TESTS CONDITIONS (datasheet) DUOVAC RADIOELEC Va=250V Vg2=265V Vg1=-13.5V Ia=100mA S=11mA/V HICKOK TV7D/U (6CA7 tube)HS5-3481 B25 D min=30 Please note that HICKOK is not a laboratory tester, though it is very well calibrated...HERE is how I calibrated mine following manual services specifications. I calibrated it to respect the low of the scale for filament... High voltage on filament would damage it...but gives higher values...0.6 (065-0.72) -->0.65V ; 1.1 (1.06-1.16) -->1.14V ; 1.5 (1.26-1.42) -->1.30V ; 2.0 (1.90-2.10) -->1.95V ; 2.5 (2.56-2.88) -->2.77V ; 3.0 (3.25-3.60) -->3.25V ; 4.3 (4.30-4.75) -->4.55V ; 5.0 (5.15-5.68) -->5.49V ; 6.3 (6.20-6.80) -->6.47V ; 7.5 (7.32-8.10) -->7.45V ; 10 (9.60-10.80) -->10.03V ; 12.6 (12.1-13.3) -->12.25V ; 20 (19.0-21.0) -->20.50V ; 25 (25.3-28.0) -->27.65V ; 35 (35.2-39.0) -->38.09V ; 50 (51.5-57.0) -->52.80V ; 75 (74.0-82.0) -->74.82V ; 117 (115-127) -->116.5VIf needed, i can share all other tests calibrations I get (129.5V/130V +o-3V ; 41.35V/40V +o-2V ; 4.21V/4V +o-1V ; 56.5V /56V....) TESLA DOUBLE SUPERPOSED RING GETTER U FINS BLACK BASE 10 SPIKES TOP MICA NO SPIKES BOTTOM MICA 97mA/86mA S=11 94mA/83mA S=11 47 47 EUROPE COUNTRIES --> ASK FOR MONDIAL RELAY SERVICE

=°=Clic ? Mes autres ventes, all my listings >> see my other sales << 2x EL34 TESLA voir photos, see photos and read all !Test results n°1 & n°2 ? B&K747B (GM) 103 % & 106 %(Mostly new EL34 test 110%+ on this tester)------Metrix 310B : Vp: 250V / Vg2: 250V / Vg1: -13,5V (GM) ? 11 mA/V & 11.5 mA/v (nominal 11)matched I plates result: ? 78 mA & 77 mA (expected 100)------B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test. Good range of the meter scale in % transconductance starts at 65 up to 120Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction. + PLEASE CHECK OUT MY OTHER AUCTIONS FOR MORE TUBES + Réduction sur la livraison dachats groupés en FRANCE: même prix de port, le plus élevé, quel que soit le nombre dobjets achetés, alors consultez mes autres ventes, MERCI. Envoi soigné garanti - Nhésitez pas à me contacter pour tout renseignement avant denchérir. idem en cas de problème ou derreur dans la description: communiquez, Errare humanum est... *****foreign buyers please note***** I always package my items with care to help insure they will arrive to you safelyYES, I really do combine shipping if you win more than one auction, to save you money on shipping: Please ask all questions before bidding and I will be happy to answer If a problem arises contact me and Ill try to fix the problem, Errare humanum est....

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% tests NOS, cannot verify if they are genuine nos 52.7/30 PC= 43.6 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

Ein Ip and gm matched quad EL34 Tesla, OO-Getter. Alle Röhren wurden exakt nach Hersteller geprüft bei Anodenspannung 250V, Schirmgitterspannung 265V und Steuergitterspannung -13,5V, bzw. nach Mullard bei 250V;250V;-12,2V.Beide Male sind 100mA Anodenstrom und 11mA/V Steilheit gleich 100%.Auf dem Röhrensockel ist der erste Wert der Anodenstrom in mA, der zweite Wert die Steilheit in mA/V.Nach der Steilheit beurteilt hat dieses Quartett 105+% von 100% neu.Die Röhren haben keine Gitteremission und ein intaktes Vakuum.Die EL34 spielten zum Test in meinem PP Verstärker (AB Betrieb nach Mullard mit Ub=430V) einwandfrei.Die Grenzwerte der EL34 sind unbedingt zu beachten (kein KT88 Arbeitspunkt).Der Prüfwert Anodenstrom wurde mit stabilisierten Spannungen für Anode, Schirmgitter, Steuergitter und Heizung, die unmittelbar am Röhrensockel mit Multimetern kontrolliert wurden, ermittelt. Er stellt somit den tatsächlichen Zustand der Röhren dar und keinen Fantasiewert von alten Röhrenprüfgeräten. Die Steilheit wurde dynamisch ermittelt.Vorletztes Bild Anoden- und Schirmgitterstrom einer EL34, letztes Bild Steilheit 1:10 (bei Ue=1V~ über 100Ohm Anodenwiderstand). One Ip and gm matched quad EL34 Tesla, OO-getter. All tubes were tested exactly according to the manufacturer with plate voltage 250V, screen grid voltage 265V and control grid voltage -13.5V, or according to Mullard at 250V;250V;-12.2V.oth times 100mA plate current and 11mA/V transconductance is 100%.On the tube base, the first value is the plate current in mA, the second value is gm in mA/V.Judging by the gm, this quartet has 105+% from 100+% new.The tubes have no grid emission and an intact vacuum. The EL34 as a test played flawlessly in my PP amplifier (AB operation according to Mullard with Ub=430V).The limit values of the EL34 must be observed (no KT88 working point).The plate current test value was determined with stabilized voltages for the plate, screen grid, control grid and heating, which were checked directly on the tube base with multimeters. It therefore represents the actual condition of the tubes and not an imaginary value from old tube testers. The transconductance was determined dynamically.Penultimate picture plate and screen grid current of an EL34, last picture gm 1:10 (at Ue=1V~ over 100Ohm Plate resistance).

Tube Valvo EL34 with DD Getter and good Values. The Code is: XF3 X9D. You can not see the Company on the Glas. The items are shipped with German Post. 12M

Elektronenröhre Tesla El34L Und El34 Mit Defekt Je PC Total St.Set / Sammlung OpDas Datenblatt dieses Produkts wurde ursprünglich auf Englisch verfasst. Unten finden Sie eine automatische Übersetzung ins Deutsche. Sollten Sie irgendwelche Fragen haben, kontaktieren Sie uns.ZahlungSeien Sie versichert, dass unser Shop eine Vielzahl von Zahlungsmethoden anbietet.Bitte zahlen Sie innerhalb von 5 Tagen nach Auktionsende.Über unsWir befinden uns in Japan. Überprüfen Sie für elektrische Produkte den Hersteller und das Produkt und rechnen Sie die Spannung in das jeweilige Land um. Wir planen den Versand per FedEx oder DHL. Bitte kontaktieren Sie uns, da sich die Versandkosten in einigen Fällen ändern können. Es ist uns eine Freude, Sie glücklich zu machen, indem wir Ihnen unseren empfohlenen Artikel vorschlagen.Wenn Sie Fragen oder Wünsche zu Artikeln haben, wenden Sie sich bitte an uns.Internationale Käufer – Bitte beachten Sie:-Einfuhrzölle, Steuern und Gebühren sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Gebühren liegen in der Verantwortung des Käufers.- Bitte erkundigen Sie sich vor dem Bieten/Kauf beim Zollamt Ihres Landes, wie hoch diese zusätzlichen Kosten sein werden.-Diese Gebühren werden normalerweise von der liefernden Spedition (Versandfirma) oder bei der Abholung des Artikels erhoben – verwechseln Sie sie nicht mit zusätzlichen Versandkosten.-Wir kennzeichnen Warenwerte nicht unter dem Wert und kennzeichnen Artikel nicht als Geschenke. Die Vorschriften der US-amerikanischen und internationalen Regierung verbieten ein solches Verhalten.]]>Wir befinden uns in Japan. Überprüfen Sie für elektrische Produkte den Hersteller und das Produkt und rechnen Sie die Spannung in das jeweilige Land um. Wir planen den Versand per FedEx oder DHL. Bitte kontaktieren Sie uns, da sich die Versandkosten in einigen Fällen ändern können. -Einfuhrzölle, Steuern und Gebühren sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Gebühren liegen in der Verantwortung des Käufers. -Diese Gebühren werden normalerweise von der liefernden Spedition (Versandfirma) oder bei der Abholung des Artikels erhoben – verwechseln Sie sie nicht mit zusätzlichen Versandkosten. -Wir kennzeichnen Warenwerte nicht unter dem Wert und kennzeichnen Artikel nicht als Geschenke. Die Vorschriften der US-amerikanischen und internationalen Regierung verbieten ein Unit Quantity NA Unit Type NA MPN NA Country Japan Brand No Brand UPC NA Country/Region of Manufacture NA California Prop 65 Warning NA Model NA Type NA

2 x Tubes Tesla EL34 with same Serial Number and good Values. We ship the item with German Post. 10M

TESTS CONDITIONS (datasheet) DUOVAC RADIOELEC Va=250V Vg2=265V Vg1=-13.5V Ia=100mA S=11mA/V HICKOK TV7D/U (6CA7 tube)HS5-3481 B25 D min=30 Please note that HICKOK is not a laboratory tester, though it is very well calibrated...HERE is how I calibrated mine following manual services specifications. I calibrated it to respect the low of the scale for filament... High voltage on filament would damage it...but gives higher values...0.6 (065-0.72) -->0.65V ; 1.1 (1.06-1.16) -->1.14V ; 1.5 (1.26-1.42) -->1.30V ; 2.0 (1.90-2.10) -->1.95V ; 2.5 (2.56-2.88) -->2.77V ; 3.0 (3.25-3.60) -->3.25V ; 4.3 (4.30-4.75) -->4.55V ; 5.0 (5.15-5.68) -->5.49V ; 6.3 (6.20-6.80) -->6.47V ; 7.5 (7.32-8.10) -->7.45V ; 10 (9.60-10.80) -->10.03V ; 12.6 (12.1-13.3) -->12.25V ; 20 (19.0-21.0) -->20.50V ; 25 (25.3-28.0) -->27.65V ; 35 (35.2-39.0) -->38.09V ; 50 (51.5-57.0) -->52.80V ; 75 (74.0-82.0) -->74.82V ; 117 (115-127) -->116.5VIf needed, i can share all other tests calibrations I get (129.5V/130V +o-3V ; 41.35V/40V +o-2V ; 4.21V/4V +o-1V ; 56.5V /56V....) TESLA DOUBLE SUPERPOSED RING GETTER U FINS BLACK BASE 10 SPIKES TOP MICA NO SPIKES BOTTOM MICA 97mA/86mA S=11 94mA/83mA S=11 47 47 EUROPE COUNTRIES --> ASK FOR MONDIAL RELAY SERVICE

FOR SALE 4 SLIGHTLY USED TESLA EL34 BROWN BASE TUBES HANDLING TIME 3 DAYS AFTER PAYMENT COMBINE PAYMENT&SHIPPING AVAILABLE

NOS Tesla EL34 perfekte Paar(2 Stück)Hergestellt im 9. Monat 1983O Getter Brown BaseOriginalverpackung. Getestet auf TESLA BM 215A Tester.Unglaubliche Stimme!Garantierter Betrieb!NOS = Ia: 100 mA S: 10 mA / V. 1 / a Ia: 115 mA S: 11 mA / V 2 / a Ia: 110 mA S: 11 mA / V

Template CDGSlightly scratched and dirtyBLU Description vacuum tube TESLA EL34 6CA7 measured 4pcs quad brown base with box ? conditionAlthough fine threads and dullness can be seen,Other than that, no noticeable scratches are seen.Please check the image for the condition of the getter/lettering. It will be a second-hand product that has passed the years.Please make a successful bid after understanding the scratches/dullness/feeling of use due to aging/use. ? OperationThe Gm value is measured with a vacuum tube measuring instrument, TC-2. Measurement conditionPlate voltage 250VHeater voltage 5VBias voltage (measured with two reference bias voltages for each vacuum tube.) Measured under the above conditions(1) Gm value 6975(2) Gm value 7100(3) Gm value 7225(4) Gm value 7475 It is in a state where it can be used without problems.Since it will be a second-hand product, the usage time etc. so far will bePlease understand that we cannot understand it. ? commodity contentsManufacturer: TESLAModel number: EL34 ?Accessories *All the items in the photo other than our equipment in the background. Please check it. Payment We accept PayPal only. Please make a payment within 3 days after send my invoice. Shipping Free shipping! We will ship by EMS?FedEx?DHL(Insured, Trackable, Including handling cost.) EMS (takes 4~7 days, includes with insurance & a tracking number). EMS (Express Mail Service) is international mailing service by Japan Post Office. We will ship your item within 2-5 business days, after your payment. We can ship ONLY to your Paypal address. About Us Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as gifts - US and International government regulations prohibit such behavior. International Buyers - Please Note: ?Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. ?Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. ?These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges. ?We do not mark merchandise values below value or mark items as “gifts” - US and International government regulations prohibit such behavior.

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% tests NOS, cannot verify if they are genuine nos 52.7/30 PC= 43.6 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

Up for your consideration is a matched Quad of Tesla EL34/6ca7 tubes. Audio Glassics was a tube reseller in the 70s to the 90s who stamped their name on lots of tubes. In this case they are made in Czechoslovakia EL34s . Photographs tell the rest of the story. Tubes will be professionally packed for safe transport to your door. I have some pairs and singles as well Please examine the photographs as there are an important part of the description in every listing. 73s & check out my other listings for all kinds of upcoming ham radio gear Shipping costs quoted are for the 48 lower states ONLY. Alaska & HI to be determined Questions ? For fastest response see my ebay about me page to contact me. Have some ham gear your not using ? Contact me I will buy it FAST! I will pick up or arrange shipping. 73s & Check out my other items! Sign up for my email newsletters by adding my eBay Store to your Favorites to see all kinds of upcoming ham gear listings. Shipping costs quoted are for the lower 48 states only. Alaska & Hawaii will be determined All items are offered as is and all sales are final. I will only accept a return if the item is not as described. Any claims of items not as described MUST be made within 24 hours of delivery. NO exceptions !!! By purchasing an item you are by default agreeing to these clearly visible terms. No more of this nonsense of having an item for weeks or months and claiming I just tried it and it does not work Or I did not have an antenna or power supply until weeks after purchase If you plan on being out of town for weeks when the item is delivered DONT buy it, wait till you return. Also I will not accept any returns at any time on any item where our anti taper sticker has been disturbed. No exceptions on that matter either

Tesla EL34, Pair 6CA7 / OO-Getter.. Geprft. Sehr gute Werte. Privat Verkauf. Keine Garantie. Keine Rcknahme.

ARS Russia JJ Tesla EL34 6CA7 Tube TV-7 Tested on Orange Tube tester 10. Buyer pays all shipping. No Reserve

NOS Tesla EL34 perfekte Paar(2 Stück)Hergestellt im 9. Monat 1983O Getter Brown BaseOriginalverpackung. Getestet auf TESLA BM 215A Tester.Unglaubliche Stimme!Garantierter Betrieb!NOS = Ia: 100 mA S: 10 mA / V. 1 / a Ia: 115 mA S: 11 mA / V 2 / a Ia: 110 mA S: 11 mA / V

FOR SALE 4 TESLA EL34 BROWN BASE NEW NOS TUBES HANDLING TIME 3 DAYS AFTER PAYMENT COMBINE PAYMENT&SHIPPING AVAILABLE

RARE Electrically and physically Matched Pair (2) of vintage NOS/NIB TESLA EL34/6CA7 BROWN BASE vacuum tubes with same date codes made in Czechoslovakia. Electrically test using a calibrated Sencore MU150 Continental II Vacuum Tube tester. These tubes test AS-NEW and have never been used. Due to the nature of vintage vacuum tube electronics, these tubes are being sold for parts AS-IS and will be properly packed for shipping. Please check my extensive feedback rating for confidence.

Tube Valvo EL34 with DD Getter and good Values. The Code is: XF3 X9D. You can not see the Company on the Glas. The items are shipped with German Post. 12M

2 x Tubes Tesla EL34 with same Serial Number and good Values. We ship the item with German Post. 10M

4 x Tubes Tesla EL34 with OO Getter and very good Values. The items are shipped with German Post. 9M

This is a vintage, old stock Tesla EL34 valve. The valve have been tested: - in one of my guitar amps (Fargen Micro Plex), and sounds great - in my Orange VT1000 Valve Tester, where is scores 9 (good), see pics - in my Sencore Mighty valve tester, fully serviced and calibrated last year. In this Emission in about 98% and there is no grid leakage (see pics)

Tesla EL34, Pair 6CA7 / OO-Getter.. Geprft. Sehr gute Werte. Privat Verkauf. Keine Garantie. Keine Rcknahme.

I have 1 Excellent very strong Vintage tesla EL34 tube labeled for groove tubes .This tube test 55 where 30 is the minimum good and new tubes test 48 to 50 on are tv7 tube tester