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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 Used in satellite earth stations that have been replaced by the TWTs.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
3 NOS 12SF7 Diode Amplifier Pentode Tube N R
3 NOS 12SF7 Diode Amplifier Pentode Tube N R
$4.99
4 NOS JAN CRC 12SH7 VT 288 Vacuum Pentode RF IF Stage Radio Tube N R
4 NOS JAN CRC 12SH7 VT 288 Vacuum Pentode RF IF Stage Radio Tube N R
$4.99
3 Used 42 Pentode Power Amplifier Tube N R
3 Used 42 Pentode Power Amplifier Tube N R
$14.99
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
$9.00
RF Pentode with the cathode grid 6J22P 7W  200MHz
RF Pentode with the cathode grid 6J22P 7W 200MHz
$4.85
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
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
1zh17b or 1j17b Russian Subminiature pentode tube
1zh17b or 1j17b Russian Subminiature pentode tube
$1.00
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
$20.00
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
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
6J43P E Double Anode Pentode Tube Halo getter
6J43P E Double Anode Pentode Tube Halo getter
$2.15
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES NEW 1991
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES NEW 1991
$39.00
SVETLANA 2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1957 1958
SVETLANA 2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1957 1958
$40.00
2 x GK 71  GK71 GK 71 Tubes NEW STRONG Hi End Power Pentode GRAPHITE Plate
2 x GK 71 GK71 GK 71 Tubes NEW STRONG Hi End Power Pentode GRAPHITE Plate
$39.00
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
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
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
6K4P EV  EF93  6BA6  W727 PENTODE TUBE LOT OF 10
6K4P EV EF93 6BA6 W727 PENTODE TUBE LOT OF 10
$16.00
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
$39.00
JRC 3P41 Transmitting Tube Tetrode or Pentode
JRC 3P41 Transmitting Tube Tetrode or Pentode
$288.00
4x GU 50LS 50P50FU 50 Russian Power Pentode Tubes NOS Tested
4x GU 50LS 50P50FU 50 Russian Power Pentode Tubes NOS Tested
$20.00
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
10 NOS JAN 5672 CV2238 CK5672 Raytheon Pentode Vacuum Tube Guitar stomp box
10 NOS JAN 5672 CV2238 CK5672 Raytheon Pentode Vacuum Tube Guitar stomp box
$29.99
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
$49.00
6AF9  EFL200  6Y9 Double Pentode Tube
6AF9 EFL200 6Y9 Double Pentode Tube
$4.74
1 NOS rare GEC A2266 CV2231 PULSE PENTODE VACCUM TUBE VALVE
1 NOS rare GEC A2266 CV2231 PULSE PENTODE VACCUM TUBE VALVE
$19.99
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
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
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
Soviet miniature PENTODE Tube 6Zh10B 15pcs
Soviet miniature PENTODE Tube 6Zh10B 15pcs
$9.95
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
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 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
$47.00
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
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
6B8 Double Diode + Pentode Tubes Lot of 4
6B8 Double Diode + Pentode Tubes Lot of 4
$11.95
10 Qty 1P24B V Vintage Russian tiny HF pentode tube NEW Military Grade 1P24B HQ
10 Qty 1P24B V Vintage Russian tiny HF pentode tube NEW Military Grade 1P24B HQ
$11.11
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
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
6AF9  EFL200  6Y9 Double Pentode Tubes Lot of 4
6AF9 EFL200 6Y9 Double Pentode Tubes Lot of 4
$6.80
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1980
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1980
$42.00
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
6V6GT Beam Pentode Black Glass Audio Tubes Tested Pulls Guaranteed
6V6GT Beam Pentode Black Glass Audio Tubes Tested Pulls Guaranteed
$12.00
Brand New Bugera 555 24050 El84 Pentode Power Tube
Brand New Bugera 555 24050 El84 Pentode Power Tube
$32.47
6BQ5 Medium Power Pentode Audio Tube Tested Pulls Guaranteed
6BQ5 Medium Power Pentode Audio Tube Tested Pulls Guaranteed
$7.00
6V6GT Beam Pentode Clear Glass Audio Tubes Tested Pulls Guaranteed
6V6GT Beam Pentode Clear Glass Audio Tubes Tested Pulls Guaranteed
$8.00
6V6GT Beam Pentode Smoked Glass Audio Tubes Tested Pulls Guaranteed
6V6GT Beam Pentode Smoked Glass Audio Tubes Tested Pulls Guaranteed
$11.00
E180F  6688 Pentode Tubes Russian 6J9P Lot of 4
E180F 6688 Pentode Tubes Russian 6J9P Lot of 4
$7.48
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
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
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
6AF9  EFL200  6Y9 Double Pentode Tube
6AF9 EFL200 6Y9 Double Pentode Tube
$1.80
6AH6 Pentode Tubes Russian 6J5P Lot of 2
6AH6 Pentode Tubes Russian 6J5P Lot of 2
$3.40
6EJ7 EF184 Pentode Russian 6J51P Tubes Lot of 4
6EJ7 EF184 Pentode Russian 6J51P Tubes Lot of 4
$6.95
6SG7 Metal Tube 6006 Remote Cutoff Pentode
6SG7 Metal Tube 6006 Remote Cutoff Pentode
$3.38
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
4x 4P1L4LS1RL24P6 Russian Direct Heated Pentode Tubes Svetlana NOS Tested
4x 4P1L4LS1RL24P6 Russian Direct Heated Pentode Tubes Svetlana NOS Tested
$20.00
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
6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
$2.00
Lot of 2 6R4P HF Double Pentode TUBES Vinitsa 1987
Lot of 2 6R4P HF Double Pentode TUBES Vinitsa 1987
$4.00


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