Dish install location - Advice before i do the install - Pictures attached

[Lazarus]

Same way as I advised earlier re BADR (26 deg >> eg 25.6 deg) .............. just Edit the "Satellite" from 16.0 deg to 15.8 deg so the box/motor thinks that's where it is.

 

[techmob]

turns out i can get 26e without any tweaking

ADEN clears with 33-35% signal

can't see anything on 7w though

 

[TJExcalibur]

turns out i can get 26e without any tweaking

ADEN clears with 33-35% signal

can't see anything on 7w though

7w is very strong here.

 

[techmob]

lucky you, probably because i am North i can't see it...

what do you guys think of this

_http://www.creativesatellite.co.uk/contents/en-uk/p1773_Satcatcher_DigiPro_IIIS_Digital_Satellite_Meter.html

is it a good meter for a non pro user like myself?

 

[Lazarus]

turns out i can get 26e without any tweaking

ADEN clears with 33-35% signal

can't see anything on 7w though

Good stuff - the acid test if whether you can resolve the MBC Channels which are a little weaker than many. Getting those is a sign of spot-on alignment.

 

[ian xtv]

For me 26 East MTV ARABIA is best signal on my 1m Dish = 81.3-82.5% MBC channels = 80.3-81.3% This was after a lot of dish tweaking to get the strongest signal i could squeeze out of my Dish

 

[techmob]

MBC i get 28-30% signal

however that is the least of my concerns right now. the wind is making my dish wobble and i lose signal.

for example even on bbc thor with 98% it drops to 0% and then back to 98% because of the wind. obviously i lose picture because of this

it is happening on every satellite.

the wind is quite bad here however at my old house similar area to the sea i never had that issue with my 80cm dish

maybe there is more wobble on the dish because it is larger?

i was hoping a bigger dish would help with issues like this, i.e signal drop in bad weather however it seems the opposite.

video to follow but please don't judge my cabling as i have not finished yet

_http://www.mediafire.com/?t8ofbwh3dy47979 <- please see the video (is that normal for the amount of wind? you can see the tree opposite over the road)

i never used to have that movement on my 80cm dish.

this dish a gibertini 1m



Moderation


Live links are not permitted here. I have disabled it for you on this occasion.

 

[Lazarus]

Bigger dish = narrower beamwidth >> displacement by wind consequently likely to have far more of an effect than on a smaller dish. The greater gain of larger dishes is annulled if it isn't robustly mounted and motor backlash minimised.

 

[techmob]

so bigger is not always better...

could you look at the video and let me know if you think that is to much movement. i am debating getting on a ladder to see if the dish fixings needs tightening (not a good idea)

 

[satelliteman]

Something's not right, those TK fixings do not look like they have been installed securely, especially the T.

I had my Gib 100cm on a TK facing open fields, and never had that kind of movement; okay, it was on a jack but still...

 

[techmob]

sorry about the live links...

i went up on a ladder just now and it seems as if the motor arm is moving when the wind picks up. if i hold the motor arm and the bracket of the dish attached to the motor arm still then only the dish face slightly wobbles.

it seems the strength of the wind is causing the dish to move the motor arm.

there is only a slight bit of play on the motor arm which i expect is being pushed to it's fullest

The T bracket was the one i wanted to replace with a K but my original K and the new replacement K were not exactly the same, the holes where the pole goes did not line up so well, so my friend (more experience than me) advised i should go with the original T and K.

 

[TJExcalibur]

Fair bit of wobble and I would be concerned about the cable hanging from the lnb, could even be the problem.

 

[satelliteman]

Shouldn't get that amount of backlash from a new DiSEqC motor. The video does show some movement on the stub but as mentioned, are the brackets / mast also secure. If it's not it'll add to the movement of the motor stub. My other question is what size diameter is the mast you have used; thicker the better.

 

[techmob]

so the lnb cable could be catching the wind?

i made sure to tighten the brackets to the mast. one side are wing nuts which i cannot righten anymore with my fingers and the other side normal nuts which i nipped up even more until real tight

the mast is nice and secure and the mast is a proper scaffolding pole (think about 2", will measure now)

far to much movement for my liking i am going back on the ladder

 

[techmob]

2" diamater the mast measures

_http://www.mediafire.com/?bskbz0xycl4td67video from underneath. it is hard to see from that video but everything is moving in one motion up to the point of the fixed part of the motor

the dish moves in sync with the motor arm, if i secure the motor arm with some friction then the dish does not move as much and only the dish face has a slight wobble

on the video the motor arm/dish bracket/dish face move

the pole and motor fixings to the mast remain still

not sure what to do about this as it seems to be the motor. i have the same motor superjack dg120 and the motor arm has more movement than the one up.

everyone i speak to says you will get a bit of movement in the motor arm.

what do i do?

thanks

 

[satelliteman]

Take the motor back and get a replacement...or attempt to tighten the backlash yourself [thread somewhere in this section] ;)

 

[techmob]

the motor is not a brand new one. had it a few years.

so i guess i need a replacement motor then, will look for this backlash thread however looks like i am back to square one again by removing the dish and motor (again)

i would be better to buy one of these big motors rather than diseqc?

i have no idea about the other motors, what should i get if i am to replace this. my receiver is a dm800 and i guess this would work no problems?

thanks

 

[aceb]

so the lnb cable could be catching the wind?

A tidy solution on the 1m Gib is to slide the coax up the middle of the boom, you'll need to take off the F plug to do it so remember to unplug the other end first.

 

[satelliteman]

Yes they do a polar mount for that dish, although you might find it difficult to install without being over guttering height due to the actuator overhang swing.

Get yourself a new TM2600, should do well.

 

[techmob]

Looks like I am going to buy a tm 2600 motor

My concern is that it could be the location of the install.

South facing wall, near a school with a large open field, where the wind can tunnel down our cul-de-sac. Also I have the winds from the sea going down the side of my semi detached house which can be strong.

Maybe I am over worrying, what I am asking could the location wind be that strong that it could cause I usually sound motor or even the tm 2600 motor arm to have that much backlash

Thanks