Social Feed
Introduction:
Lots of basic switch questions come up every month.
I'm no expert on the subject, but I've been paying close attention to the people who've been putting them to work.
Some have come up with very complicated switching matrices from the simple building blocks.
So, for a while, I've thought we should roll the basics into one document which might answer many of the more common questions.
This weekend, I ran the idea past Iceberg for his input.
We'll try to keep to 22khz (two kinds), diseqc (two kinds), and multiswitches (two kinds, again).
He suggested we don't get into use of bandstacked LNBs, but they could be the basis of another thread, if needed.
Ku band LNBs:
Before talking about switches, it's necessary to understand the more common kinds of LNBs.
Why? Because some have built in switching, and that interacts with our external switches.
Standard FTA LNBs deal with one band of satellite frequencies, and have one Local Oscillator frequency (LO).
So, no additional switching is built into the LNB.
These regular FSS, or linear, or FTA LNBs have an LO of 10750mhz.
The DBS (direct broadcast satellite) LNBs for pay TV, have an LO of 11250mhz, and work similarly.
However, the term Standard, is used only for the FTA or FSS band, not pay TV.
So, while for most of the following switch ideas, these LNBs can be interchanged, you have to use the right LNB for the job.
Universal FTA LNBs deal with two bands of satellite frequencies, and have two Local Oscillator frequencies (LO).
To select the higher band (the one we use in North America), you must supply a 22khz tone to the LNB. LO=10600
If you don't, the LNB reverts to the lower of the two LO frequencies and low band (which is useful for Europe and Eastern satellites). LO=9750
As we shall see later, the internal 22khz switch of the Universal LNBs sometimes limit their use.
Singles and Duals
LNBs are further divided into single output and dual output models.
The Singles have one connector, and give the receiver Vertical transponders when fed 12 volts, and Horizontal transponders when fed 18 volts.
The Dual LNBs have two connections which operate as above.
For more complicated switching, you can put one output to 12 volts for Vertical and 18 volts for Horizontal, and get both polarities at the same time.
That feature will be exploited in some of the following designs.
See other documents (or our FAQ) if the above is not sufficient, or is confusing.
Lots of basic switch questions come up every month.
I'm no expert on the subject, but I've been paying close attention to the people who've been putting them to work.
Some have come up with very complicated switching matrices from the simple building blocks.
So, for a while, I've thought we should roll the basics into one document which might answer many of the more common questions.
This weekend, I ran the idea past Iceberg for his input.
We'll try to keep to 22khz (two kinds), diseqc (two kinds), and multiswitches (two kinds, again).
He suggested we don't get into use of bandstacked LNBs, but they could be the basis of another thread, if needed.
Ku band LNBs:
Before talking about switches, it's necessary to understand the more common kinds of LNBs.
Why? Because some have built in switching, and that interacts with our external switches.
Standard FTA LNBs deal with one band of satellite frequencies, and have one Local Oscillator frequency (LO).
So, no additional switching is built into the LNB.
These regular FSS, or linear, or FTA LNBs have an LO of 10750mhz.
The DBS (direct broadcast satellite) LNBs for pay TV, have an LO of 11250mhz, and work similarly.
However, the term Standard, is used only for the FTA or FSS band, not pay TV.
So, while for most of the following switch ideas, these LNBs can be interchanged, you have to use the right LNB for the job.
Universal FTA LNBs deal with two bands of satellite frequencies, and have two Local Oscillator frequencies (LO).
To select the higher band (the one we use in North America), you must supply a 22khz tone to the LNB. LO=10600
If you don't, the LNB reverts to the lower of the two LO frequencies and low band (which is useful for Europe and Eastern satellites). LO=9750
As we shall see later, the internal 22khz switch of the Universal LNBs sometimes limit their use.
Singles and Duals
LNBs are further divided into single output and dual output models.
The Singles have one connector, and give the receiver Vertical transponders when fed 12 volts, and Horizontal transponders when fed 18 volts.
The Dual LNBs have two connections which operate as above.
For more complicated switching, you can put one output to 12 volts for Vertical and 18 volts for Horizontal, and get both polarities at the same time.
That feature will be exploited in some of the following designs.
See other documents (or our FAQ) if the above is not sufficient, or is confusing.
11 Replies
·
42652 views
Multiswitch Example: simple
Real-World Multiswitch Example - 3 LNBs, 3 Receivers
Here is a design that was requested by a user who had specific requirements.
It may or may not suit your needs, but it's a good example of what we learned above.
Three receivers needed to be supported, and fed by any of three dishes.
The dishes had -
- a Universal LNB
- a DBS LNB for NASA/AngleOne
- C-band, and we used an uncommon dual-output LNBf with voltage control
Or maybe all the LNBs were on the man's C-band dish, just with various offsets.
Perhaps he moved it with his analog receiver.
It really doesn't matter for the switch discussion.
The 4x4 switch on the left uses 22khz tone to pick the C-band or DBS LNB.
It has four outputs to be routed to receivers or additional switches.
The 2x4 switch at the right feeds the Universal LNB to four outputs, and passes the 22khz tone to the LNB to let it select high band or low band.
The 2-input diseqc switches at the bottom let the receiver choose which multiswitch to listen to.
Obviously, you could have four receivers by adding one more diseqc and the 4th FTA box.
To expand this idea to support up to eight receivers, the multiswitches would need to be 4x8 and 2x8, respectively.
Likewise, you could add more LNBs and multiswitches if you had diseqc switches with four inputs (pretty common ones).
dwg 6: three LNBs, and three receivers
Switch Information:
Up tomorrow? 8 lnb & 4 rcvr. Switch table & dwg are done. Busy day, so probably in the evening.
Real-World Multiswitch Example - 3 LNBs, 3 Receivers
Here is a design that was requested by a user who had specific requirements.
It may or may not suit your needs, but it's a good example of what we learned above.
Three receivers needed to be supported, and fed by any of three dishes.
The dishes had -
- a Universal LNB
- a DBS LNB for NASA/AngleOne
- C-band, and we used an uncommon dual-output LNBf with voltage control
Or maybe all the LNBs were on the man's C-band dish, just with various offsets.
Perhaps he moved it with his analog receiver.
It really doesn't matter for the switch discussion.
The 4x4 switch on the left uses 22khz tone to pick the C-band or DBS LNB.
It has four outputs to be routed to receivers or additional switches.
The 2x4 switch at the right feeds the Universal LNB to four outputs, and passes the 22khz tone to the LNB to let it select high band or low band.
The 2-input diseqc switches at the bottom let the receiver choose which multiswitch to listen to.
Obviously, you could have four receivers by adding one more diseqc and the 4th FTA box.
To expand this idea to support up to eight receivers, the multiswitches would need to be 4x8 and 2x8, respectively.
Likewise, you could add more LNBs and multiswitches if you had diseqc switches with four inputs (pretty common ones).
dwg 6: three LNBs, and three receivers
Switch Information:
Code:
[FONT=Fixedsys]..
C-band : diseqc 1, 22khz off, 12v=Vertical 18v=Horizontal
- DBS - : diseqc 1, 22khz on , 12v=Vertical 18v=Horizontal
Universal: diseqc 2, high band, 22khz on , 12v=Vertical 18v=Horizontal
Universal: diseqc 2, low band , 22khz off, 12v=Vertical 18v=Horizontal
[/FONT]
simple stuff is done
Okay this thread was about simplifying the basic switches.
I hope we've covered all the basics, so the reader can come up with his own designs.
That means the job is done. -
Getting Complicated
Going beyond eight LNBs or four receives, is getting into the more complicated realm.
I know some users would like to support twelve, sixteen, twenty, or maybe thirty-two LNBs , perhaps for their T-90 dishes.
Ya just can't get there with only the basic building blocks shown above.
There are DISEqC switches with eight inputs and one output.
They operate in diseqc 1.1 mode and that's not supported by all receivers.
Unfortunately, there is not enough info published by users here, for me to fully explain their operation.
A couple of members have posted reviews and usage descriptions of these 8x1 switches.
If anyone wants to take over and make a description of the full capability of any of these switches, I'll supply the wiring picture.
And I'm not sure the two 8x1's I've heard about, are equally interchangeable.
Need a list of capable and incapable receivers to go with any such further discussion, too.
As a hint of possible things to come, here are some 1-receiver ideas:
- FTA --- eCoda --- 2 each 8x1 diseqc = 16 LNBs (some restrictions on Universals)
- FTA --- 8x1 diseqc --- 4 each 4x1 diseqc = 20 LNBs (no restrictions on Universals)
- FTA --- 8x1 diseqc --- 8 each 4x1 diseqc = 32 LNBs (no restrictions on Universals)
Multi-receiver ideas I could envision right off the top, include:
- 8 each FTA receivers - 8 each 8x1 diseqc --- 8 each 4x8 multiswitch = 16 LNBs (Standard LNBs only)
But, since I don't know enough about the 8x1's, and don't have any to play with, the above ideas are just speculation.
Are we there, yet? -
Okay this thread was about simplifying the basic switches.
I hope we've covered all the basics, so the reader can come up with his own designs.
That means the job is done. -
Getting Complicated
Going beyond eight LNBs or four receives, is getting into the more complicated realm.
I know some users would like to support twelve, sixteen, twenty, or maybe thirty-two LNBs , perhaps for their T-90 dishes.
Ya just can't get there with only the basic building blocks shown above.
There are DISEqC switches with eight inputs and one output.
They operate in diseqc 1.1 mode and that's not supported by all receivers.
Unfortunately, there is not enough info published by users here, for me to fully explain their operation.
A couple of members have posted reviews and usage descriptions of these 8x1 switches.
If anyone wants to take over and make a description of the full capability of any of these switches, I'll supply the wiring picture.
And I'm not sure the two 8x1's I've heard about, are equally interchangeable.
Need a list of capable and incapable receivers to go with any such further discussion, too.
As a hint of possible things to come, here are some 1-receiver ideas:
- FTA --- eCoda --- 2 each 8x1 diseqc = 16 LNBs (some restrictions on Universals)
- FTA --- 8x1 diseqc --- 4 each 4x1 diseqc = 20 LNBs (no restrictions on Universals)
- FTA --- 8x1 diseqc --- 8 each 4x1 diseqc = 32 LNBs (no restrictions on Universals)
Multi-receiver ideas I could envision right off the top, include:
- 8 each FTA receivers - 8 each 8x1 diseqc --- 8 each 4x8 multiswitch = 16 LNBs (Standard LNBs only)
But, since I don't know enough about the 8x1's, and don't have any to play with, the above ideas are just speculation.
Are we there, yet? -
M
Here is one that I painted up (very poorly) but anole will update it to look spiffy 
16 LNB's to 4 receivers using 8 4x4 multiswitches and 4 8x1 diseqc switches
16 LNB's to 4 receivers using 8 4x4 multiswitches and 4 8x1 diseqc switches
M
If your receiver supports Diseqc 1.1 you have the ability to add 4x1 diseqc switches to the inputs of the 8x1 for easy 3 LNB additions (I say 3 as if you go from 8 to the next step up yoiu would unhook the LNB in a port and hook it to the 4x1 so you'd go from 8 to 7 (unhooking the cable to hook up a 4x1) to 11
You feasibly could get 32 LNB's on this setup (or 64 if you added a bunch of 22k switches)
You feasibly could get 32 LNB's on this setup (or 64 if you added a bunch of 22k switches)
Lifetime Supporter
Schedule drops tomorrow. Mandatory mini camps in June. Hall of Fame game August 6th.
108 Replies
·
1551 views
Y
Browns lose a close one with... The Jets. That is a classic Browns loss (granted, any loss is a classic one it seems). 49'ers, Vikings, and Chiefs remain undefeated. The AFC north have a three way tie at 3-2 for second place.
A big win for the Patriots, and they are now 3-2.
Browns lose a close one with... The Jets. That is a classic Browns loss (granted, any loss is a classic one it seems). 49'ers, Vikings, and Chiefs remain undefeated. The AFC north have a three way tie at 3-2 for second place.
Troy Aikman seems to confirm he'll be leaving ESPN
Aikman says he looks forward to "where my next landing spot will be."
www.nbcsports.com
M
Hopefully nowhere near a microphone.Troy Aikman seems to confirm he'll be leaving ESPN
Aikman says he looks forward to "where my next landing spot will be."
Supporting Founder
Really excited for this season with Kentucky having a new coach and some really exciting recruits. Probably won't last long, but here's hoping this season is great.
134 Replies
·
1287 views
I thought I posted it as I usually have nothing to do but sit at my desk in the morning scrolling the interwebs , but my mom passed away the day before so my mind was mush.I noticed you missed last week's… Much like the SEC Shorts!
College Football Playoff nears agreement on 24-team expansion that could end title games
The College Football Playoff field is about to get much more crowded as the conferences near a deal to double the size of the field to 24 teams starting next year
www.cbssports.com
Pub Member / Supporter
Lifetime Supporter
Can't help but wonder if a worker overlooked checking the harness. I rarely ride a roller coaster anymore but when I do I check the harness myself pretty aggressively.
Can't imagine what the son is going through.
www.dailymail.com
Can't imagine what the son is going through.
Dad levitated and bled then fell to his death from coaster
Eyewitnesses have shared fresh details of the horrific accident that happened at Six Flags Over Georgia on Monday afternoon.
23 Replies
·
186 views
Could B&M’s Patent on the “Clamshell” Ride Restraint Design Offer Clues as to What Happened on Goliath at Six Flags Over Georgia?
Incredibly sad news out of Six Flags Over Georgia as it’s being reported one man was killed after being ejected from Goliath, the B&M hyper coaster. Many news outlets have posted pictures of pe…
bgtsafari.com
Had no idea there were that many redundancies built into those restraints.Could B&M’s Patent on the “Clamshell” Ride Restraint Design Offer Clues as to What Happened on Goliath at Six Flags Over Georgia?
Incredibly sad news out of Six Flags Over Georgia as it’s being reported one man was killed after being ejected from Goliath, the B&M hyper coaster. Many news outlets have posted pictures of pe…
It makes sense, however, I would want more types of restraints, so if one doesn't work, the other does ... the restraints coming over the shoulder I would have expected ... with a Seat belt as last resort.
Fwiw, I inquired with what they use on Coasters at Cedar Point, various Coasters, different restraints according to what the car and track requires ...
NONE of the Coasters at CP use THAT particular system
I'm glad to see ...
Pub Member / Supporter
Lifetime Supporter
Wasn't exactly sure where to post this. Just had a customer come in inquiring about internet. He has HughesNet and had heard good things about mine. He asked if we provided email addresses and it kinda caught me off guard. I said he should be able to keep whatever email he had been using....my sister in law is still using a BellSouth email addy and they haven't been around here for many years. He said he had gotten a letter from HughesNet stating that they had until Nov 16th to save, move, forward, whatever, their Hughesnet emails because they would lose them after that date.
I have never heard of a company simply mass-deleting email accounts (the customer still has his HughesNet service). From what I understand, in the past, the company who was ditching their email service simply sold the customer base to a company like Google.
Anyone else getting this letter. He said he would show it to me tomorrow when I go out there and set up his internet.
I have never heard of a company simply mass-deleting email accounts (the customer still has his HughesNet service). From what I understand, in the past, the company who was ditching their email service simply sold the customer base to a company like Google.
Anyone else getting this letter. He said he would show it to me tomorrow when I go out there and set up his internet.
6 Replies
·
88 views
Still the same number of years, just more Sunsets…Wouldn't we then die of old age sooner?
Staff member
HERE TO HELP YOU!
Hard getting used to the new younger Gibbs, Mark Harmons son had the right look but I understand he didn't want the role.
Still I'm enjoying, pretty good job with Franks.
Still I'm enjoying, pretty good job with Franks.
62 Replies
·
4173 views
Mark Harmon is coming back as Gibbs in Origins, for the full season. Just saw, Dinozzo too, on NCIS . That will be an interesting writing project.
deadline.com
Mark Harmon Returning To 'NCIS: Origins' As Gibbs For Season 3
Mark Harmon is returning to NCIS: Origins for a season-long arc.
deadline.com
Staff member
HERE TO HELP YOU!
Cutting Edge
Sometimes a thread gets so many posts in it that is can cause issues for the server so that why today we introduce The Song Name Game Part 3!
So let the game continue!
The last song was added by Bobby who posted...
One Meat Ball - Andrews Sisters
CONTINUE ON AND HAVE FUN! WELCOME HOME TO SATELLITEGUYS.US!
Here are the original rules for the game as posted by WebbyDude back in 2006. http://www.satelliteguys.us/threads/68645-Song-Name-Game
Just name a song title and the band who performed it. The next person does the same thing, but needs to list a song title or band name which includes a word from the previous entry. Pick songs from any genre.
Example:
Long Live Rock and Roll -- Rainbow
Rainbow in the Dark -- Dio
Another example:
Ride the Lightning -- Metallica
Lightning Strikes -- Ozzy Osbourne
Get it?
An additional note: we all know that song titles, sometimes, use profane words. Because this is a family friendly website it is advised that you clean up that title up a bit. This is accomplished by using something like sh!t instead of the real word. Thanks....
So let the game continue!
The last song was added by Bobby who posted...
One Meat Ball - Andrews Sisters
CONTINUE ON AND HAVE FUN! WELCOME HOME TO SATELLITEGUYS.US!
Here are the original rules for the game as posted by WebbyDude back in 2006. http://www.satelliteguys.us/threads/68645-Song-Name-Game
Just name a song title and the band who performed it. The next person does the same thing, but needs to list a song title or band name which includes a word from the previous entry. Pick songs from any genre.
Example:
Long Live Rock and Roll -- Rainbow
Rainbow in the Dark -- Dio
Another example:
Ride the Lightning -- Metallica
Lightning Strikes -- Ozzy Osbourne
Get it?
An additional note: we all know that song titles, sometimes, use profane words. Because this is a family friendly website it is advised that you clean up that title up a bit. This is accomplished by using something like sh!t instead of the real word. Thanks....
68491 Replies
·
2670125 views
Anyone else watch this show? Any guesses as to what was in the box Gibbs gave to Abby that was on her desk? It look liked it was glowing.
I also heard that someone was leaving the show at the end of this season. Any guesses as to who thats going to be?
I also heard that someone was leaving the show at the end of this season. Any guesses as to who thats going to be?
2130 Replies
·
214632 views
Tony as the director.
Would you rather have LaRoche ???Tony as the director.
OTHER Mini Multiswitch
I just received 6 receiver 2 port mini Multiswitch and it work great, no external power need it, and you can connect 6 receiver instead of 4 on most Mini Multiswitches... If anyone is interested in where they can get one PM me....
3 Replies
·
54 views
Supporting Founder
Lifetime Supporter
This is a thread that will keep you apprised of 4K events that will be showing on Dish channel 540. Keep looking here for information.
As of today, 9-27-17, there are no scheduled events posted for the next 2 weeks. That is subject to change on a daily basis.
As of today, 9-27-17, there are no scheduled events posted for the next 2 weeks. That is subject to change on a daily basis.
761 Replies
·
166965 views
For some reason, the satelliteguys.us site is loading a lot slower than usual on both Chrome on my Asus laptop and Safari on my iPhone.
I'm also seeing longer appearances of the blue bar at the top and the "3 blue bars" loading symbol.
Is anyone else also having the same problem? Thanks in advance.
I'm also seeing longer appearances of the blue bar at the top and the "3 blue bars" loading symbol.
Is anyone else also having the same problem? Thanks in advance.
524 Replies
·
17850 views
I have been optimizing the site the past few days... and got us here now. We are rocking now!
We are rocking now!
Remember folks... just like DNS... its always Foxbat.
WTF… …What the Foxbat!Remember folks... just like DNS... its always Foxbat.