Vacuum Tubes Specials

Product Details:
Marconi-Osram Valve Co. of England DET-25 triode. Antique electronic valve. High quality. Manufactured for RAF radio transmitters. Air-cooled transmitting triode. 7.5v cathode, 4 pin base, 165mm length. Alt. P/N: AT35, CV1025, CV1567, VT25, CT52GPO. Circa 1925 - 1945.

Product Details:
Antique Eimac high vacuum rectifier tube. Peak inverse plate voltage, 30,000 max volts. Plate dissipation, 450 max watts. D-C plate current, 1 max amp. Peak plate current, 8 max amp. 4 pin metal shell base. Great display piece. Sold as collectors piece only! Originally used in military radar sets. This piece dates back to 1970. Some oxidation of pins and caps, otherwise New in the box!

Product Details:
3CX1500A7/8877 Kit. Includes 8877 chimney & socket. Tube looks new! Old stock, guaranteed. Two in stock.

Product Details:
General Electric 6146B / 8298A premium tubes. Recommended for any transmitter using 6146Bs including Collins, Kenwood, Yaesu, etc. New in original in factory cartons. Last chance to stock up on these rare beauties. Date codes 1981-1985.

Product Details:
Our most popular tubes. Heavy duty "W" model made for use in military equipment where rugged environment survival was essential. Premium Tubes, includes individual Roe Tester printout with curves with each tube Guaranteed satisfaction. Manufactured by General Electric in the good old USA. In most cases, our 6146W will directly replace 6146, 6146A and 6146B. Made for use in Collins and other U.S. manufactured equipment. Date code: 1987.

Product Details:
Matched pair. Pairs are matched from Roe Tester results. Now includes individual Roe Tester printout with curves with each tube. All premium tubes. Guaranteed satisfaction. Original Equipment Manufacturer's choice for Collins KWM-1, KWM-2 and 32S transmitters.

Product Details:
Power vacuum tube. 3"D x 7-1/2"L. Used, guaranteed.

Product Details:
High voltage rectifiers. Random. 1v to 3v mostly octal base (some compactron) in various brands. Use for artwork or target practice.

Product Details:
RCA Radiotron 204A/503A. 4" x 14 1/2"L.

Product Details:
Surplus Sales of Nebraska has 25,000 pcs of this valuable little peanut tube on hand. According to online dialogue on these small thyratrons, they were initially developed for controlling incandescent lamps, electromechanical relays or solenoids, for bidirectional counters, to perform various functions in Dekatron calculators, for voltage threshold detectors in RC timers, etc.Another use of the thyratron was in relaxation oscillators. Since the plate turn-on voltage is much higher than the turn-off voltage, the tube exhibits hysteresis and, with a capacitor across it, it can function as a sawtooth oscillator. The voltage on the grid controls the breakdown voltage and thus the period of oscillation. Thyratron relaxation oscillators were used in power inverters and oscilloscope sweep circuits.One miniature thyratron, the triode 6D4, found an additional use as a potent noise source. When operated as a diode (grid tied to cathode) in a transverse magnetic field.potent noise source. Sufficiently filtered for "flatness" (white noise) in a band of interest, such noise was used for testing radio receivers.Most interesting to us was the early experimentation operating like a vacuum tube triode, below it's ignition voltage, allowing it to amplify analog signals as a self quenching super regen detector in radio receivers in the 1950's.We welcome development on this little pencil tube. Please send us any legitimate circuits and we will post on our website.

Product Details:
6350 tube, various brands. Industrial 12AU7, Includes ROE test results, (see ). 3,000 pcs available!!

Product Details:
Eimac 8660 / 4CX1500B Transmitting Tube, Date codes in the 1980's. New Old Stock.

Product Details:
Admiral 1L6 tube. Just discovered a stock of fresh N.O.S. 1L6 tubes used in the famous Zenith trans-oceanic radio from 1951 to 1962. Also used in the legendary RS-1 clandestine radio set used by the CIA in the 1950s & 1960s. Made in the USA by Sylvania.

Product Details:
RCA new, old stock tubes in original World Radiotron boxes. I have only about 50 left. 1624 / A4154D. Wonderful tube. Nice sounding.

Product Details:

Never before at this price, 811A/JAN Cetron. Buy these late date Cetron tubes made to the original RCA specifications because Cetron (US company!) bought RCA. Anyway, they are made to run horizontal or vertically. YES, you are correct!

This is the exact tube Collins installed in the thousands of 30L-1s they produced for 30 years! Enjoy higher duty cycle and will last many times longer than imported tubes. We are almost sold out of our prized 811A...forever!

Product Details:
Gold plated transmitting tube made by ITT available at a fraction of original cost. Many amateur amplifier designs around this beauty. 70 cm, 2 or 6 meters. It goes anywhere, works like a horse and is driven by very low level exciter. Socket is very rare. All element connections on socket are isolated; no internal grounds.

Product Details:
Extra 7213 Tubes Available

Product Details:
Matched trio (3 tubes). Otherwise, same as above.

Product Details:
New in the Box!! Transmitting tube, fits Collins: 32V-1, 32V-2, 32V-3. 1977 date codes.

Product Details:
General Electric 5749W electron tube. DC: 1987. 28,000+ available!! NSN: 5960-00-134-6004.

Product Details:
Premo 12BY7A-JAN for your 70-80's vintage ham equipment.

Product Details:
Attention Collins owners. This is the single best favor you can do your 32S-1 / S-3 or KWM-2 transmitter. Its cheap and effective. Replace the DRIVER tube!!!! Of 6CL6's that are available on the market, this is the best there is.

Product Details:
4CX350FJ/8904JAN. Great in HF or VHF amplifiers. Replaces 4CX350F/8322 in most applications. 26.5 volt @ 650 ma heater. Same socket and chimney as 4CX250B, etc. (use our SK2A or any SK600 series). Typical operation 2200 volts @ 230 ma, 400v screen.

Product Details:
Plug in solid state replacement for vacuum tubes 5R4 & 5U4. Octal base. Rated @ 2800 vdc, 1 amp. 1-3/8" diameter x 1-1/8" high. Solid State direct replacement modules are much more efficient than their vacuum tube predecessors. In some case, dropping resistors should be used if the higher output voltages often yielded with these diodes will create an unsafe condition. No heater current is required, saving watts there too.

Product Details:
Eimac 4CX2000A. New - dud, dented. Sold as is.

Product Details:
Siemens transmitter tetrode. Coaxial metal-ceramic water cooled with integrated cooling jacket. Suitable for broadcasting single-sideband transmitters medium and short wave. Filament 12.5v 200 amp, max frequency 40 MHz, typical anode 1.4 kv 7.6 amp, typical output power 60 kW. Alternate ordering # Q52-X1084. We also have the sockets for these bad boys - (TUA) EUR-1 or (TUA) EUR-2. Used, removed from service. 25.5 lbs. Sold as-is.

Product Details:
6AW8A, Philips

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
RCA

Product Details:
RCA new, old stock tubes in original World Radiotron boxes. I have only about 50 left. Wonderful tube. Nice sounding. ( image)

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
8904 Eimac Transmitting Tube

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
4D32 Transmitting Tube, New

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6AL5, GE, Boxed consumer. Made in Uruguay. Large quantities available

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6AV6, Various brands*

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6AZ8, Philips / ECG

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6BA6, Various brands*, NOTE: Now includes individual Roe Tester printout with curves. Guaranteed satisfaction.

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6BA7, Various brands*, RCA

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6BE6, Various brands*, Boxed

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6CB6A, GE, Jan,

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
6CL6, GE

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
General Electric

Product Details:
6EB8 / 6GN8, Various brands*

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.

Product Details:
400−1215 MHz

Product Details:
Transmitting Tube, 8965

For a $6 up charge ($5 for 20 tubes or more of same number), individual Roe Tester V10 printouts with curves will be included with individual tubes. This test takes about 10 minutes for each test. The calibrated ROE Tester is the finest test tube testing system available. It will document every operating parameter of the subject tube.