Kip wrote:

I'm searching for any information you may have on a 6M-E5 'Magic Eye'
tube manufactured by 'Nippon Electric' and apparently only used in
Heathkit AJ-11S AM/FM Tuners circa 1962. Numerous Internet, phone
calls and e-mails have come up empty.

One of the very few Internet articles I did come across indicated that
the 6M-E5 'Eye Tube' was used in the AJ-11S for economy rather than
using then expensive meters. These tuners used two of these tubes, one
for AM and one for FM.

My 1970 NEC handbook has a 6M-E10, but no 6M-E5. It does list an EM5,
which is a dual section unit.

Have you got the pinout from the manual?

It should not be TOO hard to replace these with a 6E5, or whatever
magic eye the guys at AES have on sale today, but it may take some
repinning and change of resistor values.

I have available a 37K scan of our sole survivor.

Yes, but do you have the relevant part of the schematic?
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

In article , (Scott
Dorsey) wrote:

Kip wrote:

I'm searching for any information you may have on a 6M-E5 'Magic Eye'
tube manufactured by 'Nippon Electric' and apparently only used in
Heathkit AJ-11S AM/FM Tuners circa 1962. Numerous Internet, phone
calls and e-mails have come up empty.

One of the very few Internet articles I did come across indicated that
the 6M-E5 'Eye Tube' was used in the AJ-11S for economy rather than
using then expensive meters. These tuners used two of these tubes, one
for AM and one for FM.

My 1970 NEC handbook has a 6M-E10, but no 6M-E5. It does list an EM5,
which is a dual section unit.

Have you got the pinout from the manual?

It should not be TOO hard to replace these with a 6E5, or whatever
magic eye the guys at AES have on sale today, but it may take some
repinning and change of resistor values.

I think heath may have had several tuners that used the 6M-E5. Two 6E5s
might not even fit in the Heath tuner I am thinking of, and you would have
to cut up the front panel to make them work, as well as building new
mounting brackets. The 6E5 is quite a bit larger than the 6M-E5.


Regards,

John Byrns


Surf my web pages at, http://users.rcn.com/jbyrns/

John Byrns wrote:

I think heath may have had several tuners that used the 6M-E5. Two 6E5s
might not even fit in the Heath tuner I am thinking of, and you would have
to cut up the front panel to make them work, as well as building new
mounting brackets. The 6E5 is quite a bit larger than the 6M-E5.

Is the 6M-E5 a 9-pin mini, then? Is it top-view or side-view?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

In article , (Scott
Dorsey) wrote:

John Byrns wrote:

I think heath may have had several tuners that used the 6M-E5. Two 6E5s
might not even fit in the Heath tuner I am thinking of, and you would have
to cut up the front panel to make them work, as well as building new
mounting brackets. The 6E5 is quite a bit larger than the 6M-E5.

Is the 6M-E5 a 9-pin mini, then? Is it top-view or side-view?

It's top view just like a full size 6E5, I don't remember if the base was
a 9-pin mini, or something slightly special, I seem to remember something
odd about the base.


Regards,

John Byrns


Surf my web pages at, http://users.rcn.com/jbyrns/

John Byrns wrote:

In article , (Scott
Dorsey) wrote:


Is the 6M-E5 a 9-pin mini, then? Is it top-view or side-view?


It's top view just like a full size 6E5, I don't remember if the base was
a 9-pin mini, or something slightly special, I seem to remember something
odd about the base.


Regards,

John Byrns

For those who missed it the first time...
http://www.jogis-roehrenbude.de/Roehren-Geschichtliches/Mag_Augen/Mag_Augen2/6E5M.htm

In article , Bill M
wrote:

John Byrns wrote:

In article , (Scott
Dorsey) wrote:


Is the 6M-E5 a 9-pin mini, then? Is it top-view or side-view?


It's top view just like a full size 6E5, I don't remember if the base was
a 9-pin mini, or something slightly special, I seem to remember something
odd about the base.


Regards,

John Byrns

For those who missed it the first time...

http://www.jogis-roehrenbude.de/Roehren-Geschichtliches/Mag_Augen/Mag_Augen2/6E5M.htm

I don't know about that, but now that I think about it, the base must have
fit a standard 9-pin mini socket because I didn't have any problems
pluging it into my tube tester. IIRC even though the tubes had pins like
a 9-pin mini they had a black bakelite base like most octal or older
tubes.


Regards,

John Byrns


Surf my web pages at, http://users.rcn.com/jbyrns/

Bill M wrote:

For those who missed it the first time...
http://www.jogis-roehrenbude.de/Roehren-Geschichtliches/Mag_Augen/Mag_Augen2/6E5M.htm



Looks like it's a 7-pin miniature pinout, but on a big fat plastic base
so you may actually be able to shoehorn an octal magic eye tube in there.

Call AES and see what kinds of magic eye tubes they have in stock that
will physically fit into place and have 6V filaments.

The electronic stuff is easy. The schematic on that web site basically tells
you all you need to know; where the plate, filament, grid and deflection pins
are and what voltages they need to see. With this you can adapt just about
any magic eye tube if you can make it physically fit.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

On 6 Jan 2005 11:29:49 -0500, (Scott Dorsey) wrote:

Looks like it's a 7-pin miniature pinout, but on a big fat plastic base
so you may actually be able to shoehorn an octal magic eye tube in there.

It is a standard 7 pin miniature pin spacing on the base. I have
posted a scan of a 6M-E10 (same size) alongside a 1629 for comparison.
The 1629 is pretty much the same size as the standard 6Volt heater
Eye-tubes.

The picture is on alt.binaries.pictures.radio
Brian McAllister

Sarasota, Florida

email bkm at oldtech dot net