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 Used in satellite earth stations that have been replaced by the TWTs.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

6AK5  EF95 VHF Pentode tubes Russian 6J1P Lot of 5
6AK5 EF95 VHF Pentode tubes Russian 6J1P Lot of 5
$9.95
4 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
4 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
$7.99
6P15P ER USSR Pentode tubes equiv of EL83  SV83 Lot of 4
6P15P ER USSR Pentode tubes equiv of EL83 SV83 Lot of 4
$16.00
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
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
$9.99
MATCHED PAIR 2 x TELEFUNKEN E280F Vacuum Pentode Tubes Gold Pin STRONG
MATCHED PAIR 2 x TELEFUNKEN E280F Vacuum Pentode Tubes Gold Pin STRONG
$32.99
SIEMENS E282F Vintage Vacuum Pentode Tube UHF STRONG TESTED
SIEMENS E282F Vintage Vacuum Pentode Tube UHF STRONG TESTED
$14.99
TELEFUNKEN EF12 Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN EF12 Vintage Vacuum Pentode Tube TESTED
$22.99
TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
$44.99
TELEFUNKEN LV1 Vintage WEHRMACHT Vacuum Pentode Tube + Socket
TELEFUNKEN LV1 Vintage WEHRMACHT Vacuum Pentode Tube + Socket
$9.99
TESLA AL4n Vintage Vacuum Pentode Tube Tested
TESLA AL4n Vintage Vacuum Pentode Tube Tested
$14.99
TUNGSRAM EL11 Vintage Vacuum Pentode Tube Tested
TUNGSRAM EL11 Vintage Vacuum Pentode Tube Tested
$19.99
TUNGSRAM HP4106  S434N  E447 Vintage Vacuum Pentode Tube
TUNGSRAM HP4106 S434N E447 Vintage Vacuum Pentode Tube
$9.99
TUNGSRAM UBL21  UBL71 Double Diode Pentode Tube NEW
TUNGSRAM UBL21 UBL71 Double Diode Pentode Tube NEW
$9.99
TUNGSRAM UF9  MUF9 Vintage Vacuum Pentode Tube  NEW
TUNGSRAM UF9 MUF9 Vintage Vacuum Pentode Tube NEW
$14.99
RARE  DARIO 4654 Vintage Vacuum Pentode Tube TESTED 60mA
RARE DARIO 4654 Vintage Vacuum Pentode Tube TESTED 60mA
$14.99
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
1J29B V Russian miniature pentode Tubes New Lot of 100
1J29B V Russian miniature pentode Tubes New Lot of 100
$99.00
1x RFT EL81 Beam Power Tube Output Pentode Line Time Base of TV
1x RFT EL81 Beam Power Tube Output Pentode Line Time Base of TV
$4.24
TESLA EL34 Vintage Vacuum Pentode Tubes Tested  Brown Base
TESLA EL34 Vintage Vacuum Pentode Tubes Tested Brown Base
$39.99
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
$9.99
2 x 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 MATCHED PAIR Audio Vacuum Pentode Tube Gold Pin Tested
2 x VALVO E80F MATCHED PAIR Audio Vacuum Pentode Tube Gold Pin Tested
$29.99
PUROTRON 42  UZ 42  6Z P1 Vintage Vacuum Pentode Tube TESTED
PUROTRON 42 UZ 42 6Z P1 Vintage Vacuum Pentode Tube TESTED
$14.99
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
$14.99
6J43P DR HF PENTODE Soviet tubes NOS ULTRA DURABLE Lot of 4
6J43P DR HF PENTODE Soviet tubes NOS ULTRA DURABLE Lot of 4
$12.00
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
$4.44
1x Tesla EL83 Vacuum Pentode Power Output Tube 6CK6
1x Tesla EL83 Vacuum Pentode Power Output Tube 6CK6
$8.58
1x Siemens F80U Radio Valve Pentode Vacuum Tube
1x Siemens F80U Radio Valve Pentode Vacuum Tube
$5.99
1matched pair NEW NOS 6J7G Sylvania Amplitrex AT1000 Audio Amplifier Tube
1matched pair NEW NOS 6J7G Sylvania Amplitrex AT1000 Audio Amplifier Tube
$145.00
2 x RFT EL34 MATCHED PAIR Vintage Vacuum Pentode Tubes Tested
2 x RFT EL34 MATCHED PAIR Vintage Vacuum Pentode Tubes Tested
$49.99
2 x TELEFUNKEN VALVO PCF86 Vintage Triode Pentode Tubes
2 x TELEFUNKEN VALVO PCF86 Vintage Triode Pentode Tubes
$9.99
1J37B Russian miniature pentode Tubes NOS Lot of 15
1J37B Russian miniature pentode Tubes NOS Lot of 15
$18.00
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
$12.99
2 x ADZAM E80CF SQ Vintage Triode Pentode Tubes NEW
2 x ADZAM E80CF SQ Vintage Triode Pentode Tubes NEW
$29.99
72 New  Used 5AT8 Medium Mu Triode Sharp Cutoff Pentode Tube N R
72 New Used 5AT8 Medium Mu Triode Sharp Cutoff Pentode Tube N R
$9.99
85 NOS 5AT8 Sharp Cutoff Pentode Tube N R
85 NOS 5AT8 Sharp Cutoff Pentode Tube N R
$9.99
TUNGSRAM EL41 Vacuum Pentode Tube NEW in box
TUNGSRAM EL41 Vacuum Pentode Tube NEW in box
$9.99
22 Used 8077 Power Pentode Tube for Use in Mobile Equipment as Amp or Osc N R
22 Used 8077 Power Pentode Tube for Use in Mobile Equipment as Amp or Osc N R
$9.99
6J2B V HF pentode tubes Lot of 8 pc NOS
6J2B V HF pentode tubes Lot of 8 pc NOS
$8.00
6J10B VR HF PENTODE  NOS subminiature tubes HIGH DURABLE Lot of 4
6J10B VR HF PENTODE NOS subminiature tubes HIGH DURABLE Lot of 4
$10.00
6J10P ER HF PENTODE tubes radiation proof made in USSR NOS Lot of 4
6J10P ER HF PENTODE tubes radiation proof made in USSR NOS Lot of 4
$9.00
6J1P E HF PENTODE tubes Russian NOS Equiv of EF95 6F32 6AK7 Lot of 8
6J1P E HF PENTODE tubes Russian NOS Equiv of EF95 6F32 6AK7 Lot of 8
$10.00
6J1P V HF PENTODE tubes from USSR NOS  Equiv of EF95 6F32 6AK7 Lot of 4
6J1P V HF PENTODE tubes from USSR NOS Equiv of EF95 6F32 6AK7 Lot of 4
$10.00
6J21P HF PENTODE Soviet tubes NOS  Equiv of EF95 6F32 6AK7 Lot of 4
6J21P HF PENTODE Soviet tubes NOS Equiv of EF95 6F32 6AK7 Lot of 4
$10.00
6J23P High Frequency PENTODE tubes made in USSR NOS  Lot of 4
6J23P High Frequency PENTODE tubes made in USSR NOS Lot of 4
$10.00
6J2P HF PENTODE USSR tubes NOS  Equiv of 6AS6 5725 Lot of 8
6J2P HF PENTODE USSR tubes NOS Equiv of 6AS6 5725 Lot of 8
$8.00
6J32B HF PENTODE USSR tubes NOS subminiature case Lot of 4
6J32B HF PENTODE USSR tubes NOS subminiature case Lot of 4
$8.00
6J38P HF PENTODE tubes Made in Soviet UNION NOS  Lot of 4
6J38P HF PENTODE tubes Made in Soviet UNION NOS Lot of 4
$8.00
6J3P HF PENTODE tubes NOS  Equiv of EF96  6AG5 Lot of 4
6J3P HF PENTODE tubes NOS Equiv of EF96 6AG5 Lot of 4
$8.00
6J3P EV HF PENTODE USSR tubes NOS  Equiv of 6BC5 6AG5 EF96 Lot of 4
6J3P EV HF PENTODE USSR tubes NOS Equiv of 6BC5 6AG5 EF96 Lot of 4
$8.00
6J46B V HF PENTODE tubes NOS subminiature Lot of 4
6J46B V HF PENTODE tubes NOS subminiature Lot of 4
$10.00
6J49P DRU HF PENTODE tubes USSR ULTRA DURABLE GOLD PINS AND GRID Lot of 2
6J49P DRU HF PENTODE tubes USSR ULTRA DURABLE GOLD PINS AND GRID Lot of 2
$14.00
6J51P HF PENTODE tubes from USSR  NOS  Equiv of 6EJ7 EF184 Lot of 4
6J51P HF PENTODE tubes from USSR NOS Equiv of 6EJ7 EF184 Lot of 4
$8.00
6J5B V HF PENTODE tubes USSR  NOS subminiature case Lot of 4
6J5B V HF PENTODE tubes USSR NOS subminiature case Lot of 4
$9.00
6J8 HF PENTODE tubes NOS metal case  Equiv of 6SJ7 GT 5693 Lot of 4
6J8 HF PENTODE tubes NOS metal case Equiv of 6SJ7 GT 5693 Lot of 4
$9.00
6J9P E HF PENTODE Russian tubes NOS  Equiv of E180F E186F EF861 Lot of 4
6J9P E HF PENTODE Russian tubes NOS Equiv of E180F E186F EF861 Lot of 4
$10.00
6K7 Tube Russian Svetlana Pentode VT86 CV1942 70s
6K7 Tube Russian Svetlana Pentode VT86 CV1942 70s
$3.95
RARE 4 x QUARTED VALVO EL6  WE14 Pentode Tubes  NEW with Metal Base  100 NOS
RARE 4 x QUARTED VALVO EL6 WE14 Pentode Tubes NEW with Metal Base 100 NOS
$479.99
2 x TELEFUNKEN EL11  AV1037  6E102 Vacuum Pentode Tubes NEW
2 x TELEFUNKEN EL11 AV1037 6E102 Vacuum Pentode Tubes NEW
$99.99
TUNGSRAM EL11  AV1037  6E102 Vacuum Pentode Tubes NEW  100 TEST
TUNGSRAM EL11 AV1037 6E102 Vacuum Pentode Tubes NEW 100 TEST
$24.99
TUNGSRAM ABL1  WE41  TABL1 Double Diode Pentode Tube NEW  100 TEST
TUNGSRAM ABL1 WE41 TABL1 Double Diode Pentode Tube NEW 100 TEST
$14.99
6 x Russian CO 257 SO257 Military Vacuum Pentode Tubes NEW  NOS
6 x Russian CO 257 SO257 Military Vacuum Pentode Tubes NEW NOS
$11.99
10 x Russian 2K2M Military Vacuum Pentode Tubes NEW  NOS
10 x Russian 2K2M Military Vacuum Pentode Tubes NEW NOS
$19.99
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
GU50 HAM Audiophile Output Pentode Tube
GU50 HAM Audiophile Output Pentode Tube
$6.95
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
Victoreen 7234 Vacuum Electron Pentode NOS Radio Tube New Lot of 2
Victoreen 7234 Vacuum Electron Pentode NOS Radio Tube New Lot of 2
$29.88
6P15P Pentode USSR tubes NOS equiv of EL83  SV83 Lot of 4
6P15P Pentode USSR tubes NOS equiv of EL83 SV83 Lot of 4
$12.00
6P15P V Pentode Soviet tubes equiv of EL83  SV83 Lot of 4
6P15P V Pentode Soviet tubes equiv of EL83 SV83 Lot of 4
$13.00
6P30B R Soviet tubes miniature Output Pentode Lot of 4
6P30B R Soviet tubes miniature Output Pentode Lot of 4
$12.00
6P43P E output pentode USSR tubes New Old stock  Lot of 4
6P43P E output pentode USSR tubes New Old stock Lot of 4
$8.00
RARE RUSSIAN MILITARY 6J4 6AC7 6AJ7 SUBMARINE PENTODE TUBE VALVE 1952y
RARE RUSSIAN MILITARY 6J4 6AC7 6AJ7 SUBMARINE PENTODE TUBE VALVE 1952y
$9.00
1x Philips EF6 Universal Pentode Tube RF and IF Amplifier  TEF6 VEF6 MEF6 6E2
1x Philips EF6 Universal Pentode Tube RF and IF Amplifier TEF6 VEF6 MEF6 6E2
$17.17
Lot of 50 4P1L4LS1RL24P6 Direct Heated Pentode Tubes 1960s Svetlana NOS NIB
Lot of 50 4P1L4LS1RL24P6 Direct Heated Pentode Tubes 1960s Svetlana NOS NIB
$300.00
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 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
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
$9.19
1x 6C6 Pentode Amplifier Audio Tube  UZ6C6 UZ 6C6 CK108 38636 W2166
1x 6C6 Pentode Amplifier Audio Tube UZ6C6 UZ 6C6 CK108 38636 W2166
$17.71
1x Fivre 6K7G RF IF Stage Controlling mu Pentode Tube  VT 86A
1x Fivre 6K7G RF IF Stage Controlling mu Pentode Tube VT 86A
$7.17
RF Pentode with the cathode grid 6J22P 7W  200MHz
RF Pentode with the cathode grid 6J22P 7W 200MHz
$4.85
6AS6 5725 6F36 HF baby Pentode Tubes Russian 6J2P
6AS6 5725 6F36 HF baby Pentode Tubes Russian 6J2P
$1.00
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
$7.90
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
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
6B8 Double Diode + Pentode Tubes Lot of 4
6B8 Double Diode + Pentode Tubes Lot of 4
$11.95
6AF9  EFL200  6Y9 Double Pentode Tubes Lot of 4
6AF9 EFL200 6Y9 Double Pentode Tubes Lot of 4
$6.80
12SG7 RF IF Pentode tube Russian 12K4 Vintage 1965
12SG7 RF IF Pentode tube Russian 12K4 Vintage 1965
$3.85
1x RFT IF860 GK36 Gold Plated Pin Pentode Vacuum Tube Same Codes
1x RFT IF860 GK36 Gold Plated Pin Pentode Vacuum Tube Same Codes
$11.11
6EH7  EF183 HF Pentode Tube 6K13P
6EH7 EF183 HF Pentode Tube 6K13P
$0.99
6J7 Metal Tube EF36 Sharp Cutoff Pentode
6J7 Metal Tube EF36 Sharp Cutoff Pentode
$2.75
6EH7  EF183 HF Pentode Tubes 6K13P Lot of 10
6EH7 EF183 HF Pentode Tubes 6K13P Lot of 10
$6.92
1P24B V Russian miniature pentode Tubes New Lot 10
1P24B V Russian miniature pentode Tubes New Lot 10
$14.00


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