Just Acquired A 1.2M Channel Master

[Archived-1]

Forget anything further west than 63° and exactly how flat is your east horizon taking into account your fence, next doors, their neighbours and any hills within a mile or two?

thanks aceb but i think we sorted this in post 62 and 63

If the other hole is closer to the axis it will move the dish further.

The problem is starting the setup from the centre satellite. Now you have it tracking the arc here is how to set it up. Drive the actuator all the way closed until it hits the hardware limit. Now click it out 10 counts. That allows 5 counts for software limit and 5 for first satellite. Now with the actuator set like that loosen the clamp around the actuator and adjust the dish until it is on the furthest east satellite you want to receive.

thanks huevos but i still dont think an 18inch jack will travel that far ? if not i will get a 24inch before i start.

 

[Huevos]

75E to 75W C/J I know theres not much beyond 45E/W but i want to get everthing i can thats out there.

That is a huge range and probably beyond the scope of the mount. 75 to 75 is 150º of arc and requires 160.5º of polar axis rotation. Even if the mount allows that it is going to pretty close to going over centre at one end of the arc or the other, and even if you could make it work, it is going to be loose as anything at the western end of the arc. On my Gibertini 18" runs 57E to 58W. My actuator is 24" but the mount runs into itself after this even though I clearanced it a lot.

 

[Huevos]

thanks huevos but i still dont think an 18inch jack will travel that far ? if not i will get a 24inch before i start.

How big is the actuator you have now? If it is 18" use that on the inner hole and it should give you plenty of travel. And anyway like the others have said there's not much at the western end of the arc (except in C-band and you need a bigger dish for that).

 

[aceb]

Interesting info Huevos, is that on a 1.2 with the Gib PM adaptor? So no matter how it's set the mount can't go further than 57E due to mechnical constraints or does it just need extra creativity when fitting the actuator? If my HH180 fails the only other option will be a PM but there's no point getting the Gibertini adaptor if I can't get out to 70E on it.

 

[aceb]

thanks aceb but i think we sorted this in post 62 and 63

Well I saw you post about your fence and pole length but the photos suggest your dish is quite low. 75E is for all intents and purposes horizontal from your dish, the top of the fence and anything else will have to be lower than the bottom of the dish for you to get it.

 

[Huevos]

Interesting info Huevos, is that on a 1.2 with the Gib PM adaptor?

Mount for Gibi 1.2m & 1.5m is the same (apart from the arm). I'm at 38.5N and 0.5W. From here 57E means the polar mount has to face 63.5º east of centre (at your latitude it would only be 62.3º). Here are a couple of photos of the mount facing 57E. I doubt you would get anywhere near 70º out of it even if very clearanced. For that I'd suggest a Jaegar 1224 if you can get hold of one, or the Moteck substitute.

P.S. what's on 70E.

 

[RimaNTSS]

2 martin-f: Do not look for bigger actuator. 18' you have will be more than enough to get maximum arc. I would say, even with 12' actuator you can tune your dish to the same arc. And with 24' arc will be exactly same. Only difference is how your system will withstand wind load. Of course, to use different sizes of actuator you need to adjust mounting-holes. Bigger actuator will move your antenna slower and vise versa. So, adjust your holes!

BTW I have 18' actuator on 1,5m antenna and it moves it from 30*W to 90*E (could adjust it for wider arc, but have some obstacles towards East and West). Same actuator worked some time on 1,8m antenna for same arc.

 

[Archived-1]

thanks lads, i think what i need to do first as mentioned (thanks) is move to the other hole and see how far i can get E then maybe move the motor, as its set central atm,

 

[digi247]

My gibby polar mount goes to around 65° both sides before it catches the inner plate bolts as that is where i set the limits any further and the mount just stops on the inside of the mounting plate.

 

[Archived-1]

My gibby polar mount goes to around 65° both sides before it catches the inner plate bolts as that is where i set the limits any further and the mount just stops,

thankyou,
i think i have measured the motor wrong and ive only got 12 inch :-0, i will have a re-measure later today now i know what to measure :-HB

 

[digi247]

thankyou,
i think i have measured the motor wrong and ive only got 12 inch :-0, i will have a re-measure later today now i know what to measure :-HB

Hi Martin,

Not too sure if you want to keep keep the 12" and lose a little on the west side, As i did a customers on his 1.2 CM and adjusted so he could get around to 57° east but obviously he lost a little on the west side and it maxed out at around just past 37.5° west, Like you say if your going to go further then at least go for an 18" Jack, if you do change the jack i would recommend you go for an Official Jaeger Superjack as it will last 10 times longer than the copy one you posted the link for on the bay.

Regards

 

[Archived-1]

thankyou digi247, yes the pull is only 12 inch what a plonker i am,

i have adjusted the arm to around what you say, but i am not happy ive got a good line of sight and want to use it, i will have to get the credit card out and go for the Jaeger Superjack then :-),

ive made a miss calculation with the height of the base mount so i will have to take it down and get the pole lengthened by about 1ft when the weather gets better :-(,
thanks again

 

[Lazarus]

You're not alone in meticulously planning a project and then, after the initial glow of satisfaction, beginning to realise the starting point wasn't the best. If only we were blessed with hindsight!

 

[Archived-1]

the first picture the dish is at 42E, 4 clicks E and its nearly hitting the pole its mounted on (picture 2), ive set stops there, i can get the pole welded but i wish i would have seen this coming :-(, live and learn :-).

 

[RimaNTSS]

Yes, seems you need your pole longer. But I would not advice to open your wallet and buy new actuator. That one you have looks pretty good, and I still think that 12' is more than enough for 1,2m dish.
You've got some snow This morning we had -24*C O-no

 

[Archived-1]

Yes, seems you need your pole longer. But I would not advice to open your wallet and buy new actuator. That one you have looks pretty good, and I still think that 12' is more than enough for 1,2m dish.
You've got some snow This morning we had -24*C O-no

the 12 inch actuator wont reach the sats i can get rimaNTSS, i have the perfect line of sight and want to make the most of it, i know theres not much on them but i like to play :-). if the 12 inch would reach them i would be happy but it wont, its only 64 pound for the new one and i got the setup for next to nothing in the first place,

yes its not stopped snowing here for the last 24hrs :-0, -24 stay indoors m8 thats cold,

 

[RimaNTSS]

the 12 inch actuator wont reach the sats i can get....

Who said so? Let's make a bet that if properly adjusted your 12' will get all sats you can see. :-beer

 

[Archived-1]

without bodging something it wont :-beer , its adjusted atm to hit 30w its at the end of its limit at around 33w when i am round to 42e theres not much pull left.

 

[RimaNTSS]

its adjusted atm to hit 30w its at the end of its limit at around 33w when i am round to 42e theres not much pull left.

So what? Guess what will happen if you change positions of 2 holes to which actuator is fixed?

 

[Archived-1]

if i move to the inner hole i get less of the ark ive tried it :-)