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> (and someone outside in the frost with a big antenna listening to the noise floor and tracking) I've wondered about this, why were consumer satellite dishes
by phreeza 6y ago
> (and someone outside in the frost with a big antenna listening to the noise floor and tracking)
I've wondered about this, why were consumer satellite dishes so huge back in the day, and now we seem to be able to get away with much smaller ones?
Is the transmitter power on to he satellites higher than it used to be? Or is it better receiver electronics? Or better algorithms/codecs?
- madengr 6y agoYes, all three in combination. GaAs PA, low cost GaAs LNA, and Turbo coding are what made it possible in the 90’s. You’ll notice that many dishes are wedged shaped than circular. This is to keep the beam width under the 2 degree spacing of geostationary satellites.
- karmicthreat 6y agoAlso we have increases the frequencies that we use. Back then it was C-Band, now everyone is using Ku or higher.
- Taniwha 6y agoThis was a home built circ polarised yagi (it was VHFish/UHFish, I forget the freq), it was big and a bit unweildy (a bit of 2x4 bolted to an upright) but not giant and not a dish