Good outcome.

6N8 is a horrid little piece of work. It should not be hard to draw a 6N8 and then show which elements connect to an old valve base. I will have these already in my old AutoCad program. I see no reason to have anything other than the Pentode drawn & the socket for the wiring bit.

The important thing is to get the fly lead into the socket of the 6N8 and clearing the pins of the old octal socket so that they can be pulled down then soldered in the construction phase,

Where I needed to go octal to octal in order to make adapters to test valves with odd pin outs in my tester, I drilled a hole in the side of the old tube base for the fly lead.

EBF2G, alternative EBF32 / EBF35: 6N8 is EBF 80

Marc

Marc,


I tried hunting down EBF32 & EBF35 and no joy at all from aussie sources & whomever did the original transplant of the octal socket to a 9 pin base to take the 6N8 did a rather good job.

The 6N8 may well be a horrid bit of work in the eyes of some but was a rather common type for detector type tubes of the 1960/70's as far as I can recall.
It is now happily doing its job in this...set strange as it may look & once back in the cabinet nobody really notices & as it is now it is a really good performer easily pulling in AM stations over 100km from Perth on just a few metres of aerial just tossed out the door on the ground.
Had a bit of fun trawling around the SW band last night & on that same aerial lots & lots of stations there NOT that I could understand any of them apart from one with a strong US accent by the presenter.

The owner did a good job on doing up the cabinet so I think he will be rather chuffed to have it working. I have taken a couple of photos & will post them here.

Lindsay

6N8 is earlier than the sixties, I have the radio clubs (not that long ago refitted) HMV 54 radio gram here, suffering loss of volume audio section. and this thing is before the sixties

I have not had a chance to look at it fully, & it does get a rough trot. It has several 6N8's & seeing the 807 appears to be good their next, before I slip the chassis (Pain).

Marc

6N8 is earlier than the sixties

According to the Vademecum, 6N8 was first manufactured by Hytron of Salem, Massachusetts in 1949.

Somewhere in stuff that landed here, I found a 6AV6 adapted to likely replace a Triode double diode. Having made adapters for the VCT tester, there is an art to making such things as not only is it desirable to get the plug & socket to be robust & look neat care must be taken to absolutely ensure that wires cannot short.

It is better to wire the socket first, so that it can sit neatly on / in the valve base and the wire can be fed into the octal pins, drawn down & soldered after checking & that keeps the wire length short, when finished.

I have the pinouts of both of these tubes & can draw the connections octal to novel if someone actually wants it. The warning here is that EBF2G does not follow the normal pin pattern of most of the octal types. Orientation of the base & socket and the wires should also be thought out & the resultant adapter marked as to what it is.

Marc