Bracket & switches

[Emerald_Boar]

Basic Info:
Satellite---------------------True Azimuth---Compass--- Dish---Skew
72W - AMC 6.........................166.6.............175.3.......39.5 ......-9.5
83W - AMC 9.........................182.6.............191.3.......40.4 ......+1.9
87W - AMC 3.........................188.4.............197.1.......40.1 ......+6.2
97W - Glorystar......................202.5.............211.2...... .37.9......+16.3
125W - G14...........................234.6.............243.2....... 23.9.....+36.6

Assuming, That i aiming at 87W (LPBS DVB-s2).

Would be it be possible to pull all above satellites?

How many degree off can i be to effectually receive signal?

Basically, where would the LNBf needed to be located on the brackets for proper satellite reception. (use pic)

SWITCHES
Are any of the following the switch the same? Is tone burst the same switch as a switch 21?

tone burst, 0V/12V, 22 khz
switch 21, switch 44, switch 42, switch 64

Second thing. I been noticing that when Universal is selected for LNB. That the setting for 22 khz switch is set to "auto". (note: that when i use an standard LNB i can turn on/off the 22khz) How does one use an universal LNB with 22 khz?

TIA,
Al

[cyberham]

Originally Posted by Emerald_Boar

...I been noticing that when Universal is selected for LNB. That the setting for 22 khz switch is set to "auto". (note: that when i use an standard LNB i can turn on/off the 22khz) How does one use an universal LNB with 22 khz?

22 kHz OFF selects the low-frequency band of a universal LNB. Local oscillator in this configuration is 9750 MHz and band tuned is 10700~11700 MHz. 22 kHz ON selects the high-frequency band of the universal LNB. Local oscillator is 10600 MHz and band tuned is 11700~12750 MHz. Auto means that the receiver will automatically turn 22 kHz ON and OFF to select the band range. In North America, just set the 22 kHz ON (tunes high band only), then select a local oscillator of 10600 MHz since there are no low band active transponders so this will speed up your blind scans.

[Keith Brannen]

Unfortunately, I see no way it can be done, except on three dishes. Alternatively, you could get a motor for a dish to get them all (and others, as well). Personally, I have multiple dishes and multiple LNBs (7 dishes looking at 17 satellites).

Basically, with multiple LNBs on a dish, 6 degrees off-centre is optimal (little signal loss), and 8 degrees is doable, but there may be significant signal loss, depending on the satellite/channels you are trying to get. Some satellites can be further off than others (for example, 72 is very strong in our area, and can go farther off-centre) while some have weak transponders (for example, 97) where 6 degrees off-centre is really not an option, without significant loss.

As well, 4 degrees between satellites on a mulitple LNB dish is a pain to get, as normal sized LNBs really don't want to get that close!

For you to get the satellites you want, as I said, it can be done with 3 satellite dishes. One dish for 125 (no way to combine it with any of the others). One dish for 72 and 83, and one dish for 87 and 97. However, the problem is than neither of those two dishes can have a centre LNB, all LNBs have to be off-centre, as the distances (degrees) would be too great otherwise. With 72 and 83, one LNB would be 6 degrees off centre (I'd put 72 there) and 83 would be 5 degrees off-centre. With 87 and 97, I'd put 97 as close to the centre of the dish as possible, 3 or 4 degrees off-centre, with 87 off by the remainder.

As far as placement on the dish chart you provided, facing the dish, the lower degree number satellite is always to the left of the higher degree number (example, 72 on the left, 83 on the right). If the satellite is lower in the sky than the other satellite, it is always higher on the dish than that other satellite (example, 72 is lower in the sky than 83, therefore it has to be higher than 83 on the dish, but not by a lot). In other words, everything seems backward!

[Classof83]

My suggestion is to get a motor. It's not like you constantly channel surf, and each satellite will have multiple channels on it, so you can arrange them by satellite and quickly scroll through those channels without having to wait for the motor to rotate. And it's not that big a wait for the motor to rotate either. Plus it's awesome seeing the dish rotate when it has to!

[Emerald_Boar]

@Keith Brannen
So the dish would look like this.

Dish aimed at 87 (PBS dvb-s2). So I shouldnot be able to pull in 72 or 97 if aimed at 87.

When you mention 6 degrees.
Do you mean satellite position 87W-83W = 4 or the compass angle 197.1 - 191.3?

@class Yes, Motor would be cool. Except for the winter.

@cyberham. Doesnt seem like the 22khz will anything for me. Since most of the stuff i have seem > 11700.

[cyberham]

Originally Posted by Emerald_Boar

@class Yes, Motor would be cool. Except for the winter.

I used my motor through this past winter. No problems at all. Only problem was snow buildup on the LNB but that will happen whether using a motor or not.

Originally Posted by Emerald_Boar

@cyberham. Doesn't seem like the 22khz will anything for me. Since most of the stuff i have seem > 11700.

The North American band is >11700. You can only find anything <11700 if you receive a signal from a satellite beaming outside of North America. And then it is unlikely you will be able to receive that signal anyway. Use a standard LNB in North America.

[Classof83]

I put a motor on my cover... a clear plastic cover that came with my golf bag! Since I don't golf in the winter, it works out perfectly! I'm not too far from London either. With a motor, you can catch all the satellites in the sky if you have a nice view of the southerly. I currently have 18 satellites scanned in!

[tdti1]

No problem with motors here, have had a 1.1m Patirot on motor and of course the bud with actuator for years.

[Keith Brannen]

Originally Posted by Emerald_Boar

Dish aimed at 87 (PBS dvb-s2). So I should not be able to pull in 72 or 97 if aimed at 87.

When you mention 6 degrees.
Do you mean satellite position 87W-83W = 4 or the compass angle 197.1 - 191.3?

Your diagram is fairly accurate as far as the positions and various heights, but the LNBs for 83 and 91 would be squashed against the 87 LNB!

Yes, I am talking about satellite position degrees.

With a dish aimed at 87, you MIGHT get the NBC mux on 72, as it is fairly strong, but you would miss all but the strongest feeds. I have a Star Choice 75e (ellipitcal dish) aimed at 87 as the centre LNB and do have an LNB aimed at 72 and do get it, but an elliptical dish is better at getting multiple satellites, and the LNB was only moved there when 74 went away. It is really just parked there as a spare (and was a test to see what I could get). I have another dish where I get 72 stronger.

As far as 97, again, you MIGHT get the strongest transponders, but definitely would loose probably most. Typically, it is the transponders you want the most, that you don't get!

Naturally, the best way to see is to experiment. Setup a dish on 87 and see what you can get, and whether it is acceptable. If not, try any of the various combinations I mentioned, or others that you can think of. Good luck!

[tdti1]

Try what Mike Kohl did
http://skyvision.com/fta/multifeed.html

[Emerald_Boar]

Thanks, Just trying how to exploit different equipment.

I was messing with my receiver settings. If i incorrectly map my LNB settings from 10600 to 10000. I can receive RTV at 11135 V. Would this be a way of getting 22khz to work effectively with NA satellites?

Read ya l8r,
Al

[cyberham]

What do you mean by "work effectively"? What do you think it is going to do? It's just a signal to turn something ON or OFF, such as the band range of a universal LNB, or so you can switch multiple dishes to a single receiver.

[Emerald_Boar]

using RTV as an example.

If the channel can be scanned in at 11135. Should not the switch be set one way. OFF
If the channel is scanned with the proper setting 11735. Would it not auto switch to the other side. ON
Therefore effectively using both sides of the 22kHz switch. <:

Scans > 11700 = ON. Scans < 11700 = OFF

Read ya l8r,
Al

PS. In theory it could work. Practice is another story. Like DTV with VHF rfs. In theory 5 kW DTV signal should be able to replace a 100kW analog signal. But in practice it doesnt.