A random collection of objects and subject I am interested in… or as my wife
would say obsessed with !!
I have decided to take the plunge and have a go at setting up an APRS station at my QTH, I had been thinking about doing this for some time and looking at the various options available.
The backbone of the project is going to be a Microsat WX3in1 Plus 2.0 -
I have been talking to a couple of local amateurs’ via email who currently have APRS stations in the hope that I will be able to lean on them for assistance in the early stages and they both deserve a mention, Dave G4PGO & Alec 2E0BCI have both offered some practical advice.
Something I am currently looking into is the need in some circumstances to apply for an NOV to run the station, I came across an article by Julian Moss G4ILO in his blog regarding this very issue titled APRS absurdity. It makes interesting reading and deserves more investigation.
It makes out that if you are leaving the station for unattended operation you need to nominate three closedown operators who can shut it down within 30 mins.
From what I understand the nominated closedown operators do not need to be radio amateurs, the just need access to the equipment.
I tried out the Wouxun KG-
The wiring is the same the on the KG-
I have now bought a Storno 6000 ex PMR which I am planing to use as the APRS radio, it was a reasonable price at £35 pre programmed with the northern area 2m repeaters and a selection of 2m simplex channels.
I will still have a go at setting up the Wouxun but the Storno can be set up on a permanent basis if I ever get around to applying for an NOV to run the station unattended.
Making the interface leads for the APRS side should be relatively easy, I just need
to get a 25 way D-
The connections for the to the WX3in1 are as follows.
Pins 1, 2, 14, are +12v shown in RED. Note pin 15 is also in RED, this is the Ignition input (+12V) which if it is not connected to +12V will result in the Storno not powering up with any control.
Pins 12, 13, 25, are Battery ground (0v) shown in Grey.
Next the connections to MINIDIN for WX3in1.
Pin 4 from the D-
Pin 10 from the D-
Pin 22 from the D-
Pin 18 from the D-
Be careful with the PTT, shorting the PTT output to a positive voltage can burn it out.
Storno with the WX3in1
Initially I found that the Radio RX LED on the WX3in1 would remain on when connected to the Storno, I contacted Mateusz SQ3PLX from Microsat who gave me some advice.
Mateusz advised me to increase the Squelch level on the WX3in1, this did not make much difference but he also advised me me to change “channel busy detect” to digital detect. That did the trick and the WX3in1 now works perfectly.