by Matt (W6CSN) Bletchley Park Most readers of this blog are probably familiar with Bletchley Park and the significance of this place in breaking the codes used by the axis military forces during the second world war. The electromechanical systems developed and used here to aid the codebreakers in their daily work led directly to the electronic digital computers … Continue reading UK POTA Rain and Shine →

In diesem Beitrag beschreibt Matt. DL1BJL, wie ihr unter Linux mit eurem Kenwood TH-D74 oder TH-D75 digitale Betriebsarten wie FT8 und FT4 auf Kurzwelle empfangen könnt. Um als UKW-Handfunkbenutzer ohne Kurzwellengerät auch mal digitale Betriebsarten auf Kurzwelle ausprobieren zu können, kann man tatsächlich auch die Handfunke benutzen, wenn die das denn unterstützt. Die Geräte von … FT8 und FT4 unter Linux mit dem KENWOOD TH-D74/75 weiterlesen

Es ist fast schon wie eine jährliche Pilgerreise – der Trip nach Xenia im US-Bundesstaat Ohio, unweit der Stadt Dayton. Zusammen mit der Tokyo Ham Fair und der Hamradio in Friedrichshafen gehört die Messe zu den „top 3“ der Amateurfunkveranstaltungen weltweit. Dieses Jahr fand auf dem Gelände zudem zeitgleich die ARRL National Convention statt. Von … “Hallo, ich bin die Milli Amp und strippe, um über die Runden zu kommen!” – Bericht von der Hamvention 2024. weiterlesen

Many thanks to Matt (W6CSN) who shares the following post from his blog at W6CSN.blog: The Adventure you get is not always the adventure you expect. Recently I’ve been plotting a unique activation of the De Anza National Historic Trail, but that particular POTA activation is going to need a good antenna and just as … Continue reading The Adventure You Get →

by Matt (W6CSN) Recently, OM Witherspoon (K4SWL) wrote a blog here and shared a POTA activation video in which he described the benefit of changing up your operating location within a large park to keep things fresh or simply to be able to activate within a given schedule. That got me to thinking about my … Continue reading Change Is Good →

Mittlerweile hat es sich schon herumgesprochen und war schon auf diversen Kanälen zu lesen, aber leider müssen wir Euch mitteilen, dass Dr. Bob Heil, K9EID am 28. Februar 2024 verstorben ist. Er wurde 83 Jahre alt. Vielen ist Bob durch seine Karriere im Bereich Tontechnik bekannt. Er arbeitete mit den großen Namen im Showgeschäft zusammen, … Dr. Bob Heil – K9EID – silent key weiterlesen

Every year I try and listen to the BBC Antarctic Midwinter Broadcast. It’s become a bit of a tradition to sit back with a whisky on the rocks and enjoy this unique program that is broadcast by the BBC World Service. The broadcast was made on 3 frequencies; 7305 kHz from Ascension, 9505 kHz from …

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We’ve recently moved to the new BT FTTP service and enjoy a nice, stable 500Mbps download speed. We’re equipped with a Ubiquity UniFi system in the house which uses a USG (Ubiquity Security Gateway) as out main firewall/router. We connect the Openreach ONT (the white box that Openreach install where the fibre terminates and provides …

Continue reading "BT FTTP + Ubiquity USG +IPv6"

I’ve decided to move my store from this website over to it’s own dedicated site. The ecommerce software is much better and very fast. I’ve always sold my products under the “LMK Technical Services” brand which is my sole trading name and moving them to a dedicated site makes this much more transparent. The new …

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I’m designing a simple weatherproof case for the VHF Design range of QRO LNA devices. More details to come but here’s a taster. This was a rough, fast test print to check for fit. The design is available on thangs.com (https://thangs.com/mythangs/file/30489) for free so anyone with access to a 3D printer can make one. I …

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I’ve had a 3D printer for some time now and I’ve been experimenting with various settings, filaments and prints. I’ve got to a point where I’m happy with the results and am pleased to announce a new product line of 3D printed items for the Amateur Radio and Shortwave Listener hobby. The first of my …

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In 2019 I organised a trip to a remote farm in Devon for a mini DX-pedition, a sort of radio holiday for a few good friends and club members to play radio non stop for 5 days with 10 acres of field to erect antennas and a non existent HF noise floor. We took three …

Continue reading "IC-7300 In Multi Radio Environment?"

The PWRpath is an interesting and handy device that allows a load (in this case, my station equipment) to be powered from a mains PSU while simultaneously charging a backup battery. In the event of a mains power failure, the load will automatically switch over to battery power with no interruption of the power supply. …

Continue reading "Chunzehui F-1006 Low Loss PWRpath"

I’m a big fan of PowerPole connectors and have been watching the Chunzehui F-1005 on Amazon for some time. It was a bit more that I was willing to spend at it’s regular £59 price point but it want direct to my basket when it recently went on special offer for £29.50. It’s well made …

Continue reading "Chunzehui F-1005 9 Port Power Splitter Teardown"

Don’t want to build your own? I now sell these and an alternative design with a better, fixed external unit on my shop! The Icom IC-9700 has a GPS data input available but no oficial accessory from Icom. It’s a 2.5mm TRS connection that allows users to connect a GPS unit with an RS232 output …

Continue reading "GPS Data for Icom IC-9700"

You’ve probably seen the MLA-30 Active Loop Antenna on Ebay. It can be had for a bargain price of around £35 and works great for the price. There’s only one problem in my book; the PCB is covered in epoxy potting and you can’t see the design or repair/modify it! Something that I’ll have to …

Continue reading "Inside the MLA-30 Active Loop Antenna"