EK1

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 200 mA

Description

Indirectly heated octode frequency-converter tube for radio receiver mixer service, with oscillator/mixer operating conditions, capacitances, conversion characteristics, and limiting values.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 200 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Octode

X-ray radiationInterelectrode capacitances

Max plate voltage: 400 V
Max screen voltage: 400 V
Max screen dissipation: 0.3 W
Max cathode current: 10 mA

Octode frequency-converter tube

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Octode

Characteristic

Heizung ind. Vf
6.3 V
Ri (Vg4
-25 V
Ig (3 + 5) min [1]
2.3 mA
Ig (3 + 5) min [2]
10 mA
Ig (3 + 5) max [1]
5.2 mA
Ig (3 + 5) max [2]
20000 Ohm
Wg (3 + 5) max = 0 [1]
5 W
Wg (3 + 5) max = 0 [2]
50 V
Rg4 max
2 Megohm
Vg4 (Ig4 = 0,3 µ A) max
-1.3 V
•) Oszillatorspannung zirka ) 46 ) Ra
0.5 Megohm
Tension d'oscillateur env. }
8.5 V
Für die richtige Oszillatorspannung muss der Strom durch R5
190 µA
courant de
190 MA
Va [1]
250 V
Va [2]
90 V
Va [3]
70 V

Other

Va
250 V
Vg3+S
70 V
Vgl - •
1.5 V
Ja (Vg4 [1]
-1.5 V
Ja (Vg4 [2]
1.6 mA
Sc (la [1]
1.6 mA
Sc (la [2]
6 mA
Sc (Vg4
-25 V
Ri (la
1.6 mA
Vao max [1]
400 V
Vao max [2]
400 V
VaR max [1]
250 V
VaR max [2]
90 V
VaL max [1]
20 V
VaL max [2]
2 mA
a'a max [1]
0.5 W
a'a max [2]
1.3 mA
Vg (3 + 5)0 max = 4O0V Ig2 max
3 mA
Vg (3 + 5)R max [1]
70 V
Vg (3 + 5)R max [2]
0.3 W
Ig (3 + 5) [1]
2.8 mA
Ig (3 + 5) [2]
100000 Ohm