RC2000 dual axis antenna controller

[Captain Jack]

I was under the impression that Martin's motorised system will in fact be sitting on a standard polar mount with either a declination or elevation control for peaking on a signal. Yes, he could fit a skew adjuster on the LNB to take it a step further but with this kind of set up, there should be no issues with cross-polarisation anyway.

 

[Captain Jack]

This model is designed to work on a AZ/EL, if I put it on PM it wont work properly ;)so it wont work better on a PM, but thanks for your input my dish is only 1.8 Rimants

Oh I see... does that mean you're going to make a new mount for the dish?

 

[RimaNTSS]

This model is designed to work on a AZ/EL, if I put it on PM it wont work properly ;)so it wont work better on a PM, but thanks for your input my dish is only 1.8

That does not prevent you to have 2,4 (or even bigger one) installed on that AZ/EL -mount someday in the future. "Today" is not the last day of our hobby, I hope so.

 

[Archived-1]

To start with it will be sat on a PM, and if its software that changes it from AZ/EL to PM, it will stop on a PM, if the software is expensive and cheaper for me to make a AZ/EL I will make AZ/EL lol if that makes sense,

What ever it takes to get it running as it should I will do,

Now lets talk about LNB changers instead of dish arm mods, anyone know anything about them please

 

[Captain Jack]

Martin, when you investigate the software for the controller, see if it differentiates between an AZ/EL mount and a PM with elevation/declination control. I would suspect the differences are pretty minimal but... never know.

@Trust1 knows all about LNB changers! He created some great ones to change between C and Ku band LNBs on his Fibo 120...

 

[Archived-1]

Thanks A, Feedsat has to move his manually from memory his is AZ/EL sat on a PM, I don't want to make something I will buy it from what I can make out your talking best part of a grand for a cheaper setup, all info about the controller types and what they do can be found here.
http://www.researchconcepts.com/prod01.htm

 

[Captain Jack]

Ah, gotcha. There's an RC2000 POLAR listed on the site:

"the RC2000C POLAR for use with polar mounts which employ either a motorized declination or latitude angle adjustment"

Which is exactly what you want. But whether it's a software change or hardware is unclear.

The prices are eye watering.....

 

[Archived-1]

"the RC2000C POLAR for use with polar mounts which employ either a motorized declination or latitude angle adjustment"

Which is exactly what you want.

Mine does the same but on a AZ/EL mount Alex, but like I say it could just be a firmware change at a cost to make it work with PM, at the end of the day imho it will work better on fringe on AZ/EL and the mount is easier to make than PM.

 

[Archived-1]

Once its all setup I will let you have remote access to it now and again A

 

[Captain Jack]

I think the differences in construction between Az/El and PM with elevation control are pretty minimal. After all, a PM is simply an azimuth mount, which is placed at an angle. The major difference seems to be the maths inside the RC2000 controller. The number of pulses at the extremes will be different between a PM and a normal azimuth mount... and of course it needs to take into account the elevation control on the latter, whereas it's not necessary on a PM.

Either way, it will be interesting to see what comes out of this.

 

[Archived-1]

I think the differences in construction between Az/El and PM with elevation control are pretty minimal

Yes maybe, but enough for it not to work hand in hand, the reason for different models, they would not advertise different types if not, like I say feedsats wont work as it should unless he puts it on a AZ/EL mount and neither will mine

 

[BlindFaith]

I think the differences in construction between Az/El and PM with elevation control are pretty minimal.

I don't agree. A dual axis mount allows independent control of Az and El. Therefore an additional polariser is mandatory.

 

[Captain Jack]

Yep, you definitely would need a polariser there but the actual mount construction wouldn't be very different.

 

[BlindFaith]

Using a PM with an additional actuator for inclined satellites the polarisation error would be marginal ;)

 

[Archived-1]

They will no marginal loss when its setup as it should be its a 3 thousand pound bit of kit not a micky mouse thing, peeps just start typing when they have never even seen one before.

 

[Channel Hopper]

Using a PM with an additional actuator for inclined satellites the polarisation error would be marginal ;)

Not true, there are a few satellites out there with skew settings/angles that do not fall neatly into the cross hairs of the LNBF when fitted onto a polarmount dish. Whilst they may only be a couple of degrees off, this difference can cause issues with reception, moreso when one is looking at low symbol rate signals where there is a similar frequency on the opposite polarity, and upset by the cross pol rejection characteristics of the LNB design.

Sometimes the use of a four port LNB where the two local oscillators are running all the time will create more issues when receiving low signal transmissions, one reason why commercial installations still require highly stable DRO and narrow bandwidth LNBs for successful reception.

 

[moonbase]

.... Or if you seriously trowing it away, I will be the next one in line (after @st1 )

You are all behind me in the queue, check the thread...

There is no chance of Martin getting rid of this as sure as I got a hole in my árse.

 

[BlindFaith]

Not true, there are a few satellites out there with skew settings/angles that do not fall neatly into the cross hairs of the LNBF when fitted onto a polarmount dish.

Why not true? For those satellites you need a polariser anyway for optimal reception no matter what kind of mount construction. ;)

 

[archive10]

Sometimes the use of a four port LNB where the two local oscillators are running all the time will create more issues when receiving low signal transmissions, one reason why commercial installations still require highly stable DRO and narrow bandwidth LNBs for successful reception.

Aha! could this be one of the reasons things like the Inverto BUs perform best in single configuration?
Could also be a reason why feedhunters should not stick duo (or even quad) LNBs on their motorized rigs.

 

[archive10]

You are all behind me in the queue, check the thread...

There is no chance of Martin getting rid of this as sure as I got a hole in my árse.

they're not THAT expensive.
Search ebay.com with "Research Concepts RC2000".
Many are 2000A controllers, though. None seem to be polar mount optioned.

An while we're at it, you could go for a modern Titanium ASC-1 controller, which add in the benfit of DiSEqC support..