Archive for the 'geiger' Tag

X-rays with a DY86

The DY86 (DY87, DY802) vacuum rectifier was used in most European black and white tube television sets. In hot-cathode mode, it was capable of rectifying up to 18 kilovolts at 0.5 mA. In cold-cathode mode, however, it withstands 40 kilovolts DC inverse for a short time, while providing some soft X-ray radiation enough to set classic Geiger counters off.… [read more]

X-rays with a dental Chirana

After receiving a donation of two nice X-ray intensifying screens from Mr. Máca, a Czech radiologist (many thanks!) in 2011, it wasn’t long before I got a hand on a real X-ray tube, obtained through barter trade, with some luck, too. Only then were my previous failed X-ray attempts with DY86‘s and 6VS-1‘s marked with success, at least!… [read more]

X-rays with a Beryllium-window tube

While lurking on eBay on a nice spring day of 2012,  I have been lucky to obtain a real gem, for a very cheap price indeed: a special micro-focus X-ray tube, with a Be window on the beam port, mostly for spectral analysis or fluoroscopic scanning purposes, for up to 150 kilovolts with forced oil cooling at high powers; made by a now-defunct American EG&G Astrophysics company… [read more]

X-rays with a 6VS-1 (6ВС-1)

In 2010, me having already exploited the DY86, a Czech experimenter nicknamed “DANYK” came up with an oddball Soviet vacuum stabilisator tetrode “6VS-1”, which produced copious amounts of X-rays in hot-cathode mode. He got pretty good radiographs, nevertheless. So, I have got an inspiration and obtained a few:… [read more]

Semiconductor free Geiger Counter

Tried searching the keyword “geiger counter” on Google, or even better, on YouTube? Now, how many of them contained a multitude of transistors, analog microchips or even digital microprocessors, and no shielding at all? Well, whatever the count is, a majority of them – if not all – are going to fail miserably, due to a huge electromagnetic pulse, when the… [read more]

RBGT-62 Geiger counter (radiac)


RBGT-62
Description: Czechoslovak military Geiger counter.
Manufacturer: ČSLA
Made in year(s): early 1960s
Country of origin: Czechoslovakia
Status: Working, last calibration April 2004… [read more]

IT-65 Geiger counter (radiac meter)



Description: Czechoslovak army Geiger counter.
Manufacturer: Rudi Čajavec and TESLA
Made in year(s): late 60s-mid 80s; 1969 is mine model
Country of origin: Yugoslavia & Czechoslovakia
Status: Working, last calibration Feb 2006… [read more]

IBG 58 T Radiation indicator



Description: Czechoslovak army radiation indicator.
Manufacturer: TESLA or Czechoslovak army
Made in year(s): late 50s-early 60s; 1962 was my model
Country of origin: Czechoslovakia
Status: Not available… [read more]

Fluoroscopy of a hand

This might be the craziest documented experiment/project on my page – a fluoroscopic radiograph of my hand, utilizing my beryllium-windowed vacuum tube setup. For the sake of your own safety and the safety of others, do not attempt to recreate without proper knowledge and protection, as hazards include radiation sickness, increased risk of cancer or amputation of irradiated… [read more]

DP-5B (ДП-5Б) Geiger counter (radiac)



Description: Soviet army Geiger counter.
Manufacturer: Unknown
Made in year(s): mid 60s-early 80s
Country of origin: U.S.S.R.
Status: Working, last calibration March 1990… [read more]

3D X-ray setup

A real-time, fluoroscopic X-ray setup of my previous attempts with the beryllium-window tube. However, radiographed objects are now placed on a slow moving turntable motor, thus creating a spectacular 3D effect, captured on camera.… [read more]