Re: [digitalradio] The ARQ Advantage?

2009-06-26 Thread Bill V WA7NWP
> AX25 allows several stations to operate within a bit of spectrum wide enough > for one. For example, up to a dozen Q15x25 stations can operate within one > 1k to 3k ( depending on how you scale the modems ) slice of spectrum. > > ARQ modes that do not operate under AX25 are incapable of this, and

Re: [digitalradio] The ARQ Advantage?

2009-06-25 Thread Charles Brabham
Message - From: Rud Merriam To: digitalradio@yahoogroups.com Sent: Thursday, June 25, 2009 10:31 PM Subject: RE: [digitalradio] The ARQ Advantage? Ah, AX.25 is an ARQ mode. How is it different from other ARQ modes vis-a-vis "evaluation"? - 73 - Rud Merriam K5

RE: [digitalradio] The ARQ Advantage?

2009-06-25 Thread Rud Merriam
acket.org] Sent: Thursday, June 25, 2009 10:24 PM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] The ARQ Advantage? Hello, Tony! The advantage you mention for ARQ modes is in fact their primary drawback in the environment we inhabit as amateur radio operators, which is shared spectrum.

Re: [digitalradio] The ARQ Advantage?

2009-06-25 Thread Charles Brabham
ting something that does not fit your working environment. 73 DE Charles, N5PVL - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Thursday, June 25, 2009 4:56 PM Subject: [digitalradio] The ARQ Advantage? All, It would seem that ARQ mode

[digitalradio] The ARQ Advantage?

2009-06-25 Thread Tony
All, It would seem that ARQ modes would have some advantage on a disturbed HF channel since the data is checked and repeated in an attempt to achieve error-free throughput. In theory, the non-ARQ mode will lose data when the channel fades below threshold where the ARQ mode should detect the