Now I have an xray machine to play with at work, I can take photographs of the insides of things. I shall make full use of this. Here’s an old transistor to start with.
Image details : Mullard OC44 PNP Germanium transistor, glass envelope. 90kV polychromatic xrays, filtered with 1.5mm Al and 0.2 mm Cu. CsI scintillator, 6 sec exposure.
I needed a GPS antenna for a frequency standard I bought. So I built one.
Spotted in the adverts in this months Radcom.
It worked!
Clockwise and anti-clockwise beams though the ring with minimal tweeking of the focus and steering parameters. Yay!
A few days ago I built a radio receiver out of junk, because my usual radio had died a death and I wanted to listen to a specific part of the shortwave bands around 3.5 - 4 MHz.
Last night I scanned up and down the band and located what sounded like a fax transmission, a short while later and I’d recorded several minutes of the signal. A litter later still and I’d decoded it using some software I wrote nearly 10 years ago.
It looks a little messy, but it is quite obviously a weather map showing iso-bars and weather fronts over the Atlantic, the UK and Europe. Not bad for random DIY experiments.