Birddoggy, Randall A, Smity Whity and especially Claude Greiner you are all hung up on 18 Volts. As I posted earlier the Legacy switches polarity by voltage switching. Legacy uses both 12 and 18 volts so the voltage has nothing to do with a DPP working with Legacy receivers. DP does band stacking so only 18+ volts is used Legacy switches voltage instead of band stacking so a DPP Twin will work with only 12 volts getting to the amplifier.
Now, now, now, I didn't say you were wrong and that it wouldn't work; but more important, I am not hung up on 18 volts.
But while we are on voltage....
Legacy is 13v (odd) and 18v (even), not 12v and 18v as you said twice. So that's probably not a typo.
To switch to the even transponders, the Legacy LNBF must receive at least 15v.
But I'm sure there's a +/- here.
DishPro uses DiSEqC 2.0 commands carried on a 22KHz tone.
The DishPro receiver supplies 19v, but the voltage can drop to 10.5v before the DishPro equipment (DP LNBF, DP34 switch) loses power and doesn't function (properly).
Legacy receivers can not (directly) switch a DishPro LNBF using 13v and 18v commands.
- But with a DP Adaptor between the Legacy receiver and the DP34 switch, it can switch between polarities and orbital locations.
Exception: A Legacy receiver can connect directly to a DP Dual to download software upgrades.
DishPro Plus also uses DiSEqC commands carried on a 22KHz tone.
The DishPro/DishPro Plus receiver supplies 19v, but the voltage can drop to 10.5v before the DishPro and/or DishPro Plus equipment (DP LNBF, DPP Twin, etc) loses power and doesn't function (properly).
Legacy receivers can directly connect to a DishPro Plus LNBF or DishPro Plus Twin LNBF using 13v and 18v.
- However, the length is limited,
probably because of a power issue, not just a voltage issue.
My previous post listed two Dish documents, one says you can with restrictions, and one says you can't.
Again, I suspect there is an issue with POWER REQUIREMENTS, and NOT A VOLTAGE ISSUE.
Even one of Dish's documents say you may need to add a POWER SUPPLY to a DP34 SWITCH to get enough power to a DPP Twin.
People say you can run the DPP44 without the power inverter. Others say you can't. I believe it also has to do with power requirements and not just the voltage range.
The OP got it to work which is good. Will it always work - I hope so, and it probably will.
If it doesn't, he can buy a 311 for under a $100, especially a remanufactored one.
If I had the equipment, I would not had hesitated to try it either.
It's been said that DiSEqC switches don't work. Well, I replaced a DPP44 with 2 DiSEqC 4x1's, and 4 splitters and my 622 worked.
