BSC621-2 for L/R and H/V
- Thread starter kelleyga
- Start date
- Latest activity Latest activity:
- Replies 5
- Views 2K
- Status
polarizations?
No, not at one time.
The dielectric plate is inserted for reception of circular signals.
And I think it only applies to C-band.
(I'm sure someone will correct me if that's wrong)
Ku is linear-only.
No, not at one time.
The dielectric plate is inserted for reception of circular signals.
And I think it only applies to C-band.
(I'm sure someone will correct me if that's wrong)
Ku is linear-only.
correct
The plate is used for C-Band only (satellites over the atlantic)....the KU is linear only
The plate is used for C-Band only (satellites over the atlantic)....the KU is linear only
Thanks for the reply, yeah, I should have said that too. I meant the C band.
What I meant is:
If I can get C band V/H and L/R at the same time wit this LNB? Similar to what I can do with the International Chaparral LNB, which can get Ku, and C-Band V/H and L/R at the same time.
What I meant is:
If I can get C band V/H and L/R at the same time wit this LNB? Similar to what I can do with the International Chaparral LNB, which can get Ku, and C-Band V/H and L/R at the same time.
With the plate in, I think you can only receive circular signals, you might pick up some of the strong linear signals, at lease that is the case with my 1.2 Meter dish.
I think the problem is that the dielectric plate will degrade linear signals. So, you may still be able to receive linear polarity signals but the strength of those signals will probably be greatly reduced.
Are you guys sure about that? I would think that the dielectric plate would affect Ku also or at least that would be the case with this feedhorn. Now some of the corotor and similar type feedhorns are designed such that the Ku portion is actually a smaller waveguide within the larger c band waveguide and it's opening is at the very front of the feedhorn at the same point as the opening of the C band waveguide. In these type feedhorns it might be possible to install a dielecetric slab such that it would only go from the inside of the C waveguide to the outside of the Ku waveguide and thus only affect C band.
One solution, I've seen used before is to glue a dielectric slab to the outer surface of an extra cap that covers the mouth of the feedhorn. Then whenever you wish to receive circular signals you can go out to the dish and install this special modified cap in place of the existing one. When you do this you have to remember to orient the cap such that the slab is at approximately a 45 degree angle to the 2 probes inside the feedhorn.
Are you guys sure about that? I would think that the dielectric plate would affect Ku also or at least that would be the case with this feedhorn. Now some of the corotor and similar type feedhorns are designed such that the Ku portion is actually a smaller waveguide within the larger c band waveguide and it's opening is at the very front of the feedhorn at the same point as the opening of the C band waveguide. In these type feedhorns it might be possible to install a dielecetric slab such that it would only go from the inside of the C waveguide to the outside of the Ku waveguide and thus only affect C band.
One solution, I've seen used before is to glue a dielectric slab to the outer surface of an extra cap that covers the mouth of the feedhorn. Then whenever you wish to receive circular signals you can go out to the dish and install this special modified cap in place of the existing one. When you do this you have to remember to orient the cap such that the slab is at approximately a 45 degree angle to the 2 probes inside the feedhorn.
- Status
