Archive | Radio Notes

Airspy – Spy Server – Useful scripts

I’ve had Spy Server working very successfully with the Pi 3 for a while now and have written a few time-saving scripts that others might find useful. These can be found in the zip file below. Here’s a quick run through their function:, and – These scripts automatically change the Spy Server […]

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Running SpyServer on a Raspberry Pi-3

NB: UPDATED 5th August 2017 – The following issues are fixed: Wi-Fi was unavailable after upgrading to Stretch. Reduced bandwidth option stuttering – fixed by a new version of Spy Server released 14/6/17 Changed the auto-run option to use /etc/rc.local and added an IP check and 30 second timeout. Installing SpyServer on a Raspberry Pi 3 […]

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Arduino Code for 0-500MHz, 1nW to 100W RF Power Meter

Here is the code for the Arduino in-line power meter that will feature in my Data Modes column in the August PW. Copy and paste the code below into your Arduino IDE: ————————————————————————————————————————– /* This sketch uses the Adafruit i2c/SPI LCD backpack and shares some code from Adafruit ( ) Sketch produced by Mike […]

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Raspberry Pi – Auto-Start rtl-sdr Server

  Raspberry Pi Tips Auto-Starting rtl_tcp during boot To avoid having to use ssh to access the Pi and start the rtl_tcp stream, we can hook into the rc.local script to automatically start the server if an IP address is available and the dongle is connected. The rc.local service is used to run commands at boot […]

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RTL-SDR Segmentation Error Solved

Solving the rtl-sdr Segmentation Error on Raspbian (16-2-2015) The problem appears to be caused by the 11.1 version of libusb-1.0 that is used for the current Raspbian build. Upgrading to the latest version, 19.1, solves the problem. The following procedure upgrades libusb-1.0 to the 19.1 release. 1 – First step is to add the Raspbian […]

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Airspy – New Generation SDR Receiver

I’ve just completed reviewing the new Airspy SDR receiver and can tell you that it’s a very good little receiver that I’m sure will prove very popular. You can see full details in the next Radio User magazine. Coverage is 24MHz to 1800MHz with no gaps and a 10MHz tuning bandwidth. The Airspy also uses a […]

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