GENERAL DESCRIPTION |
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RCA-7094 is a high-perveance beam power tube with high power gain. It is useful in fixed and mobile equipment as an rf power amplifier and oscillator, as well as an af power amplifier and modulator. The 7094 has a maximum plate dissipation of 125 watts under ICAS conditions in modulator service and in cw service. In the latter service it can be operated with full input to 60 Mc and with reduced input to 175 Mc. Because of its high power gain, the 7094 can be operated with relatively low plate voltage to give large power output with small driving power. Small and compact for its power-output capability, the 7094 has a rugged button-stem construction with short internal leads, internal shield connected to grid No.2 within the tube, triple base-pin connections for grid No.2 to permit effective rf grounding, plate structure with large radiating fins for effective cooling, and ceramic mount supports to provide additional sturdiness to the electrode structure. The plate lead is brought out of bulb to a rigid terminal opposite the base to facilitate separation of input and output circuits. |
TECHNICAL SPECIFICATIONS | |
ELECTRICAL | |
Heater, for Unipotential Cathode: Voltage (AC or DC) Current at 6.3 volts |
6.3 ± 10% volts 3.2 amperes |
Transconductance (Approx.) for plate volts = 300, grid-No.2 volts = 300, and plate ma = 250 |
10000 μmhos |
Mu-Factor, grid No.2 to grid No.1 for plate volts = 300, grid-No.2 volts = 300, and plaste ma = 250 |
7 |
Direct Interelectrode Capacitances (With no external shield): Grid No.1 to plate Grid No.1 to Grid No.2 & internal shield Grid No.1 to cathode and heater Grid No.2 & internal shield to plate Grid No.2 & internal shield to cathode and heater Plate to cathode and heater |
0.5 μμf 9 μμf 9 μμf 9 μμf 2.8 μμf 1.8 μμf |
MECHANICAL | |
Operating Position | Any |
Maximum Overall Length | 5" |
Seated Length | 4.44" ± 0.08" |
Maximum Diameter | 2.56" |
Base | Jumbo-Button Septar 7-Pin (JETEC No.E7-46) |
Socket | NATIONAL HX29 |
Weight (Approx.) | 6 oz |
Bulb Temperature (At hottest point) | 250 Max. °C |
Cooling |
Free circulation of air around the tube is re- quired. Under operating conditions at maximum ratings, some forced-air cooling will be required from a small fan to prevent exceeding the speci- fied maximum bulb temperature. |
Specifications may change without notice |
THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
Manufacturer | Transmitter specifications | Power in kW |
RCA | BHF-100A | 100 |
BHF-100B | 100 |
THIS TUBE IS AVAILABLE FROM | ||
Manufacturer | Rebuilder | Distributor |
Richardson Electronics | ||
Vacuum Tubes, Inc. |
PRICE LEVEL (US$) | |||||
1 | 2 | 3 | 4 | 5 | 6 |
0 - 10 | 10 - 100 | 100 - 1000 | 1000 - 10,000 | 10,000 - 50,000 | 50,000 - 100,000 |