amplifiers

The downlink is actually 1kbps, with 2kbps optional, by using both amplifiers with opposite circular polarizations.

Good class-D amplifiers are more recent, and they give real improvements in battery life over older designs.

Right now New Horizons is downloading at 2.11 kbs to Canberra, the max with both amplifiers transmitting with opposite circular polarizations.

But designing high-frequency amplifiers, mixers, and such can now even be done by computers using optimization techniques such as genetic algorithms.

The sad part is how people with $1000 amplifiers often have worse components than an amp built from $30 worth of parts.

Old microphones, amplifiers, and vinyl meant that with the restrictions of the media, what you had either sounded good or really terrible.

It feels like a mistake to separate the literature on oscillators and amplifiers...

I've been trying to understand the noise temperature of erbium doped fiber amplifiers- not nearly as good as DSN masers.

Be sure to check out the rest of this guys stuff, like the homemade CRT, flame triode, magnetic amplifiers, etc.

But for amplifiers, it seems that THD, frequency response, and phase response would capture everything you need to know to fully characterize the component.

You do need to make sure that there isn't so much power in the intereference that it does nasty things like send amplifiers into compression.

In hardware, operational amplifiers are affected by thermal noise, magnetic fields, parasitic capacitance, etc.

Then you're getting entropy from the thermal noise of the amplifiers which is much harder to interfere with than atmospheric radio." But where do you find $10 dongles?

I'm also curious about the price of "high-end" amplifiers.

And for anyone who didn't see it, to call this mode "optional" is putting it extremely mildly: to get enough power to run both amplifiers at once, they have to shut down the spacecraft's guidance system (!) and keep it pointed at Earth by using the thrusters to spin it up like a top.

Amplifiers and cables are mostly made of commodity parts as far as I can tell.

Amplifiers have gotten more convenient, being lighter, cheaper, with better remote control and standby features, while the sound is still good.