CV2453 low noise RF triode amplifier
 |
This valve measures 54x19mm overall and has a B9A base. |
The EVS data states this valve was replaced by CV4105
| Heater voltage | 6.3V |
| Heater current | 370mA |
| Max anode voltage | 250V |
| Max anode dissipation | 2.5W |
| Max cathode current | 20mA |
| Max heater cathode voltage | 100V |
| Mutual conductance * | 15mA/V |
| Capacitances (in close fitting metal screen) | |
| Cge nom | 3.55pF |
| Cae nom | 0.055pF |
| Cag nom | 1.6pF |
| Typical operating conditions: Class A UHF grounded grid amplifier | |
| Anode voltage | 130V |
| Grid voltage | -1V |
| Anode current | 16mA |
| Power gain | 10db |
| Bandwidth | 50MHz |
| Noise factor | |
| 900MHz | 11.5db |
| 800MHz | 10.9db |
| 700MHz | 10.2db |
| 600MHz | 9.4db |
| 500MHz | 8.4db |
*: Mutual conductance measured at Va=180V, RL=3.3k ohms, Rk=68 ohms, in a mutual conductance bridge max frequency 1kHz, max input signal to grid 100mV RMS.
Power gain and bandwidth may be adjusted by altering the coupling between the anode line and the output loop. Under the typical conditions shown above the relationship between power gain and bandwidth at 900MHz is:
| Power gain | Bandwidth |
| 6db | 100Mhz |
| 8db | 70MHz |
| 10db | 50MHz |
| 12db | 37MHz |
| 14db | 30MHz |
| 16db | 25MHz |
| Pin | Function |
| 1 | Grid |
| 2 | Cathode |
| 3 | Grid |
| 4 | Grid |
| 5 | Anode |
| 6 | Grid |
| 7 | Heater |
| 8 | Heater |
| 9 | Grid |