[aprssig] KISS mode definition request

[Ron Stordahl]

Stephen

Doesn't look like you can send a calibrate signal to set deviation via KISS?

Ron, N5IN

Stephen H. Smith wrote:
> CTDay at lbl.gov wrote:
>>
>> Could someone post a definition of KISS mode to the APRS Wiki, 
>> please? I’ve seen lots of references to it but no definition 
>> anywhere. I don’t have any idea what is being talked about. Thanks.
>>
>>
>
>
> A conventional TNC is a combination of a radio-oriented modem and a 
> command interpreter in firmware. When packet radio was born in the 
> late '70s/early '80s, most users were using dumb ASCII terminals (not 
> computers). The interpreter would process commands hand-typed from a 
> keyboard to set the call sign, digipeater path, set monitor modes, 
> beacon intervals, beacon message contents etc.
>
>
> The TNC would have two modes. One was ("COMMAND") where what you typed 
> was "swallowed" by the TNC hardware as a command. The other was 
> "CONVERSATIONAL" where what you typed was sent over the air instead. 
> To get from the COMMAND mode to the CONVERSATIONAL mode you typed the 
> command "CONV <ret>. To get back from conversational mode back to 
> command, you would typically type CNTRL-C. The exact syntax of this 
> set of commands varies from one manufacturer to another.
>
>
> Today, virtually all TNCs are used connected to a computer running 
> specialized software instead of a dumb terminal. The variety of 
> different command formats is a constant headache to software writers 
> that have to accommodate numerous different ways of saying the same 
> things to different pieces of hardware. Not to mention having to 
> constantly toggle the TNC between the COMMAND mode and the CONV mode.
>
>
> The KISS (literally an acronym for "Keep It Simple Stupid") mode 
> bypasses the human-oriented command interpreter inside the TNC, and 
> uses the TNC strictly as a PAD (packet assembler/disassembler) and 
> modem. Once commanded into the KISS mode, the assumption is that 
> ANYTHING sent into the TNC is to be transmitted. Period. The process 
> of interpreting commands, or acting on incoming data from the RF side, 
> is handled entirely inside a program running on the PC. Theoretically 
> the KISS interface behaves identically on ALL hardware with the KISS 
> capability. (Some very old TNCs don't support KISS.)
>
>
> The KISS mode can also bypass any digipeater functions that may be in 
> the TNC hardware/firmware, and allow a much more sophisticated 
> digipeater function to be implemented purely in software on the PC. 
> This software-based digipeater will function in the same manner on any 
> TNC with KISS capability. This is unlike TNC-firmware-based digis 
> where capabilities can vary wildly from one mfr to another, or from 
> one firmware revision to another.
>
>
> KISS mode also makes possible much simpler and cheaper KISS-only TNCs 
> since they don't need the extensive firmware ROMs and processor 
> "horsepower" to interpret human-typed commands. However this kind of 
> simplified modem-only TNC will ONLY work with a KISS-aware program or 
> device.
>
>
>
>
>
> Stephen H. Smith wa8lmf (at) aol.com
> EchoLink Node: 14400 [Think bottom of the 2M band]
> Home Page: http://wa8lmf.com
>
>
> NEW! JavAPRS Filter Port 14580 Guide
> http://webs.lanset.com/wa8lmf/aprs/JAVaprsFilters.htm
>
> UI-View Misc Notes and FAQ
> http://webs.lanset.com/wa8lmf/aprs/UIview_Notes.htm
>
> "APRS 101" Explanation of APRS Path Selection & Digipeating
> http://webs.lanset.com/wa8lmf/DigiPaths
>
> Updated "Rev G" APRS http://webs.lanset.com/wa8lmf/aprs
> Symbols Set for UI-View,
> UIpoint and APRSplus:
>
>
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>
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