Power Tubes
A wide variety of power tubes and their associated circuitry components all designed for specialty use
FM Power Tubes
Features
FM power tubes for varying specifications which have been optimally designed for maximum performance in FM service applications.
- Consistent maximum performance
- Designed to achieve high gain and high efficiency
- Minimized initial and maintenance costs
- Permits drive levels to be provided by solid state units
Description
FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM)
in order to provide high-quality sound over broadcast radio. For FM broadcasting
applications, Photonis Defense offers power tubes of varying specifications which
have been designed to be used as components in commercial transmitters.
Photonis Defense FM power tubes offer consistent performance with high gain and
efficiency for maximum performance in FM service. The tubes are easily circuited
to a variety of frequency levels and their coaxial terminal design permits operation
in the Transverse Electromagnetic Mode (TEM).
Photonis Defense FM power tubes feature a resonant cavity circuit design that
minimizes the restriction of airflow. The sturdy construction and the thoriated
tungsten filament used in the construction minimizes the number of tube inductances
resulting in a reduced initial and subsequent maintenance costs associated with
modern FM installations. The design of the tube also reduces the number of
stages required for satisfactory operation allowing the system to perform at
maximum levels with the use of simple economical broadband circuit techniques.
Many of the Photonis Defense power tubes can be purchased with all the complete
RF circuits necessary to tune and operate an FM power tube. Our cavities are
designed to match a specific Photonis Defense tube in order to produce a
final high-power amplifier stage for a specific frequency band and service.
Request Documentation
Detailed datasheets, brochures and other reference materials are available upon request.
REQUEST FOR INFORMATIONPower Tube Cavities
For many years, Photonis Defense has been developing specialized circuitry
for power tubes, generally termed “cavities,” as a result of customer demand.
These cavities are complete RF circuits that are necessary to tune and operate a matching power tube.
Each cavity is designed to match a specific tube in order to produce a final high-power amplifier
stage for a specific frequency band and service. Each cavity is an essential part of the
installation and maintenance operations needed for a Photonis Defense Power Tube.
We highly recommend pairing one of our cavities with a recommended matching power tube and can
work with you to determine which power tube cavity your application requires.
Specifications
| Type Number | Power Carrier (W) | Volts | Amps1 | G2 Volts | Gain (dB) |
| 8986 | 15 | 9 | 2.1 | 1200 | 19 |
| 9011 | 30 | 12 | 3.2 | 1200 | 20 |
