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 […]

Using a 1:1 Isolation Transformer to Step Voltage Up or Down

(DANGER: Risk of serious injury or death, do not attempt unless you know what you are doing) With a 1:1 Isolating Transformer, the voltage on the primary winding is equal to that on the secondary winding. This is particularly useful for safety where an appliance may be used in a wet area or another hazardous […]

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 shit but with the right antenna it still works pretty well. As you all know these sticks don’t […]

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 […]

SDR# + DVB TV Tuner as Test Equipment

The RTL-SDR project started out as a cheap alternative to the many professional Software Defined Radios (SDR’s) on the market today. They even can be used as a poor mans radio scanner and they work pretty well for that use. With the myriad of software available for them, the possibilities are truly endless for the […]

Pirate TV Update (TV Totse)

Well the VSB modulator has been ordered finally. After nearly a year of collecting dust, its time to dust off the power amplifier unit and start building the antenna. Currently I am thinking that the power amplifier can do up to 100 watts output but haven’t confirmed it yet. Radio Totse is still on hiatus […]