Transmitter

(a) VHF transceiver (1 transmitter 2 receivers)

The transmitter was destroyed.

You must shut down your transmitter.

Satellite uplink 67 600

And the transmitter has a limited battery life.

So, how do you turn the transmitter on?

There must be some reason for their silence up there.

It also only supports a single Bluetooth radio.

Keep a good radio watch, but don't use the transmitter.

If you order it, sir, of course I'll have to shut my transmitter down.

They are situated at , , , , , and .

MF transmitter, directional antenna FM transmitter Satellite uplink

Dada, dada, da, da, da. What does that mean? Well, my transmitter only carries to the neighboring islands... a little over 100 miles.

Yes. Suppose it's over.

The sender just reads through all the bits, and sends a pattern of voltage.

And the sender will say, let's see, you know, we'll just choose an example.

It's taken us all a year since then to build a transmitter capable of spanning the enormous distance.

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And so what, what the receiver can do, is just ask the sender to re send that packet.

So it consists of two parts, what we call an encoder and a transducer.

Why we built this lab. Assembled the transmitter. That's why we've worked together all these years.

Microwave link terminal (FM trans. 1.6 1.8 GHz)

And so what the sender can do is go through these numbers and just add them up.

So on the left is the encoder alone, and on the right is from an actual blind retina, so the encoder and the transducer.

Gee, Nona, why didn't you tell us there was a wireless outfit on this island?

Well, if we're getting answers, they have to have a transmitter as powerful as ours.

We expect you to believe the truth. Just the way the rest of the world believes.

How do you get back an accurate view of the color on Mars if you have a really terrible bandwidth to do it with?

Transmission stations Edwin H. Armstrong installed an FM broadcasting station on the top of Mount Washington in 1937.

Each PLB has a built in, low power homing device that transmits on a frequency of 121.5 MHz.

A transmitter with a mass of 0.5 kg delivered a phase modulated signal of 0.1 W at a frequency of 960.05 MHz.

Is the sender, before they send the packet they, you know, they can look at the whole packet and it's just a bunch of numbers.

And then the transducer then makes the output cells send the code on up to the brain, and the result is a retinal prosthetic that can produce normal retinal output.

In a typical implementation, the transmitter injects a constant current of 3.5 mA into the wires, with the direction of current determining the digital logic level.

It's a Band aid like system, and the way that you turn on the transmitter is you peel back the Band aid bandage, and that turns it on.

And what they've done here is they've put electrodes in its ganglia and its brain and then a transmitter on top, and it's on a big computer tracking ball.

There's another example of a really natural interaction in this system which is that, in addition to the pill, there's a transmitter that you need to stick to your body.

PLB is a small hand held device that emits a signal at 406 MHz that can be detected anywhere in the world using the COSPAS SARSAT satellite distress alert system.

And what they've done here is they've put electrodes in its ganglia and its brain and then a transmitter on top, and it's on a big computer tracking ball.

And so, again, that action that you need to do to stick it on yourself is exactly the same action that you use to turn the transmitter on.

It turns out there's an enormous amount of information already available on that subject, which is the Mars rover problem. How do you get back an accurate view of the color on Mars if you have a really terrible bandwidth to do it with?

Europe The World Service employed a medium wave transmitter at Orford Ness to provide English language coverage to Europe, including on the frequency 648 kHz (which could be heard in parts of the south east of England).

So I bought one of those little kits that you could get to make a radio transmitter, and I got an old book and I carved out the inside and I hid it inside there, and then I placed it next to my dad and snuck back to my bedroom and tuned in on the radio so I could eavesdrop.

On 1 May 1965 the service took its current name of BBC World Service and the service itself expanded its reach with the opening of the Ascension Island relay in 1966, serving African audiences with greater signal and reception, and the later relay on the Island of Masirah.