Aug 08

Just ordered this board for my EchoLink project

sv1afn-DRA818board

For more info: https://www.sv1afn.com/dra818.html

I ordered the VHF board for now until the UHF board is finished.

 

Image

New toy arrived!

My new toy arrived!! Yaesu FT2D with APRS and Fusion!

IMG_20160705_181524

Jul 01

Information on the Blue Stack Shields – What does what!

BlueStackOverzicht2

Jun 25

Working on a Windows version of BlueDV ( DMR only )

Working on a BlueDV windows version. DMR only!

Software will be also free.

BlueDV-windows

 

bluedv-windows

Mar 24

DMR on a Arduino UNO

Funny project… ( not finished )

What I used:

– DVMEGA dual band on a Arduino MEGA
– Arduino UNO with ethernet module
– Hytera PD-365
– ( software I wrote)

The UNO is logged on to DMR and sending the DMR frames to the DVMEGA.

At this moment I can only listen to DMR. Hope to have time soon to make the transmit part.

 

May 16

Connection to HAMNET

Two weeks ago I placed a Mikrotik RBSXT-5nDr2 on the roof of my house.

Yesterday I managed to get the HAMNET connection from my house to the Alticom Tower in Ijsselstein. My public 44.x.x.x ip address is operational now!

GerbrandyToren

 

 

 

 

 

 

 

 

 

 

 

 

 

The distance between my house and the tower is around 8km.

Mikrotik-LinktoHAMNET

 

 

 

 

 

 

 

 

 

 

 

 

More information/configuration will follow soon!!

 

Feb 08

My new echolink hotspot!

I was looking for a lightwight echolink hotspot for within my house. I have one hotspot for DSTAR ( see picture ) but never found a solution for echolink.IMG_20140527_203049
On ebay I found the DRA818U ( UHF ) and DRA818V ( VHF). Both transceivers are very small and have many options like CTCSS, SQL pins, serial poort for configuration changes and a good frequency range.
See specs: DRA818U – Dorji

The software I use is svxlink version 14.08. In this version you can use the GPIO pins on the Raspberry PI.
Keep in mind that the DRA818 is working on 3.3V. You can see in my picture below that I use the 3,3V from the raspberry. Please don’t do this on older models of the raspberry PI!
This will fry your raspberry!! Older raspberry’s can only give 50mA!!

On the DRA818 there is also a squelch PIN ( pin1 ). This pin is connected to one of the pins on the raspberry. This is a VERY handy solution for the detection of the incoming signal!!!!
In the past  I tried a lot of solutions in svxlink like VOX or CTCTSS. Most of the time CTCSS is filtered in the transceiver and VOX is to slow.

I left the DRA818 on low power. So it will not use more than 500mA an can be powered by the raspberry. If you put it in hight power the DRA818 will be very hot and eventually die. you have to cool the device.

Now I want to make a shield for it so I can put it directly on the raspberry.

IMG_20150208_113726

Feb 01

Yesterday I received my new DMR radio.

PD7L - PD-368

Yesterday I received my new PD-36X DMR radio!

Oct 29

BETA version of ircDDB remote for iPhone/iPad available!

Hi,

After a few nights and weekends coding in Objective C and Swift I finished the first BETA version of the ircDDB remote for IOS.

For anyone who wants to test the BETA. Please sent me an email ( info@pd7l.nl ) with your apple id email adres!
Apple provides an BETA deployment solution that only works on an IOS 8 device!!

This beta version of ircDDB remote is working with one ircDDB gateway and multiple radio’s. New versions will support more ircDDB gateways and will have the same functionality as the Android version. ( that’s the goal… 😉 )

Hope you like the this IOS version.. Was/is fun to make it!

iOS Simulator Screen Shot 29 Oct 2014 19.50.24iOS Simulator Screen Shot 29 Oct 2014 20.08.23

Update: The new version can handle two ircDDBgateways and multiple radio’s.
The BETA program only works on IOS 8 but the final release will be available from iPhone4 and IOS 7.1 ( and higher ).

Update (20 nov 2014): Apple is reviewing my app at this moment. Hopefully they will deploy it within a few days.

Update (25 nov 2014): Apple published the app to the apple store. You can download it for free now!

Greets and 73,

David PD7L

Oct 12

Working on a iPhone/Ipad version of ircddbremote

First impression of the app. Most of the code i rewrote from Java to Objective C and the basic functionality is working now. The biggest challenge is the screen layouts ( iphone 4, iphone 5, iphone 6, ipad2, ipad 3 and all in landscape and portrait ).

Yes.. I am colour-blind.. I hope it’s blue and not purple.. 😉

iOS Simulator Screen Shot 12 Oct 2014 08.54.32

Older posts «