My dish has a wideband LNB (not universal one), based on voltage band switching (13 or 18 volt to change band, not 22 KHz). Is it supported in Duo2? Not in normal menu configuration, where I find only Universal LNB, single 13 volt, single 18 volt. Is there a way to control this LNB with Duo2? Thank you.
LNB config in Duo2
- Thread starter Gigantone
- Start date
angelofsky1980
BlackHole Driver Specialist
I think you must configure your tuner in Advanced mode and select User Defined LNB and put the specs of your hardware
el bandido
Vu+ User
Can you tell us the make or name of your lnb and its model number? You may also include any other information you have on the lnb such as l.o. frequency.
My LNB is manufactured by Swedish Microwave. I don't remember model, but it's a PLL LNB with 2 OL: 9750 MHz for low band, 10600 MHz for high band. No polarity control because WR75 waveguide is present (but no problem for this, I use a specific polarotor). The problem with Duo2 seems band switching: this LNB requires 13 volt for low band and 18 volt for high band, no 22 KHz tone needed. Any idea how to configure Duo2? Thanks.
el bandido
Vu+ User
OK.
The only ways I see to use that lnb system would be:
(1) With two tuners, By assigning each tuner to a different voltage.
(2) By changing the satellite file and have two entries for each orbit location. Assign each satellite entry to a different voltage. (IMO, this would be messy if you had more than a couple of satellites that you are targeting.)
(3) Install a Multi-Switch that is voltage dependent on switching. I have had good luck using a Zinwell MS3X4WB-Z to combine two lnbs with high and low voltages. This type of switch has an input for 13 Volts, and an input for 18 Volts. It can support up to 4 receivers.
There may be other ways to make this work, but these are the only three I can think of right now. I am using a 13/18 Volt lnb for c band. I feed this lnb with the Zinwell 3X4 switch and it works very well on my Duo2. EB
The only ways I see to use that lnb system would be:
(1) With two tuners, By assigning each tuner to a different voltage.
(2) By changing the satellite file and have two entries for each orbit location. Assign each satellite entry to a different voltage. (IMO, this would be messy if you had more than a couple of satellites that you are targeting.)
(3) Install a Multi-Switch that is voltage dependent on switching. I have had good luck using a Zinwell MS3X4WB-Z to combine two lnbs with high and low voltages. This type of switch has an input for 13 Volts, and an input for 18 Volts. It can support up to 4 receivers.
There may be other ways to make this work, but these are the only three I can think of right now. I am using a 13/18 Volt lnb for c band. I feed this lnb with the Zinwell 3X4 switch and it works very well on my Duo2. EB
Thank you so much for your very interesting reply. I believe the third solution would be the best, but I suspect that your multiswitch does not solve my problem. If I understand specs, this switch needs 2 input cables, one feeding 13 volt and the other feeding 18 volt. I have just 1 cable and the LNB needs 13 volt for low band and 18 volt for high band. Probably the best solution would be a switch that sends through the cable 13 or 18 volt depending from 22 KHz. So, when 22 KHz is ON from Duo2 the switch would send 18 volt (high band), when 22 KHz is OFF the switch would send 13 volt (low band). Do you think a similar switch would be available from some manufacturer? Thank you again.
el bandido
Vu+ User
You are correct about the switch. Since your lnb has only one cable, this switch will not work. I do not know of any switch that changes voltages such as: 0Khz=13V & 22Khz=18V. A switch designed like that is what you need.
I also question whether 2 tuners would help you any because your lnb only has one cable?
The only solution I see is to modify the satellite file and have two identical entries per orbit location.
None of the fta receivers that I own have a lnb setting in the antenna menu that would work with your lnb. Changing the lnb to something that most fta receivers can handle would probably be your best option, but I am sure the lnb you have does an excellent job. EB
I also question whether 2 tuners would help you any because your lnb only has one cable?
The only solution I see is to modify the satellite file and have two identical entries per orbit location.
None of the fta receivers that I own have a lnb setting in the antenna menu that would work with your lnb. Changing the lnb to something that most fta receivers can handle would probably be your best option, but I am sure the lnb you have does an excellent job. EB