KerberosSDR – 4x Coherent RTL-SDR
Zoltan built this from ground up while at Outernet and finished as a contractor. A 4x coherent RTL-SDR. For direction finding, passive radar, beam forming. The breakthrough application is that combined in a single “kit” no sophistical engineering needed.
Dreamcatcher board for satellite broadcast internet reception
Our colleague Zoltan designed from scratch while with Outernet team in the past.
Solar + battery micro grid solution
Complete redesign of a battery charger and power module PCB with solar panel input. The design has 300 components on a PCB with only 2 layers, handling 10+ Amps.
moRFeus standalone RF mixer and signal generator
Our colleauge Zoltan was design this while with Outernet team. moRFeus is a field-configurable wideband frequency converter and signal generator.
0603 inductor RFID antenna
probably worlds most miniature and cheapest RFID antenna
NFC boot loader design
RF HW design considering antenna simulation and tuning, FW design for the boot loader features.
RF HW consulting
Transform of a low cost commercial product into high fidelity RF device via clever RF architecture redesign on board.
Raspberry Pi Standalone Speaker Amplifier HAT
Using Raspberries on board PWM audio generator feature adding our some filters and audio amplifier plus the speaker: creating a stand alone active speaker HAT for Raspberry Pi community.
QRPi the radio front end module for Raspberry Pi
A Band Pass Filter + amplifier stage for SDR transmission experiments.
Bluetooth, Zigbee, Wifi antenna simulation and design
From idea till mass production
proxmark3 cad / cam contribution
We helped to ease the manufacturability of the famous proxmark3 tool pcbs
Remote radio head on drone for spectrum monitoring
Our R&D task focused on creating an “improvised relay” for radio communication use cases or 3D radio spectrum mapping
ISM SoC Radios, RFID, Antenna design, EMC trobuleshooting
System Level Design, 8bit MCU, EFM32, ARM, FPGA, Sensors
Creating custom Android and iOS app for our HW
Cost effective Software Defined Receiver and Transmitter solutions
European and US mid size to global multinational companies. Startups.
OUR Engineering Pool
Latest New - IoT Blog
As indicated by ham users the schematic is low quality in the PDF article released by TAPR. Here sharing a better quality picture, hopefully that helps.
Making a standalone WSPR receiver using Raspberry Pi and RTL-SDR V3 dongle with rtlsdr-wsprd software
Here is list of commands how to install and configure a standalone wspr receiver on Raspberry Pi using an RTL-SDR V3 dongle for wspr reception and reporting. Running this since a year on the roof with great success! Can be run in RPi 1-2-3 even zero.
You will find more details for decoding in this article: This is an educational purpose audio stream. You can use this audio stream to experiment with narrow band satellite reception without physical ground station (SDR, LNA and antenna hardware) having fun and learning SDR technologies without experience (and investment) in RF Hardware. Simply open in Read more about INMARSAT STD-C EGC live streaming[…]
Hi, As may many of you seen on RTL-SDR blog the RPITX V2 is out there We made several measurements booth on 434 MHz and 144 MHz and looks like the first still has difficulties while the second (144 MHz) is exceptionally clean, even with PA (1W) and almost no filtering. 434 MHz strange spuriouses Read more about RPITX V2 measurement plots[…]
An excellent and clever solution using a SoC ISM radio as 2m APRS transceiver: FeatherHAB: 2-gram High Altitude Balloon Tracker
The V3 version RTL-SDR blog dongle is perfectly fits for WSPR reception as per my tests. As it has internal switches it uses only one SMA connector for HF (500kHz to 24 MHz) and UHF operation, no need for changing connectors for direct sampling mode. This makes the RTL-SDR V3 dongle really convenient and easy Read more about Receiving WSPR With An RTL-SDR V3 Dongle[…]
Didn’t find an elegant compact solutions out there. I’m using only the GPIO pins, no need to route the audio jack output back to the PCB like existing solutions. Also using an on board amplifier which supplied from RPi 5V. Built a few prototypes yet and working nice 🙂 Enjoy! https://github.com/rfsparkling/RPi_Speaker https://www.reddit.com/r/RASPBERRY_PI_PROJECTS/comments/55hk5k/rpi_speaker_an_open_source_fully_integrated/
Remote Spectrum Monitoring Drone from RTL-SDR, RPi, 4G internet using OpenWebRX Can be used as an improvised “virtual antenna tower” for example in emergency situations, ham radio activities or experimenting. Possibly words cheapest aerial spectrum monitoring tool as of today. You can see APRS and ham radio FM repeaters in the spectrum plot of the Read more about Remote Spectrum Monitoring Drone from RTL-SDR, RPi, 4G internet using OpenWebRX[…]