation. These are pricy but work well with the newer satellite receivers.

Easiest/cheapest option is to switch to an LNBF, Rick sells some good ones.

Another option is to use a dual polarity feed horn (two LNBs) or "Bullseye", but these are pricy, and the latter requires four LNBs. You have fixed skew with these assemblies but you can use better LNBs such as PLLs if you are more discriminating in your equipment taste. [smile]

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Receivers: AzBox Ultra, Micro HD
-10' dish with Chaparral Corotor II/Norsat DRO LNBs
-36"Ku with SG2100 & PLL321S-2 --... ...--
RickCaylor

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Reply with quote  #3 
Another option is the APC1 Servo Controller that we sell (Not on ebay):  
This can be connected to a FTA Digital Receiver and use the 13/18VDC from the receiver to control it.  So once you have set the servo correctly, then the receiver can change the polarity automatically when you change channels.

LNBF's are a nice option as mentioned above, but they do not allow you the choice of using a Quality LNB like a Norsat 5150F for C-Band or a 4106A for Ku-Band or even better LNB options.

The ASC1 mentioned has worked will for many and not so well for many others.  Do your research on this before adding to your system.

Built in the USA by a fellow forum member for us and you!  [smile]

Another Great Day to Be Alive!

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jimmypop

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Reply with quote  #4 
Appreciate the feedback, yeah like Rick wrote there's nothing better than those NORSAT LNBs which is why I dont do LNBFs
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Scanning C Band 135º-78º on 10ft'er
& C Band 61º-40º on 7ft'er
majortom

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Reply with quote  #5 
the original polarotor control thread is here, for the details on the standalone box that Rick sells.
If you aren't in to building things yourself, that is probably your best option.

http://rickcaylor.websitetoolbox.com/post/polor-rotor-control-5354840

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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
Hockeynut

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Reply with quote  #6 
Another option would be to eliminate the servo and go with a bullseye type feed like the Pansat DP-4.Install lnb`s of good quality.Rick sells everything for this type of setup.



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Dish`s--10' KTI,10' Button Hook,10' Unimesh x2, 12' Cosmos,8 1/2 foot Birdview in the works.
1.2 Ch Masters parked at 91,103,105...1.2 Ch Master on a factory Ch Master polar mount tracking from 58-127.
Positioners--Gbox,Vbox and ASC1`s
Receivers--AZMe,AZPlus,AZElite,Icecrypt S1600 HD,Pansat 9500,VU Solo2 SE,Octagon SF4008 UHD 4K,Prof 7500,TBS 6982.

virginiap20007

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Reply with quote  #7 
A lot of the old Pansat receivers have skew control for your polorotor and they can be picked up pretty cheap.  One of the last pansats[9500] also had skew control.  I have a C/Ku feed horn with C and Ku lnbs and it is nice to be able to adjust the probe using the polorotor.  I still use a 922 dish mover and polorotor controller.  Jess out in California
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9ft.button hook mesh HtoH mount; 4dtv922 C/KU feed horn w/ slaved AZ prem, looped pan 9500, and a Manhattan at the end.. Got a philips suround sound in there and SONY BRAVIA TV
skideric

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Reply with quote  #8 
Quote:
Originally Posted by RickCaylor
Another option is the APC1 Servo Controller that we sell (Not on ebay):  
This can be connected to a FTA Digital Receiver and use the 13/18VDC from the receiver to control it.  So once you have set the servo correctly, then the receiver can change the polarity automatically when you change channels.

LNBF's are a nice option as mentioned above, but they do not allow you the choice of using a Quality LNB like a Norsat 5150F for C-Band or a 4106A for Ku-Band or even better LNB options.

The ASC1 mentioned has worked will for many and not so well for many others.  Do your research on this before adding to your system.

Built in the USA by a fellow forum member for us and you!  [smile]

Another Great Day to Be Alive!


Yup,i got one of these from Rick a good while back.
One of the BEST purchases ever made! I don't hook to rec,just use manually.Too stingy with my signal! And having magnetic base,can just stick it on the side of rec.Mine is stuck on side of my Toshiba TRX-1800,or TRX-80 most of the time.Just 2 of my six 10' or better are still using servoo's.Others have LNBF's.

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TRAXIS 6100HD,MicroHD Pro,2-X2 M1 HD+,OpenBox s9,Skybox F3s,2 Skybox F4's,Nexus-S & TwinHan 1030,Neusat SP6000,CNX Nano 2,Nfusion solaris,Pansat 2500a's,Coship TRX-1800,TRX-80,TRX-1520 UHF,TRX-1800.ORB 5000,TRX-1420,Dishes-1 11 ft Radyx,4-10 FT Mesh,1-10.5 Ft FG,1-8.5 FG,Mesh,1-10.5 FG,4 Ft CM Ku,6 Charter Dual Linear LNB 1 Meter,2 1.0 Meter PS,2-Superdishes.
stecle

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Reply with quote  #9 
I have a question that I have never been able to get a straight answer to.

I am using a polorotor feed horn with a Norsat 5120 lnb.

I have considered using a dual feedhorn with 2 lnb's to eliminate the servo motor.

I have been told that the polortor allows you to adjust the skew which provides you more gain that the non skewable dual lnb feedhorn.

I have also been told that the dual lnb feedhorn works just as well as the polorotor as there is no need to adjust the skew.

I live in a very cold climate, and it would be nice to eliminate the problems that go with the servo motor.

I appreciate all feedback.
Hockeynut

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Reply with quote  #10 
Quote:
Originally Posted by stecle
I have a question that I have never been able to get a straight answer to.

I am using a polorotor feed horn with a Norsat 5120 lnb.

I have considered using a dual feedhorn with 2 lnb's to eliminate the servo motor.

I have been told that the polortor allows you to adjust the skew which provides you more gain that the non skewable dual lnb feedhorn.

I have also been told that the dual lnb feedhorn works just as well as the polorotor as there is no need to adjust the skew.

I live in a very cold climate, and it would be nice to eliminate the problems that go with the servo motor.

I appreciate all feedback.
I once had a few corotors stecle.The late great ACRadio had me sold about dual cband feedhorns.He sent me a Dual Cband Seavey and I installed a couple cal amp lnbs..After seeing results and simplifying the system I never turned back..Took the corotors off of the other buds and installed dual Cband ortho`s on the remaining dish`s.

Also have tried many quad bullseye type feedhorns.Yard results there is the Pansat dp-4.

I know many still like there setups with a corotor setup and thats all good but after trying other ways I have no regrets.

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Dish`s--10' KTI,10' Button Hook,10' Unimesh x2, 12' Cosmos,8 1/2 foot Birdview in the works.
1.2 Ch Masters parked at 91,103,105...1.2 Ch Master on a factory Ch Master polar mount tracking from 58-127.
Positioners--Gbox,Vbox and ASC1`s
Receivers--AZMe,AZPlus,AZElite,Icecrypt S1600 HD,Pansat 9500,VU Solo2 SE,Octagon SF4008 UHD 4K,Prof 7500,TBS 6982.

rempfer

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Reply with quote  #11 
Quote:
Originally Posted by Hockeynut
Also have tried many quad bullseye type feedhorns.Yard results there is the Pansat dp-4.
I'm not sure I quite understand this.  Does this mean using dual C-band and dual Ku-band LNBs simultaneously?  No servo?  How well does this work?
Hockeynut

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Reply with quote  #12 
Quote:
Originally Posted by rempfer
I'm not sure I quite understand this.  Does this mean using dual C-band and dual Ku-band LNBs simultaneously?  No servo?  How well does this work?


Here ya go rempfer.

https://rickcaylor.websitetoolbox.com/post/pansat-dp4-8250674?&trail=15

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Dish`s--10' KTI,10' Button Hook,10' Unimesh x2, 12' Cosmos,8 1/2 foot Birdview in the works.
1.2 Ch Masters parked at 91,103,105...1.2 Ch Master on a factory Ch Master polar mount tracking from 58-127.
Positioners--Gbox,Vbox and ASC1`s
Receivers--AZMe,AZPlus,AZElite,Icecrypt S1600 HD,Pansat 9500,VU Solo2 SE,Octagon SF4008 UHD 4K,Prof 7500,TBS 6982.

Pops

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Reply with quote  #13 
Hockey, could I get you to go back a few steps for remedials like me that don't completely understand the non-servo approach?  By "quad" do you mean there are 4 dedicated LNB's per dish - 1 C-Band horizontal, 1 C-Band vertical, 1 Ku-Band horizontal, and 1 Ku-Band vertical?  

I think you might know my set up better than I do.  I use the H/V servo approach to change polarity on my C and KU LNB's.  But I always forget what some of the terms mean like:  polarotor, co-rotor, orthomode, bullseye, PLL's, LNBF, Univeral LNB . . . . . . . . . . . . . . . 

I always thought it would be cool if we had a glossary of terms here.  

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boblop

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Reply with quote  #14 
http://www.satnews.com/products/glossary.html
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majortom

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Reply with quote  #15 
Quote:
Originally Posted by Pops
But I always forget what some of the terms mean like:  polarotor, co-rotor, orthomode, bullseye, PLL's, LNBF, Univeral LNB . . . . . . . . . . . . . . . 

I always thought it would be cool if we had a glossary of terms here.  

Off the top... 2 cents

polarotor -> generic term for a feedhorn/associated circuitry that uses servo to set the polarity/skew
co-rotor -> Chapparal term for a dualBand feedhorn that uses servo / polarotor. Has become used like Kleenex by some people, for other mfrs.
orthomode -> generic term for a feed that has two waveguides, whose transducers are 90 degrees apart.
bullseye -> Chapparal marketing name for a dual band orthomode feed for C and Ku Band
PLL -> Phase Lock Loop
LNBF -> Low Noise Blockdown-converter Feedhorn
Universal LNB -> No such term that I am aware of.
You may be mistaking for Universal LNBF.
An LNB and LNBF are not the the same, so should not be interchanged, especially on an internet forum where someone new
to the hobby may get confusered.



__________________
Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20150516202529/http://www.geo-orbit.org:80/sizepgs/tuningp2.html#anchor469886
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