[amsat-bb] Re: simplex/duplex terminology

[(kp4tr)Ramon Gonzalez]

Broadcast?

Sent from my Adobe Flash and Java challenged iPhone

On Jul 27, 2011, at 3:24 PM, "Nigel A. Gunn, W8IFF/G8IFF" <nigel at ngunn.net> wrote:

> Art...
> What's the definition then of a one way only link, as in a TLM channel 
> or beacon?
> 
> 
> On 07/27/2011 06:54 PM, W4ART Arthur Feller wrote:
>> No need to guess or try to write new definitions.  Here are definitions accepted by all administrations around the world and included in the radio regulations:
>> 
>> RR 1.125 simplex operation: Operating method in which transmission is made possible
>> alternately in each direction of a telecommunication channel, for example, by means of manual
>> control2.
>> 
>> RR 1.126 duplex operation: Operating method in which transmission is possible
>> simultaneously in both directions of a telecommunication channel2.
>> 
>> RR 1.127 semi-duplex operation: A method which is simplex operation at one end of
>> the circuit and duplex operation at the other.2
>> 
>> 
>> 2 1.125.1, 1.126.1 and 1.127.1 In general, duplex operation and semi-duplex operation require two frequencies
>> in radiocommunication; simplex operation may use either one or two.
>> 
>> I hope this helps.
>> 
>> 73, art…..
>> W4ART  Arlington VA
>> 
>> 
>> 
>> http://afeller.us
>> 
>> _______________________________________________
>> Sent via AMSAT-BB at 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 at 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