| GS-23b |
| Tetrode |
The GS-23B power tetrode generates and amplifies power at up to 1,000 MHz in RF equipment. The
GS-23b is generally considered to be similar to the 4CX1600U. Some of these tubes function
very well in the 23cm band; a limited sampling of about three dozen tubes shows approximately
one in six, (+/-) will work at 1296MHz. The detailed description of a 23cm GS-23B 1350W PA is
HERE. A means to water cool the
GS-23B is HERE.
|
| GENERAL | ||
| Cathode: indirectly heated, oxide-coated. | ||
| Envelope: metal-ceramic. | ||
| Cooling: Forced Air (on with heater, off 5 min after shut down). | anode | 190 m3/hr |
| cathode | 20 m3/hr | |
| Height, mm, at most: | 120 | |
| Diameter, mm, at most: | 92 | |
| Mass, Kg, at most | 1.1 | |
|
|
 A - anode; C1 - grid 1; 1 - heater; KP - cathode & heater; C2 - grid 2; |
| ENVIRONMENTAL OPERATING CONDITIONS | |
Vibration loads: |
|
| frequency, Hz | 10-200 |
| acceleration, m/s² | 39 |
| Multiple impacts with acceleration, m/s² | 342 |
| Ambient Conditions: | |
| Temperature, °C | -60 to +50 |
| Relative humidity at up to +40 °C, % | 98 |
| NOMINAL ELECTRICAL PARAMETERS | |
| Heater voltage, V | 6.3 (5.7 @ 1GHz) |
| Heater current, A | 6.25 |
| Mutual conductance (Va = 1.25KV, Vg2 = 400V, Ia = 900mA), mA/V: | 55 |
| Negative cutoff bias (Vg1) with Va = 1.25KV, Vg2 = 400V, Ia = 10mA, V: | 47.5 |
| input capacitance, pF | 33 |
| output capacitance, pF | 11.5 |
| transfer capacitance, pF | <0.025 |
| Warm up time, s: | <210 |
| Designed Tube Life (hours) | >1000 |
| ELECTRICAL PARAMETER LIMITS | |
| Heater voltage, V, Nominal / @ 1 GHz | 5.7-7 / 5.1-6.3 |
| Heater current, A | 5.9-6.6 |
| Mutual conductance (Va = 2.1KV, Vg2 = 400V, Ia = 1A,), mA/V: | 40-70 |
| Average grid voltage (Vg1) with Va = 1.25KV, Vg2 = 400V, Ia = 900mA, V: | -12 |
| Grid voltage (Vg1) with Va = 1.25KV, Vg2 = 400V, Ia = 900mA, V: | -2 to -22 |
| Cutoff bias (Vg1) with Va = 1.25KV, Vg2 = 400V, Ia = 10mA, V: | -30 to -65 |
| Maximum (absolute value) of negative Grid voltage (Vg1), V | 150 |
| input capacitance, pF | 28-38 |
| output capacitance, pF | 9.5-13.5 |
| Maximum CW Anode voltage (Va), KV: | 2.5 |
| Maximum Peak Anode voltage (Va), KV: | 3.5 |
| Maximum Pulsed (17% duty cycle) Anode voltage (Va), KV: | 4.5 |
| Maximum Screen Grid voltage (Vg2), V | 500 |
| CW cathode current (Ic), A: | 1.2 |
| Maximum pulsed (17% duty cycle) cathode current (Ic), A: | 1.45 |
| Anode Dissipation, W: | 1500 |
| Screen Grid (G2) Dissipation, W: | 12 |
| Control Grid (G1) Dissipation, W: | 1.5 |
| Temperature at envelope (hottest point), °C | 200 |
| Frequency, MHz: | <1000 |
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| Averaged Characteristic Curves | |
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| Averaged Anode Characteristic Curves | |
More Averaged Anode Characteristic Curves to be added here.