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 Used in satellite earth stations that have been replaced by the TWTs.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

2x Siemens EL84 Output Pentode Vacuum Tube Penthode De Sorite Endpentode
2x Siemens EL84 Output Pentode Vacuum Tube Penthode De Sorite Endpentode
$52.95
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
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
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1980
2 X GK 71 RS471 PENTODE GRAFITE PLATE 2 TUBES 1980
$42.00
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
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
6EH7  EF183 HF Pentode Tubes 6K13P Lot of 10
6EH7 EF183 HF Pentode Tubes 6K13P Lot of 10
$6.92
20 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY
20 PCS 1J29B V 1J29B RUSIAN MINIATURE TUBE HF PENTODE MILITARY
$12.00
3 X Russian 6J9P  E180  6688 PENTODE tubes PCS 3
3 X Russian 6J9P E180 6688 PENTODE tubes PCS 3
$4.00
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
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
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
$12.99
FUNKWERK EF12 Vintage Vacuum Pentode Tube Tested
FUNKWERK EF12 Vintage Vacuum Pentode Tube Tested
$14.99
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
2 x NEW RFT UCL82 Vintage Triode Pentode Tubes NOS
$7.99
2pcs x 10J12SWE310A Audiophile Pentode Tubes Svetlana 1970s NOS Tested
2pcs x 10J12SWE310A Audiophile Pentode Tubes Svetlana 1970s NOS Tested
$60.00
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
1 NOS rare GEC A2266 CV2231 PULSE PENTODE VACCUM TUBE VALVE
1 NOS rare GEC A2266 CV2231 PULSE PENTODE VACCUM TUBE VALVE
$17.99
4 Nos Valvo DAF91 Vacuum Tube 1S5 ZD17 1B2 1S5 1FD9 Diode Cut Off Pentode valve
4 Nos Valvo DAF91 Vacuum Tube 1S5 ZD17 1B2 1S5 1FD9 Diode Cut Off Pentode valve
$24.99
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
$5.40
2 x VALVO E280F RED PRINT Vacuum Pentode Tubes Gold Pin STRONG
2 x VALVO E280F RED PRINT Vacuum Pentode Tubes Gold Pin STRONG
$35.00
6GH8A Sylvania Triode Pentode Vacuum Tube
6GH8A Sylvania Triode Pentode Vacuum Tube
$5.00
EF91 6AM6 PHILIPS PENTODE TUBE NOS in BOX
EF91 6AM6 PHILIPS PENTODE TUBE NOS in BOX
$7.73
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
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
$9.00
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
1 Nos 1957 British Military Tube Gec A2266 Cv2231 Pulse Pentode Vacuum Valve
1 Nos 1957 British Military Tube Gec A2266 Cv2231 Pulse Pentode Vacuum Valve
$19.99
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
NOS NIB 100x C3m Siemens made in Germany Audio Tube
NOS NIB 100x C3m Siemens made in Germany Audio Tube
$2,000.00
1x RFT IL861 DuoDiode Regelpentode Power Output Pentode Vacuum Tube Gold Plate
1x RFT IL861 DuoDiode Regelpentode Power Output Pentode Vacuum Tube Gold Plate
$5.95
6K7 Tube Russian Svetlana Pentode VT86 CV1942 70s
6K7 Tube Russian Svetlana Pentode VT86 CV1942 70s
$3.95
4x 4P1L 4LS1 RL2 4P6 Russian Direct Heated Pentode Tubes Svetlana NOS Tested
4x 4P1L 4LS1 RL2 4P6 Russian Direct Heated Pentode Tubes Svetlana NOS Tested
$24.00
50x 4P1L 4LS1 RL2 Russian Direct Heated Pentode Tubes Svetlana 1960s NOS NIB
50x 4P1L 4LS1 RL2 Russian Direct Heated Pentode Tubes Svetlana 1960s NOS NIB
$300.00
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
9 X GK 71 RS471 PENTODE GRAFITE PLATE 125W Same date 1978 9 TUBES
9 X GK 71 RS471 PENTODE GRAFITE PLATE 125W Same date 1978 9 TUBES
$198.00
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
$3.99
1x 6J1P 61  E95F 6AK7 6F32 Tube HF Pentode Soviet USSR Russian NOS
1x 6J1P 61 E95F 6AK7 6F32 Tube HF Pentode Soviet USSR Russian NOS
$1.99
PUROTRON 42  UZ 42  6Z P1 Vintage Vacuum Pentode Tube TESTED
PUROTRON 42 UZ 42 6Z P1 Vintage Vacuum Pentode Tube TESTED
$15.00
2 x VALVO E80F Audio Vacuum Pentode Tube Gold Pin STRONG Test
2 x VALVO E80F Audio Vacuum Pentode Tube Gold Pin STRONG Test
$30.00
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
4 x ZAERIX ECF80 Vintage Triode Pentode Tubes NEW
$9.99
TESLA EL34 Vintage Vacuum Pentode Tubes Tested  Brown Base
TESLA EL34 Vintage Vacuum Pentode Tubes Tested Brown Base
$39.99
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
$4.44
1J29B V 1Zh29B V Qty7 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
1J29B V 1Zh29B V Qty7 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
$5.45
1x Vintage 60s EF14 RFT Vacuum Pentode RF IF Stage TUBE
1x Vintage 60s EF14 RFT Vacuum Pentode RF IF Stage TUBE
$33.99
1x EBL21 Vintage TESLA Double Diode Pentode Power Output TUBE  EBL71  PDD2
1x EBL21 Vintage TESLA Double Diode Pentode Power Output TUBE EBL71 PDD2
$8.49
1x Tesla EL83 Vacuum Pentode Power Output Tube 6CK6
1x Tesla EL83 Vacuum Pentode Power Output Tube 6CK6
$6.56
1x Siemens F80U Radio Valve Pentode Vacuum Tube
1x Siemens F80U Radio Valve Pentode Vacuum Tube
$5.99
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
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 6P18P Pentode Output TUBE EL82 tube Saratov 1987
Lot of 2 6P18P Pentode Output TUBE EL82 tube Saratov 1987
$3.00
Lot of 4 6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
Lot of 4 6BY7 EF85 6K13P Soviet Pentode tubes Vinitsa 1988
$5.00
1matched pair NEW NOS 6J7G Sylvania Amplitrex AT1000 Audio Amplifier Tube
1matched pair NEW NOS 6J7G Sylvania Amplitrex AT1000 Audio Amplifier Tube
$145.00
6J2B V HF pentode tubes Lot of 8 pc NOS
6J2B V HF pentode tubes Lot of 8 pc NOS
$8.00
TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
$19.99
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
MATCHED PAIR 2 x TELEFUNKEN E280F Vacuum Pentode Tubes Gold Pin STRONG
MATCHED PAIR 2 x TELEFUNKEN E280F Vacuum Pentode Tubes Gold Pin STRONG
$29.99
TELEFUNKEN EF12 Vintage Vacuum Pentode Tube TESTED
TELEFUNKEN EF12 Vintage Vacuum Pentode Tube TESTED
$22.99
TUNGSRAM UF9  MUF9 Vintage Vacuum Pentode Tube  NEW
TUNGSRAM UF9 MUF9 Vintage Vacuum Pentode Tube NEW
$9.99
FUNKWERK SRS 552N Vintage Transmitting Pentode Tube
FUNKWERK SRS 552N Vintage Transmitting Pentode Tube
$9.99
2 x TELEFUNKEN VALVO PCF86 Vintage Triode Pentode Tubes
2 x TELEFUNKEN VALVO PCF86 Vintage Triode Pentode Tubes
$9.99
TELEFUNKEN EL12 Spez Vintage Vacuum Pentode Tube TEST 100
TELEFUNKEN EL12 Spez Vintage Vacuum Pentode Tube TEST 100
$79.99
RARE VALVO AL5 Vintage Vacuum Pentode Tube with Metal Base 100 TEST 72mA
RARE VALVO AL5 Vintage Vacuum Pentode Tube with Metal Base 100 TEST 72mA
$29.99
2 x ADZAM E80CF SQ Vintage Triode Pentode Tubes NEW
2 x ADZAM E80CF SQ Vintage Triode Pentode Tubes NEW
$29.99
6J49P DRY HF Pentode Gold Pins tubes Lot of 4 NOS
6J49P DRY HF Pentode Gold Pins tubes Lot of 4 NOS
$29.99
6J49P DRY HF Pentode Gold Pins tubes Lot of 8 NOS
6J49P DRY HF Pentode Gold Pins tubes Lot of 8 NOS
$69.99
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
$399.99
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
GU50 HAM Audiophile Output Pentode Tube
GU50 HAM Audiophile Output Pentode Tube
$5.95
6J7G GEC made in GtBritian Amplitrex AT1000 Audio Amplifier Tube
6J7G GEC made in GtBritian Amplitrex AT1000 Audio Amplifier Tube
$90.00
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
$19.99
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
1J29B V 1Zh29B V Qty15 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
1J29B V 1Zh29B V Qty15 Small Miniature Tube HF Pentode Military 1J29B Russia SQ
$14.13
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
1J37B Russian miniature pentode Tubes NOS one or more
1J37B Russian miniature pentode Tubes NOS one or more
$1.00
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
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
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
Victoreen 7234 Vacuum Electron Pentode NOS Tube Radio
Victoreen 7234 Vacuum Electron Pentode NOS Tube Radio
$19.95
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
$7.90
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 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 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 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
1 X Russian duble diode + pentode detectore tube 6B8 1 PCS 1963
1 X Russian duble diode + pentode detectore tube 6B8 1 PCS 1963
$9.00


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