Coupling a Magnetron to Coaxial Cable

Before we begin I’ll start with the obvious warning: Working around microwave radiation is potentially hazardous and could result in electric shock, burns or death and may cause interference issues with nearby users of WiFi and other services on 2.4 GHz which could potentially be illegal in some jurisdictions. I’m sure I don’t have to […]

Progress Update for Radio Totse and its Return

The mast finally arrived today. Initial tests have been promising, particularly as the mast is a telescopic carbon fibre squid pole and therefore conductive but doesn’t seem to be heating up or otherwise causing any obvious issues so far. Wind resistance seems pretty good as we have been having winds gusting up to 30km/h the […]

Upcoming Articles for 2018

Considering the mention of at least one new article per month during my last update, below is a list of article topics that I will attempt to cover during the next year. Ultimately there will be more than twelve as I already have enough projects going to provide a fair amount of content with topics […]

ADS-B Reception Using RTL-SDR

Ever wondered how sites like get their aircraft tracking data? Chances are someone contributed the ADS-B (Automatic Dependent Surveillance-Broadcast) data they received from said aircraft as it flew over their home. With the RTL-SDR and some free software you too can listen in on these broadcasts that contain location and altitude information which are […]

Receiving NOAA Weather Satellite Images with RTL-SDR

Orbiting Earth are 3 weather satellites operated by NOAA (National Oceanic and Atmospheric Administration). These satellites happen to transmit images back to earth in the VHF band at ~137 MHz which with a cheap TV dongle can be received at home relatively easily. Personally I have never had much luck up until now and with […]

Power line Networking and Radio Interference

Most people here have probably heard of “HomePlug” and similar “Ethernet over AC mains” adapters before or even used them at some stage. I personally use them as an alternative to running network cables to different points around the house to feed WiFi access points which they work well for, especially as I am renting […]

Shortwave without an Up-converter with RTL-SDR and SDR#

No this isn’t the old “Direct sampling mod” that is out there on the web, this is the easier software mod that doesn’t involve pulling your RTL-SDR apart. As per the direct sampling mod, performance is still poor compared to an up converter but with the right antenna it still works pretty well. As you […]

Pirate TV Test Broadcasts

The transmitter and modulator are finally playing nicely together. We will be broadcasting in PAL B format on 203.25 MHz at around 100 watts once I finish things like building a decent antenna and make the TX gear portable which most likely will entail building a mounting rack or something similar. The only real problem […]