[OZAPRS] 4G APRS

vk4tec at tech-software.net vk4tec at tech-software.net
Sun Dec 17 22:02:24 AEDT 2017


19 OTHER PACKETS 

 

Invalid Data or Test Data Packets 

 

To indicate that a packet contains invalid data, or test data that does not conform to any standard APRS format, the , Data Type Identifier is used. For example, the Mic-E unit will generate such a packet if it detects that a received GPS sentence is not valid. Invalid Data / Test Data Format , Invalid Data or Test Data Bytes: 1 n 

 

Example ,191146,V,4214.2466,N,07303.5181,W,417.238,114.5,091099,14.7,W/GPS FIX 

 

Invalid GPS data from a Mic-E unit. 

 

The unit has interpreted the V character in the received sentence to mean the data is invalid, and has stripped out the $GPRMC header. 

 

All Other Packets Packets that do not meet any of the formats described in this document are assumed to be non-APRS beacons. 

 

Programs can decide to handle these, or ignore them, but they must be able to process them without ill effects. APRS programs may treat such packets as APRS Status Reports. This allows APRS to accept any UI packet addressed to the typical beacon address to be captured as a status message. 

 

Typical TNC ID packets fall into this category. Once a proper Status Report (with the APRS Data Type Identifier >) has been received from a station it will not be overwritten by other non-APRS packets from that station

 

From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of vk4tec at tech-software.net
Sent: Sunday, 17 December 2017 9:00 PM
To: 'Australian APRS Users' <ozaprs at aprs.net.au>
Subject: Re: [OZAPRS] 4G APRS

 

Thanks Scott

 

I will look I thought it was hard

 

I have a 4 constellation GPS and a 4G Dongle 

 

10 Hz

 

Andrew 

 

From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of Scott Evans (VK7HSE)
Sent: Sunday, 17 December 2017 8:58 PM
To: Australian APRS Users <ozaprs at aprs.net.au <mailto:ozaprs at aprs.net.au> >
Subject: Re: [OZAPRS] 4G APRS

 

There’s no difference in the setup for using a 4G USB dongle on the Raspberry Pi that is done on any current Linux distro...

 

Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986>  for Windows 10

 

From: vk4tec at tech-software.net <mailto:vk4tec at tech-software.net> 
Sent: Sunday, 17 December 2017 21:56
To: 'Australian APRS Users' <mailto:ozaprs at aprs.net.au> 
Subject: Re: [OZAPRS] 4G APRS

 

Actually I was more interested in the 4G Raspberry Pi part 

 

A

 

From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of Mark Jessop
Sent: Sunday, 17 December 2017 8:36 PM
To: Australian APRS Users <ozaprs at aprs.net.au <mailto:ozaprs at aprs.net.au> >
Subject: Re: [OZAPRS] 4G APRS

 

I still don't get what you're after.

 

You want to send raw NMEA to where? 

You certainly can't send raw NMEA into APRS-IS. (Unless you send it as a comment, but why?!!)

 

The APRS position format does have limited resolution yes, but it is good enough for most applications (unless you absolute MUST know what side of the road that car is on...).

 

- Mark

 

 

On Sun, Dec 17, 2017 at 8:29 PM, <vk4tec at tech-software.net <mailto:vk4tec at tech-software.net> > wrote:

Graeme

I have an IPhone and iPad

I want to send RAW NMEA

As APRS degrades the position and dumps reports

Andrew


-----Original Message-----
From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au <mailto:ozaprs-bounces at aprs.net.au> ] On Behalf Of Graeme
Sent: Sunday, 17 December 2017 8:27 PM
To: Australian APRS Users <ozaprs at aprs.net.au <mailto:ozaprs at aprs.net.au> >
Subject: Re: [OZAPRS] 4G APRS

Andrew,

If you have an Android phone then you could use Aprsdroid on the phone.

Graeme 2HFG

-----Original Message-----
From: Andrew Rich
Sent: Sunday, December 17, 2017 9:06 PM
To: ozaprs at aprs.net.au <mailto:ozaprs at aprs.net.au> 
Subject: [OZAPRS] 4G APRS

Is anyone using a Raspberry Pi with a 4G dongle and GPS to end APRS ?

Andrew


Sent from my iPhone
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