What is L Band

[LoTech]

I've got a lead on a 1.8 m offset dish that was used by a school to pick up KET Star Channel. The info I've gotten on Star Channel is that it was broadcast on L Band.

Would I need to get a new LNB for this dish to pick up C Band?

Edit: Star Channel was broadcast on GE 1 (AMC 1) at a frequency of 1073.75 MHz.

 

[Smith P.]

AMC 1 at 103.0°W - LyngSat
[ame="http://en.wikipedia.org/wiki/L_band"]L band - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Atmosfaerisk_spredning.gif" class="image"><img alt="" src="http://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Atmosfaerisk_spredning.gif/220px-Atmosfaerisk_spredning.gif"@@AMEPARAM@@commons/thumb/6/6a/Atmosfaerisk_spredning.gif/220px-Atmosfaerisk_spredning.gif[/ame] - in the part:
The L Band refers to the frequency range of 950 MHz to 1450 MHz. It is the result of the downconversion of the received downlink satellite signals (C, Ku or Ka) by the LNBDC (Low-noise block converter).

 

[Lak7]

Take the LNBs LO Freq minus the TP freq gives the L Band freq

5150 minus 4000 = 1150 L Band

 

[Mr Tony]

and if you do KU band then you add the L-Band to your LNB LO frequency (10750 or 9750 etc)

 

[Mr Tony]

I wonder if the LNB is one polarity only? I've seen specialized LNB's like that where they are designed for one polarity only

 

[LoTech]

I don't know anything about it yet. It's still on top of the school, and I have to wait until maintenance takes it down before I can inspect it.