37-50 MHz Mobile duplexers MDF-6LB : Radial :

Electrical specifications

Model	MDF-6LB(M)	MDF-6LB(H)
Operating Frequency band, MHz	37-44	42.5-50
Insertion loss (adjustable) not more, dB	1.5
Frequency separation TX/RX (min), MHz	3
Impedance, Ohm	50
Isolation, not less, dB	90
VSWR, not more than	1,5
Input power, not more, W	not more than 150
Temperature Range, °C	from -30 to +50

For the operation of repeaters in low-frequency range VHF we have developed and launched the manufacturing of a duplexer on the spiral resonators. Two model of duplexers are being produced: MDF-6LB(M) - for the range 37-44 MHz and MDF-6LB(H) - for the upper range 42,5-50 MHz. With the separation of 3-4-MHz they provide a fully-duplex mode of operation of mobile radio stations at minimum losses and standard output power 150 Wt. This construction is significantly less in sizes than the fully-sized duplexer made on the basis of of the volume resonators. The duplexer MDF-6LB is recommended to be used jointly with our new antenna GPW-1LB.

37-50 MHz Mobile duplexers MDF-6LB

Electrical specifications

Mechanical specifications

Typical MDF-6LB(M) duplexer response curves

MDF-6LB(M)

MDF-6LB(H)

MDF-6LB(M)

MDF-6LB(H)

37-50 MHz Mobile duplexers MDF-6LB

Electrical specifications

Mechanical specifications

Typical MDF-6LB(M) duplexer response curves MDF-6LB(M) MDF-6LB(H)

MDF-6LB(M)

MDF-6LB(H)

Typical MDF-6LB(M) duplexer response curves

MDF-6LB(M)

MDF-6LB(H)