Mega Industries FM HDR Branch Combiners are used to combine up to 3 FM channels into a single master antenna.
All Mega filters are designed with HD Radio in mind, the optimized passband covering the complete FM channel (±200kHz). In addition to a flat “in-band” response, all Mega branch combiners provide a minimum of 50dB isolation between transmitters to ensure conformance to all regulatory requirements. The addition of the cross coupling option to the filters allows a channel spacing of 800 kHz to be readily achievable.
Special configurations available, for information contact the sales department.
FM HDR Branch Combiner Power Level Options
Up to 3kw
Typical Electrical Performance
VSWR +/- 200 kHz: 1.05:1
Insertion Loss (+/- 200 kHz): < 0.50 dB Nominal
Isolation: > 50 dB
Group Delay: < +45ns
3kW 3-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 2.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 3
Power per Input: 3 kW
Cavity size: 6″
Weight: 128 lbs (58.0 kg)
3kW 4-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 1.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 4
Power per Input: 3 kW
Cavity size: 6″
Weight: 192 lbs (87.1 kg)
Options:
Stations: 2 station, 3 station
Input: Type N, 7/16 DIN, 7/8, 1-5/8
Output: 7/8, 1-5/8
Up to 5kW
Typical Electrical Performance
VSWR +/- 200 kHz: 1.05:1
Insertion Loss +/- 200 kHz: < 0.50 dB Nominal
Isolation: > 50 dB
Group Delay: < +45ns
5kW 3-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 2.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 3
Power per Input: 5 kW
Cavity size: 6″ with cooling fan
Weight: 136 lbs (61.7 kg)
5kW 4-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 1.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 4
Power per Input: 5 kW
Cavity size: 6″ with cooling fan
Weight: 200 lbs (90.7 kg)
Options:
Stations: 2 Station, 3 Station
Input: Type N, 7/16 DIN, 7/8, 1-5/8
Output: 7/8, 1-5/8
Up to 12kW
Typical Electrical Performance
VSWR +/- 200 kHz: 1.05:1
Insertion Loss +/- 200 kHz: < 0.30 dB Nominal
Isolation: > 50 dB
Group Delay: < +45ns
12kW 3-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 2.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 3
Power per Input: 12 kW
Cavity size: 12″
Weight: 287 lbs (130.1 kg)
12kW 4-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 1.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 4
Power per Input: 12 kW
Cavity size: 12″
Weight: 437 lbs (198.1 kg)
Options:
Stations: 2 Station, 3 Station
Input: 1-5/8, 3-1/8
Output: 1-5/8, 3-1/8
Up to 35kW
Typical Electrical Performance
VSWR +/- 200 kHz: 1.05:1
Insertion Loss +/- 200 kHz: < 0.20 dB Nominal
Isolation: > 50 dB
Group Delay: < +45ns
35kW 3-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 2.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 3
Power per Input: 35 kW
Cavity size: 24″
Weight: 640 lbs (290.1 kg)
35kW 4-Cavity Branch Combiner
Minimum Frequency Spacing without cross coupling: 1.8 MHz
Minimum Frequency Spacing with cross coupling: 0.8 MHz
Cavities: 4
Power per Input: 35 kW
Cavity size: 24″
Weight: 812 lbs (812.1 kg)
Options:
Stations: 2 Station, 3 Station
Input: 3-1/8
Output: 3-1/8, 4-1/16, 6-1/8
