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History of ON0DAS

History of ON0DAS

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Version 1 (2003)

ON0DAS v1
ON0DAS v1

The first version of ON0DAS was build in 2003 by ON8TT and ON7UZ.
It was installed by the people of UBA/DST on the site of the previously Packet Node ON0APD (ON0APD was dismantled after users and links disappeared due to cheap broadband internet access becoming available everywhere)

The hardware was a pentium computer, with a 2m TRX and a TNC. The software, digined, was ran from a DOS bootfloppy
The antenna was mounted on the pylon still standing from ON0APD, at 24m HAAT.
The system operated on 144.800Mhz, the european APRS freq. on the 2m band.

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Version 2

ON0DAS v2
ON0DAS v2

A while after the first version had been running, the hardware was exchanged with a new computer, a new TNC and a new TRX build by ON8TT.

The computer was a rackmounted model with more powerfull hardware and a harddrive. The system still ran fully on DOS, booting from the harddrive. digined was then loaded in memory and the harddrive put in standby.
This way, the system could run on low power requirements for a long time.

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Version 3 (2005)

ON0DAS v3
ON0DAS v3

In 2005 the need arised to clear the site, and a new and higher location was found (55m ASL). Meanwhile ON8TT had been busy building the third version of ON0DAS. A crew of UBA/DST-ers came over to help with the installation. A new antenna was mounted on the building and the hardware installed in a room at the attic.
The computer still ran DOS booted from a harddrive, which would go into standby after digined was running from memory.

A significant mile-marker for the ON0DAS lifetime was the expansion of the digipeater by a 70cm TRX on 430.5125Mhz. The software was configured for crossdigi usage and one of the first crossdigi's in Belgium was born.

Currently ON0DST is housed at the version 2 location.

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Version 4 (2008)

Late 2007, ON7UZ stopped being a SysOp of ON0DAS. A new SysOp entered the team: ON4SAX
One of the projects that was set for 2008 was building a new ON0DAS system that would run under Linux on a MiniPC, to get a much lower power usage. This version would also implement the new paradigm. Construction on what would become version 5 was started.

Early 2008, disaster. The PC from version 3 had crashed. Luckily, the software that would be running on the MiniPC was in beta phase, and this was rapidly deployed at the site of version 3. This way, version 4 was born with a new PC, running under digined under Gentoo Linux.

Version 4 has been shut down on 16 january 2009 and is now fully replaced by Version 5 at the new QTH

Version 5 (2008)

ON0DAS v5
ON0DAS v5

December 2008, version 5 was installed at a new location. The antenna is at 65m ASL. The choice for the new location was made because a free highspeed internet connection was available onsite. This way we would be able to run a javAPRSsrv server and a DxCluster.

This setups contains new tranceivers and TNCs with a MiniPC running Gentoo Linux.

This version is the first version that contains backup power. Since the computer runs on 240Volts and we didn't want to build a custom ATX powersupply, the backup power is provided by a UPS unit connected to a 80Ah 24V battery (2x 12v).

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Version 6 (2009)

ON0DAS v6
ON0DAS v6

March 2009, an upgrade was done to version 6. Since we were having troubles with the TNC's and tranceivers, the TNC's and tranceivers from version 4 are reused in version 6. Furthermore we have switched to a much smaller miniPC (7x7x4cm) that runs on 5V. It has a 1gb CFDisk with SLAX Linux on it, running Digined and saxIgate.
Since this setup is much smaller, there is now 1 empty cabinet. We can use this for another project in the making on the same site.
We are still running at 220V with a UPS, but since the digipeater is now fully running with a 12v feed, this will be replaced with a 12V backup system to eliminate the powerdrain of the UPS.
This version runs at 28W in RX mode and 90W in dual-TX (both tranceivers on air)

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Future

Since everything is running on 12V, we can connect the batteries parallel. This will be giving us 160Ah of backup power and ON0DAS will have the ability to run autonomously for a long time in case of a disaster.

Furthermore we are planning to run a DX-Cluster on the same site on a frequency in the high-end of the 70cm band.
This will probably be expanded to a full featured AX25-Node.