Procom DPF 2-4... - Manual

DPF 2/4...
4-Cavity Duplexer for the 160 MHz Band
DESCRIPTION
The DPF 2/4… is a 4-cavity duplex filter for duplex radiotelephones.
This duplexer is delivered in a low band version type DPF 2/4 L, tunable
within 138 - 156 MHz and a high band version type DPF 2/4 H, tunable
within 152 - 175 MHz. These models are again delivered in 3 submodels,
each dedicated to work with a certain duplex spacing. See “Ordering
information” below.
The DPF 2/4… models are primarily intended for equipment, where the
TX and RX operate on single frequencies, but they 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 has very small physical dimensions owing to the use of high-Q,
temperature compensated helical resonators.
The housing is made of extruded aluminium, the chassis of passivated
steel, and teflon insulation has been applied in the rigid coaxial cables
and in the connectors.
The filter is black vinyl-coated to prevent corrosion.
ORDERING DESIGNATIONS
TYPE PRODUCT NO. TUNING RANGE
(MHZ)
DUPLEX SPACING
(MHZ)
DPF 2/4 L-4/6 200000067 138 - 156 4 - 6
DPF 2/4 L-6/8 200000068 6 - 8
DPF 2/4 L-8/10 200000069 8 - 10
DPF 2/4 H-4/6 200000058 152 - 175 4 - 6
DPF 2/4 H-6/8 200000060 6 - 8
DPF 2/4 H-8/10 200000063 8 - 10
SPECIFICATIONS
ELECTRICAL
MODEL DPF 2/4...
TX/RX FREQUENCY DPF 2/4 L : 138 - 156 MHz
DPF 2/4 H : 152 - 175 MHz
MAX. INPUT POWER 50 W
INSERTION LOSS
TX-ANT AND ANT-RX
(at 4.5 MHz duplex spacing)
Single-channel tuned
Multi-channel tuned, 1.5 MHz BW
≤ 1.0 dB (typ. 0.8 dB)
≤ 1.2 dB (typ. 1.0 dB)
TX NOISE SUPPRESSION
ON RX-FREQUENCY
Single-channel tuned
Multi-channel tuned, 1.5 MHz BW
> 60 dB
> 40 dB
RX ISOLATION
ON TX-FREQUENCY
Single-channel tuned
Multi-channel tuned, 1 MHz BW
> 60 dB
> 40 dB
DUPLEX SPACING 4 - 10 MHz (adjustable)
IMPEDANCE Nom. 50 Ω
SWR ≤ 1.5
MECHANICAL
TEMP. RANGE –30° C → +60° C
FREQ. STABILITY Approx. 5 ppm/° C
CONNECTORS UHF-female
DIMENSIONS (L x W x H) 211 x 104 x 33 mm
WEIGHT Approx. 670 g
ORDERING INFORMATION
When ordering, please use the table above to select the appropriate
ordering designation for the desired filter type. If duplex TX and RX
frequencies are stated when ordering, the duplexers are delivered factory
adjusted. If TX and RX frequencies are not stated, the filters are delivered
nonadjusted.
PLEASE NOTE
Special configurations of this filter type may be quoted on request. For
instance, the filter can be delivered with other connector types or with flying
leads (RG 316 coaxial cable) terminated with connectors or for soldering-
connection.