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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 Used in satellite earth stations that have been replaced by the TWTs.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:

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
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
SIEMENS E282F Vintage Vacuum Pentode Tube UHF STRONG TESTED
SIEMENS E282F Vintage Vacuum Pentode Tube UHF STRONG TESTED
$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
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
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
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
$59.99
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
TUNGSRAM UBL21  UBL71 Double Diode Pentode Tube NEW
TUNGSRAM UBL21 UBL71 Double Diode Pentode Tube NEW
$9.99
TELEFUNKEN AL4 375  4684 Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN AL4 375 4684 Vintage Vacuum Pentode Tube TESTED
$24.99
TESLA AL4n Vintage Vacuum Pentode Tube Tested
TESLA AL4n Vintage Vacuum Pentode Tube Tested
$14.99
VALVO KF4  2B4 Ultron  TKF4  BHP61 1939 Vacuum Pentode Tube Tested
VALVO KF4 2B4 Ultron TKF4 BHP61 1939 Vacuum Pentode Tube Tested
$14.99
RUSSIAN MILITARY PENTODE GU 81M HAM RADIO TUBE NEW
RUSSIAN MILITARY PENTODE GU 81M HAM RADIO TUBE NEW
$29.99
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
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
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
1P24B V Russian miniature pentode Tubes New Lot 4pcs
1P24B V Russian miniature pentode Tubes New Lot 4pcs
$10.00
1x New Nos CV5056 6U8 ECF82 Ediswan make made in UK Tested Amplitrex AT1000
1x New Nos CV5056 6U8 ECF82 Ediswan make made in UK Tested Amplitrex AT1000
$45.00
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
TELEFUNKEN LV1 Vintage WEHRMACHT Vacuum Pentode Tube + Socket
TELEFUNKEN LV1 Vintage WEHRMACHT Vacuum Pentode Tube + Socket
$9.99
TUNGSRAM HP4106  S434N  E447 Vintage Vacuum Pentode Tube
TUNGSRAM HP4106 S434N E447 Vintage Vacuum Pentode Tube
$9.99
TUNGSRAM UF9  MUF9 Vintage Vacuum Pentode Tube  NEW
TUNGSRAM UF9 MUF9 Vintage Vacuum Pentode Tube NEW
$14.99
1x EBL21 Vintage TELAM Double Diode Pentode Power Output TUBE  EBL71  PDD2
1x EBL21 Vintage TELAM Double Diode Pentode Power Output TUBE EBL71 PDD2
$11.04
1J29B V Russian miniature pentode Tubes New Lot of 100
1J29B V Russian miniature pentode Tubes New Lot of 100
$99.00
6J43P E Double Anode Pentode Tube Halo getter
6J43P E Double Anode Pentode Tube Halo getter
$2.15
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
$4.99
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
$9.99
2 x PHILIPS SQ E80F Vintage Audio Vacuum Pentode Tube Gold Pin Tested
2 x PHILIPS SQ E80F Vintage Audio Vacuum Pentode Tube Gold Pin Tested
$19.99
2 x TELEFUNKEN E80CF Vintage Pentode Tubes DIAMOND NEW GOLD PINS SAME CODES
2 x TELEFUNKEN E80CF Vintage Pentode Tubes DIAMOND NEW GOLD PINS SAME CODES
$34.99
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
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
$14.99
1x Siemens F80U Radio Valve Pentode Vacuum Tube
1x Siemens F80U Radio Valve Pentode Vacuum Tube
$6.99
NOS NIB 100x C3m Siemens made in Germany Audio Tube
NOS NIB 100x C3m Siemens made in Germany Audio Tube
$2,000.00
1J37B Russian miniature pentode Tubes NOS Lot of 15
1J37B Russian miniature pentode Tubes NOS Lot of 15
$18.00
6J2B V HF pentode tubes Lot of 8 pc NOS
6J2B V HF pentode tubes Lot of 8 pc NOS
$8.00
70 PCS 1J18B 118 RUSIAN MINIATURE TUBE HF PENTODE IN ORIGINAL BOX MILITARY
70 PCS 1J18B 118 RUSIAN MINIATURE TUBE HF PENTODE IN ORIGINAL BOX MILITARY
$44.00
2 x VALVO E80F Vintage Audio Vacuum Pentode Tube Gold Pin NOS
2 x VALVO E80F Vintage Audio Vacuum Pentode Tube Gold Pin NOS
$45.00
2 x CEI EF800 Vintage Vacuum Pentode Tubes Tested with Gold Pins
2 x CEI EF800 Vintage Vacuum Pentode Tubes Tested with Gold Pins
$18.00
2 x TELEFUNKEN EF800 Vintage Vacuum Pentode Tubes Tested  Diamond
2 x TELEFUNKEN EF800 Vintage Vacuum Pentode Tubes Tested Diamond
$30.00
2 x SIEMENS EF80 Vintage Vacuum Pentode Tubes NEW
2 x SIEMENS EF80 Vintage Vacuum Pentode Tubes NEW
$12.00
RARE RUSSIAN MILITARY 6J4 6AC7 6AJ7 SUBMARINE PENTODE TUBE VALVE 1952y
RARE RUSSIAN MILITARY 6J4 6AC7 6AJ7 SUBMARINE PENTODE TUBE VALVE 1952y
$9.00
Soviet miniature HF PENTODE Tube 6Zh9G 10pcs
Soviet miniature HF PENTODE Tube 6Zh9G 10pcs
$19.95
Victoreen 7234 Vacuum Electron Pentode NOS Tube Radio
Victoreen 7234 Vacuum Electron Pentode NOS Tube Radio
$19.95
1J37B Russian miniature pentode Tubes NOS one or more
1J37B Russian miniature pentode Tubes NOS one or more
$1.00
2 x 6P18P  EL82 Output Pentode Audiophile Tubes NOS Reflektor Plant NOS USSR
2 x 6P18P EL82 Output Pentode Audiophile Tubes NOS Reflektor Plant NOS USSR
$13.00
1x GK 71 Russian 125W Power Pentode Generator Tube Graphite Plate NOS Tested
1x GK 71 Russian 125W Power Pentode Generator Tube Graphite Plate NOS Tested
$18.00
10pcs 1J29B V 1Zh29B V Small Miniature Tube HF Pentode NOS 1J29B
10pcs 1J29B V 1Zh29B V Small Miniature Tube HF Pentode NOS 1J29B
$6.66
1P24B V Russian miniature pentode Tubes New Lot 10
1P24B V Russian miniature pentode Tubes New Lot 10
$14.00
2J27P Russian Pentode 120Mhz Tube NIB
2J27P Russian Pentode 120Mhz Tube NIB
$2.17
Vintage 60s EF14 RFT Vacuum Pentode RF IF Stage TUBE + SOCKET
Vintage 60s EF14 RFT Vacuum Pentode RF IF Stage TUBE + SOCKET
$56.66
25 PCS 6J5B V 65  RUSIAN MINIATURE TUBE HF PENTODE MILITARY
25 PCS 6J5B V 65 RUSIAN MINIATURE TUBE HF PENTODE MILITARY
$24.00
70 PCS 1P24B V 1P24B RUSIAN MINIATURE TUBE HF PENTODE IN ORIGINAL BOX MILITARY
70 PCS 1P24B V 1P24B RUSIAN MINIATURE TUBE HF PENTODE IN ORIGINAL BOX MILITARY
$66.00
10 PCS 1P24B V 1P24B RUSIAN MINIATURE TUBE HF PENTODE IN ORIGINAL BOX MILITARY
10 PCS 1P24B V 1P24B RUSIAN MINIATURE TUBE HF PENTODE IN ORIGINAL BOX MILITARY
$12.00
70 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY IN ORIGINAL BOX
70 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY IN ORIGINAL BOX
$28.00
GU 81M High Power 750W 50MHz Pentode GU81M GU81 HAM Transmitting Generator Tube
GU 81M High Power 750W 50MHz Pentode GU81M GU81 HAM Transmitting Generator Tube
$49.00
JRC 3P41 Transmitting Tube Tetrode or Pentode
JRC 3P41 Transmitting Tube Tetrode or Pentode
$288.00
6EJ7 EF184 Pentode Russian 6J51P Tube
6EJ7 EF184 Pentode Russian 6J51P Tube
$1.85
Svetlana 6AK7 6AG7 Pentode Tube 6P9 Metal envelope
Svetlana 6AK7 6AG7 Pentode Tube 6P9 Metal envelope
$2.20
6AF9  EFL200  6Y9 Double Pentode Tube
6AF9 EFL200 6Y9 Double Pentode Tube
$1.80
6EJ7 EF184 Pentode Russian 6J51P Tubes Lot of 4
6EJ7 EF184 Pentode Russian 6J51P Tubes Lot of 4
$6.95
E180F  6688 Pentode Tube Russian 6J9P
E180F 6688 Pentode Tube Russian 6J9P
$2.00
GU 81 High Power 750W 50MHz Pentode GU81M GU81 HAM Transmitting Generator Tube
GU 81 High Power 750W 50MHz Pentode GU81M GU81 HAM Transmitting Generator Tube
$70.00
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
6SG7 Metal Tube 6006 Remote Cutoff Pentode
6SG7 Metal Tube 6006 Remote Cutoff Pentode
$3.38
E180F  6688 Pentode Tubes Russian 6J9P Lot of 4
E180F 6688 Pentode Tubes Russian 6J9P Lot of 4
$7.48
2x Philips E180F Special Quality SQ Pentode Vacuum Tube Gold Pins
2x Philips E180F Special Quality SQ Pentode Vacuum Tube Gold Pins
$14.99
6AF9  EFL200  6Y9 Double Pentode Tube
6AF9 EFL200 6Y9 Double Pentode Tube
$4.74
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
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
6AH6 Pentode Tubes Russian 6J5P Lot of 4
6AH6 Pentode Tubes Russian 6J5P Lot of 4
$6.50


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