1.8 Channel Master. Adding inclined tracking?

mikeysat · 03-10-2007

Hi,I have a 1.8 Channel master which is currently moved across the arc using an large actuator. I am toying with the idea of adding inclined tracking to it.The only idea i have so far is to replace the inclination bolt with another actuator.Has anyone tried this with any sucess before or is the a smarter solution?.Thanks Mike

**Topper** · 03-10-2007

Well lets put it this way, it would have to be a very special motor with gearbox to make the miniscule alterations for an inclined orbit adjustment with any accuracy. It would also have to have tremendous torque to raise the weight of a 1.8mtr, I'm not saying it cannot be done indeed I am pretty sure someone posted on here a while ago whose kit could do just that but for what you get back it seems a lot of messing around, what exactly is it that entices you to go down this road?

***wod*** · 04-10-2007

the jaeger 1224EL motor does inclined orbit but think the andrews dish is too heavy for it even thought the spec it says 1.2m-2.4m dish

**keano** · 04-10-2007

Guys my 2.4mtr CM dish as a arm each for both east west and incline decline.

It works perfect for incline and decline.

mikeysat · 04-10-2007

Hi,The main reason is to follow 8 and 20 west it doesnt move a huge amount but i am currently adjusting it manually which is a pain,as it throws my positioner out of sync.The 2.4 c/m. Any chance of seeing the setup behind the dish also what size jack are you using?.Cheers

**keano** · 04-10-2007

yes m8 I will get you a picture tomorrow when I get home from work.
Finish at 2 on Friday, so it gives me 3 hours before wife gets home.

We've had words again tonight about the dish, I may have to look at lowering it in to the ground, so a bit of digging this weekend might be in order.

She is complaining about the height

Frigging women !

***CROSSBONES*** · 05-10-2007

digging this weekend might be in order.

Put her in the hole instead mate!

Would like to see some pics too.

**keano** · 05-10-2007

Here you go m8,

Pictures for you of the two arms moving my dish.

**TJExcalibur** · 05-10-2007

Some dish! Don't the neighbours complain or does the trellis hide it well but it must affect the signal.

Originally Posted by keano

Here you go m8,

Pictures for you of the two arms moving my dish.

**keano** · 05-10-2007

Neighbours have not said anything its just the bl**dy wife.

The trellis is at the side and the dish is mainly on 7.0w so trellis does effect it.
I am thinking of going in front with trellis and plants because the signal actual comes from above and not directly in front.
I can stand right in front of the dish where the LNB is there is no loss of signal.

***CROSSBONES*** · 05-10-2007

Nice pics!

So its not on a polar mount, Is it hard finding sat`s with the 2 motor`s?

As you have to adjust both motor`s every time you move the dish.

***2cvbloke*** · 05-10-2007

Just out of curiosity, there's a DOS program I posted a while back called FODTRACK, which is used with 2 axis HAM radio antenna dishes, would that be of use with these setups?

Here's the homepage for it:

_http://ludens.cl/Electron/fodtrack/fodtrack.html

Here's an adaptation of it's use:

_http://www.geocities.com/yyz228/

**keano** · 06-10-2007

Originally Posted by CROSSBONES

Nice pics!

So its not on a polar mount, Is it hard finding sat`s with the 2 motor`s?

As you have to adjust both motor`s every time you move the dish.

At the mo m8, I have only gone from 1.0w to 7.0w.

It went from 7.0w to 4.0w with out having to use incline or decline.

The only problem is the slot on the mount are small and will only allow lets say 5.0e to about 12.0w.
If thats make sense.

I have ordered a feedhorn from snap and can't wait to try it because at the mo current feedhorn is not good enough.

My and wife had a very long chat last night and have come to a comprise I have to do my best to hide it ( don't laugh ) within the next month.
So it will be a case of lowering it and getting conifers/plant to put round it.

06-10-2007

The 2.4m andrew (channel master) are good dishes i have installed loads in the past for one way rx only and two rx/tx and they work well,

They need the andrews feedhorn with a F/D of 0.66 with a VSWR of

1.3:1 otherwise your 2.4 will act as a 1.8m dish,

The feedhorn you need is below
Andrew Part number: 611-6060-07
Corrugated ku-band linear feedhorn
vswr 1.3:1
F/D 0.66

mikeysat · 06-10-2007

thanks for the pictures iou.RD.Are you able to get them any cheaper as your in the installing game?.I would like to get oneand trade my 1.8 in at the same time if you know of any one whose interested.mike

***CROSSBONES*** · 06-10-2007

Here are some pics of the small C/master polar mount with decline angle motor fitted.

Might give you some idea`s.

mikeysat · 07-10-2007

Originally Posted by CROSSBONES

Here are some pics of the small C/master polar mount with decline angle motor fitted.

Might give you some idea`s.

Hi Crossbones,Thats a good piece of ingenuity. I was unable to see exactley how u managed to get inclination to work.Have you a pivot pin or something similar.Mike

**keano** · 07-10-2007

Originally Posted by Rd100

The 2.4m andrew (channel master) are good dishes i have installed loads in the past for one way rx only and two rx/tx and they work well,

They need the andrews feedhorn with a F/D of 0.66 with a VSWR of

1.3:1 otherwise your 2.4 will act as a 1.8m dish,

The feedhorn you need is below
Andrew Part number: 611-6060-07 611-6062-07
Corrugated ku-band linear feedhorn
vswr 1.3:1
F/D 0.66

Thanks m8,

I have ordered one from snap so hopefully things should be OK then.

***CROSSBONES*** · 07-10-2007

Thats a good piece of ingenuity. I was unable to see exactley how u managed to get inclination to work.Have you a pivot pin or something similar.Mike

Its not my dish, its from a member called scopus. Maybe if you contacted him he could give you more info on it

07-10-2007

What is the point in adding inclined tracking on a small ku-band 1.8m dish i could see the point on a large C/KU BAND 3M 4M + dish but on a small dish is the uk there is no point,

**TJExcalibur** · 07-10-2007

An interesting point but can you tell me why? I read somewhere a while back that adding inclined tracking enabled adjustement if needed without climbing up to the dish. As the cost of a 1224EL is little more compared with the cost of 1224 I thought it was maybe worth it.

Originally Posted by Rd100

What is the point in adding inclined tracking on a small ku-band 1.8m dish i could see the point on a large C/KU BAND 3M 4M + dish but on a small dish is the uk there is no point,

mikeysat · 07-10-2007

Originally Posted by Rd100

What is the point in adding inclined tracking on a small ku-band 1.8m dish i could see the point on a large C/KU BAND 3M 4M + dish but on a small dish is the uk there is no point,

Rd,For someone who installs dishes i am surprised you ask such a questionYou can find alot if you know where to check espically in the u.k.

07-10-2007

I don't just install dishes but all sort of broadcast gear,

What i am saying in the ku-band over the uk there is not enuf inclined orbit satellites that need a small dish dish that need tracking i can understand on a large dish but for a 1.8m on ku-band its pointless

Originally Posted by mikeysat

Rd,For someone who installs dishes i am surprised you ask such a questionYou can find alot if you know where to check espically in the u.k.

07-10-2007

If the polar mount or HtoH mount or gear driven mount is set up good in the first place then you would not need it,

The type of dishes that need inclined orbit tracking are not the type you could put on the side of your house,

I have installed alot of large 2 axis dishes and they have inclined orbit tracking to track inclined orbit satellites and to adjust as the beamwidth is so tight, When i use to have a 3.1m dish a few year back as the beamwidth was so tight if you was on say eurobird 28.5 east you would have to move the dish to watch any thing on the astra birds at 28.2 east due to the beamwidth the bigger the dish you go the narrow the beamwidth gets,

Also just to add the only satellites which would need inclined orbit track on a 1.8m dish in the uk are below but i do not think any channels broadcast on them so it is pointless,

Optus A3 inclined at 8.92°
Telecom 2C inclined at 3.51°
Telstar 11 inclined at 3.12°

On my new prodelin Series 1374-1375 3.7m dish it will have inclined tracking but this is due to the size of the dish you can see the dish here http://www.gdsatcom.com/Antennas/Dat.../3-34-37ro.pdf

I did want to get this one and could have had it http://www.gdsatcom.com/Antennas/Data_Sheets/45ro.pdf but that is OTT,

Originally Posted by TJExcalibur

An interesting point but can you tell me why? I read somewhere a while back that adding inclined tracking enabled adjustement if needed without climbing up to the dish. As the cost of a 1224EL is little more compared with the cost of 1224 I thought it was maybe worth it.

**TJExcalibur** · 07-10-2007

It is nice to have it clarified. Being a newbie it takes ages to get all the info together and to avoid wasting money on not needed gadgets. Will stick to the 1224.

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