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

This listing is for (4) brand new, factory fresh JJ E34 tubes as a closely matched Quad.

Up for sale single Tesla double halo getters brown base Tested strong, new condition tested on my Hickok TV-7A/UMinimum good is 25Result 48

Vintage Tesla El34 Pair (6ca7). Measures 202mA and 209mA (vplate 300v, vg1 -5V on DuoVac tube tester). I have two more in another auction with same measurements with a small defect, however working great, was possibly a matched quad. Private sale, no warranty.

Quartett EL34 Tesla OO-Getter (NOS typ), Ip and gm tested quadAlle Röhren wurden exakt nach Hersteller geprüft bei Anodenspannung 250V, Schirmgitterspannung 250V und Steuergitterspannung -12,20V. 100mA Anodenstrom und 11,0mA/V Steilheit sind gleich 100%.Auf dem Röhrensockel ist der erste Wert der Anodenstrom in mA, der zweite Wert die Steilheit in mA/V. Darunter der Gitterstrom in µA.Die EL34 spielten zum Test in meinem PP Verstärker (AB Betrieb nach Mullard mit Ub=430V) einwandfrei.Rö. 1: 94,0mA / 12,4mA/VRö. 2: 94,5 mA / 12,6mA/VRö. 3: 95,5mA / 12,4mA/VRö. 4: 97,0mA / 12,4mA/V Ip and gm tested quad EL34 Tesla OO-getter (NOS typ).All tubes were tested exactly according to the manufacturer with plate voltage of 250V, screen grid voltage of 250V and control grid voltage of -12,20V. 100mA plate current and 11,0mA/V gm are equal to 100%.On the tube base, the first value is the plate current in mA, the second value is the slope in mA/V. Below this is the grid current in µA.When tested in my PP amplifier (AB operation according to Mullard with Ub=430V), the EL34 played perfectly.Rö. 1: 94,0mA / 12,1mA/VRö. 2: 95,0 mA / 11,9mA/VRö. 3: 95,0mA / 12,0mA/VRö. 4: 95,0mA / 12,2mA/V

FOR SALE 6 USED TESLA EL34 BROWN BASE TUBES HANDLING TIME 3 DAYS AFTER PAYMENT COMBINE PAYMENT&SHIPPING AVAILABLE

Matched, Selected Quad Tesla EL34 /6CA7/ Power Pentode Tubes.Rare New Old Stock in Original Red Boxes. Same Production Codes: XF - Made June 1966.Tested on Professional Tube Tester L3-3Test Condition:Uf = 6,3VUa = 250VUg1 = - 7,3VUg2 = 250VResultsTube 1 Ia1 = 100mA S = 12,2mA/V Tube 2 Ia2 = 100mA S = 12,3mA/V Tube 3 Ia1 = 101mA S = 12,8mA/V Tube 4 Ia2 = 101mA S = 12,8mA/V Where 100% is Ia = 100mA S = 12,0mA/V Item will be sent by registered PRIORITY mail. Your purchase should arrive in 4-10 business days to EU countries, 10-31 business days to rest of the world.Im not responsible for customs duties and customs delays, if the goods will be shipped outside the EU.

HI . Dear byers . I offer for sell lot of 3Pcs USED tested tubes of model EL34 made by Tesla Roznov , the tubes are in very good condition and have a test results of 80% perfect for sound projects . We are a new seller company in Ebay , but we have a lot of experience in the electronics trade . The products we offer for sale are old vintage production which we buy from the army or from large manufacturers . After you buy a product from us we will pack securely and ship your purchase within 48 hours or the first possible business day after the holidays . If you want us to issue you an invoice for the purchase, please mention this in the payment form . For combined shipping please write to us to specify the exact quantities and weight to calculate the delivery price .The shipments are sent worldwide with priority mail and tracking number by Bulgarian Post or Deutsche post . In case of a problem with the shipments, please contact us first to find a solution to the problem before contacting with Ebay. Thank you for interest see my ll other items for sell.

EL34 = 6CA7 TESLA used , tested Valve Tube ,Brown base, O-Getter , 1pcs./set Tested with L1-3 tube tester.The measurement results are shown in the photos and here :Ia = 73mA, S = 9.8mA/V The EL34 is a much loved audio power valve with an anode dissipation of 25?Watts. The EL34 was the 1952 successor to the very successful EL37 and both share a high value of mutual conductance 11.0?mA/V. Shipping: We ship worldwide by Registered and priority Lithuania Post Delivery service.Tracking number will be provided. Tracking information :http://www.post.lt/en/help/parcel-search RNxxxxxxxxxLT Estimate delivery time is 7-30 working days.

Ein Ip and gm geprüftes quad EL34 Tesla, OO-Getter. NOS type.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 99+% 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 tested quad EL34 Tesla, OO-getter. NOS type.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 99+% 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). Alle Röhren geprüft bei Ua=250V; Ug2=265V; -Ug1=13,50V; Uf=6,30V, fünf min. nach Einschalten:All tubes tested at Va=250V; Vg2=265V; -Vg1=13,50V; Vh=6,30V, five minutes after switching on: Röhre #1: Ia=85mA, S=11,1mA/V, Ig1=0,02µARöhre #2: Ia=85,5mA, S=10,9mA/V, Ig1=0,03µARöhre #3: Ia=88mA, S=10,9mA/V, Ig1=0,06µARöhre #4: Ia=89mA, S=10,9mA/V, Ig1=0,13µA

Two Tesla EL34 / 6CA7 brown base tubes manufactured in the Czech Republic, O-O Getter. This listing is for a matched pair of (2) Tesla EL34s brown base tubes. Tubes were manufactured in Czech Republic, have OO getters and double-slots with welded plates. Tubes are matched within 1% and measure at 3710 and 3700 on our Hickok 605A tube tester. These tubes sound fantastic. Very clear with great highs and strong clean bass. Calculated USPS Priority Mail shipping Free 30 day returns.

Vintage Pair Tesla EL34 6CA7 Tube • Class A Tested • Marshall Branded • Matched SEE ITEM SPECIFICS FOR TEST RESULTS. Closely Matched GM and Plate Current. *Tested @ Tube Manual Class A Parameters Thanks for visiting our store! See photos for tube cosmetic condition. If you seek tubes that are tested at tube manual specifications, please consider clicking the Save This Seller link at the top of the page. See our feedback. Thank you. We guarantee and test all our vacuum tubes based on the manufacturers tube Manual specifications using uTracer3+ curve tracer & Tube tester, regulated DC and AC power sources, benchtop and handheld multimeters for accurate precise repeatable measurements. I love my TV-7B, Hickok 800, 6000A, EICO 667, and my B&K 700. But these are just tube testers and not true parametric testing equipment. They are for Go - No Go testing and are best for weeding out bad and weak tubes. Truthfully, the best way to know how a tube will work is to use it in the actual application. The next best thing is to test it at the manufacturers parameters in the tube manual with proper lab or bench testing. This way one knows how close the tube is to its designed standards. This may seem excessive, but we try to offer the tube amp builder, technician, and musician the best service and product we can. More tubes to come. Shipping The tube/s will be packaged in original box (if applicable) and then sent out in a 6x4x4 shipping box. We use USPS or UPS shipping services. Please contact us for special shipping needs. Ask any questions or concerns you have prior to purchasing so your transaction can be fast and accurate!

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 << EL34 TESLA voir photos, see photos and read all !Test results: ? B&K747B (GM) 97 %(Mostly new EL34 test 110%+ on this tester)------Metrix 310B : Vp: 250V / Vg2: 250V / Vg1: -13,5V (GM) ? 9 mA/V (nominal 11)I plate result: ? 79 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....

2 x Tesla EL34 DD-Getter. Geprüft Funke 19. Gut. 32/34 mA. Gut ab 22mA