Wednesday, April 12, 2023

Back after some QRT time...

After some years of intense professional work the time is now to reengage in amateur radio. I am planning to unpack my HF equipment in the near future and set up. There will some construction of antennas and deploying data mode software again. HF band Data- and SSB-modes are likely the first to start with. My target is to use the QRP HF Rig for all /P outdoor activation.

I have VHF and UHF equipment too, so it might be used in parallel when HF is setup.

I like outdoor activities so I have already signed up for SMFF, IOTA, BOTA and SOTA so I have many options to activate.

References:

73 and have a nice day // SM0MMC - Mikael

Thursday, August 13, 2015

Huvudskär International Light House Weekend ILLW - Huvudskar / Huvudskær

The Huvudskar / Huvudskär / Huvudskær Lighthouse during the International Light House Weekend ILLW - Huvudskär. This is a remote island Stockholm archipellago activity by boat to the most remote parts of the archipellago islands. 

The lighthouse has been registered as SE0034 in ILLW at the position 58°58'N 18°34'E. It has also a flora fauna reference SMFF-0842 Huvudskär

The IOTA island DX radio map reference is EU-084 see also IOTA EU-084.

For spotting, following and reporting radio activity during the Light House Weekend go to the spotter.

HUVUDSKÄRS FYR / Huvudskar Lighthouse

Open: Saturday at 11.00-16.00, if nice weather also 18.00-20.00 and Sunday at 11.00-16.00.
Communication: Boat or taxi boat.
Position: 58°57.781′N 18°34.093′E (by Eniro Sea Chart) or by Google Maps

This page will be updated during the event.

In Swedish:

73 & 44

SM0MMC / Mikael

Summer Flora Fauna radio activity during vacation in southern Sweden

This summer has been very nice. The weather has also been warm and sunny during the last couple of weeks. I have activated several Floara Fauna and Nature Reserve areas in the southern part of Sweden. This has been on Kulla peninsula and Bjärre peninsula in Skåne. I also radio activated a remote island in the archipellago outside Göteborg called Vinga

After a boat trip I made it to Vinga. Nice signals on 40m this evening and I had to run back to the boat to get back. Some minor equipment was wasted die to the quick department.


Saturday, June 27, 2015

Listen Sunday 28th June for SAQ Grimeton VLF long wave transmitter on 17.2 kHz

On Sunday 28th June 09.00 UTC and 12.00 UTC the Unesco world heritage Radio Station Grimeton in Varberg, Sweden - SAQ, will activate the long wave transmitter on 17.2 kHz. This is to celebrate the Alexanderson day.

There are only two regular transmissions each year from this transmitter, so don't miss this occasion.

The transmitter has no vacuum tubes or semi conductors. It's based on the inventor Evert Alexanderson alternator and was used for long distance transatlantic communication to the American continent starting 1924. The communication was made to Radio Central in Long Island, New York, USA. It has also been used for communication to Swedish submarines.  The antenna construction is based on six 127 meter high masts for the vertical antennas. The transmissions are made with morse code generated by the alternator.

The alternator based Alexanderson transmitter became obsolete in 1996 and went out of service. This was due to a more modern vacuum tube transmitter with the call sign SAC. However, because the Alexanderson transmitter was still in good condition it was declared a national monument and also later a Unesco World Heritage site.

How to listen... Since most radios does not cover the low frequency of 17.2 kHz, you can take an alternative route, using a computer with a regular PC sound card to receive VLF. This is called a SDR (Software Defined Radio). Anyone can do this and it is very straight forward.

To receive this low frequency you only need to connect an active antenna or some aerial wire to the sound card (mic-input) of your PC and to install SAQrx, a software defined VLF receiver by SM6LKM for the VLF band. SAQrx is based on a sound card control software by Johan Bodin, SM6LKM, running under Microsoft Windows. It requires a sound card capable of full duplex at 44 kHz sampling rate (can be used by most of the on board PC sound cards).


The Microphone input is connected to an aerial wire. In my case I connected it to my long wire antenna, but any wire should work fine. If you try this already today, there are several navy stations between 18 kHz and 22 kHz transmitting MFSK signal (and CW). 
The picture show the SAQrx tuned for 18.2 kHz to the Indian Naval Station VTX.



More information:

Nature Reserve Täby Käringsjön-Mörtsjön SMFF-5819

The Nature Reserve Käringsjön-Mörtsjön in Skarpäng, Täby north of Stockholm was visited a very nice Sunday afternoon. The radio activity was from an open area in the woods. My antenna was a long wire to a pine tree and 5W SSB on 40m. It was the first time for me in this area. 





SMFF-5819 Käringsjön-Mörtsjön 
 The area is very nice and the walking path Roslagsleden passes the Natura 2000 area. Many fisher men was visiting the lake with equipment many times my backpack. Mörtsjön is very rich on fish and Mirror Carp (sv. spegelkarp) and wild carp (Cyprinus carpio). You can catch carp of 15kg and the record is 20kg. Tench (sv. Sutare) is also present with 3kg fishes. This is one of the Stockholm area best carp lakes. All is catch and release. 





 Thanks 73 & 44 Information in Swedish: https://smff.sk6ei.se/

Tuesday, June 9, 2015

Where not to fly - Drone chart from aviation authorities in Sweden

There are certain areas that are control areas for aviation according to Air Traffic Services - LFV. If you have a drone and want to fly, you need to respect these areas. This is a map defining where not to fly a drone / Quadcopter according to the Swedish Aviation Authorities LFV:


This is related to Swedish Aeronautical Information Service (AIS) and Flight Planning Centre (FPC. Each year there are more than 700,000 flights in Swedish airspace, drones uncounted.

Thursday, June 4, 2015

Björnö Naturreservat / Nature Reserve SMFF-1037 Flora Fauna


Björnö Nature Reserve at Ingarö 30 km east of Stockholm, is a very nice recreation area by the sea. This area is part of the Stockholm Archipelago and can be reached by car or bus via a bridge. It was raining and very windy, but I had a good shelter. 

Björnö has very good walking paths and near coast tracks. There is a very nice sand beach just a 10 min walk from the parking. If you go a bit further you have a tower to climb for a nice view. Potentially it can be used as one leg for your antenna.


I also visited the inland area Långviksträsk Nature Reserve SMFF-1054 and SMFF-6128 for some radio contacts in the Flora Fauna radio sports activity.  This area is an inland water area with very nice nature.

Using 7 Watt today to the long wire. The radio conditions was good and I had many nice contacts.













Information in Swedish: https://smff.sk6ei.se/