https://en.wikipedia.org/wiki/Low-noise_block_downconverter
http://www.satsig.net/lnb/explanation-description-lnb.htm
https://en.wikipedia.org/wiki/Low-noise_block_downconverter#LNBFs
LNB with feedhorn (LNBF)
http://www.satsig.net/lnb/explanation-description-lnb.htm
Several Variations
C-band LNB
Ku-band LNB
Universal LNB ("Astra" LNB)
Multi-output LNBs
Dual, twin, quad, and octo LNBs
Quattro LNBs
Satellite channel router (SCR), or unicable LNBs
Wideband LNB
Optical-fibre LNBs
Monoblock LNBs