References: <3E2A4A4E.39B01ABA@webaccess.net> <3E2A56B4.FFD8B424@webaccess.net> <3xBW9.107236$Qe5.email@example.com>
Subject: Re: what is the difference between a transceiver and transmitter?
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
Date: Sun, 19 Jan 2003 17:52:11 GMT
NNTP-Posting-Date: Sun, 19 Jan 2003 12:52:11 EST
Organization: Cox Communications
A transceiver is a combination transmitter/receiver in a single package. The
term applies to wireless communications devices such as cellular telephones,
cordless telephone sets, handheld two-way radios, and mobile two-way radios.
Occasionally the term is used in reference to transmitter/receiver devices
in cable or optical fiber systems.
In a radio transceiver, the receiver is silenced while transmitting. An
electronic switch allows the transmitter and receiver to be connected to the
same antenna, and prevents the transmitter output from damaging the
receiver. With a transceiver of this kind, it is impossible to receive
signals while transmitting. This mode is called half duplex. Transmission
and reception often, but not always, are done on the same frequency.
Some transceivers are designed to allow reception of signals during
transmission periods. This mode is known as full duplex, and requires that
the transmitter and receiver operate on substantially different frequencies
so the transmitted signal does not interfere with reception. Cellular and
cordless telephone sets use this mode. satellite communications networks
often employ full-duplex transceivers at the surface-based subscriber
points. The transmitted signal (transceiver-to-satellite) is called the
uplink, and the received signal (satellite-to-transceiver) is called the
I Doubt, Therefore I Might Be
73 From AC6V, who is QBF most of the time !!
Rod In Oceanside, CA
Home Page http://ac6v.com
DX Book http://ac6v.com/DXSAMPLE.htm
"AC6V" wrote in message
> Me thinks you ought to see the definition of transceiver at URL:
> I tried to keep it simple for the poster --- not get into all
> I Doubt, Therefore I Might Be
> 73 From AC6V, who is QBF most of the time !!
> Rod In Oceanside, CA
> Home Page http://ac6v.com
> DX Book http://ac6v.com/DXSAMPLE.htm
> "Bob" wrote in message
> > I don't agree. A box with a transmitter and receiver, independent of
> > another, has been called a 'transmitter-receiver.' Not a transceiver.