Hi Mike,
Consider these:
-Full Duplex is receiving and transmitting at the same time, typically on different frequencies (bands).
-When working satellites in this mode, you are doing the same thing as their transponder is :-)
-When you hear your / another signal in the receiver, presuming it and the transmitter are tuned to the right frequencies, it represents what you or other stations are transmitting to the satellite.
Does that help?
73,
Lowell K9LDW
------ Original Message ------ Received: Wed, 27 Jul 2011 07:29:45 AM CDT From: "Mike" mikef1234@buckeye-express.com To: amsat-bb@amsat.org Subject: [amsat-bb] Full Duplex?
I'm having a difficult time of understanding the concept of Full Duplex.
Can
anyone explain it to me? I have the ARRL satellite book, read about it in there and Wikipedia. I still didn't understand how it works with a transceiver setup like we use.
Mike N8GBU
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
2m on your local repeater is simplex as you talk then listen. Your telephone is full duplex as you can talk but still hear the other person.
Tom NY4I
PS Did you really mean full Doppler?
On Jul 27, 2011, at 9:23 AM, "Lowell White" whiteld@usa.net wrote:
Hi Mike,
Consider these:
-Full Duplex is receiving and transmitting at the same time, typically on different frequencies (bands).
-When working satellites in this mode, you are doing the same thing as their transponder is :-)
-When you hear your / another signal in the receiver, presuming it and the transmitter are tuned to the right frequencies, it represents what you or other stations are transmitting to the satellite.
Does that help?
73,
Lowell K9LDW
------ Original Message ------ Received: Wed, 27 Jul 2011 07:29:45 AM CDT From: "Mike" mikef1234@buckeye-express.com To: amsat-bb@amsat.org Subject: [amsat-bb] Full Duplex?
I'm having a difficult time of understanding the concept of Full Duplex.
Can
anyone explain it to me? I have the ARRL satellite book, read about it in there and Wikipedia. I still didn't understand how it works with a transceiver setup like we use.
Mike N8GBU
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
No it's not. 2m on your local repeater is half duplex, where you can talk or listen but not both simultaneously. Simplex is where you can talk OR listen but never do both.
On 07/27/2011 02:43 PM, Thomas Schaefer wrote:
2m on your local repeater is simplex as you talk then listen. Your telephone is full duplex as you can talk but still hear the other person.
Tom NY4I
participants (3)
-
Lowell White -
Nigel A. Gunn, W8IFF/G8IFF -
Thomas Schaefer