Micro Communications (MCi) offers a full range of Broadcast FM products, including channel combiners, switchless combiners and FM IBOC injectors in a variety of configurations. MCi supplies all standard and custom components for low and high-power stations in all broadcast bands, from the transmitter output to the antenna.
FM Constant Impedance Combiner Module
The number of cavities in these combiners is determined by the spacing between the channels being combined. The cavities are constructed using temperature compensated materials to ensure good stability. The combiner module consists of a number of precision bandpass cavities and coaxial hybrids that ensure excellent performance. In a multi-channel combining system one module is dedicated to each channel. Optional equipment may include provisions such as patch panels or switches, input test load ports, custom framing systems, N+1 systems, and more.
- Low Loss
- Low VSWR
- Constant Impedance Design
- High Isolation
- High Power Handling
- Standalone Filter
Broadcast FM Products: Switchless Combiners
MCI Broadcast FM Switchless Combiners are designed to combine and/or switch two transmitter inputs to one output or either transmitter to either output. The switching is done under full power without interruption of programming.
MCI now extends their line of high power Switchless combiners to the FM range. The new FM Switchless combiner insures that maximum output power is available at the antenna at all times. Switching between modes is done by the simple push of a button. Contacting and non-contacting designs are available. Contacting phase shifters, using sliding finder stock, is the more economical of the two designs.
The mode chart shows the changes in power to either output port as the phase shifter is moved through its positions. The unit’s positions are factory pre-set. A microprocessor controller with momentary push-button user contacts controls the single motor drive and allows for remote switching.
FM Switchless Combiner: Design Features & Specifications
- No Loss of Air Time
- Switches Under Power
- High Isolation
- FM Applications to 125 kW
- Microprocessor Control
- Active Main / Standby
| VSWR: | < 1.10 |
| Insertion Loss: | < 0.10 dB |
| Isolation: | > 40 dB |
FM Digital IBOC Injector
- HD Radio Ready
- Broadband (88 – 108 MHz)
- 3 – 1/8″ EIA Coax In and Out (other sizes available)
- Tailored Coupling Values Available
Electrical Specifications
| Power Rating: | 40 kW* |
| Isolation: | > 35 dB |
| VSWR: | 1.08 : 1 |
To learn more about Micro Communications (MCi) Broadcast FM products, please contact us at sales@microwavetechniques.com
