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 Used in satellite earth stations that have been replaced by the TWTs.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

6AF9  EFL200  6Y9 Double Pentode Tubes Lot of 4
6AF9 EFL200 6Y9 Double Pentode Tubes Lot of 4
$6.80
4x 2P29L output HF Pentode 120MHz Tube Soviet USSR Lot of 4pcs
4x 2P29L output HF Pentode 120MHz Tube Soviet USSR Lot of 4pcs
$7.55
10x 6J10B V HF miniature pentode tubes Soviet USSR NEW Lot of 10pcs
10x 6J10B V HF miniature pentode tubes Soviet USSR NEW Lot of 10pcs
$9.50
1x Fivre 6K7G RF IF Stage Controlling mu Pentode Tube  VT 86A CV1941 W63
1x Fivre 6K7G RF IF Stage Controlling mu Pentode Tube VT 86A CV1941 W63
$7.17
1x Fivre 6BG8G Double Diode Pentode Vacum Tube RF IF Stage Controlling mu
1x Fivre 6BG8G Double Diode Pentode Vacum Tube RF IF Stage Controlling mu
$14.41
4x EF86 Vacuum Pentode Tubes 3 Brands Tesla  RFT RWN Neuhaus
4x EF86 Vacuum Pentode Tubes 3 Brands Tesla RFT RWN Neuhaus
$37.99
1x United Electron USA 6AU5GT Beam Power Pentode Vacuum Tube  6AU5 USA
1x United Electron USA 6AU5GT Beam Power Pentode Vacuum Tube 6AU5 USA
$7.17
1x Siemens EF85 VHF Varible Mu RF IF Stage Pentode Tube  6BY7 W719 6F19 6F26
1x Siemens EF85 VHF Varible Mu RF IF Stage Pentode Tube 6BY7 W719 6F19 6F26
$8.50
1x Ei PCF200 PCF 200 Multiple Stage TV Receiver Triode Pentode Tube  8TP18
1x Ei PCF200 PCF 200 Multiple Stage TV Receiver Triode Pentode Tube 8TP18
$4.14
6J43P E Double Anode Pentode Tube Halo getter
6J43P E Double Anode Pentode Tube Halo getter
$2.15
20 X NEW 6J10B V HF miniature pentode tubes MELZ OTK 1972 PCS 20
20 X NEW 6J10B V HF miniature pentode tubes MELZ OTK 1972 PCS 20
$20.00
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
1x RFT IF860 GK36 Gold Plated Pin Pentode Vacuum Tube Same Code
1x RFT IF860 GK36 Gold Plated Pin Pentode Vacuum Tube Same Code
$9.99
2J27P 227 Russian Military Grade Pentode 120Mhz Tube NIB
2J27P 227 Russian Military Grade Pentode 120Mhz Tube NIB
$2.17
6EH7  EF183 HF Pentode Tubes 6K13P Price for 10
6EH7 EF183 HF Pentode Tubes 6K13P Price for 10
$8.80
2 x PHILIPS SQ 18042  6086 Vintage Vacuum Pentode Tubes NEW
2 x PHILIPS SQ 18042 6086 Vintage Vacuum Pentode Tubes NEW
$6.99
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
$7.99
PAIR TELEFUNKEN PHILIPS AF3 VACUUM PENTODE TUBE VERY STRONG TESTED 9 8mA
PAIR TELEFUNKEN PHILIPS AF3 VACUUM PENTODE TUBE VERY STRONG TESTED 9 8mA
$19.99
VALVO AL4 VINTAGE VACUUM PENTODE TUBE STRONG TESTED 30mA
VALVO AL4 VINTAGE VACUUM PENTODE TUBE STRONG TESTED 30mA
$14.99
VALVO EL12 VINTAGE VACUUM PENTODE TUBE STRONG TESTED 60mA
VALVO EL12 VINTAGE VACUUM PENTODE TUBE STRONG TESTED 60mA
$9.99
1 EBL21 EBL 21 Double Diode Pentode Power Output Tube
1 EBL21 EBL 21 Double Diode Pentode Power Output Tube
$2.00
2x GU 15 Pentode Tubes NOS OTK Soviet USSR Tubes Lot of 2pcs NEW
2x GU 15 Pentode Tubes NOS OTK Soviet USSR Tubes Lot of 2pcs NEW
$42.00
25 PCS 6J5B V 65  RUSIAN MINIATURE TUBE HF PENTODE MILITARY
25 PCS 6J5B V 65 RUSIAN MINIATURE TUBE HF PENTODE MILITARY
$24.00
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
6AH6 Pentode Tubes Russian 6J5P Lot of 2
6AH6 Pentode Tubes Russian 6J5P Lot of 2
$3.40
10x 6J43P E Soviet USSR HF pentode tube Lot of 10pcs
10x 6J43P E Soviet USSR HF pentode tube Lot of 10pcs
$11.00
6EJ7 EF184 Pentode Russian 6J51P Tube
6EJ7 EF184 Pentode Russian 6J51P Tube
$1.85
6J2P EV Military grade 6AS6 5725 6F36 HF baby pentode tube NIB
6J2P EV Military grade 6AS6 5725 6F36 HF baby pentode tube NIB
$1.70
6AF9  EFL200  6Y9 Double Pentode Tube
6AF9 EFL200 6Y9 Double Pentode Tube
$1.80
31 x 1j37B  Subminiature pentode adder Soviet Tubes QTY31
31 x 1j37B Subminiature pentode adder Soviet Tubes QTY31
$32.00
40 X NEW 6J5B V HF miniature pentode tubes OTK PCS 40
40 X NEW 6J5B V HF miniature pentode tubes OTK PCS 40
$36.00
3 X GK 71 RS471 PENTODE GRAFITE PLATE 3 TUBES
3 X GK 71 RS471 PENTODE GRAFITE PLATE 3 TUBES
$63.00
E180F  6688 Pentode Tube Russian 6J9P
E180F 6688 Pentode Tube Russian 6J9P
$2.00
6F1P 6AX8 ECF80 Russian Triode Pentode Tubes NOS Lot of 2pcs
6F1P 6AX8 ECF80 Russian Triode Pentode Tubes NOS Lot of 2pcs
$4.25
1 x NEW MINIWATT DARIO UCL82 Vintage Triode Pentode Tubes NOS
1 x NEW MINIWATT DARIO UCL82 Vintage Triode Pentode Tubes NOS
$7.99
TELEFUNKEN DRP EF12 Vintage Vacuum Pentode Tube VERY STRONG TEST
TELEFUNKEN DRP EF12 Vintage Vacuum Pentode Tube VERY STRONG TEST
$29.99
Beam pentode tube 6550 topside getter NOS KT88 tested +socket
Beam pentode tube 6550 topside getter NOS KT88 tested +socket
$35.00
1J29B V 1Zh29B V Qty35 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
1J29B V 1Zh29B V Qty35 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
$23.45
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
E180F  6688 Pentode Tubes Russian 6J9P Lot of 4
E180F 6688 Pentode Tubes Russian 6J9P Lot of 4
$7.48
Matched pair 6P14P EV EL84M 6BQ5 7189 Gold Grid Audiophile Pentode Tubes NOS
Matched pair 6P14P EV EL84M 6BQ5 7189 Gold Grid Audiophile Pentode Tubes NOS
$27.99
OG9387 Vintage Sylvania High Frequency Pentode Vacuum Tube 6AK5 EF95
OG9387 Vintage Sylvania High Frequency Pentode Vacuum Tube 6AK5 EF95
$1.29
RARE Military Russian Pentode Tubes Tube 12Zh1L 5pcs
RARE Military Russian Pentode Tubes Tube 12Zh1L 5pcs
$7.95
10x 1J18B RUSIAN MINIATURE TUBE HF PENTODE 1SH18B 10pcs
10x 1J18B RUSIAN MINIATURE TUBE HF PENTODE 1SH18B 10pcs
$8.75
OG9422 Vintage GE Pentode RF IF Amp Vacuum Tube 6AK5 EF95
OG9422 Vintage GE Pentode RF IF Amp Vacuum Tube 6AK5 EF95
$1.07
6AH6 Pentode Tubes Russian 6J5P Lot of 4
6AH6 Pentode Tubes Russian 6J5P Lot of 4
$6.50
6P15P EV EL83 SV83 pentode tubes Lot of 50 pc NOS NIB
6P15P EV EL83 SV83 pentode tubes Lot of 50 pc 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
6J10P ER Russian Tubes Pentode Lot of 50 pcs NOS NIB
6J10P ER Russian Tubes Pentode Lot of 50 pcs NOS NIB
$49.95
6J2P EV 5725 6AS6 Pentode Tubes NEW NOS NIB 100 pcs
6J2P EV 5725 6AS6 Pentode Tubes NEW NOS NIB 100 pcs
$54.99
JRC 3P41 Transmitting Tube Tetrode or Pentode
JRC 3P41 Transmitting Tube Tetrode or Pentode
$201.60
4x GU 50 LS50 Soviet Pentode Tubes Lot of 4 Tube NOS
4x GU 50 LS50 Soviet Pentode Tubes Lot of 4 Tube NOS
$18.75
6SH7 Sharp Cutoff Pentode Tube Russian 6J3
6SH7 Sharp Cutoff Pentode Tube Russian 6J3
$3.85
Svetlana 12J1L HF 200MHz Pentode Tubes Lot of 4
Svetlana 12J1L HF 200MHz Pentode Tubes Lot of 4
$6.80
Pentode 06P2B  XFW40 Tube lamp USSR Lot of 1pcs
Pentode 06P2B XFW40 Tube lamp USSR Lot of 1pcs
$11.90
Pentode 6V1P Tube lamp USSR Lot of 4 pcs
Pentode 6V1P Tube lamp USSR Lot of 4 pcs
$9.35
High frequency pentode 6J20P Tube lamp USSR Lot of 3 pcs
High frequency pentode 6J20P Tube lamp USSR Lot of 3 pcs
$8.50
6AJ7 Pentode Tube
6AJ7 Pentode Tube
$1.85
TESTED GU 81M HIGH POWER 750W 50MHz PENTODE HAM TRANSMITTING GENERATOR TUBE
TESTED GU 81M HIGH POWER 750W 50MHz PENTODE HAM TRANSMITTING GENERATOR TUBE
$59.00
6B8 Double Diode + Pentode Tubes Lot of 4
6B8 Double Diode + Pentode Tubes Lot of 4
$11.95
6K13P 613 Russian High Frequency Pentode Tube NOS 6K13PEF1836EH7
6K13P 613 Russian High Frequency Pentode Tube NOS 6K13PEF1836EH7
$0.99
9 PIECES NOS NIB TUBES 25C6G TYPE 25C6 G GREEN LEAF PENTODE AMAZING COLLECTION
9 PIECES NOS NIB TUBES 25C6G TYPE 25C6 G GREEN LEAF PENTODE AMAZING COLLECTION
$254.99
ADZAM E80CF SQ Vintage Triode Pentode Tubes Gold Pin STRONG TESTED
ADZAM E80CF SQ Vintage Triode Pentode Tubes Gold Pin STRONG TESTED
$11.99
2 x 6P15P  EL83 RUSSIAN VACUUM PENTODE TUBES NOS MATCHED DATE CODE
2 x 6P15P EL83 RUSSIAN VACUUM PENTODE TUBES NOS MATCHED DATE CODE
$9.00
1 Nos Vacuum Tube 1S5 Diode Cut Off Pentode valve National Union
1 Nos Vacuum Tube 1S5 Diode Cut Off Pentode valve National Union
$10.00
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
$32.23
27 X 6R4P Russian HF DUBLE PENTODE tube SAME DATTE 1991 10 PINS PCS 27
27 X 6R4P Russian HF DUBLE PENTODE tube SAME DATTE 1991 10 PINS PCS 27
$26.00
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
1x Adzam ECF80 Triode Pentode Frequency Converter Tube  CV5215 6BL8 6C16 61
1x Adzam ECF80 Triode Pentode Frequency Converter Tube CV5215 6BL8 6C16 61
$11.11
20 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY
20 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY
$12.00
TESTED 50 X 12j1l RV12P2000 HF 200MHz Pentode tubes C same date1988 50 pcs
TESTED 50 X 12j1l RV12P2000 HF 200MHz Pentode tubes C same date1988 50 pcs
$49.00
6K7 Pentode Tubes  VT86 CV1942 Svetlana 70s Set of 4
6K7 Pentode Tubes VT86 CV1942 Svetlana 70s Set of 4
$12.25
6B8 Double Diode + Pentode Tube
6B8 Double Diode + Pentode Tube
$3.95
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
2x GK 71 tube RS471 Pentode Ulyanovsk USSR Soviet Lot of 2pcs NEW
2x GK 71 tube RS471 Pentode Ulyanovsk USSR Soviet Lot of 2pcs NEW
$42.00
VACUUM TUBE RUSSIAN 6X15 TETRODE  PENTODE  RECEIVER TV RADIO BINW4 05
VACUUM TUBE RUSSIAN 6X15 TETRODE PENTODE RECEIVER TV RADIO BINW4 05
$8.01
VACUUM TUBE RUSSIAN 8505 TETRODE  PENTODE  RECEIVER TV RADIO BINW4 06
VACUUM TUBE RUSSIAN 8505 TETRODE PENTODE RECEIVER TV RADIO BINW4 06
$8.01
3 X Russian 6J9P  E180  6688 PENTODE tubes PCS 3
3 X Russian 6J9P E180 6688 PENTODE tubes PCS 3
$4.00
6J3P Tube 6AG5  EF96 Pentode
6J3P Tube 6AG5 EF96 Pentode
$1.90
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
6J3P Tubes 6AG5  EF96 Pentode Reflector plant NOS NIB
6J3P Tubes 6AG5 EF96 Pentode Reflector plant NOS NIB
$2.40
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
Victoreen 7234 Vacuum Electron Pentode Tube NOS
Victoreen 7234 Vacuum Electron Pentode Tube NOS
$19.95
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
$40.50
2 PIECES NOS NIB PHILIPS 7558 POWER PENTODE AMPLIFIER TUBES MATCHED VINTAGE MINT
2 PIECES NOS NIB PHILIPS 7558 POWER PENTODE AMPLIFIER TUBES MATCHED VINTAGE MINT
$127.49
20 PCS 1J18B 118 RUSIAN MINIATURE TUBE HF PENTODE MILITARY
20 PCS 1J18B 118 RUSIAN MINIATURE TUBE HF PENTODE MILITARY
$18.00
Lamp tube 6R4P HF Double Pentode USSR Lot of 4 psc
Lamp tube 6R4P HF Double Pentode USSR Lot of 4 psc
$5.10
1x RFT EL84 Thermionic Power Pentode Tube Guitar Audio  6BQ5 6P15 CV2975 N709
1x RFT EL84 Thermionic Power Pentode Tube Guitar Audio 6BQ5 6P15 CV2975 N709
$15.15
6GH8A Sylvania Triode Pentode Vacuum Tube
6GH8A Sylvania Triode Pentode Vacuum Tube
$5.00
TELEFUNKEN EL11 VINTAGE VACUUM PENTODE TUBE FULL TESTED 36mA 100
TELEFUNKEN EL11 VINTAGE VACUUM PENTODE TUBE FULL TESTED 36mA 100
$29.99
6SK7 Metal Tube 6137 Remote Cutoff Pentode
6SK7 Metal Tube 6137 Remote Cutoff Pentode
$2.95
1J29B V 1Zh29B V Qty44 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
1J29B V 1Zh29B V Qty44 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
$29.10
10x 6J38P EV PENTODE USSR TUBE NOS LOT OF Soviet tube 10 PCS
10x 6J38P EV PENTODE USSR TUBE NOS LOT OF Soviet tube 10 PCS
$9.00
EF91 6AM6 PHILIPS PENTODE TUBE NOS in BOX
EF91 6AM6 PHILIPS PENTODE TUBE NOS in BOX
$7.73
2 X GU 81M HIGH POWER 750W 50MHz PENTODE HAM TRANSMITTING GENERATOR TUBE PCS 2
2 X GU 81M HIGH POWER 750W 50MHz PENTODE HAM TRANSMITTING GENERATOR TUBE PCS 2
$118.00
NEW GU 81m 4pcs GU81 GU 81 750W 50MHz PENTODE TUBE NOS
NEW GU 81m 4pcs GU81 GU 81 750W 50MHz PENTODE TUBE NOS
$120.00


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