Random Ramblings

Further javAPRSSrv ports update (I know again!)

After some consultation with the T2 Sysops I now have my javAPRS mirrored like that of a T2 server, but without T2 status! (I need a fixed IP to become one) So here is the list of amended ports…

Available Ports
Port Number Description
1314 Messaging Only Feed
8080 HTTP POST Submission Port
10142 VK2 Feed
10143 VK3 Feed
10144 VK4 Feed
10145 VK5 Feed
10146 VK6 Feed
10147 VK7 Feed
10148 VK8 Feed
10149 SATGATE Feed
14577 Your Position + 100km
14578 ZL Feed
14579 VK/ZL Feed
14580 User Definable Filter Port
Random Ramblings

Available ports for javAPRS

Since changing from APRSD to JavAPRSServ the ports that one can connect to have also changed!

The old ports have been removed, leaving now only 3 to connect to and 1 HTTP port

1314: Message-only Feed

10152: Full APRS-IS Feed (limited to within 300Km of my location)

14580: User-defined Filtered Feed

14501: HTTP status page (this is the only port viewable with a web browser!)

you can telnet into the first 3 however the information you receive back won’t make much sense unless you are using an APRS compatible application to interpret the data!

APRS uses AX25 to send and receive GPS positions, messages and objects for Amateur Radio use.

Nonprofit Random Ramblings

APRS 40m Gateway VK7HSE-4

After some extensive testing in Australia/New Zealand on 40m (7MHz) I have now setup a full-time 40m Gateway. The centre frequency for this is 7.034.300MHz (sideband irrelevant) so your TNC/Soundcard set-up will determine what you will need to set your radio frequency to.

The set-up for the Gateway is as follows…

  • Yaesu FT-847 transceiver (100w)
  • PK-232MBX (with DSP)
  • Hustler 5-BTV
  • Philips PRM-8030 (VHF)
  • MFJ-1270b (TF2.7b)

The software in use is Linux AX25 Kernel and Digi_NED v0.39 and APRSD for my I-Gate (VK7HSE-3) I would appreciate signal reports if this is possible!


40m APRS Trials

Recently on the OZAPRS mailing list there was the suggestion of setting up an APRS network on 40m (7MHz) this has been used successfully in New Zealand for some time and I have in the past attempted to initiate similar but with no takers! So what have I seen on 40m thus far? here’s a screen shot of my XASTIR viewing the South East of Australia… UPDATE: the gallery plug in was removed so images are no longer available

Random Ramblings

TinyTrak4D as Sat-Gate for ISS

A few days ago I put my TinyTrak4D onto the ISS packet frequency of 145.825MHz.  Well was I surprised to see this morning some success !!!

Nonprofit Random Ramblings

TinyTrak4 wiki update

I’ve made some updates to the TinyTrak4 wiki. I’ve yet to complete this but I’ll get back to it soon! I have to admit that it has taken a little longer to get sorted than I thought it was going to! As I use Linux these days I’ve been using Virtual Box to run Windows-XP so that I can get the screen shots! this has proven time consuming (but not a hindrance!) to review the changes you can visit the following link…

Random Ramblings

APRS on 20m (14MHz)

As most of the Amateur Radio community know there is HF APRS on the 30m band. Well there is a trial currently happening (again) on the 20m band. This was started up a few weeks ago by Ray VK2TV.  Now depending on what packet radio equipment you have (TNC) the frequency that you will need to monitor will vary depending on the tones used by your TNC/Sound Card/Tracker.  Most TNC’s are either 1600/1800Hz but some older ones (like the PK-232) use 2110/2310Hz.  So if you start listening around 14.105MHz USB you can then fine tune form there!

Now as the HF band conditions haven’t been too good! you may not hear much! but be persistent… Currently there is only two fixed stations active that is Ray VK2TV-4 & myself VK7HSE. I’m just using a PK-232MBX TNC to monitor if sufficient traffic starts to use this the I’ll integrate this into my I-Gate so that traffic that I hear will be passed to the APRSIS system.

Random Ramblings


UPDATE: the gallery plug in was removed so images are no longer available

Here are some photos of my TinyTrak4D. As you can see the case size is rather large compared to it’s contents! However, I’m planning on placing a small switch-mode power supply in there so that I then have the option to either use mains power or portable DC. The current firmware I’m testing is the TinyTrak4D Alpha Code 0.4 This gives the functionality of a Tracker, KISS TNC & Digipeater!

For more details on functionality & firmware updates please visit Byon’s website at…

Nonprofit Random Ramblings

Packet Radio Station

UPDATE: the gallery plug in was removed so images are no longer available

As my hobby is Amateur Radio, one of my main interest is Packet Radio. Now just what is Packet Radio ???  Packet Radio is as the title implies, that is that DATA is sent in packets (short bursts) over a radio.There are many forms of this in use commercially, but for Amateur Radio this is limited to a protocol call AX-25. For those of you that are in the IT industry you would have noticed the key word here (X-25) so AX-25 is a non-commercial variant of this.

I’m active on the 40m (7.0 – 7.3 MHz) Amateur Band using 300 baud. For this I’m using a PK-232MBX & Yaesu FT-847 & FC-20. The dial frequency on my radio is 7.039.690 LSB and as the PK-232 uses 2110/2310Hz tones my “CENTRE” frequency is 7.037480 +/-

I also run the APRS I-Gate for this part of the world! for this I use a MFJ-1270b & PRM-8030. The software used is APRSD, This is a Linux program that is dedicated to the task! I also use XASTIR to view and monitor the national APRS frequency of 145.175MHz.

I also occasionally use the local Packet BBS of VK7HDM for this I use a second PK-232 & FT-5200 the frequency used is 147.575MHz. The last image of the Kantronics KPC-9612 this is currently not in use! However I have used this on PCSAT-2 & GO-32 from time to time…