QAM transpoder frequencies?

[Hooked]

NOOB question here, I work for a PCO and we use Dish as our content provider. I am looking for a list of all transponders 1-32 and their coordinating frequencies, i.e. transponder 1 freq 974, trans 2 freq 2111. I have most of them but I need to fill inthe gaps.
thank you for your help!

 

[Awohar]

lyngsat.com

 

[BuddyBoy]

lyngsat.com

That's not what he wants. PCO is "Private Cable Operator". He wants the QAM frequencies on the cable, not through the air.

 

[garys]

Why is this being asked on a Dish Network discussion site?

 

[BuddyBoy]

Satellite Management Services - Programming - Dish Network PCO

 

[garys]

Thanks.

 

[Hooked]

Why is this being asked on a Dish Network discussion site?

Sorry if this is in the wrong area, I was not sure where to post this, if a mod wants to move this please do.

 

[Hooked]

Buddy you are exactly right and that is why I posted here. Does anyone know where I can find this information?

Thanks for you help!

 

[garys]

Sorry if this is in the wrong area, I was not sure where to post this, if a mod wants to move this please do.

I didn't know Dish had anything like this, according to BuddyBoy's link, it should be here.

 

[Smith P.]

Buddy you are exactly right and that is why I posted here. Does anyone know where I can find this information?

Thanks for you help!

Freq are same as for cable companies.

 

[Hooked]

Freq are same as for cable companies.

We can I find that information?

 

[BuddyBoy]

Freq are same as for cable companies.

Once again, that's not the question asked by the OP.

The Dish Network PCO equipment takes an entire transponder's worth of channels, and transmodulates it down to a single 6MHz channel on cable. He wants to know the mapping of transponders on a given satellite, to the cable channels.

Satellite Management Services - Equipment QAM Transcoders / HDTV, DirecTV, Digital Transport, C-Band

As you can see from the illustration. TV channels are uplinked to satellites that in turn send the signals back to the earth for reception by a small (1 meter) antenna. The QPSK satellite transponders are then "cherry picked" by the transcoder and sent out on a cable channel in a QAM format. These QAM channels may be combined with analog channels and/or High Speed Internet to complete the cable tv offering.

An example of a QPSK to QAM conversion could be:

Satellite 148, transponder 11 converted to CATV channel 82. This would put 12 digital channels in the 6MHZ channel bandwidth between 570mhz and 576mhz.

Not knowing anything about Dish PCO equipment, I would have guessed these mappings are different for every installation. But I have no knowledge of this product other than what is available at the above web site.

 

[Hooked]

Once again, that's not the question asked by the OP.

I am the OP.

The Dish Network PCO equipment takes an entire transponder's worth of channels, and transmodulates it down to a single 6MHz channel on cable. He wants to know the mapping of transponders on a given satellite, to the cable channels.

Satellite Management Services - Equipment QAM Transcoders / HDTV, DirecTV, Digital Transport, C-Band



Not knowing anything about Dish PCO equipment, I would have guessed these mappings are different for every installation. But I have no knowledge of this product other than what is available at the above web site.

Thank you for the example, I am trying to find out the input freq. of those transponders. In your example you show that sat 148 trans 11 goes onto ch. 82. This is correct, using your example I will explain my question. On my QAM equipment if I wanted to place trans 11 from sat 148 onto ch. 82 I would need an input freq to do so. For trans 11 I would use freq 1120. This is the same for all satellites (that I use from Dish) they all have 32 transponders and their coordinating input frequency. I have almost all of these /trans/freqs but I need to fill in my gaps. They are transponders 26, 28 and 32.

 

[goaliebob99]

The OP was right in posting here. I have seen also fiber to QAM switching that dish had on display at CES. It takes the satellite in and distributes to the head end via fiber and I believe the head end outputs to qam. As far as frequency from the Bird to qam. I dont know where to find that info. Maybe on the retailer sites. If you have access to dishretailer.com you can ask there and maybe a retailer would know.

 

[BuddyBoy]

Thank you for the example, I am trying to find out the input freq. of those transponders. In your example you show that sat 148 trans 11 goes onto ch. 82. This is correct, using your example I will explain my question. On my QAM equipment if I wanted to place trans 11 from sat 148 onto ch. 82 I would need an input freq to do so. For trans 11 I would use freq 1120. This is the same for all satellites (that I use from Dish) they all have 32 transponders and their coordinating input frequency. I have almost all of these /trans/freqs but I need to fill in my gaps. They are transponders 26, 28 and 32.

That's a different question than what I thought you were originally asking, not that it matters as I don't have an answer for this one either.

The frequency of the signal sent by Dish for TP11 is 12.370GHz with right-hand circular polarization. I have no idea how this maps to "1120", or even what that "1120" means (probably 1.12GHz, but who knows, could be something specific to the PCO equipment only).

Wait, I think I got it. Take the Dish transponder frequency from lyngsat.com, and subtract 11.250GHz. That's what a Dish LNB does - shifts all the frequencies down.

TP26 = 12588 - 11250 = 1338
TP28 = 12618 - 11250 = 1368
TP32 = 12676 - 11250 = 1426

That's got nothing to do with QAM, which is why your question was so confusing.

 

[Smith P.]

[ame="http://en.wikipedia.org/wiki/North_American_cable_television_frequencies"]North American cable television frequencies - Wikipedia, the free encyclopedia[/ame]

 

[BuddyBoy]

North American cable television frequencies - Wikipedia, the free encyclopedia

Did you even bother to read any of the posts in this thread? That is not what is being asked. Post #13 states the question and #15 answers it.

 

[Smith P.]

OK, I'd add to that - take freqs from EchoStar 1 at 148.0°W - LyngSat then subtract 11250.
That will be IF - that freq what coming to QPSK/8PSK sat-tuners, then A/V signals from each sat receiver should be routed to QAM modulators, output freqs [QAM] in that table at Wiki URL.
Shouldn't be too complicated task, especially if you know those IF (from LNBF/switch) signals doesn't have anything to do with QAM boxes; those devices accept normal analog video/audio signal like TV or VCR. Not that what OP asking.

 

[Awohar]

OK, I'd add to that - take freqs from EchoStar 1 at 148.0°W - LyngSat then subtract 11250.
That will be IF - that freq what coming to QPSK/8PSK sat-tuners, then A/V signals from each sat receiver should be routed to QAM modulators, output freqs [QAM] in that table at Wiki URL.
Shouldn't be too complicated task, especially if you know those IF (from LNBF/switch) signals doesn't have anything to do with QAM boxes; those devices accept normal analog video/audio signal like TV or VCR. Not that what OP asking.

qpsk to qam transmodulator directly changes from satelite IF to qam channels without using sat receivers and modlaters,

 

[Smith P.]

Oh, that's good one, but it wouldn't just simple box - where I can read about it ? Can you provide maker/model info ?