Got a C-Band dish...now some questions

[WyrTwister]

Toshiba only goes from 0-90
There is a way to set it for normal or inverse

You may still be going through more than 90 degrees of movement , which you would need to be .

I have a little Chinese analog receiver that does skew but no dish movement .

With the LNB , feed horn rotated cottectly for skew , the numbers come out something like - 22 to + 23 . This obviously adds up to 45 , which is not enough for changing from H to V . My conclusion is each number unit must = 2 degrees ?

If yours is something like that , them maybe 90 = 180 degrees ?

It has a 400 or maybe a 500 channel memory . Each channel can be individually programed . For C or Ku , polarity , frequency , DV Voltage ( 13 or 18 volts ) , and a bunch of other things . So you could use it for either a LNB or a LNBF ( voltage switching ) .

Since the previous owner had already programed a bunch of the lower channels for Ku analog , I started C band at channel 300 for TP # 1 -22 skew . 301 was TP # 1 +23 skew . Al the way through all the C band TP's .

That way I could hunt sats that had normal or reverse polarity .

I used this receiver on the 90 cm mini-bud .


By the way , one of those sats has a WB HD feed that looks nice on a PCI DVB-S card & computer monitor .

Best of luck ,
Wyr

 

[Mr Tony]

You may still be going through more than 90 degrees of movement , which you would need to be .

I have a little Chinese analog receiver that does skew but no dish movement .

I have an analog receiver like that too. No name opn it but has the polorotr function on it. I don't like it as you have to type in the IF Frequency and not the frequencies we all know.

With the LNB , feed horn rotated cottectly for skew , the numbers come out something like - 22 to + 23 . This obviously adds up to 45 , which is not enough for changing from H to V . My conclusion is each number unit must = 2 degrees ?

If yours is something like that , them maybe 90 = 180 degrees ?

its very possible. My Toshiba goes from 0 to 90. Since skew for G4 for me is +5, it locks on 3. If I get to about 15-17 you can't see the picture if I am on a H channel. I'll take some screen shots today

It has a 400 or maybe a 500 channel memory . Each channel can be individually programed . For C or Ku , polarity , frequency , DV Voltage ( 13 or 18 volts ) , and a bunch of other things . So you could use it for either a LNB or a LNBF ( voltage switching ) .

mine only has 250 but it can be for C, KU, standard LNB or universal and can take a diseqc switch. I had to rig the plug because it was a Europe plug (120v though)
I used it for analog KU...have SBS6 logged in and one other but I still have ot do the same thing with inverted polarity

 

[WyrTwister]

I have an analog receiver like that too. No name opn it but has the polorotr function on it. I don't like it as you have to type in the IF Frequency and not the frequencies we all know.

That would be a pain , But you would only have to do it once . TP 24 is 970 mhz . For each TP below that , add 20 mhz to the previous number . Or like I did , the same TP frequency twice ( channel ) , one with H skew & one with V skew .

And if you end up using the LNB , I think you said it would operate the polarlotor ?

Does it do voltage switching , too ?


Mine will not do a diesq switch . Will do a 12 VDC switch ( whic I do not have ) . Can not remember about a 22 khz switch .

Best of luck ,
Wyr

 

[Mr Tony]

yes the little no name analog box does
So do my 2 Toshiba TRX-1420's and the Uniden 4200

The uniden is a simple unit...it was designed for one satellite reception (like G5)

 

[WyrTwister]

yes the little no name analog box does
So do my 2 Toshiba TRX-1420's and the Uniden 4200

The uniden is a simple unit...it was designed for one satellite reception (like G5)

Simple can be an advantage , especially in the beginning .

If you ever get the opportunity to go to a larger dish , I am blown away by the perfermance of my Zenith perferated metal dish .

Bset of luck ,
Wyr

 

[Mr Tony]

that will only heppen if I move (somewhere with a big back yard, a good southern view and no HOA)

The Toshiba is nice as I already have G4 logged in and I can change skew and see it on the screen change (it also has auto skew)
The Uniden doesnt do that

 

[ken2400]

Now that you are getting stuff Ice. Try covering the dish with something like a sheet to hide it. It should not cut the signal too much. You might also try something that hangs down from the top of the deck?

It's not really hiding it, it just makes so people can't see the dish and most will stop thinking about things if they can't see it.

Keep up the good work. :up

that will only heppen if I move (somewhere with a big back yard, a good southern view and no HOA)

The Toshiba is nice as I already have G4 logged in and I can change skew and see it on the screen change (it also has auto skew)
The Uniden doesnt do that

 

[Mr Tony]

eh, the neighbor doesnt bother me anymore...he's moving soon

the other neighbor I just talked to today and he doesn't care. As he said "you cant see it from the road, the driveway and its not on my deck so I could care less"

 

[MikeI]

Tony -

How easy is it to move the dish around the yard once installed?

Where did you buy your c-band lnbf? Sadoun doesn't list any c band lnbf's. How would I know which one to buy for this dish for the best viewing?

 

[Mr Tony]

Mike
Mine is on my deck and its pretty easy to move along the satellites. I just grab it by the "O" ring that the pieces are attached to and turn. Right now I'm just trying to get my true south and its neighbors so its just a azimuth move

The LNB I had on there was the DMSI 421. It has to be manually skewed. The one I'm using right now I got from DrHydro. (that was a 25 degree one with a polorotor...the DMSI is a 15 degree with no polorotor)

 

[MikeI]

Thanks. Do Chap feedhorns fit on the dish?

 

[Mr Tony]

yep.

 

[drhydro]

Iceberg, glad to hear that unit is working good for you. Sorry to hear that you let the smoke out of the skew portion of your pansat, letting the smoke out is never a good thing :-(

Do you find having the polarotor easier to use than manually adjusting skew? Also, how are you doing as far as dvb reception? I have a 6'er I plan on planting in the next month or so, really want to know if it is worth it before I spend a good chunk of change to get a backhoe for a day to dig the hole. Manually digging a hole where I live is an excellant exercise in controlling frustration (can we say glacial valley with LOTS of rocks?).

 

[Mr Tony]

DrHydro....It was MUCH easier.

I hooked it up (correctly) and hooked the polorotor wires to my Toshiba TRX1420. Found G4 manually with the dish and selected it on the Toshiba. It auto skews for optimum signal and boom...done for analog. I hooked it up to my old Uniden 4200 that has manual skew button and that worked too. Slaved it through my Pansat 1500 and analog is working great

Digital I am still working on. I got a few digital feeds but not the Networks that I really want. Still working though.

 

[drhydro]

Iceberg, glad to hear it made life a little easier. I am looking forward to seeing just how much DVB you can pull in with that setup. If you need help finding strong TP's to look for let me know what sat your aiming for and I can find a strong tp on it for you.

 

[digiblur]

4:2:2 will come down the line.

Now I just need to do some consolidating of wiring...thank god for a suspended ceiling in the basement and easy access to the living room

Buddy of mine asked me the other day "do they make a wall plate with 2 connections?" I told him yes and showed him my rigged 4 coax connection wall plate

It's called a drill, barrel connectors, and a blank face plate. I've got a 2 gang box built for CAT5, 6.1 surround sound, and 6 RG-6's.

 

[Mr Tony]

quick question.....on the dish itself does part of it mainly work with Vertical and the other 1/2 horizontal (especially on digital)?

Reason I ask is I have been scooting across the top of my arc (G11, T6, G3, T5, G4) and it seems like on each of these half of the channels come in really good and the rest come in like crap (analog)

Here is an example
G3 V comes in good...H sucks
T6 H comes in decent (can get PBS really good) V sucks
G4 V comes in good on digital and analog....H sucks on digital (works on analog)

I stopped for the night but on G4 Vertical I got 4 feeds all at 45-50 quality
On Horizontal I didnt get SQUAT! The best I ever got was a 12 quality

I'm worried that the bottom part of the dish might be under the roof line...so how do I figure that out? Take a protractor at 38 degrees (my elevation for G4) and a board and see how much the roof cuts off?

 

[PSB]

"Take a protractor at 38 degrees (my elevation for G4) and a board and see how much the roof cuts off?"

Yes! I have been saying that all along, my fear is about 1/3 of your dish is blocked!

Any pictures yet?

 

[Mr Tony]

tomorrow I'll take pictures

crap so the top 1/2 of the dish must do one polarity and the bottom 1/2 is the other polarity?

 

[PSB]

No, but you want to get as much signal as you can. Especially when you are messing with your skew and are not quite set up yet.

Can only help!