I have a question in mind regarding transmitters and receivers. Let's say we have a dish then a coaxial cable connecting our dish to the TV. Can we consider the Dish as a transmitter \$T_x\$ and the TV coaxial input as the receiver \$R_x\$ ? Will the signal passing through the coaxial cable (our channel in that case) be simply the analog electrical signal but amplified? Or is there some intermediate processing?

  • 1
    \$\begingroup\$ Satellite dishes for TVs tend to have head amplifiers. \$\endgroup\$ – Andy aka Sep 7 at 19:24
  • \$\begingroup\$ That coax likely carries DC power, and digital control signals, as well as "TV" \$\endgroup\$ – glen_geek Sep 7 at 20:30

The thing at the focus point of your satellite TV dish is called LNB; you might want to look up what that abbreviation stands for ;)

In short, amplified, pre-filtered and mixed.

| improve this answer | |
  • \$\begingroup\$ Ooo that's quite interesting thank you. So lets say we are looking at the signal from the dish to the TV can we say the TV coaxial port is the receiver and the LNB is actually the transmitter of the signal at the coaxial cable ? \$\endgroup\$ – AcademicalResearcher Sep 7 at 20:48
  • \$\begingroup\$ if you want to, yes. But, honestly, when we say "transmitter" and "receiver" we often do that to describe that a noisy, signal-altering channel happens in between. And, with good chance, we can ignore all the cable effects, so really, I'd just consider the LNB and the coax cable part of the receiver. \$\endgroup\$ – Marcus Müller Sep 7 at 20:57

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.