Found a way to use 2 22k switches in series

[Mr Tony]

I think I found one of maybe the 2 ways to use 2 22k switches

I put my SC dish up for G10 and put a DBS LNB for 119. So I had to peak on the LNB that has the 22k off. So I wondered can I run 2 lines from the quad LNB and the 2 lines from the 119 LNB to a 4x4 multiswitch?

well, the answer is yes (sort of). The SC LNB has a 22k switch built in to select between 107.3 & 111.1 in a SC world. So in my setup, G10 is the 0k side and Horizons 1 (127W) is the 22k side. Hooked up the 0k side of the multiswitch to the SC LNB and the 22k side to the DBS LNB

and it works...because the receiver is not sending the 22k "burst" so it goes through the 0k side of the switch up tot he LNB and using the 0k side of the LNB. I tried to hook the 22k side to the SC dish thinking that the 22k would send a signal and go to the LNB but that didn't work

so in this case I am able ot use 2 22k switches in a row The only other way I'm thinking that this will work is if someone has a Universal LNB offset on a motorized (the mian LNB would be a standard) and they put the 22k side of the switch to the standard LNB. So whent he 22k iss ent, you'd get the standard LNB and when the 22k is off, you would get the low band of the Universal (which is what PAS9 pretty much has)

so the setup is pretty sweet

receiver-----------22k-----------0k side of SC LNB
------------------------------------22k side of SC LNB (this LNB is dead)
------------------------------------22k--------------DBS LNB

 

[Anole]

you stuck that 22khz where ?

You're connecting the StarChoice LNB (with its built-in 22khz switch), to an external 22khz switch.
And you're saying the external 22khz switch passes tone to the LNB it selects on the tone-on side?
...and obviously not to the tone-off input side...

So, if I understand you correctly, you use the external 22khz switch to select between the G10@123 of the StarChoice LNB (through the tone-off side), -or- the DBS 119 LNB hooked to the tone-on side of the external switch?

That still only gives you a choice of two sources. With the tone...
off = the SC tone-off or 123
on = the external DBS LNB
There is no way to select the other side of the StarChoice LNB (@127)

What am I missing, other than getting to reuse an otherwise useless StarChoice LNB?
This -is- somewhat like finding a creative way to use the Phase III dish with integrated switch, I suppose.

... The only other way I'm thinking that this will work is if someone has a Universal LNB offset on a motorized (the mian LNB would be a standard) and they put the 22k side of the switch to the standard LNB. So when the 22k is ent, you'd get the standard LNB and when the 22k is off, you would get the low band of the Universal (which is what PAS9 pretty much has)

That idea makes my brain itch almost as much as the first example.
Sounds like it should work fine.
Though, I have my doubts why anyone would want such a configuration.
Maybe because those are the LNBs and switches they had left over...?
(why wouldn't you just put the universal as the main LNB and be done with it?)

And this should open up a lot of other creative ways to use 22khz switching.
I know I'll be thinking about it more in the future.
Thanks.

 

[Mr Tony]

You're connecting the StarChoice LNB (with its built-in 22khz switch), to an external 22khz switch.
And you're saying the external 22khz switch passes tone to the LNB it selects on the tone-on side?
...and obviously not to the tone-off input side...

So, if I understand you correctly, you use the external 22khz switch to select between the G10@123 of the StarChoice LNB (through the tone-off side), -or- the DBS 119 LNB hooked to the tone-on side of the external switch?

correct. I would set up G10 as normal (22k off) and the DBS would be set to 22k on. I'll be using a 4x4 multiswitch instead of a simple 22k switch but the principle is the same.

That still only gives you a choice of two sources. With the tone...
off = the SC tone-off or 123
on = the external DBS LNB
There is no way to select the other side of the StarChoice LNB (@127)

no. The 22k built into the StarChoice LNB is pretty much useless

What am I missing, other than getting to reuse an otherwise useless StarChoice LNB?

you're not missing anything. I guess the main reason I tried it was so I didnt have to try and fabricate a LNB holder to put on it.

Sounds like it should work fine.
Though, I have my doubts why anyone would want such a configuration.
Maybe because those are the LNBs and switches they had left over...?
(why wouldn't you just put the universal as the main LNB and be done with it?)

Someone wants Cubavision but can't see Hispasat so they have to use it on PAS9. I know what your saying but......if someone wants to slave an analog box to their setup. A Universal LNB screws up the analog box by having everything off by 150mhz (and they wont see channels 18-24 on the analog).....then I would almost say "use a diseqc"
(but I had to mention this otherwise someone would have said "no there's another way to use 2 22k switches in series"

 

[Anole]

when the sun came up...

I just woke up and it dawned on me.
The #1 reason this is all so useful is...

...it gives you both polarities, for installations where you need to supply multiple receivers
diseqc switches probably couldn't be configured to do this.

And, the fact that the 22's are a little more robust and reliable (as with Twinhan cards) are just extra benefits.


The subtlety with the analog receiver had eluded me.
Good call.

It's a pleasure to hang out where people are thinking so seriously about such things.

 

[Mr Tony]

I just woke up and it dawned on me.
The #1 reason this is all so useful is...

...it gives you both polarities, for installations where you need to supply multiple receivers
diseqc switches probably couldn't be configured to do this.

in my case, running 2 lines from the SC dish and 2 lines from the 119 LNB to a 4x4 multiswitch out to multiple receivers is the reason
Instead of using a 3x4 multiswitch to split the DBS feed to 4 and to tie each one with a diseqc, this makes it much easier. Yes I wont have access to the 127 LNB but there is nothing free on there

And, the fact that the 22's are a little more robust and reliable (as with Twinhan cards) are just extra benefits.

that too

It's a pleasure to hang out where people are thinking so seriously about such things.

FTA is such a fun hobby. It allows us to test the limits and try weird things.
If it works thats something else to post that was tried. If it doesn't, oh well chalk it up to experience