And number after mC usually means iteration or variant. Like mC3 = third variant of long plate ECC83 from that manufacturing plant.
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- Thread starter nolasally
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And number after mC usually means iteration or variant. Like mC3 = third variant of long plate ECC83 from that manufacturing plant.
Correct.
Little known fact.
mCHammer = "Can't Touch This" special edition.
mCHammer = "Can't Touch This" special edition.
yep.
thanks buddy.
Philips apparently set up some of Matsushita's manufacturing lines in the late 1950s/early 1960s and sold them tube manufacturing equipment. Matsushita's small signal tubes from that era look very much like Philips products, beyond just the seams in the glass.Your etched code "FOH" indicates French made in Radiotechnique plant. This is consistent with the cross-hatched top of the ECC83.
Matsushita used some Philips jigs when making their tubes, in the 1970s. So most of them also have cross-hatched tops.
So... the tube you have is prolly French made. Do not worry. Most Philips consortium made tubes are very good.
I've even seen some "made in the United States" tubes that were clearly Eastern Bloc - mostly RCA labeled stuff from the period after RCA's plants were closed and GE took over the trademark.
thats a sideways H not an F.
matsushita made tubes on mullard tooling. hence the “japanese mullards” nickname. didnt know they had philips tooling as well.
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oh yes. rca-labelled EI and tungsram are very common, as are west germany and holland relabelled by rca. rca 6922 and 7308 are often siemens munich and (IIRC) amperex herleen holland.
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It's the casting mark from the top molding.
I'm pretty sure that the tube makers had their cylindrical glass envelopes sourced from several sub-contractors. Especially, during the war years.
you mean the seams? siemens munich did it, too. did all of the philips-related manufacturers do this?
ah...so herleen and munich, maybe other factories, were at one time likely gettin their glass bottles rom the same place?
Single seam mark across the top, right? Not cross-hatch. That would prolly mean some Philips company made them.
As far as I know, RFT ECC83 did not have any seams on the top.
As far as I know, RFT ECC83 did not have any seams on the top.
RFT ecc83 have no seams on top
Most probably, he has a Philips consortium ECC83. A fine tube.
he? are you talkin bout the OPs tube we cnofirmed was siemens munich a while back?Most probably, he has a Philips consortium ECC83. A fine tube.
I was actually referring to @Mr Boochie's post.
