DG380 won't lift 1.2m Fortec Dish after rotating 40degrees

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Das Hammer

Das Hammer

Thread Starter
SatelliteGuys Pro
Feb 16, 2006
545
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Too close to Ohio
Hi, I finally got around to installing a DG380 that I picked up a few months ago. I purchased it to move around a Fortec Star 1.2 Meter dish which I also picked up from Sadoun. I chose the 380 because it had pretty good rotation (+/- 80 degrees) and claimed it would handle my 1.2 meter dish.

Install was a breeze and I'm able to grab anything from 43W to 123W (I'm at about 85W). However, if I go beyond 43W or 123W, the motor will not bring the dish back up. I have to go outside, press the button on the motor and lift on the dish to help move it.

I'm curious if this is "common" and the claims by the website were just totally wrong, or if I have a bad rotor. Unfortunately, I'm well outside of the 30 day return policy, but I still want to know if this is a real motor problem.

I have a 150'+ run of coax, and I was NOT using a switch during the test. With the 22KHz Sadoun switch installed I have the same performance.
 
phlatwound

phlatwound

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Lifetime Supporter
Dec 25, 2007
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Das Hammer, I have a DG380 installed on one of the .9m 3ABN dishes and it has worked well so far on that much smaller dish. I don't recall anyone else using this motor with a 1.2 meter but would think that you are not the first.

I hope you get it figured out, I was considering a 1.2 meter as a future upgrade and was planning on installing it on the DG380.
 
V

vfrjim

SatelliteGuys Pro
Jul 23, 2005
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Rhode Island
I would definitely set it on "H" transponders when moving the dish. Also, what LNB are you using? I would say that a 1.2m and a QPH is pushing it's capabilities.
 
satcom1

satcom1

SatelliteGuys Pro
Oct 7, 2007
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Near Chicago
Seems to me that when an American retailer claims that their product will do something, they stand behind it 100%. Or is this the age of oil companies and greed?
 
H

hwboy4

SatelliteGuys Family
Jun 12, 2007
43
16
Deep in the swamps of Jersey
I would definitely set it on "H" transponders when moving the dish. Also, what LNB are you using? I would say that a 1.2m and a QPH is pushing it's capabilities.

I have the GeoSatPro 1.2 with a QPH and DG380 and sometimes experience the behavior Das Hammer describes. Changing to a horizontal transponder seems to resolve the problem.

Not completely thrilled, but at least there is a workaround.
 
Das Hammer

Das Hammer

Thread Starter
SatelliteGuys Pro
Feb 16, 2006
545
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Too close to Ohio
I didn't specify an H or V TP. I was just using USALS to move the dish around in order to blind scan. Using the manual buttons on the rotor results in the same behaviour. One has to assume that selecting a channel on Horizontal polarity would give the rotor a little boost.
 
V

vfrjim

SatelliteGuys Pro
Jul 23, 2005
635
0
Rhode Island
Not that it should be a fix for this problem but I was reading about some STB's that allow an adjustment to increase the voltages by about 10% (~19.8v for a H transponder). I hope other manufacturers do the same thing
 
C

c_perrone

SatelliteGuys Family
Feb 3, 2004
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0
Not that I am having the same problem, althought it seems very similar. My motor is a DG240 and after about 3 weeks of working fine, it seems to get stuck in various positions from time to time. I did measure the voltage from the back of my pansat 9200 and I indeed have 19.8 volts on the horizontal setting and over 200ft away on RG11 I also have exactly 19.8 volts. I have ordered a new motor to see if things change.

Good luck

Clint
 
brentb636

brentb636

SatelliteGuys Pro
Jun 24, 2006
4,278
6
5 miles N of Saugatuck, Mi
Not that it should be a fix for this problem but I was reading about some STB's that allow an adjustment to increase the voltages by about 10% (~19.8v for a H transponder). I hope other manufacturers do the same thing

If I remember correctly , my old Fortec Classic NA had a voltage increase option. It was either the Classic NA or Ariza Extreme ( neither one is still around to verify ).
 
jayelem

jayelem

SatelliteGuys Pro
Jan 5, 2006
1,305
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Chicago suburbs.
I chose the 380 because it had pretty good rotation (+/- 80 degrees) and claimed it would handle my 1.2 meter dish.

However, if I go beyond 43W or 123W, the motor will not bring the dish back up. I have to go outside, press the button on the motor and lift on the dish to help move it.

I'm curious if this is "common" and the claims by the website were just totally wrong, or if I have a bad rotor.

Several replies on Sadoun's Technical forum about the DG380 have mentioned the same type of problem with a 1.2 meter dish.
 
brentb636

brentb636

SatelliteGuys Pro
Jun 24, 2006
4,278
6
5 miles N of Saugatuck, Mi
Hi, I finally got around to installing a DG380 that I picked up a few months ago. I purchased it to move around a Fortec Star 1.2 Meter dish which I also picked up from Sadoun. I chose the 380 because it had pretty good rotation (+/- 80 degrees) and claimed it would handle my 1.2 meter dish.

Install was a breeze and I'm able to grab anything from 43W to 123W (I'm at about 85W). However, if I go beyond 43W or 123W, the motor will not bring the dish back up. I have to go outside, press the button on the motor and lift on the dish to help move it.

I'm curious if this is "common" and the claims by the website were just totally wrong, or if I have a bad rotor. Unfortunately, I'm well outside of the 30 day return policy, but I still want to know if this is a real motor problem.

I have a 150'+ run of coax, and I was NOT using a switch during the test. With the 22KHz Sadoun switch installed I have the same performance.

If it were me, I'd take a receiver and TV out to the motor ( dragging my generator if I had to ) and see if the same problem existed on a minimal length of cable. If it did, THEN I'd talk to Sadoun about the issue. I, too , have the idea of a motorized 1.2M dish in my future, and I won't be sympathetic if a motor rated for the load doesn't perform up to spec . Hell, some people have a SG2100 driving a 1.2M dish
. Why bother with a higher capacity motor, if it's not really higher capacity.
:(
 
bloomdog

bloomdog

SatelliteGuys Pro
Sep 20, 2006
306
0
I have that problem, ocassionally, with different equipment. If I give the motor the command to go to my south satellite, it seems to clear up the problem.
 
Anole

Anole

SatelliteGuys Master
Sep 22, 2005
11,819
13
L.A., Calif.
it's all about leverage (and voltage)

People discussing this problem really should list their latitude.
The more southerly you are, the more the motor has to work, I think
And our Canadian cousins should skate by with little trouble.

Likewise, some folks who've built their own light weight mounts for big commercial dishes (Primestar, et al), have picked a geometry to put the dish more over and/or closer to the motor, instead of hanging way off it.
So, that could lead to a false sense of success for some more crafty builders.
 
C

coisado

SatelliteGuys Family
Apr 25, 2006
53
0
Hmm.. I have mine installed on 1.2m channelmaster powered by a twinhan 102g. I have never had any problems. I pull in sats from 72W to 148W. But then again I always tune to a H transponder when changing birds.
 
satcom1

satcom1

SatelliteGuys Pro
Oct 7, 2007
364
0
Near Chicago
One thing to check on is the backlash adjustment may have gone bad. On the DMSI site there is a detailed adjustment procedure for the SG2100. It may be similar to your motor An out of adjustment of backlash may cause the mtor control board to shut down as a fail safe. The new DG 380 on the Sadoun site has automatic backlash adjustment.
 
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