DL2SBA - HamRadio and more

IoT Lightsensor

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Worked all Germany contest 2015

This was my first participation in the WAG contest since 2010 - and I must say, it was a pleasure!

I managed to complete 472 QSOs all in CW :-)

SOTA - DM/BW-094 - Kornberg

My second SOTA activation is done. Monika (DL6SCF) and I made a short hiking trip on the Swabian Alps. On top of the Kornberg we made a stop and started the activation ... unfortunately we have to shut down operation due to a rising thunderstorm.

IoT MQTT Infrastructure

Since the beginning of my home automation project I made several tests to choose the right platform and right controller. I've done test with various sensor technologies etc. etc.
Most of the articels can be found in the Arduino category.

One decision was, that my webhost should be the main datastore for all data measured. With this decision, I've started to build a data collection and distribution infrastructure. The complete setup consists of two major components:

The home infrastructure
The internet infrastructure

These components are detailed further down the page.

SOTA - DM/BM-344 - Kleiner Kulm - My first activation is done

During a business trip, I took the chance to activate a mountain in the Bavarian low mountains - Kleiner Kulm.

Frog sounds - How far can you hear a frog croak?

Currently I've done 6 QSOs with the Frog and my dipole antenna.

Frog sounds - The frog has arrived

Yesterday I've build the FROG SOUNDS 40m CW QRP transceiver.

I've ordered it as a kit from eBay Seller for about €10,- inclusive shipping to DL. The kit arrived well packed after about 15 days in my postbox.

ELECRAFT K2 - Fixing VFO ALC issue

I've planned to sell my ELECRAFT K2 so I placed some adds in the various HAM sources and I found a buyer willing give my K2 a new home.

Fortunately I decided to do a quick check on the K2 functions, to be sure, that the buyers receives a full functional K2.

I did the check in the late afternoon on 80m and I was shocked - strong stations can be received every 7kHz. Testing the transmitter shows a totally unstable RF signal.

vna/J ist umgezogen

Alle Informationen bezüglich vna/J sind auf eine neue Webseite umgezogen:

http://vnaj.dl2sba.com

vna/J moved to a new location

All information regardung vna/J is moved to my new site

http://vnaj.dl2sba.com

hamware AT-502/AT-515/AT-615B Interface

I've developed a small interface board for the HAMWARe controller AT-502, AT-515 and AT-651B. This interface boards supports RS232 and CI-V communications and can be directly mounted into the controller chassis.

LF-Converter

I've ordered the LF-converter BX-082 kit from the German HAM Radio magazine FUNKAMATEUR already some months ago and now found the time to build and test it.

SMD Solder Station

It all started with an article in the issue July 2014 of the German amateur radio magazine FUNKAMATEUR. Martin Kumm, DC3MKB published in this issue an interesting article for a smart SMD soldering station based on the well know ARDUINO UNO.

Raspberry Pi Logbook

Logbook

Connecting an Arduino to MOSQUITTO

In this post, I've showed, how to setup Mosquitto on an Windows 8 machine. Now let me describe, howto connect an Arduino via Ethernet to the running Mosquitto MQTT broker.

Getting started with MOSQUITTO

After my first experiments with 2elemtry, I decided to give MOSQUITTO a try. Mosquitto is a small MQTT message broker, which provides basically the same functionality like 2lemetry.

Here the steps, I got Mosquitto up und running on my Windows 8 machine:

CW-Sensor-Keyer

Based on the work of John, M0UKD, I've build a small sensor-keyer. I used a surplus aluminium shelf and two aluminium stand-offs as "paddles".

See the evolution of this project here.

Getting started with 2lemetry

During my researches for my home automation project I also stumbled across the MQTT protocol for sensor-server-communication. A matching arduino library was found quickly here on Nick's blog. An arduino sketch was quickly copied from here and modified. Download my version from here.

hamware AT-515 Firmware

I've created a new firmware for the hamware AT-515 tuner.

Please check a detailled description in this manual (currently German only)

*** The RAW-Mode for the interface is no longer supported ***

Some parts are available at cost price. Please check here.

Neuer DARC Image Film

Ein richtig gut gemachter Film des DARC!

Home

Logbook

See the evolution of this project here.