Up for buy it now is a western electric 300B vacuum tube (1976 date) The tube tested strong at 79% ip and 86% gm on an Amplitrex AT1000 tube tester (as photographed).
Item Tag: Vacuum Tube
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Scott Custom 2 Channel Tube Stereo Amplifier Vintage 12AX7 6BM8 Vacuum Tubes
Scott Custom 2 Channel Tube Stereo Amplifier Vintage 12AX7 6BM8 Vacuum Tubes. Has scratches, marks and will need some repair work as it’s audio sounds scratchy, garbled and noisy. Powers on but audio is scratchy/garbled/noisy. Maybe you can fix it? Cosmetically in nice shape as pictured. This is sold for repair only. Pictures are part of the description. Sold as is as pictured with no returns. See my other listings!
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GE 12AU7WA 6189 Vacuum Tube TESTED 80/80 Military Grade Fender McIntosh Ampeg
Tube Type: 12AU7WA / 6189 (High-Reliability Military Version). Emissions Score: 80 / 80 (Sencore TC-109 Scale). IF THIS TUBE SAYS TESTED IN THE TITLE Condition: Excellent physical condition; tube graphics are intact.
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Soviet MI-514M Magnetron (МИ-514М) – 15 GHz, 75–175 kW – From ZSU-23-4 Shilka Rd
For sale is one (1)used Soviet magnetron MI-514M (МИ-514М / MI514), originally installed in the radar system of theZSU-23-4 “Shilka”. Removed from adecommissioned Shilka radar system. This is ahigh-power pulsed microwave magnetron designed for operation in the ~15 GHz range.
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JAN CBYS 4C28 TRANMITTING TRIODE VHF RADAR VACUUM TUBE VERY RARE
Micropup pulse rated power triode. 8KV max anode voltage, 2A peak anode current; gain 22; 150W anode dissipation with forced air cooling.Intended for application in the VHF range in ground and airborne transmitters of the SHORAN precision navigation system developed by RCA itself, including the AN/APN-3 airborne interrogator/responsor and two ground beacons AN/CPN-2.Registered by RCA in December 1943, it was similar to 8026/4C27 without the radiator guard ring. Withdrawn by RCA in December 1945, it was later manufactured by Central Sales and Mfg. Corp., Denville, NJ, USA. Money back guarantee within 14 days if returned by customer.1)Welcome to the store and purchase, if you have any question, please contact us first. We will reply you within 24 hours.(except weekends and holidays).2)Our normal business hour is Monday through Friday 9 AM to 6 PM Colombian Time. All emails and orders will NOT be processed during weekends and holidays, orders will be dispatched only on Wednesdays.3)We highly appreciate that you can contact us before you leave Negative feedback or Neutral feedback. We will offer help to solve your problems as fast as possible. If you have any issues with an item upon receiving it, please don’t hesitate to contact us. We are here to help!If get here it means that you read the entire description and saw all the photos, have a nice day and thank you for shopping with us
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12BA6 HF93 ITT Pentode Vacuum Tube Tested
Each tube has been tested to confirm ideal emission. Pictures show tubes under test, their condition, and an emission test result sample. Tests conducted on each tube to confirm the following Very Low Leakage.
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TESTED. HF Double triode 6N5P ~ ECC802S – ECC82, 12AU7WA 3 X MIKA 1965 PCS 1.
TESTED. HF Double triode 6N5P. Approximate analogue ECC802S – ECC82, 12AU7WA. 3 X MIKA 1965 PCS 1. Old stock.TEST: Uh-6,3V, Ua=200V Ug2=200V Rk=2X600 Ohm Ia1=10,4mA, Ia2=10mA, S1=4,3mA/V, S2=4,4mA/V Double triode 6N5P is designed to amplify high frequency voltage. 1 anode 12 grid 13 cathode 14 filament5 filament6 anode 27 grid 28 cathode 29 screen Parameters 6N5P:(each triode)Film voltage 6.3VAnode voltage 200VResistance in the cathode circuit for automatic bias 600 ohmsFilm current 600±50mAAnode current 9.75±1.75mAAnode current of the second triode in diode mode >2.5mAAnode current at the beginning of the characteristic (Uc=-8V) 3.1mA/VGain 27(+3/-9)Leakage current cathode-heater <20 μAVibration noise voltage (Ra=2kOhm) <50 mVReverse grid current of the first triode <1 μALeakage current cathode-heater <15 μAInput capacitance 3.0+0.8 pFOutput capacitance of the first triode 1.5+0.5 pFOutput capacitance of the second triode 1.7+0.4 pFPass capacitance 2.25+0.35 pFCapacitance between anodes <0.2 pFCapacitance cathode-heater <4.0 pFReadiness time 25 s Condition. Please look carefully at all the photos, as they are part of the description! You buy exactly what you see in the photos. Shipping policy Airmail shipping with tracking number. Delivery takes 9-28 business days as usual. Feedback Please leave feedback for me after your parcel arrives. This lets me know that you received your item. Problems If there are any problems with the delivery time or product, please contact me before leaving a neutral or negative feedback. I will do my best to solve your problem. I will answer all questions, write to me. Please visit my other auctions!