Listing includes Full Factory Sealed Box of 200pcs, Military Packaged and Issued.

Brand: Raytheon

Type: Premium Collective Audio Tube

Model: JAN 6418 / CK548DX

Country of Manufacturer: Military USA

Condition: NIB/ NOS tube

Collective value.

#0299

The 12AT7 is a miniature, high-mu twin triode designed for use as a grounded-grid radio-frequency amplifier or as a combined oscillator and mixer at frequencies below approx 300MHz. It's another very well known tube among guitar players. It has a much lower Gain output at 60, but what you lose in Gain you get back with more headroom, higher fidelity, and an increased current output. Because of their high fidelity they are also used in many tube microphone preamps, compressors, and recording equipment. They are also used in many organs. Because of their higher current you sometimes see them driving effects such as Tube Driven Spring Reverb in many guitar amps. Just like the 12AX7 tube, the 12AT7 has many different versions created for specific reasons, such as low noise and ruggedness.

The 12AT7 can also be substituted in 12AX7 gain stages where users are seeking lower gain response from higher gain positions in the preamp string. 

Admiral, AMC, Amperex, B&K, Beckman, Bell & Howell, Bendix, Berlant Concertone, Brimar, CBS, CBS Hytron, CEi, Channel Master, Clairtone, Conrac, Curtis Mathes, Dumont, El Menco, Electron Tube Laboratories(ETL), Emerson, Eric Engineering By GE, FAA, Fender, GAP/R Computer Tube, GE, Globe Electronics, GM, Delco, Gonset, Granco, Groove Tubes, Hallicrafters, Haltron, Harman Kardon By, Amperex, Heath By Mullard, Heintz & Kaufman, Hewlett Packard, Hickok, Hitachi, Hoffman, Hyvac, Industria, Industrial By Sylvania, International, Ken Rad, Kentron, King Radio Corp, Los Gatos, Magnavox, Matsushita, Mazda, Mazda Belvu, Mesa, STP, Micron, Motorola, Mullard, National, NEC, Olympic, Packard Bell, Philco, Phillips ECG, Phillips Miniwat, Polytronics, Pro Comm, Rad Tel, Raytheon, RCA, RCA White, RFT, Rogers, Sanborn Company, Sherwood, Silver Ray, Silvertone, Sonotone, Sperry Microline, Stromberg Carlson, Sylvania, Sylvania Gold, Brand, Telefunken, Ten, The Fisher, Thief, Toshiba, TOTAL, Trigon, Truetone, Tung Sol, United Electron, Valvo, Westinghouse, WKR By Sylvania, Zenith

The 12AU7 is a miniature medium-mu twin triode. This tube finds use as a phase-inverter/splitter in push-pull amplifier circuits in ac/dc radio equipment and in many diversified applications such as multivibrators or oscillators in industrial control devices. The tube is quite pokey and sections can even be connected in parallel to create a power amp with enough current to drive a pair of headphones or even a guitar speaker. A centre tapped heater permits operation of the tube from a 6.3V or a 12.6V heater supply. The tube requires a noval nine-contact socket and may be mounted in any position.

10M International Short Plate, Admiral, Admiral Black Glass, Admiral Short Ridge, Allied
AMI By Sylvania Ridge, Amperex, Amperex Ridge, Amperex Short Plate, Amperex Short, Ridge, Baldwin, Baldwin Ridge, Barber Coleman, Barber Coleman Short Ridge, Beckman, Beckman Ridge, Beckman Short Ridge, Bell & Howell Short Plate, Berlant Concertone, Blank Black Glass, Blank Ridge, Blank Short Plate, Bogen By Mullard Short Plate, Brimar, Brimar Short Plate, Burroughs Corp., Burroughs Ridge, CBS, CBS Hytron, CBS Hytron Short Plate, CBS Short Plate, CBS Short Plate, CBS Short Ridge, CEi Short Plate, Channel Master, CMC (Computer Measurments Co.), CONN, CONN Ridge, Conrac, Conrac Short Ridge, Cornell, Cornell Short Plate, Crosley, Cunningham, Curtis Mathes, Daystrom, Delco, Delco Short Ridge, Delta, Delta Short Ridge, DeVry Tech By RCA, Dumont, Dumont Ridge, Dumont, Short Plate, Dumont Short Ridge, Dumont-Emerson, EF Johnson By RCA, Eico By, Mullard, El Menco Short Plate, Electronics For Medicine Short Plate, Emerson, Emerson Black Glass, Fleetwood Short Plate, FOMOCO (Ford Motor Co.), GAP/R, GE, GE 5 Star, GE 5 Star Short Plate, GE Blue, GE Blue Ridge, GE Blue Short Ridge, GE France Short Ridge, GE Navy, GE Red Ribbon Short Ridge, GE Short Plate, GE Short Ridge, GE/Mullard/Sylvania (Misprint), Hallicrafters Short Ridge, Hammond, Hammond Ridge, Hammond Short Ridge, Heath By Mullard, Heintz & Kaufman Short Ridge, Hewlett Packard, Hewlett Packard Ridge, Hewlett Packard Short Plate, Hewlett Packard Short Ridge, Hickok, Hitachi, Hitachi Short Plate, Hoffman
Honeywell, Honeywell By RCA, Honeywell Ridge, Honeywell Short Ridge, Hytron
IEC Mullard Short Plate, Industrial By Sylvania Short Ridge, International Short Plate, ITT, Short Plate, Ken Rad, Kentron, Lindal Short Plate, Magnavox, Magnavox Short Ridge, Major Electronics Short Plate, Marconi Short Ridge, Matsushita Short Plate, Mazda, Mazda Short Plate, Mazda Short Ridge, Measurments By RCA, Mercury, Miniwatt Short Plate, Miniwatt Short Plate, Motorola, Mullard
Mullard Short Plate, National, National Ridge, National Short Plate
National Union, NEC, NU (National Union), Penta Labs, Penta Labs Short Ridge, Pentron, Philco, Philco Ridge, Philco Short Plate, Philips ECG Ridge, Pinnacle
Pinnacle Short Plate, Rauland, Rauland Short Ridge, Raytheon, Raytheon Ridge, Raytheon Short Plate, RCA, RCA Command Short Ridge, RCA Institutes Inc. Short Plate, RCA Ridge, RCA Short Plate, RCA Short Ridge, Remington, Sanborn Co., Shield Ridge, Shield Short Ridge, Silvertone, Silvertone Ridge, Silvertone Short Ridge, Sonotone Short Plate, Sterling Electronics Short Plate, Stromberg Carlson, Stromberg Carlson Short Ridge, Super Radiotron, Sylvania, Sylvania Gold Brand, Sylvania Gold Brand Ridge, Sylvania Gold Brand Short Plate, Sylvania Gold Brand Short Ridge, Sylvania Ridge, Sylvania Short Plate, Sylvania Short Ridge, Telectro, Telefunken, Teleking, Teleking, Teletone, Ten, The Fisher Short Plate, Triad Short Plate, Truetone, Tung Sol, Tung Sol Black Glass, Tung Sol Ridge, Tung, Sol Short Ridge, Valvo, Webcor, Webcor Short Ridge, Westinghouse, Westinghouse Ridge, Westinghouse Short Plate, Westinghouse Short Ridge, Wurlitzer, Zenith, Zenith Ridge, Zenith Short Ridge

6AU6 is an indirectly heated RF pentode. The heater is intended for operation in parallel with other valves in AC operated equipment. The valve is designed for use as an RF or IF amplifier, suitable shielding and short leads provide a good performance in high frequency circuits.

10M master series yellow,Admiral white,Admiral yellow,Amperex orange,Amperex white,Arkay white,Beckman orange,Bendix yellow,blank,Capehart white,Cbs blue/white,Cbs orange,Cei white,Channel master white,Cifte white,Conrac green,Conrac red,Cornell white,Crosley white,Crosley yellow,Curtis Mathes green,Daystrom white,Delco white,Dumont green,Dumont white,Dumont yellow,Dynaco by mullard white,Dynamic yellow,Eico by mullard white,Emerson white,Emerson yellow,Executone white,Fisher white,Garod white,Ge 5 star green,Ge 5 star orange,Ge 5 star white,Ge green,Ge jlrv red,Ge jlrv white,Ge Mili white,Ge orange,Ge white,Groove tubes red,Haltron green,Harman kardon by Amperex white,Heath by Mullard white,Hewlett Packard blue,Hewlett Packard orange,Hewlett Packard white,Hewlett Packard yellow,Hientz & Kauffman multicolor,Hitachi white,Hoffman orange,Hoffman white,Hoffman yellow,Hytron white,Iec Mullard white,Industrial by Sylvania green,International white,Itt white,J W miller green,Jackson white,Ken rad white,Lindal white,Magnavox orange,Magnavox white,Magnavox yellow,Marconi white,Matsushita white,Mcintosh white,Micro yellow,Miniwatt Dario multicolor,Mitchell by rca white,Motorola orange,Motorola white,Motorola yellow/green,Mullard white,Muntz tv white,National red,National Union white,NEC white,Olympic yellow,Packard bell orange,Packard bell white,Pacotronics white,Philco orange,Philco yellow,Phillips blue,Phillips green,Phillips yellow,Quality yellow,Rad tel white,Rangaice white,Rauland orange,Raytheon blue,Raytheon orange,Raytheon yellow,Rca block print orange,Rca command,Rca green,Rca Mili orange,Rca Mili white,Rca orange,Rca victor white,Rca white,Remington green,Sears white,Sentinel orange,Setchell Carlson green,Setchell Carlson multi color,Sherwood yellow,Silvertone orange,Silvertone red,Silvertone white,Silvertone yellow,Stromberg carlson white,Stromberg carlson yellow,Sylvania gold brand,Sylvania green,Sylvania mili green,Sylvania orange,Sylvania red,Sylvania white faded misfits,Sylvania yellow,Systron donner yellow,Telefunken white,Telequip white,Teletone white,Teletone yellow,Toshiba tan,Toshiba white,TOTAL,Trav ler white,Trutone orange,Truvac blue,Tung sol green,Tung sol orange,Tung sol white,Tung sol yellow,Ultratone yellow,Webster electric orange,Westinghouse orange,Westinghouse white,Westinghouse yellow,Zaerix white,Zenith orange,Zenith white,Zenith yellow

The 6AQ5 is a miniature beam-power pentode designed for use in the audio- frequency power output stage of television and radio receivers.

Brand,Admiral yellow,Amperex orange,Beckman orange,Bell & howell yellow,Blank,Brimar white,Burroughs white,CBS orange,Channel master white,Colomor white,Conrac orange,Cunningham white,Curtis mathes white,Daystrom red,Dumont multi color,Dumont orange,EICO white,Electronic secretary white,Ge 5 star red,Ge 5 star white,Ge green,Ge jlrv multi color,Ge Mili white,Ge red/ orange,Ge white,Hewllett packard white,Hewllett Packard yellow,Hitachi multi color,IEC white,Industro white,International white,ITT white,Ken rad multi color,Magnavox white,Magnavox yellow,Matsushita white,Mazda multi color,Micro white,Motorola multi color,Motorola orange,Mullard white,National multi color,NEC white,Packard bell multi color,Philco multi color,Philco yellow,Rad Tel white,Raytheon orange,Raytheon yellow,Rca block print orange,Rca Mili orange,Rca Mili white,Rca orange,Rca white,Reliable selectron yellow,Remington green,Sanborn company orange,Sears orange,Setchell carlson yellow,Shield yellow,Silvertone multi color,Silvertone orange,Silvertone white,Sonotone white,Sylvania blank,Sylvania gold brand,Sylvania green,Sylvania orange,Sylvania white/faded,Sylvania yellow,Telefunken white,Toshiba white,TOTAL,Tung sol white,Tung sol yellow,Webster electric orange,Westinghouse multi color,Westinghouse yellow,Zenith red,Zenith white,Zenith yellow