11 seconds, Peak heater-cathode volts: heater negative with respect to cathode, 300 max; heater positive with respect to cathode, 200 max (the dc component must not exceed 100 volts). Except for heater and heater-cathode ratings, this type is identical with miniature type 6DK6.
30T6
30T6A
Related types:
4DT6A, 6DT6A
SHARP-CUTOFF PENTODE
~4
5 IIMiniature types used as FM de- [H 3 6 Ga tector in television receivers employing
series-connected heater strings. Outline " 2 7 G~
7B, OUTLINES SECTION. Heater IS , volts (ac(dc), 3.15; amperes, 0.6; GI
warm-up time (average), 11 seconds. Except for heater ratings, these types are identical with miniature types 6DT6 and 6DT6-A, respectively. Type 3DT6 is a DISCONTINUED type listed for reference only.
30Z4 *
Related types:
2DZ4,6DZ4
MEDIUM-MU TRIODE Miniature type used as a local-oscillator tube in uhf television
re-ceivers covering the frequency range G 2 . 7 P from 470 to 890 megacycles and em- I
ploying series-connected heater strings. P
Outline 7A, OUTLINES SECTION. Heater volts (ac/dc), 3.2; amperes, 0.45;
warm-up time (average), 11 seconds. Peak heater-cathode volts, 180 max (the dc com-ponent must not exceed 100 volts when heater is positive with respect to cathode).
Except for heater and heater-cathode ratings, this type is identical with miniature
type 6DZ4. SHARP-CUTOFF PENTODE ~H4 sP
H G2
Miniature type used as rf ampli- 3 &
3 EA5
fier in vhf tuners of television receivers " K Related type: having series-connected heater strings. IS 2 7 IS6EA5 Outline 7B, OUTLINES SECTION.
Heater volts (ac/dc) 2.9; amperes, GI'
0.45; warm-up time (average), 11 seconds. Except for heater ratings, this type is identical with miniature type 6EA5.
108
3EH7
Related type ..
4EH7,6EH1
3EJ7
Related types:
4EJ1,6EJ1
SEMI REMOTE-CUTOFF
PENTODE IfMiniature type used as if-ampli-fier tube in television receivers. Out-line8C,OUTLINESSECTION.Heater volts (ac/dc),3.4; amperes, 0.6; Except for heater ratings, this type is identical with miniature type 6EH7.
SHARP-CUTOFF PENTODE Miniature type used as if-ampli-fier tube in television receivers. Outline 8C, OUTLINES SECTION. Heater volts (ac/dc), 3.4; amperes, 0.6. Ex-cept for heater ratings, this type is identical with miniature type 6EJ7.
--======== Technical Data ========;;;;;;;;;;
*
H4 5PH 3 & IS
G 2 I 7K
K
~
H4 51'H · IS
3 . &
~2 7K
I
HIGH-MU TRIODE Miniature type with frame grid used in vhf tuners of television re-ceivers. Outline 7B, OUTLINES SEC-TION. Heater volts (ac/dc), 2.8; am-peres, 0.45. Except for heater ratings, this type is identical with miniature type 6ER5.
HIGH-MU TRIODE Miniature type used as rf-ampli-fier tube in vhf tuners of television re-ceivers employing series-connected heater strings. Outline 7B, OUTLINES SECTION. Heater volts (ac/dc), 3;
3ER5
1.laled Iv,e ••
:lEIS,6EIS
3FH5
flel.ted type ••
:lFH5,6FHS
amperes, 0.45; warm-up time (average), 11 seconds. Except for heater ratings, this type is identical with miniature type 6FH5.
... 3 ___ . & IS
G 2 7 K
I
HIGH-MU TRIODE Miniature type with frame grid used as grounded-cathode rf-amplifier tube in vhf tuners of television re-ceivers employing series-connected
3GKS
Related type:
2GK5,6GK5
*
H4 5PK heater strings. Outline 7B, OUTLINES
SECTION. Heater volts (ac/dc), 2.S; amperes, 0.45; warm-up time (average), 11 seconds. Except for heater ratings, this type is identical with miniature type 6GK5.
H
SHARP-CUTOFF TWIN PENTODE Miniature type used as combined sync separator, sync clipper, and agc amplifier tube in television receivers employing series-connected heater strings. Outline 8D, OUTLINES
SEC-3GS8/
3BU8
Related type:
4GS8/4BU8
TION. Heater volts (ac/dc), 3.15; amperes, 0.6. Except for heater ratings, this type is identical with miniature type 4GSS/4BUS.
H
HIGH-MU TRIODE Miniature type used as rf-ampli-fier tube in vhf television tuners. Out-line 7A, OUTLINES SECTION.
Heater volts (ac/dc), 2.7; amperes, 0.45. Except for heater ratings, this type is identical with miniature type 6HA5.
SHARP-CUTOFF TWIN PENTODE
3HAS
Related Iype:
6HA5
Miniature type used in agc
am-plifier, sync, and noise-limiting cir-
3 HS8
cuits of television receivers employing Related type.:
series-connected heater strings. One 4Hsa, 6HS8 K G3P, pentode unit is used as a combined
sync separator and sync clipper; the other pentode unit is used as the agc amplifier.
109
RCA Receiving Tube Manual
Outline 8D, OUTLINES SECTION. Heater volts (ac/dc), 3.15; amperes, 0.6;
warm-up time (average), 11 seconds. Except for heater ratings, this type:s identical with miniature type 6HS8.
3JC6
lelaleel typel:
4JC6,6JC6
SHARP·CUTOFF PENTODE Miniature type with frame grid used in if-amplifier stages of television receivers utilizing intermediate fre-quencies in the order of 40 megacycles and employing series-connected heater
H
strings. Outline 8B, OUTLINES SECTION. Heater volts (ac/dc), 3.5; amperes, 0.6; heater warm-up time (average), 11 seconds. Except for heater ratings, this type is identical with miniature type 6JC6.
3JD6
Related typel:
4JD6,6JD6
SHARP-CUTOFF PENTODE Miniature type used as if-ampli-fier tube in television receivers utiliz-ing intermediate frequencies in the or-der of 40 megacycles and employing series-connected heater strings.
Out-line 8B, OUTLINES SECTION. Heater volts (ac/dc), 3.5; amperes, 0.6; warm-up time (average), 11 seconds. Except for heater ratings, this type is identical with miniature type 6JD6.
3LF4
3Q4
3Q5GT
BEAM POWER TUBE
GlaSB lock-in type used in output stage of ac Ide Ibattery portable receivers. Outline 13A, OUTLINES SECTION. Tube requireB lock-in socket. Filament volts (de), 1.4 (parallel), 2.8 (Beries); amperes, '.1 (parallel), 0.05 (Beries).
For electrical characteristics, refer to glass-octal type 3Q5-GT. Type 3LF4 is used principally lor renewal purposeB.
POWER PENTODE
Miniature type used in outpu, otage of lightweight, compact, portable battery-operated equipment. Outline7B, OUTLINES SECTION.
Except for terminal connections, types 3Q4 and 3V <I are identical. Refer to type 3V 4 for ratings and typical operation. Type 3Q4 is uBed prin-cipally for renewal purposes.
BEAM POWER TUBE
Glass octal type used in output stage of ac Ide battery portable receivers. Outline 14C, OUTLINE" SECTION. This type may be sup-plied with pm 1 omitted. Filament voltB (de), 2.8 in serie:::. filament arrangement and 1.4 in parallel arrangement; amperes 0.05 (series), 0.1 (parallel). Typical operation as Class AI amplifier: plate and grid-No.2 volts, 110 ma",;
grid-N 0.1 volts, -6.6; peak af grid-No.1 volts,
~
G2 4 5 GIP.3
'+
2 7 ,NC I 8 G3 FM
I 6.1 (seriel), 5.4 (parallel); plate ma., 8.5 (BerieB), 10 (parallel); grid-No.2 ma., 1.1 (seri •• ), 1.4 (parallel);
, total cath04e mao 6 max for each l.4-volt filament section; plate resistance (approx.), 0.11 megohm (series), 0.1 megohm (parallel); transconductance, 2000 /'mhos (.eries), 2200 /'mhol (paraUel); load resistance. 8000 ohms; total harmonic distortion, 8.5 per cent (.eries), 6 per cent (parallel); max.-signal power output. 830 mw (.eries), 400 mw (parallel). This type i. used principally :or renewal purposes.
110
=-========-
Tec/;nical Data========----POWER PENTODE
Miniature type used in output stage of lightweight, compact, portable,
battery-oper-ated equipment. Outline 7B, OUTLINES SEC-
354
TION. Tube requires miniature seven-contact socket. Filament volts (de), 2.8 (series), 1.4 (parallel); amperes, 0.05 (series); 0.1 (parallel).
Typical operation as class Al amplifier: plate and grid-No.2 volts, 67.5 (90 max); grid-No.1 volts,-7; peak af grid-No.1 volts, 7; zero-signai
plate rna., 6 (series) 7.2 (parallel); zero-signal grid-No.2 rna., 1.2 (series), 1.5 (parallel); plate resistance (approx.); 0.1 megohm; transconductance, 1400 I'mhos (series), 1550 I'mhos (parallel); load resistance, 5000 ohms; maximum-signal power output, 160 milliwatts (series), 180 milliwatts (parallel). This type is used principally for renewal purposes.
POWER PENTODE
Miniature type used in output stage of lightweight, compact, portable, battery-oper-ated equipment. Outline 7B, OUTLINES
SEC-TION. Tube requires miniature seven-contact
3V4
socket. Filament volts (de), 2.8 (series), 1.4 (parallel); amperes, 0.05 (series), 0.1 (parallel).
Typical operation as class Al amplifier; plate and grid-No.2 volts, 90 (100 max); grid-No.1 Yolts, -4.5; peak af grid-No.1 volts, 4.5;
zero-signal plate rna., 7.7 (oeriea), 9.5 (parallel); grid-No.2 rna., zero-zero-signal, 1.7 (series), 2.1 (parallel); plate resistance (approx.), 0.12 megohm (series), .1 megohm (parallel); transconductance, 2000 JLmhos (series), 2150 ,umhos (parallel); load resistance, 10000 ohms; maximum-signal power output, 240 milli-watts (series), 270 millimilli-watts (parallel). This type is used principally for renewal purposes.
H~H4
: G2 SHARP-CUTOFF PENTODE3 6 Miniature type used as rf ampli-fier in television receivers employing
G3 2 7 K series-connected heater strings. Outline
I S , 7B, OUTLINES SECTION. Heater
G, volts (acjdc), 4.2; amperes, 0.45;
4AU6
Ralated type.:
3AU6, 6AU6A, 12AU6
warm-up time (average), 11 seconds. Peak heater-cathode volts: heater negative with respect to cathode, 200 max; heater positive with respect to cathode, 200 max (the dc component must not exceed 100 volts). Except for heater and heater-cath-ode ratings, this type is identical with miniature type 6AU6.
TWIN DIODE-HIGH-MU TRIODE Miniature type used as combined detector, amplifier, and ave tube in automobile and ac-operated radio re-ceivers employing series-connected
Gr heater strings. Outline 7B, OUTLINES
4AV6
Related type.:
3AV6,6AV6, 12AV6
SECTION. Heater volts (ac/dc), 4.2; amperes, 0.45; warm-up time (average), 11 seconds. Except for heater ratings, this type is identical with miniature type 6A V6.
SHARP-CUTOFF PENTODE Miniature type used in compact radio equipment as an rf or if amplifier at frequencies up to 400 megacycles per second. Outline 7B, OUTLINES SECTION. Heater volts (ac/dc), 4.2;
48C5
R.lated type ..
3BC5,6BC5
III