###############################################################################
##									     ##
##	File:     MSGTYPES						     ##
##	Author:   Wolfgang Rupprecht <wolfgang@capsicum.wsrcc.com>	     ##
##	Created:  Thu Feb  4 21:53:57 PST 1999				     ##
##	Contents: description of the msg's out of the decoder		     ##
##									     ##
##	Copyright (c) 1999 Wolfgang Rupprecht.				     ##
##	All rights reserved.						     ##
##									     ##
##	$Id: MSGTYPES,v 1.3 1999/08/24 20:52:10 wolfgang Exp $
###############################################################################

M	state change: WORD_SYNCING -> WORD_SYNC
M - sync change notifications.
	NO_SYNC / WORD_SYNC / FRAME_SYNCING / FULL_SYNC

H	9	268	1388.4	4	5	2
H - Header 
	frame type
	station id
	zcount (sec)
	seq number	
	length of frame
	station health

S	6	0	233	1388.4	-1.418	0.160
S - pSeudorange corrections  msg-1, msg-9
	SV PRN 
	udre
	issue of data	
    	zcount
	pseudo-range correction 
	range rate 

A	40.4364	-124.4020	333	292.0	0	885	2
A - Almanac  msg-7
	lat
	lon
	range
	freq
	health
	id
	bitrate 0 - 50bits/sec 1 - 100 2 - 200
    NB: this does not have to be the almanac for the transmitting
    station.  It may well be an alternate.


R	-2703285.78	-4256587.55	3892573.38
R - Ref station position in X Y Z  msg-3
	X
	Y
	Z

T - special msg-16
	7-bit packed ascii

N - null frame recved msg-6
	none

C - constellation health msg-5
    	sat-id
	issue-of-data-link
	data-health
	c/n0
	health enable
	news navigation data
	loss of satellite warning
	time to unhealthy
    	unassigned
    	reserved

DGPS radio status messages:

f       3100    200
f - frequency and baudrate msg
	freguency in 100hz units.
	baud rate

s       321     36
s - signal strengh
	signal strength in dBuV
	SNR in dB

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