C-band and Ku band - Techwatch: Satellite TV forums, FTA, Cable, Hardware, & Tech forums

madrat · 06-07-07, 01:32 AM

Whats the difference between KU and C band :?

Analoguesat · 06-07-07, 08:52 AM

About 7 GHz!

C-band is the band downlinking around 4 GHz , Ku band is downlinking off the satellite at about 11 GHz

madrat · 06-07-07, 03:30 PM

:? sorry perhaps you could explain it a bit more.

Analoguesat · 06-07-07, 03:49 PM

Ive split this off its original thread as its well off topic for the original thread!

The electromagnetic spectrum covers everything from miles long radio wavelengths (very low frequencies) to way up past the the ultra high frequency (very short wavelengths) stuff making up gamma rays. OK?

The frequencies usable by satellites stretch from about 1 GHz up to about 40 GHz.

(Ghz - 1 billion cycles per second)

This band is subdivided into 5 or 6 bands depending on the frequencies

L-band (390MHz-1.55GHz) GPS satellites, satellite phones, misc commsats, SETI outer space exploration
S-band (1.55-5.2GHz) weather satellites, XM/Sirius radio
C-band (3-7GHz) misc GEO commsats, cable TV distribution, satellite TV (large 7-10 ft. steerable dishes), first band for communications satellites
X-band (8-12GHz) misc commsats (often military)
Ku-band (11-15GHz) TV network satellite distribution, misc commsats, satellite TV (small 18" dishes)
Ka-band (18-40GHz) misc commsats, satellite phone backhaul, data transfer

BGonaSTICK · 06-07-07, 04:02 PM

Good post. Here is the even wider frequency range allocations for Europe.

madrat · 06-07-07, 05:34 PM

Thanks, bit clearer now, so their isn't relay any TV/radio as such on the C band? I'm better off sticking with KU

BGonaSTICK · 06-07-07, 06:07 PM

Sure, there's some weird and wonderful TV on C-band. The Americans use it a lot as do many other parts of the world, but Europe is almost exclusively Ku band so that answers your second bit too.

crossbones · 06-07-07, 07:50 PM

you will require a big dish to watch most of the C-band channels.

madrat · 07-07-07, 12:55 AM

I would love a big dish.

Told the wife I would like a 3m erection in the garden :roflmao:

I just got one of those looks.

BGonaSTICK · 07-07-07, 11:50 AM

:roflmao:

06-07-07, 01:32 AM	#1 (permalink)
madrat Senior Member Join Date: Mar 2007 Location: Leicestershire Posts: 1,705 Thanks: 4 Thanked 12 Times in 11 Posts	C-band and Ku band Whats the difference between KU and C band :? __________________ *I want it and I want it now*

06-07-07, 08:52 AM	#2 (permalink)
Analoguesat satellite expert Join Date: Jan 2006 Location: Scottish Borders Posts: 8,309 Thanks: 10 Thanked 270 Times in 242 Posts	C-band and Ku band About 7 GHz! C-band is the band downlinking around 4 GHz , Ku band is downlinking off the satellite at about 11 GHz __________________ To all the cable boys - do not post: keys of any sort firmware for receivers links to sites carrying files, keys or fixes Read the rules before you post - click here to read them

06-07-07, 03:30 PM	#3 (permalink)
madrat Senior Member Join Date: Mar 2007 Location: Leicestershire Posts: 1,705 Thanks: 4 Thanked 12 Times in 11 Posts	C-band and Ku band :? sorry perhaps you could explain it a bit more. __________________ *I want it and I want it now*

06-07-07, 03:49 PM	#4 (permalink)
Analoguesat satellite expert Join Date: Jan 2006 Location: Scottish Borders Posts: 8,309 Thanks: 10 Thanked 270 Times in 242 Posts	Re: C-band and Ku band Ive split this off its original thread as its well off topic for the original thread! The electromagnetic spectrum covers everything from miles long radio wavelengths (very low frequencies) to way up past the the ultra high frequency (very short wavelengths) stuff making up gamma rays. OK? The frequencies usable by satellites stretch from about 1 GHz up to about 40 GHz. (Ghz - 1 billion cycles per second) This band is subdivided into 5 or 6 bands depending on the frequencies L-band (390MHz-1.55GHz) GPS satellites, satellite phones, misc commsats, SETI outer space exploration S-band (1.55-5.2GHz) weather satellites, XM/Sirius radio C-band (3-7GHz) misc GEO commsats, cable TV distribution, satellite TV (large 7-10 ft. steerable dishes), first band for communications satellites X-band (8-12GHz) misc commsats (often military) Ku-band (11-15GHz) TV network satellite distribution, misc commsats, satellite TV (small 18" dishes) Ka-band (18-40GHz) misc commsats, satellite phone backhaul, data transfer __________________ To all the cable boys - do not post: keys of any sort firmware for receivers links to sites carrying files, keys or fixes Read the rules before you post - click here to read them

06-07-07, 04:02 PM	#5 (permalink)
BGonaSTICK Super Murderator Join Date: Nov 2005 Location: Brighton Posts: 10,633 Thanks: 3 Thanked 64 Times in 37 Posts	Re: C-band and Ku band Good post. Here is the even wider frequency range allocations for Europe. __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W


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06-07-07, 05:34 PM	#6 (permalink)
madrat Senior Member Join Date: Mar 2007 Location: Leicestershire Posts: 1,705 Thanks: 4 Thanked 12 Times in 11 Posts	Re: C-band and Ku band Thanks, bit clearer now, so their isn't relay any TV/radio as such on the C band? I'm better off sticking with KU __________________ *I want it and I want it now*

06-07-07, 06:07 PM	#7 (permalink)
BGonaSTICK Super Murderator Join Date: Nov 2005 Location: Brighton Posts: 10,633 Thanks: 3 Thanked 64 Times in 37 Posts	Re: C-band and Ku band Sure, there's some weird and wonderful TV on C-band. The Americans use it a lot as do many other parts of the world, but Europe is almost exclusively Ku band so that answers your second bit too. __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W

06-07-07, 07:50 PM	#8 (permalink)
crossbones Senior Member Join Date: Feb 2007 Location: S.Wales Posts: 877 Thanks: 62 Thanked 32 Times in 25 Posts	Re: C-band and Ku band you will require a big dish to watch most of the C-band channels. __________________ Gregorian 1.2m & 55cm dish`s,Gibertini 1.5m on a Jeagar 1224 H 2 H motor.Dreambox,7025 200GB HD. Vbox II.Skystar 2 PCI card, 42" Plasma tv.

07-07-07, 12:55 AM	#9 (permalink)
madrat Senior Member Join Date: Mar 2007 Location: Leicestershire Posts: 1,705 Thanks: 4 Thanked 12 Times in 11 Posts	Re: C-band and Ku band I would love a big dish. Told the wife I would like a 3m erection in the garden :roflmao: I just got one of those looks. __________________ *I want it and I want it now*

07-07-07, 11:50 AM	#10 (permalink)
BGonaSTICK Super Murderator Join Date: Nov 2005 Location: Brighton Posts: 10,633 Thanks: 3 Thanked 64 Times in 37 Posts	Re: C-band and Ku band :roflmao: __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W