This lnb is more than 13 years old but, in my opinion, it's still one of the best commercial universal lnbs ever produced! This lnb receives the Ku bands 10.7-11.7Ghz and 11.7-12.75Ghz.
Like most lnbs, this is an LNBF (lnb+feed) unit, but with one particularity: mechanically it is not a single casting unit like your typical lnbf. Instead, the feedhorn is attached to the lnb by two screws. One of the benefits of this approach is that just by attaching a different feed you can use the lnb with satellite dishes of different f/d ratios without sacrificing performance. And indeed, Sharp sold this lnb with at least to different feedhorns.
The feedhorn is hermetically sealed on the front (with a plastic cap) and in the back (with a thin plastic film). Since the F connector is also sealed, when the feed is attached the electronics are fully protected from the environment.
But, inside the top casing you can also see a pill type humidity absorber.
The lnb uses NEC's NE3210S1 super low noise HJ FET transistor for first stage amplification. This device is identified by the K marking code and has a 0.35 dB typical noise figure at 12Ghz. Sharp spec's this lnb with an 0.4 dB average NF. Despite using DRO oscillators, this lnb has good frequency stability and works well with all but the very lowest symbol rate broadcasts. This lnb has good wideband response and is a good choice for fringe area reception. For example, it would be a good choice for reception of Astra 2 28ยบ E UK beam in fringe footprint areas, where the popular FTA FreeSat service (BBC, ITV, Channel 4, etc) is broadcasted.
Bottom pcb view with the two (vertical and horizontal) signal probes.
Lnb housing with sealed F connector output.
Download the Sharp BS1R6EL100W specification sheet
here.
Download the NEC NE3210S1 HJ FET transistor datasheet
here.
Is this LNB good with prime focus dishes?
ReplyDeleteThis LNBF is for Offset dishes.
ReplyDelete