I got 4 tubes like this one, marking gone. Looking on the Internet the PCL82 seems to be the best match. Can anybody help confirming?
Thank you!
Jose
Thank you!
Jose
Can you measure heater resitance wirh a VOM? I have some of them and comparing it may be of help to know heater ratings.
4 of them (Mullard) measure 8.6 ohms. The Mazda one in the photo 7.8 ohms.
Can you also send a photo of some of them? I want to compare the internal structure.
Thanks!
The triode section of the PCL 82 has the same height as the penthode. The filament resistance is indeed app. 8 ohms in contrast to the ECL 82 which is around 1 ohm.
In contrast with this, the triode section of the PCL 86 is small - it's in fact half a ECC83 and of the same size.
The triode of the 82 is beautiful sounding; At Vb= 200v and a Ra from 100- 220k it has the lowest distorsion (about 1,5%) of all triodes I know.
In contrast with this, the triode section of the PCL 86 is small - it's in fact half a ECC83 and of the same size.
The triode of the 82 is beautiful sounding; At Vb= 200v and a Ra from 100- 220k it has the lowest distorsion (about 1,5%) of all triodes I know.
Thank you. It looks indeed that those are PCL82. Only one looks NOS, the rest are used, need to test them.
For me the PC86 is the most linear triode I have ever tested.