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TECHNICAL
INFORMATION
6AG7
GENERAL DESCRIPTION
Principal Application: The
6AG7
is
a
metal
high
-
vacuum type
power amplifier
pentode designed
for use
in
the
output
stage of television video
amplifiers.
Cathode:
Coated Unipotential
Heater
Voltage
(A -C or D -C)
6
3
Volts
Heater Current
0
65
Ampere
Envelope:
Metal
Shell,
MT
-8
Base:
B8-21 Small Wafer
Octal
8
-Pin
Base
Material:
Phenolic
PHYSICAL DIMENSIONS
MAX
NIA
8-6
HAM NEWS
FROM:
The tube
is
capable
of
operating at
high plate cur-
rent
levels and
features
a
high
transconductance.
Direct Interelectrode Capacitances:
Grid to Plate
0.06
µµf
Input
13
µµf
Output
7.5
µµf
Grid to Screen (Approx)
5.8
µµf
Grid to Cathode (Approx)
5.2
µµf
Heater
to
Cathode (Approx)
10.7
µµf
DESIGNER'S CORNER
(Cont.)
band,
3850
to
4000
KC.
There
is
no reason, however,
to
think
that
equally successful performance
would
not
be
obtained
on
20
or
10,
or even on
what
is
left of
160.
It's
simply
a
matter
of
coil
design.
The unit pictured
in
this
issue of
Ham
News was
the
second one ever built. Ten minutes after the last
solder
joint
had cooled down, the rig was perfectly
adjusted
and
was
delivering
5
watts
peak power to
a
75
ohm dummy
load-and
I
followed
the adjustment
procedures described
in
the article. Maybe it
will
take
some people
a
little
longer to read the
instructions
than
it did for me
(after
all,
I
wrote them), but.1,
2,
3
procedure really
does
the job.
I
didn't
peek
ahead
in
the instructions, either.
If
you get one
-tenth
the fun out of building and
operating
SSB
Jr.
as
I
did
in
designing, building and
using it, you are
in for
the most enjoyment
you have
ever had
in
ham
radio.-W2KUJ
1
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