1x Tested Sbm-20-1 ???-20-1 Geiger Muller Gm Counter Soeks Tube Sts-5 Sbm-20-01

US $500

Sofia, Bulgaria
Jan 30th

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SBM-20-1 (01) / ???-20-1 (01) Have you ever wanted to have the TOP notch quality of a regular SBM-20 into even smaller package with the ease of the soldering? Well, stop searching! We are now offering SBM-20-1, which is the same SBM-20, but with ~25% reduced lenght. Having high sensitivity and stability into the smallest possible package in todays modern dosimeter world is of CRITICAL importance. HARD BETA and GAMMA GM DETECTOR TUBES Vintage Made in USSR during the 80's for the Soviet Military Needs Genuine Russian Military Surplus <> TESTED with real radiation sample <> Condition - NOS, Never Used, Comes straight from the Factory Box and double tested! This auction is for 1 (one) piece per bid! BODY SIZE (wihout the leads): 74mm lenght @ 10mm diameter GENERAL SPECIFICATIONS Parameters SBM-20-1 Gas Filling Ne + Br2 + Ar Cathode Material Stainless Steel, 50 mkm Maximum Length (mm) 108 / 101 Effective Length (mm) 91.0 / 83.5 Maximum Diameter (mm) 11 Effective Diameter (mm) 10 Connector Pin Operating Temperature Range 0C -60 to +70 WALL SPECIFICATIONS Parameters SBM-20 / SBM-20U Areal Density (mg/cm2) 40 Thickness (mm) 0.05 ELECTRICAL SPECIFICATIONS Parameters SBM-20 / SBM-20U Minimum Anode Resistor (meg ohm) 1.0 Recommended Anode Resistor (meg ohm) circuit diagram 5.1 Recommended Operating Voltage (volts) 400 Operating Voltage Range (volts) 350 - 475 Initial voltage (volts) 260 - 320 Plateau length (volts) at least 100 Maximum Plateau Slope (%/100 volts) 10 Minimum Dead Time (at U=400V, micro sec) 190 Working range (mkR/s) 0.004 - 40 Working range (mR/h) 0.014 - 144 Gamma Sensitivity Ra226 (cps/mR/hr) 29 Gamma Sensitivity Co60 (cps/mR/hr) 22 Inherent counter background (cps) 1 Tube Capacitance (pf) 4.2 Life (pulses) at least 2*1010 SHIPPING The item(s) will be shipped by registered regular mail unless other arrangement has been set with the buyer. Due to severe delays for the Regular mail sent to USA and Canada, we recommend upgrade to Priority for all US and Canada clients, please contact us for details! Overseas delivery typically takes 1 to 3 weeks and about a week for Europe. NOTE: If you purchase several items I will combine the shipment to reduce shipment costs. PAYMENT 1. PayPal - www.paypal.com

Condition	New other (see details) : A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with defects. See the seller’s listing for full details and description of any imperfections.
Seller Notes	“NOS, Comes Straight from the State Military Surplus”