Description
#2 3 pcs. of Röhren Tubes E80CF VALVO Red Label, S.Q., Goldpins, AF-/RF-Triode-PentodeMaybe used; Emission tested good or very good according to the FUNKE-W19 tube tester Description E80CF :The E80CF is an Indirectly heated (6,3 Volts, 0,33 Amp.) 1,75 / 2,15 Watts medium-power AF-/RF-medium-µ Triode-Pentode (combi-tube!) with special quality- (S.Q.-) features, such as high reliability and a long-lifetime of 10.000 hours (even in case of frequent and long cut-off periods) as well as high vibration- and shock resistance. The E80CF is versatilely usable in RF-stages (e.g. as frequency mixer and oscillator up to the VHF range) as well as in audio amplifiers (e.g. as low noise frontend-amp. (Pentode) and subsequent driver- or output stage (Triode)). For more information please download the original Philips datasheet as pdf at *). All 3 tubes have Philips production codes on their bulbs:E80CF no. 9347: BG5 D3K3 E80CF no. 9931: BG5 D5K4E80CF no. 20964: BG5 D4B3, and additionally a G.Abl.-Stamp, what indicates that the tube was provided for a public authority, in most cases the West-German Post and Telecom Condition:The tubes are unboxed and therefore have to be rated as USED, but are looking very good and seem to be non-used or only a little bit used. Their electrical condition is good or very good, as tested according to the testcards #1031 and #1032 of the FUNKE-W19 tube-tester, see below. Tests:All tests are carried out after a burn-in time of at least 10 minutes under load. Emission test under zero bias condition (U_g1=0) according to the test parameters of testcards #1031, #1032 of the tube tester FUNKE-W19: - Triode: U_plate = 100 VDC, U_g = 0 Volts, I_plate_{100%} is 15,8 mA , good (60%) is starting from 9,5 mA - Pentode: U_plate = 200 VDC, U_g2 = 60 VDC, U_g1 = 0 Volts, I_plate_{100%} is 6,5 mA, good (60%) is starting from 3,9 mA Test results:Tube # 1 (no. 9347) Triode: I_plate = 25,9 mA = 164% of 15,8 mA ==> very goodPentode : I_plate = 5,25 mA = 80,8% of 6,5 mA ==> good Tube # 2 (no. 9931) Triode: I_plate = 24,1 mA = 153% of 15,8 mA ==> very goodPentode : I_plate = 6,35 mA = 97,7% of 6,5 mA ==> very good Tube # 3 (no. 20964) Triode: I_plate = 21,8 mA = 138% of 15,8 mA ==> very goodPentode : I_plate = 5,65 mA = 86,9% of 6,5 mA ==> good References: *) https://frank.pocnet.net/sheets/030/e/E80CF.pdf ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Achtung! Privatverkauf meiner Röhrensammlung! Nur deshalb verkaufe ich die Röhre(n) an Käufer im Inland nur wie oben beschrieben und mit auf 30 Tage beschränkter Rücknahme, aber ohne weitere Funktionsgarantien!Attention! This is a private sale of my tube collection! Thats why I sell the tubes to foreign buyers only as decribed above without any warranty. Versand / Shipping: Innerhalb Deutschland im versicherten Paket mit DHL (7,50 Euro) oder Hermes (6,30 Euro) , Zusendung an Abholstation oder Paketshop möglich! Andere Versandarten bitte anfragen! Angegebene Versandkosten beinhalten Verpackungskosten! International bidders are welcome! Shipping possibilities: 1. EU countries: Packaging and shipping, registered and with tracking service up to a total weight of 2,0 kg with German DHL-Service for 15,00 Euro. 2. World Wide Shipping outside European Union : 2a) Packaging and shipping, registered and with tracking service up to a total weight of 2,0 kg with the German DHL small package service for 19,00 Euro only (special price) to Switzerland and U.K. 2b) Packaging and shipping, registered and with tracking service up to a total weight of 2,0 kg with the German DHL small package service to other countries outside the European Union: Unfortunately DHL has changed its services and increased the fees from July 1st, 2022! Now I have to require a shipping fee of 24,00 Euro in case of most destination countries, such as Australia, Canada, Japan, New Zealand, South Korea, Taiwan, USA, Vietnam and other. Before you make your purchase please ask me, if your country of destination is among this group of countries! If not, then the case 2c) will apply. 2c) Packaging and shipping, registered and with tracking service up to a total weight of 5,0 kg with the German DHL standard package service for a fee up to 48,00 Euro. The final fee depends on the country of destination. For P.R.China, for example, it will be 43,00 Euro! Attention! Of course it is possible to ship small parcels with DHL or other companies for lower shipping fees from Germany to most countries in the world, but then without services additional to the bare shipping service! Please take notice of my shipping principles here, caused by bad experiences in the past: I basically do not ship without registration, insurance and tracking services! Combined shipping: I support combined shipping as far as it makes sense and is possible.
Live search