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Pentode Tubes

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Pentode Tubes
About the good old days of vacuum tubes in electronic current What is the situation?

That diode, pentode, TWT, magnetron, Klystron tetrode, tirode to dynatron, so ... Why are they doing? Use, they still do or gone into oblivion? It's just curious to know their fate. There's no one for me To provide information about their current situation? Or on the website Any links?

It was some time in my life I love to be the best, and then remains "to know John Appears to have reached the old "! Thermionic devices using Not useful yet. triodes, tetrodes, and the tubes where the high power pentodes Is required. If you need to generate 10 megawatts of kWatts or radio transmitter then how is that going to the thermionic device. Still broadband TWTs amplifiers satellite transponder, satellite earth stations Radar used to use a few applications. Magnetrons Of course, the microwave power source. They are reasonable The ability to produce efficient control of the output pulse power Can. Frequency stability is not an issue in the oven. Klystron high power amplifiers are widely used. It is from the TV transmitters, radar transmitters, some of which are in use. Used in satellite earth stations that have been replaced by the TWTs. I only have one piece of equipment used dynatron report will remember. They like a little version of the tunnel said thermionic diode. I am Sure they are very noisy by today's devices and I'll be able to use them longer unthinkable Can.

Check out the Pentode Tubes listings below and save 20% to 70% off retail prices:

NOS Tube CV2231 GEC Pulse Modulator Pentode Electron Tube Made in England
NOS Tube CV2231 GEC Pulse Modulator Pentode Electron Tube Made in England
$59.99
6AF9  EFL200  6Y9 Double Pentode Tube
6AF9 EFL200 6Y9 Double Pentode Tube
$4.74
2 x TESLA EF806 S Vintage Vacuum Pentode Tubes  NEW NOS SAME CODE
2 x TESLA EF806 S Vintage Vacuum Pentode Tubes NEW NOS SAME CODE
$29.99
2 x TESLA EL84  6BQ5  6P15  CV2975  N709  6P14P Vacuum Pentode Tubes STRONG
2 x TESLA EL84 6BQ5 6P15 CV2975 N709 6P14P Vacuum Pentode Tubes STRONG
$19.99
2 x VALVO E80F Vintage Audio Vacuum Pentode Tube Gold Pin Tested
2 x VALVO E80F Vintage Audio Vacuum Pentode Tube Gold Pin Tested
$19.99
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
$14.99
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
$9.99
RARE Military Russian Pentode Tubes Tube 12Zh1L 5pcs
RARE Military Russian Pentode Tubes Tube 12Zh1L 5pcs
$7.95
6K3  6SK7 RUSSIAN PENTODE TUBESLot of 8 NEW LOOK
6K3 6SK7 RUSSIAN PENTODE TUBESLot of 8 NEW LOOK
$29.00
20 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY
20 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY
$12.00
20 PCS 1J18B 118 RUSIAN MINIATURE TUBE HF PENTODE MILITARY
20 PCS 1J18B 118 RUSIAN MINIATURE TUBE HF PENTODE MILITARY
$18.00
6J7 Metal Tube EF36 Sharp Cutoff Pentode
6J7 Metal Tube EF36 Sharp Cutoff Pentode
$2.75
50x 4P1L4LS1RL24P6 Russian Direct Heated Pentode Tubes 1960s Svetlana
50x 4P1L4LS1RL24P6 Russian Direct Heated Pentode Tubes 1960s Svetlana
$350.00
1 NOS rare GEC A2266 CV2231 PULSE PENTODE VACCUM TUBE VALVE
1 NOS rare GEC A2266 CV2231 PULSE PENTODE VACCUM TUBE VALVE
$19.99
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
$12.99
Soviet miniature PENTODE Tube 6Zh10B 15pcs
Soviet miniature PENTODE Tube 6Zh10B 15pcs
$9.95
REFLECTOR 4pcs 6P14P EL84 7189 6BQ5 PENTODE TUBES NOS
REFLECTOR 4pcs 6P14P EL84 7189 6BQ5 PENTODE TUBES NOS
$20.00
4 Nos Valvo DAF91 Vacuum Tube 1S5 ZD17 1B2 1S5 1FD9 Diode Cut Off Pentode
4 Nos Valvo DAF91 Vacuum Tube 1S5 ZD17 1B2 1S5 1FD9 Diode Cut Off Pentode
$24.99
6P15P EV EL83 SV83 pentode tubes Lot of 50 pcs NOS NIB
6P15P EV EL83 SV83 pentode tubes Lot of 50 pcs NOS NIB
$179.99
6P15P EV EL83 SV83 pentode tubes Lot of 4 pcs NOS NIB
6P15P EV EL83 SV83 pentode tubes Lot of 4 pcs NOS NIB
$13.00
6P15P EV EL83 SV83 pentode tubes Lot of 10 pcs NOS NIB
6P15P EV EL83 SV83 pentode tubes Lot of 10 pcs NOS NIB
$29.99
RARE Military Russian Pentode Tubes Tube 12Zh1L 25pcs
RARE Military Russian Pentode Tubes Tube 12Zh1L 25pcs
$19.95
Military Pentode tube TESLA EL803S Lot of 4
Military Pentode tube TESLA EL803S Lot of 4
$23.95
2 x PHILIPS E55L  CV5808  8233 SQ Vintage Vacuum Pentode Tubes TESTED
2 x PHILIPS E55L CV5808 8233 SQ Vintage Vacuum Pentode Tubes TESTED
$14.99
SIEMENS E282F Vintage Vacuum Pentode Tube UHF STRONG TESTED
SIEMENS E282F Vintage Vacuum Pentode Tube UHF STRONG TESTED
$14.99
MATCHED PAIR 2 x TELEFUNKEN E280F Vacuum Pentode Tubes Gold Pin STRONG
MATCHED PAIR 2 x TELEFUNKEN E280F Vacuum Pentode Tubes Gold Pin STRONG
$34.99
RARE  DARIO 4654 Vintage Vacuum Pentode Tube TESTED 60mA
RARE DARIO 4654 Vintage Vacuum Pentode Tube TESTED 60mA
$24.99
2 x TELAM EL84 Vintage Vacuum Pentode Tubes TESTED STRONG
2 x TELAM EL84 Vintage Vacuum Pentode Tubes TESTED STRONG
$14.99
2 x FUNKWERK EF860 Vintage Vacuum Pentode Tubes NEW
2 x FUNKWERK EF860 Vintage Vacuum Pentode Tubes NEW
$9.99
2 x FUNKWERK IL861 Vintage Vacuum Pentode Tubes NEW
2 x FUNKWERK IL861 Vintage Vacuum Pentode Tubes NEW
$9.99
2 x PHILIPS SQ 18042  6086 Vintage Vacuum Pentode Tubes NEW
2 x PHILIPS SQ 18042 6086 Vintage Vacuum Pentode Tubes NEW
$12.99
LORENZ EL84  6BQ5  6P15  CV2975  N709  614 Vintage Pentode Tube TEST
LORENZ EL84 6BQ5 6P15 CV2975 N709 614 Vintage Pentode Tube TEST
$9.99
2 x RFT EL34 Vintage Vacuum Pentode Tubes TESTED
2 x RFT EL34 Vintage Vacuum Pentode Tubes TESTED
$49.99
2 x RWN NEUHAUS RV12P2000  PV1 Vintage Vacuum Pentode Universal Tubes NEW
2 x RWN NEUHAUS RV12P2000 PV1 Vintage Vacuum Pentode Universal Tubes NEW
$29.99
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
$12.99
TUNGSRAM EL11 Vintage Vacuum Pentode Tube Tested
TUNGSRAM EL11 Vintage Vacuum Pentode Tube Tested
$24.99
TUNGSRAM EL12 Vintage Vacuum Pentode Tube NEW
TUNGSRAM EL12 Vintage Vacuum Pentode Tube NEW
$29.99
TELEFUNKEN EF12 k Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN EF12 k Vintage Vacuum Pentode Tube TESTED
$19.99
TELEFUNKEN EF12 Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN EF12 Vintage Vacuum Pentode Tube TESTED
$24.99
TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
$79.99
TUNGSRAM UBL21  UBL71 Double Diode Pentode Tube NEW
TUNGSRAM UBL21 UBL71 Double Diode Pentode Tube NEW
$9.99
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1986
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1986
$41.00
1 X GU 81M HIGH POWER 750W 50MHz PENTODE HAM TRANSMITTING GENERATOR TUBE 1 PCS
1 X GU 81M HIGH POWER 750W 50MHz PENTODE HAM TRANSMITTING GENERATOR TUBE 1 PCS
$49.00
6B8 Double Diode + Pentode Tubes Lot of 4
6B8 Double Diode + Pentode Tubes Lot of 4
$11.95
20pcs 1J29B V 1Zh29B V Small Miniature Tube HF Pentode NOS 1J29B Russia NOS
20pcs 1J29B V 1Zh29B V Small Miniature Tube HF Pentode NOS 1J29B Russia NOS
$12.12
Pentode 06P2B  XFW40 Tube lamp USSR Lot of 1pcs
Pentode 06P2B XFW40 Tube lamp USSR Lot of 1pcs
$14.00
Pentode 6V1P Tube lamp USSR Lot of 4 pcs
Pentode 6V1P Tube lamp USSR Lot of 4 pcs
$11.00
High frequency pentode 6J20P Tube lamp USSR Lot of 3 pcs
High frequency pentode 6J20P Tube lamp USSR Lot of 3 pcs
$10.00
6AF9  EFL200  6Y9 Double Pentode Tubes Lot of 4
6AF9 EFL200 6Y9 Double Pentode Tubes Lot of 4
$6.80
NOS Raytheon CK 534AX Sub miniature Pentode Tube for Portable Equipment N R
NOS Raytheon CK 534AX Sub miniature Pentode Tube for Portable Equipment N R
$3.50
2x ADZAM E80CF SQ Special Quality Triode Pentode Tube Gold Pins SAME CODES
2x ADZAM E80CF SQ Special Quality Triode Pentode Tube Gold Pins SAME CODES
$40.00
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1980
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1980
$42.00
2x Siemens EL84 Output Pentode Vacuum Tube Penthode De Sorite Endpentode
2x Siemens EL84 Output Pentode Vacuum Tube Penthode De Sorite Endpentode
$89.99
Philips military JAN6AU6WC up to 10 miniature sharp cutoff pentode vacuum tube
Philips military JAN6AU6WC up to 10 miniature sharp cutoff pentode vacuum tube
$6.50
2 PCS GU 50  50 LS 50 AUDIOPHILE PENTODE TUBE IN ORIGINAL BOX MILITARY
2 PCS GU 50 50 LS 50 AUDIOPHILE PENTODE TUBE IN ORIGINAL BOX MILITARY
$10.00
8 PCS GU 50  50 LS 50 AUDIOPHILE PENTODE TUBE IN ORIGINAL BOX MILITARY
8 PCS GU 50 50 LS 50 AUDIOPHILE PENTODE TUBE IN ORIGINAL BOX MILITARY
$30.00
2 x TESLA EF806 S Vintage Vacuum Pentode Tubes  NEW NOS SAME CODE
2 x TESLA EF806 S Vintage Vacuum Pentode Tubes NEW NOS SAME CODE
$24.99
2 x MAZDA MEDIUM EL41 + SOCKET Vacuum Pentode Tubes Tested
2 x MAZDA MEDIUM EL41 + SOCKET Vacuum Pentode Tubes Tested
$9.99
1 NOS 1957 British Military TUBE GEC A2266 CV2231 PULSE PENTODE VACCUM VALVE
1 NOS 1957 British Military TUBE GEC A2266 CV2231 PULSE PENTODE VACCUM VALVE
$19.99
Brand New Bugera 555 24050 El84 Pentode Power Tube
Brand New Bugera 555 24050 El84 Pentode Power Tube
$33.00
RARE Vintage 40s TESLA EL3 Vacuum Pentode Power TUBE  3REP6 TEL3 6E6 VEL3
RARE Vintage 40s TESLA EL3 Vacuum Pentode Power TUBE 3REP6 TEL3 6E6 VEL3
$33.99
1J18B Russian miniature pentode Tubes New Lot of 100
1J18B Russian miniature pentode Tubes New Lot of 100
$79.00
3 X Russian 6J9P  E180  6688 PENTODE tubes PCS 3
3 X Russian 6J9P E180 6688 PENTODE tubes PCS 3
$4.00
6SK7 Metal Tube 6137 Remote Cutoff Pentode
6SK7 Metal Tube 6137 Remote Cutoff Pentode
$2.95
Svetlana 12J1L HF 200MHz Pentode Tubes Lot of 4
Svetlana 12J1L HF 200MHz Pentode Tubes Lot of 4
$9.70
GU80 GU 80 GU 81 GU 81M VINTAGE Russian Vacuum Pentode Tube 1968 QTY 1
GU80 GU 80 GU 81 GU 81M VINTAGE Russian Vacuum Pentode Tube 1968 QTY 1
$55.00
6AJ7 Pentode Tube
6AJ7 Pentode Tube
$2.85
6B8 Double Diode + Pentode Tube
6B8 Double Diode + Pentode Tube
$3.95
6AH6 Pentode Tubes Russian 6J5P Lot of 4
6AH6 Pentode Tubes Russian 6J5P Lot of 4
$6.50
6SH7 Sharp Cutoff Pentode Tube Russian 6J3
6SH7 Sharp Cutoff Pentode Tube Russian 6J3
$3.85
LOT 10 new tubes pentode tungsram 89  6F6 42
LOT 10 new tubes pentode tungsram 89 6F6 42
$89.00
1 new tube pentode tungsram 89  6F6 42
1 new tube pentode tungsram 89 6F6 42
$9.60
6AS6 5725 6F36 HF baby Pentode Tube Russian 6J2P
6AS6 5725 6F36 HF baby Pentode Tube Russian 6J2P
$1.00
4x 4P1L4LS1RL24P6 Russian Direct Heated Pentode Tubes Svetlana NOS Tested
4x 4P1L4LS1RL24P6 Russian Direct Heated Pentode Tubes Svetlana NOS Tested
$24.00
1x 6SK7 RFT Vacuum Pentode RF IF Stage TUBE  6k3 6k17b VT 117 CV1981
1x 6SK7 RFT Vacuum Pentode RF IF Stage TUBE 6k3 6k17b VT 117 CV1981
$4.72
Lot of 4 6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
Lot of 4 6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
$5.00
Lot of 2 6P18P Pentode Output TUBE EL82 tube Saratov 1987
Lot of 2 6P18P Pentode Output TUBE EL82 tube Saratov 1987
$3.00
Lot of 10 6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
Lot of 10 6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
$12.00
Lot of 2 6R4P HF Double Pentode TUBES Vinitsa 1987
Lot of 2 6R4P HF Double Pentode TUBES Vinitsa 1987
$4.00
6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
$2.00
2 X Russian 1520 6J9P number tube for space  6688 PENTODE tubes PCS 2
2 X Russian 1520 6J9P number tube for space 6688 PENTODE tubes PCS 2
$13.00
1J24B Russian miniature pentode Tubes New Lot 15
1J24B Russian miniature pentode Tubes New Lot 15
$15.00
Lamp tube 6R4P HF Double Pentode USSR Lot of 4 psc
Lamp tube 6R4P HF Double Pentode USSR Lot of 4 psc
$6.00
2x Svetlana 6J32P Low Noise Pentode Vacuum Tube Made in USSR NEW NOS
2x Svetlana 6J32P Low Noise Pentode Vacuum Tube Made in USSR NEW NOS
$10.99
2x Russian 6N6P Low Noise Pentode Vacuum Tube Made in USSR NEW NOS
2x Russian 6N6P Low Noise Pentode Vacuum Tube Made in USSR NEW NOS
$14.99
RF Pentode with the cathode grid 6J22P 7W  200MHz
RF Pentode with the cathode grid 6J22P 7W 200MHz
$4.85
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
$9.00
GU50 HAM Audiophile Output Pentode Tube
GU50 HAM Audiophile Output Pentode Tube
$6.95
EF91 6AM6 PHILIPS PENTODE TUBE NOS in BOX
EF91 6AM6 PHILIPS PENTODE TUBE NOS in BOX
$7.73
6EH7  EF183 HF Pentode Tube 6K13P
6EH7 EF183 HF Pentode Tube 6K13P
$0.99
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
$7.90
6AK5  EF95 VHF Pentode tubes Russian 6J1P Lot of 5
6AK5 EF95 VHF Pentode tubes Russian 6J1P Lot of 5
$9.95
6AK5  EF95 VHF Pentode tubes Russian 6J1P
6AK5 EF95 VHF Pentode tubes Russian 6J1P
$2.25
4 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
4 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
$7.99
12 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
12 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
$19.99
12SG7 RF IF Pentode tube Russian 12K4 Vintage 1965
12SG7 RF IF Pentode tube Russian 12K4 Vintage 1965
$3.85
4pcs x 6J5B V 6ZH5B V Miniature Military HF Pentode Tube NEW
4pcs x 6J5B V 6ZH5B V Miniature Military HF Pentode Tube NEW
$10.00
12pc 6J38P HF pentode tube USSR Military for audio NEW
12pc 6J38P HF pentode tube USSR Military for audio NEW
$19.00
6J9P  E180F  6688 Russian HF Pentode Tubes Lot of 40
6J9P E180F 6688 Russian HF Pentode Tubes Lot of 40
$29.00


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