Author: ms

Wireless Communication in Polish Home Army 1939-1945

August 1 is another anniversary of the outbreak of the Warsaw Uprising in 1944, so important to all Poles. This is an excellent opportunity to present the heroic struggle of the soldiers of the Uprising in terms of military radio technology. Thanks to my colleagues SP3LD and SP3CSD, I learned about Louis Meulstee’s publications on […]

My radio shack

Radio shack – this term does not need to be translated into another language. Every ham knows what this means because he has his own … Whatever it is, it is everyone’s pride. During contacts, we often wonder – what does our correspondent’s workplace look like? Below we present an open gallery of “radio shacks” […]

QCX transceiver QRP in SSB version

In the post “QCX transceiver QRP CW ” Piotr SQ5JUP described his experience with the QRP Labs mini-transceiver. Below is how to build a QSX SSB from the new QCX+ kit. The contents of the QCX+ kit from QRP-Labs http://shop.qrp-labs.com/kits/qcxp is shown below.               The boards were assembled step […]

Transceiver uSDX with Arduino Nano

Personally, I think that a “real” SDR radio is one where the radio signal is received by the antenna and then (possibly after passing through passive filtering circuits) is sampled by an analog-to-digital converter. Further processing of the signal takes place in the digital domain. However, the SDR category also includes other devices which to […]

Software Defined Radio with Arduino Nano

Arduino is a favorite toy for electronics enthusiasts. There are thousands of designs around these modules. Here’s the next one – the simplest and cheapest SDR receiver in the world! A “real” SDR radio is one where the RF signal received by the antenna is directly sampled by an analog-to-digital converter. Further processing of the […]

ADALM-PLUTO clocker

In the post “ADALM-PLUTO development kit for (not only) Es’hail-2 satellite”, the topic of the 40 MHz clock generator for Adalm-Pluto and 25 MHz for the LNB satellite converter was considered. The problem of the 40 MHz clock generator is somewhat solved by replacing the original micro-module of the generator with a more stable one, […]

Monitor for SG-Lab Power Amplifier

The 2.4 GHz 20W power amplifier from the Bulgarian company SG-Lab is widely used among the OMs (including QO-100 sattelite fans) [1]. In addition to the attractive price, this is also due to the excellent workmanship and delivery in the milled aluminum housing. The PA contains three internal directional couplers for measuring input, output and […]

N7DDC autotuner with power over coaxial cable

I made N7DDC popular ATU-100 antenna tuner in the basic version (5×5) in 2019, and I added my experience with it on our website in the post  CHA-250B antenna by SP5GNI. The original documentation of the ATU-100 tuner can be found on the Github portal as well as elsewhere (example). The schematic diagram can be […]

SO4M contesting

For many years I have the pleasure to work with Mirek SP4MPG and compete in his contest station located near Olsztyn. I met Mirek thanks to the SN0HQ Team and joint, annual starts in the IARU HF competition. This year, on the last weekend of May, I decided to start in the CW part of […]

HF5WIM in 2020 SPDX Contest

Congratulations to all my colleagues for great achievements in SPDX 2020! Particularly touching is the photo of Kamil SQ5JRN (I also heard him) with a baby on his lap 🙂 My story: Saturday, getting closer to the contest. I walk around the garden and look at my wires and 2 element beam. I wonder in […]