Procom DPF 4-8-s-4-13 - Manual

DPF 4/8 S-4/13
8-Resonator Duplexer for the 80 MHz Band
DESCRIPTION
The DPF 4/8 S-4/13 is an 8-resonator duplex filter for duplex
radiotelephones.
This 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 duplexer can be tuned within the complete 66 - 88 MHz range with
a duplex separation between 4 and 13 MHz.
The filter has very small physical dimensions owing 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 4/8 S-4/13 200000258
SPECIFICATIONS
ELECTRICAL
MODEL DPF 4/8 S-4/13
TX/RX FREQUENCY 66 - 88 MHz
MAX. INPUT POWER 50 W
INSERTION LOSS TX-ANT AND ANT-RX
(at 4 MHz duplex spacing)
Single-channel tuned
Multi-channel tuned, 1.4 MHz BW
≤ 1.0 dB
≤ 1.2 dB
TX NOISE SUPPRESSION ON RX-FREQUENCY
Single-channel tuned
Multi-channel tuned, 1.4 MHz BW
> 100 dB
> 60 dB
RX ISOLATION ON TX-FREQUENCY
Single-channel tuned
Multi-channel tuned, 1.4 MHz BW
> 100 dB
> 60 dB
DUPLEX SPACING 4 - 13 MHz (adjustable)
IMPEDANCE Nom. 50 Ω
SWR ≤ 1.5
MECHANICAL
TEMP. RANGE –30° C → +60° C
FREQ. STABILITY Approx. 9 ppm/° C
CONNECTORS BNC-female
DIMENSIONS (L x W x H) 168 x 208 x 33 mm
WEIGHT Approx 1060 g
TYPICAL RESPONSE CURVES @ 4 MHz DUPLEX SPACING
PLEASE NOTE
Special configurations of this filter type may be quoted on request. As an
example, the filter can be delivered with the resonators stacked 4 over 4,
thereby accomodating special space restrictions. In this case the filter
designation is DPF 4/44 S.
PROCOM A/S reserve the right to amend specifications
without prior notice.
14/01/11