half duplex tranmsission

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dickie757

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Half dup means nothing regarding the pluto. It is a full dup machine. If you want to tx on 400 and analyse the Doppler echo on 395, you can.
 

Clats97

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Half dup means nothing regarding the pluto. It is a full dup machine. If you want to tx on 400 and analyse the Doppler echo on 395, you can.
.... It says it's half duplex
Half dup means nothing regarding the pluto. It is a full dup machine. If you want to tx on 400 and analyse the Doppler echo on 395, you can.
After reading it seems it's half and full duplex. So what does that mean? Why am I not seeing anything on the spectrum analyzer.
 

mancow

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You're just excited and frustrated. We have all been there. You will probably stumble across something soon and it will all seem easy.
 

Clats97

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You're just excited and frustrated. We have all been there. You will probably stumble across something soon and it will all seem easy.
I just wanna know if what half duplex means and full duplex😒😒
 

mancow

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A half-duplex transmission could be considered a one-way street between sender and receiver. Full-duplex, on the other hand, enables two-way traffic at the same time. A communications channel can be used to communicate one way at a time or in both directions at once.
 

dickie757

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RF. Where does it go? How does it get there?

The port where you connect the jumper cable is called a SMA female. You should have gotten two stubby 90° antennas. RF either goes down the cable into a device, or an antenna. If there is no cable or antenna, the RF will "stay" in the final amplifier, and cause it to overheat possibly to the point of failure. If the RF goes to an antenna, and the frequency is close to or at the resonant characteristics of the antenna, than most of your RF energy will go into free air. If the radio freq is not close to the, or a, resonance of the antenna, then heat and a bit of free space RF will get out. Don't even think about asking about SWR.

Your latest post asks what half dup is. We already answered it. The device can receive and transmit, but not at the same time.

The Pluto is full duplex..... It can receive and transmit RF at the same time. Thunk of half dup as a stop sign. You must stop one thing to do the other, and full dup as a yield sign, you don't have to stop to do the other.
 

dave3825

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I'm confused.

Although I will gladly admit I'm not technically knowledgeable about these things.

rust me policescanner.ca man aka Renfrew thinks I'm a jammer, illegal operator, so many things he's accused me of. Real nice guy....

Oh I'm not using this to transmit voice lol. I need it for other things. Especially the spectrum analyzer

Eating-Popcorn-Soda.gif
 

dickie757

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The spec-an is a function of the software, not the Pluto. Pluto is dumb. He has a mouse as an owner... Oh wait, wrong idea. Pluto is dumb. It is just a bunch of chips that can do what you tell it to do.
 

mmckenna

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I just wanna know if what half duplex means and full duplex😒😒

How about thinking of it this way:

Simplex is a single lane one way street. Cars can only go north.
Half duplex is a single lane street. Cars and go north and they can go south, but not at the same time. (gotta take turns)
Full duplex is a two lane street. Cars can go north and they can go south, at the same time, in their own lanes.

My wife is simplex, AKA, Transmit Mode. She talks, I listen. I'm not allowed to talk back.
A walkie talkie is half duplex. You can only cuss the other guy out when they stop transmitting.
A telephone is full duplex. You can cuss out the telemarketer at the same time they are talking about you cars extended auto warranty
 

ecps92

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@Clats97 I highly suggest studying for a ham radio license.

But, radios are classified simplex if they do one thing. That could be transmit OR receive, but not both. Half duplex means they can do both xmit and receive, but not at the same time. Full duplex means they can tx and rx at same time. And depending on how much money you spent, how close to the same frqency.
Simplex only means transmitting on the same frequency
 

Clats97

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How about thinking of it this way:

Simplex is a single lane one way street. Cars can only go north.
Half duplex is a single lane street. Cars and go north and they can go south, but not at the same time. (gotta take turns)
Full duplex is a two lane street. Cars can go north and they can go south, at the same time, in their own lanes.

My wife is simplex, AKA, Transmit Mode. She talks, I listen. I'm not allowed to talk back.
A walkie talkie is half duplex. You can only cuss the other guy out when they stop transmitting.
A telephone is full duplex. You can cuss out the telemarketer at the same time they are talking about you cars extended auto warranty
LOL this is very good but one little thing. What does that actually translate to, like, it's an SDR, I'm not able to transmit my voice thru it I think so what the hell am I transmitting? Using the signal generator doesn't show up on my physical spectrum analyzer
 
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