Hi all tube lovers and collectors:
This special thread is for you post your tube photos and talk about them.
Have just found this bargain for your tube library:
Used GK71 Pentode just $5usd each at GSTubes.com managed by Andreiy and his wife, the tubes were used in the Russian military forces.
The GK71 are GM70 syster and similar to 813 tube.
The new NOS GK-71 tubes are 15.90 USD.http://www.gstube.com/catalog/?key=gk71&submit=Find