https://www.traditionrolex.com/22

140-174 MHz
Bandpass filters PF12-1V

Electrical specifications
Model PF12-1V
Operating Frequency band, MHz 140-174
Insertion loss (adjustable), dB 0,5-3
Impedance, Ohm 50
Attenuation see fig.
VSWR, not more than 1,2
Input power, not more, W not more than 350
Temperature Range, °C from -30 to +60
Cavity electrical length 1/4λ
Mechanical specifications
Model PF12-1V PF12-2V
Diameter, mm (ins.) 308x308 (12"x12")
Weight, kg 8 16,2
Connector N-female/ 7/16DIN
Dimensions (LxWxH), mm 270x270x800 630x270x800

This is the most "cavity" resonator, manufactured by our company. Initially designed for aircraft range 118-136 MHz low-loss transmitter combiner, it has "settled down" in commercial range, also. It is successfully used for filtration of paging transmitters signals and receiving lowest loss during channel multiplexing of tranking repeaters with low frequency separation, due to its highest Q-factor (900 @ -1.0 dB).


Typical selectivity characteristics

PF12-1V

PF12-2V

Finland, Pulsa