STAB HH120 not stopping

[cmorar]

Hi all

I have a really weird issue with my motor. Even if it moves and I am able to get signal quality sometimes up to 99% (I have a big 120cm dish and a HH 120) I am not able to get the motor to stop at the right azimuth angle. I tried both USLAS and DISEQ 1.2 with no luck to get the thing to stay where I say. I have a Pansat 3500 SD receiver, and an Invacom QPH the one that does both circular and linear.

My settings are for Phoenix AZ.
Latitude: 33.857°
Longitude: -112.101°
Name: Stab HH120
Distance: 37042km
Motor Latitude Angle: 33.9°
Azimuth (true): 180.0°
Azimuth (magn.): 168.5° using compass
Declination angle: 5.5°
Dish elevation: 24°


Now what happens

In USLAS mode - I used Echostar 7 (to lock on NASA - ANIQ F2/Ku which is my nearest south has no FTA feeds). This sat is as 119W, so motor should move 7.9 degrees West - it does move, the quality shoots for few second to 99% then is starts dropping back to 0% then it goes back and so on. It just keeps oscillating between 0 and 7.9W. I managed to somehow catch the moving beast and stop it close to 7.9W (around 60% quality) and I disabled the motor/positioner setting in the installation menu. And now i clary can see NASA tv on echostar 7. Same thing happens with T5 for example (which is darn hard to catch even whitout a motor ) - i get close to 75-80 and back down as the motor decides to not stay on the right angle.

In DISEQ 1.2 mode. You are supposed to be able to move the motor degree by degree est west. I hit any, est west. Hold a bit on the remote, I see the antenna moving towards the right spot, it starts getting signal, quality jumps again to 99% and as son as I take my finger off the remote instead of stopping the stubborn machine goes back to 0 and it starts oscillating between 0 and approx 5 degrees for a good while until it stops. Of course i saved the good position, but hey. I say go, it goes or few secs to the right spot then gets back to 0-5 movement until finally stops in 0. Of course i disabled limits and did all - still no way to get the beast to stop

Now I am starting to get really frustrated .... ... Which is understandable after a weekend on antenna swinging ..

Anyone any idea why this happens ? Any tip is welcomed ....

Thanks
Calin

[cmorar]

Now you might find it funny .. as an old man would say .. "Read before you post !!" After I posted the question I browsed through the rest of the posts and VOILA!!! I discovered someone with exact same problem as me .. reason - cable too long from receiver to the motor. So I said ... let's try tat one too.

So, take a flashlight (is night here now) .. go out .... unscrew the cable from the house inlet and pass the thing in the house on the window hook it behind the receiver and bang .. the sky is coming down the pipe from all positions as the motor stops where it should

As Homer wold say ... Steady, steady, steaaadyyy ... DOH!!! is not that .. is your cable dude!!!

Well lesson learned // the cable DOES MATTER when you have a motor is not enough just a huge dish that gets you in trouble with the HOA // you need a good and not too long cable too.