canofan
Regular Member
- Joined
- Jun 30, 2007
- Messages
- 258
- Reaction score
- 0
- Points
- 16
- Age
- 84
- My Satellite Setup
- Amiko Alien2 Dual Tuner; CM120w/Inverto quattro on7°W; Triax 2X110, LNBFs:3BEST 1 quattro 13E 1 quattro 19.2E 1 single 28.2E multiswitches for the quattros and a satrix disecq 1.0.
- My Location
- Brussels Belgium
There are LNB's, on the american market, specialised in the linear single band 11700 to 12200 mHz. Doing something special in this band is an american particularity as they use this band for fss.
Invacom is putting on the american market a special LNB to serve this application but at the same time serve the circular band from 12200 to 12750 mHz. Invacom's QPF-31 is a quad LNB having two high band linear and two high band circular outputs. The linears are volt switching V/H and the circulars are volt switching left/right.
In its specification, there are two linear polarisation input frequency bands in the FSS band: 11.7 to 12.2 gHz and 12.2 to 12.7 gHz; and one circular input frequency band 12.2 to 12.7 gHz.
The linears are available on ports 1 and 3 while the circulars on 2 and 4.
It is not clear to me, how to appreciate the peaking effect, which will enhance the gain. And how the appropriate linear band is selected from the receiver's end.
Invacom is putting on the american market a special LNB to serve this application but at the same time serve the circular band from 12200 to 12750 mHz. Invacom's QPF-31 is a quad LNB having two high band linear and two high band circular outputs. The linears are volt switching V/H and the circulars are volt switching left/right.
In its specification, there are two linear polarisation input frequency bands in the FSS band: 11.7 to 12.2 gHz and 12.2 to 12.7 gHz; and one circular input frequency band 12.2 to 12.7 gHz.
The linears are available on ports 1 and 3 while the circulars on 2 and 4.
It is not clear to me, how to appreciate the peaking effect, which will enhance the gain. And how the appropriate linear band is selected from the receiver's end.