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 Used in satellite earth stations that have been replaced by the TWTs.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

GU 81M High Power 750W 50MHz Generating Pentode USSR Soviet NOS Tube
GU 81M High Power 750W 50MHz Generating Pentode USSR Soviet NOS Tube
$48.00
6AK5  EF95 VHF Pentode tubes Russian 6J1P Lot of 5
6AK5 EF95 VHF Pentode tubes Russian 6J1P Lot of 5
$9.95
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
2 X PL36 25E5 25F7 TUNGSRAM pentode tubes PCS 2
$9.00
1x Russian 6N6P Low Noise Pentode Vacuum Tube Made in USSR NEW NOS
1x Russian 6N6P Low Noise Pentode Vacuum Tube Made in USSR NEW NOS
$5.50
4 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
4 x 6F12P TUBES TRIODE PENTODE HF WIDE BAND NEW PERFECT
$7.99
40pcs x 6P14PEL8471896BQ5 Reflector Audiophile Pentode Tubes Used Tested
40pcs x 6P14PEL8471896BQ5 Reflector Audiophile Pentode Tubes Used Tested
$60.00
8pcs x 6P14PEL8471896BQ5 Reflector Audiophile Pentode Tubes Used Tested
8pcs x 6P14PEL8471896BQ5 Reflector Audiophile Pentode Tubes Used Tested
$16.00
2x GK 71 Russian 125W Power Pentode Generator Transmitter Tube NOS Tested
2x GK 71 Russian 125W Power Pentode Generator Transmitter Tube NOS Tested
$30.00
12pc 6J38P HF pentode tube USSR Military for audio NEW
12pc 6J38P HF pentode tube USSR Military for audio NEW
$19.00
NOS NIB 100x C3m Siemens made in Germany Audio Tube
NOS NIB 100x C3m Siemens made in Germany Audio Tube
$2,000.00
2 Used RCA 803 Ceramic Base RF Power Amplifier Pentode Tube N R
2 Used RCA 803 Ceramic Base RF Power Amplifier Pentode Tube N R
$19.99
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
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 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
$2.52
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
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
1x EBL21 EBL 21 TELAM Double Diode Pentode Power Output TUBE  EBL71  PDD2
1x EBL21 EBL 21 TELAM Double Diode Pentode Power Output TUBE EBL71 PDD2
$10.19
1x EBL21 EBL 21 TUNGSRAM Double Diode Pentode Power Output TUBE  EBL71  PDD2
1x EBL21 EBL 21 TUNGSRAM Double Diode Pentode Power Output TUBE EBL71 PDD2
$11.89
1x Vintage 60s EF14 RFT Vacuum Pentode RF IF Stage TUBE
1x Vintage 60s EF14 RFT Vacuum Pentode RF IF Stage TUBE
$33.99
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
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
2x 6B8 Double Diode Pentode RF IF Stage Controlling mu Tube
$3.99
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
2 x VALVO E81L Vintage Vacuum Pentode Tubes Gold Pin NEW
$14.00
1x Tesla EL83 Vacuum Pentode Power Output Tube 6CK6
1x Tesla EL83 Vacuum Pentode Power Output Tube 6CK6
$3.56
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
FUNKWERK EF12 Vintage Vacuum Pentode Tube Tested
FUNKWERK EF12 Vintage Vacuum Pentode Tube Tested
$14.99
6J2B V HF pentode tubes Lot of 8 pc NOS
6J2B V HF pentode tubes Lot of 8 pc NOS
$8.00
MATCHED PAIR TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
MATCHED PAIR TELEFUNKEN EF13 Vintage Vacuum Pentode Tube TESTED
$40.00
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
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
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
20x GU 50 LS 50 P50 FU 50 Russian 50W Power Pentode Tubes NOS Tested
20x GU 50 LS 50 P50 FU 50 Russian 50W Power Pentode Tubes NOS Tested
$75.00
4x GU 50 LS 50 P50 FU 50 Russian 50W Power Pentode Tubes NOS Tested
4x GU 50 LS 50 P50 FU 50 Russian 50W Power Pentode Tubes NOS Tested
$16.00
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
$20.00
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
RARE RUSSIAN MILITARY 6J4 6AC7 6AJ7 SUBMARINE PENTODE TUBE VALVE 1952y
RARE RUSSIAN MILITARY 6J4 6AC7 6AJ7 SUBMARINE PENTODE TUBE VALVE 1952y
$9.00
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
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
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
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
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
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
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
6J43P E Double Anode Pentode Tubes Halo getter 4pcs
$7.90
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
5 X Russian 6J4 6AU6 EF94 HF pentode tubes 5 PCS 1960s
5 X Russian 6J4 6AU6 EF94 HF pentode tubes 5 PCS 1960s
$6.00
6AF9  EFL200  6Y9 Double Pentode Tubes Lot of 4
6AF9 EFL200 6Y9 Double Pentode Tubes Lot of 4
$6.80
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 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 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 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 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
12SG7 RF IF Pentode tube Russian 12K4 Vintage 1965
12SG7 RF IF Pentode tube Russian 12K4 Vintage 1965
$3.85
4x EF86 Vacuum Pentode Tubes 3 Brands Tesla  RFT RWN Neuhaus
4x EF86 Vacuum Pentode Tubes 3 Brands Tesla RFT RWN Neuhaus
$37.99
6EH7  EF183 HF Pentode Tube 6K13P
6EH7 EF183 HF Pentode Tube 6K13P
$0.99
6J43P E Double Anode Pentode Tube Halo getter
6J43P E Double Anode Pentode Tube Halo getter
$2.15
1x RFT IF860 GK36 Gold Plated Pin Pentode Vacuum Tube Same Codes
1x RFT IF860 GK36 Gold Plated Pin Pentode Vacuum Tube Same Codes
$9.99
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
2J27P 227 Russian Military Grade Pentode 120Mhz Tube NIB
2J27P 227 Russian Military Grade 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
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
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
$12.12
6AH6 Pentode Tubes Russian 6J5P Lot of 2
6AH6 Pentode Tubes Russian 6J5P Lot of 2
$3.40
6EJ7 EF184 Pentode Russian 6J51P Tube
6EJ7 EF184 Pentode Russian 6J51P Tube
$1.85
6AF9  EFL200  6Y9 Double Pentode Tube
6AF9 EFL200 6Y9 Double Pentode Tube
$1.80
3 X GK 71 RS471 PENTODE GRAFITE PLATE 3 TUBES
3 X GK 71 RS471 PENTODE GRAFITE PLATE 3 TUBES
$63.00
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
1 x NEW MINIWATT DARIO UCL82 Vintage Triode Pentode Tubes NOS
1 x NEW MINIWATT DARIO UCL82 Vintage Triode Pentode Tubes NOS
$7.99
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
RAYTHEON VACUUM TUBE CK512AX PENTODE
RAYTHEON VACUUM TUBE CK512AX PENTODE
$19.00
SYLVANIA VACUUM TUBE 6BZ6 TRIODE PENTODE
SYLVANIA VACUUM TUBE 6BZ6 TRIODE PENTODE
$19.00


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