Procom DPF 8-6-4-8 - Manual

DPF 8/6-4/8
6-Resonator Duplexer for the 8 m Band
DESCRIPTION
The DPF 8/6-4/8 is a 6-resonator duplex filter for duplex
radiotelephones.
The filter is primarily intended for equipment where the TX and the RX
operate on single frequencies, but it can also, however with slightly
reduced data, be used where the TX and RX operate on several
channels, i.e. within a certain port bandwidth. In the last case, factory-
tuning is recommended.
The filter can be tuned within the 34 - 42 MHz band with a duplex
separation between 4 and 8 MHz.
The filter has very small dimensions due to the use of high-Q,
temperature compensated helical resonators with discrete-component
interconnections.
The housing is made of extruded aluminium, the chassis of passivated
steel, and the connectors are provided with teflon insulation.
The filter is black vinyl-coated to prevent corrosion.
ORDERING DESIGNATIONS
TYPE NO. PRODUCT NO.
DPF 8/6-4/8 200000450
SPECIFICATIONS
ELECTRICAL
MODEL DPF 8/6-4/8
TX/RX FREQUENCY 34 - 42 MHz
MAX. INPUT POWER 50 W
INSERTION LOSS TX-ANT AND ANT-RX
(at 4 MHz duplex spacing)
Single-channel tuned
Multi-channel tuned, 0.6 MHz BW
≤ 0.8 dB
≤ 1.2 dB
TX NOISE SUPPRESSION ON
RX-FREQUENCY
Single-channel tuned
Multi-channel tuned, 0.6 MHz BW
> 80 dB
≥ 60 dB
RX ISOLATION ON TX-FREQUENCY
Single-channel tuned
Multi-channel tuned, 0.6 MHz BW
> 80 dB
> 60 dB
DUPLEX SPACING 4 - 8 MHz
IMPEDANCE Nom. 50 Ω
SWR ≤ 1.5
MECHANICAL
TEMP. RANGE –30° C → +60° C
FREQ. STABILITY Approx. 15 ppm/° C
CONNECTORS BNC-female
DIMENSIONS (L x W x H) 215 x 154 x 33 mm
WEIGHT Approx 900 g
Typical response curves @ 4 MHz duplex spacing
PLEASE NOTE!
Duplex filters with other connector types or duplexers similar to the DPF
8/6-4/8, but with other TX/RX frequencies, can be quoted on request.
PROCOM A/S reserve the right to amend specifications
without prior notice.
20/12/12