Tuner configuration

M

MrDizzle

Vu+ Newbie
I have a question regarding tuner configuration. I've had a Vu+ Duo box for many years now. An engineer came and installed a motorised dish on my roof and set up the box. Since then I've re-flashed the box many times and have configured the tuners like they were before, using USALS and putting in my longlat coords.

It all works fine, but I was tweaking the longitude value a little bit and 19.2e came in a little stronger, so I was tweaking more an more, i got it to 80% signal strength when it was on 50% strength on my default set up.

Oddly, 16.0e which I didn't receive now comes in. Now the value that I'm changing it to before 16.0e comes in is huge (from 58.010 to 68.010)

I'm probably doing something wrong during the setup. I never move the dish manually or reset it manually when I flash an image as I just imagine because the dish has been set up properly in the first place, the motor knows where it is and so will the box.

I'm just trying to understand a bit more about how it works as it seems strange to me that changing the longitude value by such an extreme amount would do anything useful.

Here's hoping someone can explain it, or point out the obvious mistake I'm making/overlooking.
 
Your geographical location can be expressed by map co-cordinates, Latitude, and Longitude, for example, if in the UK, you might be located at Latitude 54.5, Longitude -1.24, these figures are then entered into your receiver, telling it where you live.
Thus you enter the USALS co-ordinates, Latitude 54.5 North, notice the negative value, for the Longitude, -1.24, positive Longitude readings = East, negative = West, so you enter 1.24 West.
If the dish/motor has been set up correctly your receiver now works out where the satellites are located, and moves the dish to them, based on these entries.

Over time the dish can move, due to weather, especially if the dish/motor is positioned high up, and not sheltered, at which point you can compensate, slightly, by adjusting your Longitude position, or using the tweaking options, in the motor setup menu.
If your dish has moved it would be advisable to service it, re-align it, tighten the brackets, and bolts, and check for any slack, in the motor.
You should also check the cable, and connections, for any sign of damage.

You can also use Diseqc 1.2, to move, the dish, using your receiver, then manually store your satellite positions, at different numbers, e.g. Astra 1, 19.2E, at 1, 23.5E, at 2, 28.2E at 3, etc....
 
Thanks for the explanation, Mick12334. I totally understand the long lat thing, I just couldn't work out how changing the Longitude by such a huge number would have success. For example, from 58.010 to 68.010 is the different from the midlands, uk to the faroe islands.
 
58 cannot be your Longitude, it has to be your Latitude.
The approximate Latitue, and Longitude, for the Midlands, UK, are:
Latitude 52.4 North, Longitude 1.8 West.
You appear to be changing your latitude, not Longitude, settings, unless you're not in the UK.
 
Sorry, it was Lat. 53.010 is what I have set, but I wasn't getting 16.0e at all. Setting it to 68.010 I got strongest signal on 16.0e, but I was just trying 30.0w which was low signal, so I put my Lat to 60.0 and 30.0w came in nice, but obviously reduces 16.0e. It's like a balancing act! I'm interested in setting these positions you mentioned. Are these offsets stored in the set top box, and if so, is there anyway to back them up (in case I reflash)? I assume there has to be a better way of fine tuning than changing the Lat and going back to the channel to see if the signal has increase *blush*
 
You shouldn't be changing your Latitude, but your Longitude, slightly.
You can change your motor settings to Diseqc 1.2, by changing your Tuner options from simple, to Advanced, and seleting Diseqc 1.2.
You can then move your dish, using the options in Positioner Setup, and store each satellite individually.
You should still physically check your dish, motor, cables, and connections, as dish maintenance is important, and it sounds like your dish has moved, or not been set up correctly.
 
I suppose it makes sense that it would be Longtitude as that's the path the dish moves. I've achieved optimal signal on the sats by changing the Longtitude slightly. Will inspect my dish and show it a bit of love. Luckily it's on a flat roof so easy access. Thanks a bunch for your help, Mick!
 
Check for any play, in the motor backlash, if your dish has moved, or any of your bolts are working loose.
Also check that your pole is still plumb.
 
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