The DPF 2/44… is a 8-cavity duplex filter for duplex radio transceivers.
This duplexer is delivered in a low band version type DPF 2/44 L,
tunable within 138 - 156 MHz and a high band version type DPF 2/44 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 2/44… models are primarily intended for equipment, where the
TX and RX operate on several channels, i.e. within a certain port
bandwidth.
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 2/44 L-4/6-N 200002379 138 - 156 4 - 6
DPF 2/44 L-6/8-N 200002380 138 - 156 6 - 8
DPF 2/44 L-8/10-N 200002381 138 - 156 8 - 10
DPF 2/44 H-4/6-N 200002382 152 - 175 4 - 6
DPF 2/44 H-6/8-N 200002383 152 - 175 6 - 8
DPF 2/44 H-8/10-N 200002384 152 - 175 8 - 10
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
non-adjusted.
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.
SPECIFICATIONS
ELECTRICAL
MODEL DPF 2/44...
TX/RX FREQUENCY DPF 2/44 L : 138 - 156 MHz
DPF 2/44 H : 152 - 175 MHz
MAX. INPUT POWER 50 W
INSERTION LOSS TX-ANT AND ANT-RX
(at 4 MHz duplex spacing)
Multi-channel tuned, 1.5 MHz BW
Multi-channel tuned, 5 MHz BW
≤ 1.4 dB (typ. 1.2 dB)
≤ 1.4 dB (typ. 1.2 dB)
TX NOISE SUPPRESSION ON RX-FREQUENCY
Multi-channel tuned, 1.5 MHz BW
Multi-channel tuned, 5 MHz BW
> 90 dB
> 65 dB
RX ISOLATION ON TX-FREQUENCY
Multi-channel tuned, 1.5 MHz BW
Multi-channel tuned, 5 MHz BW
> 90 dB
> 65 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 N-female
DIMENSIONS (L x W x H) With connector 215 x 105 x 54 mm
WEIGHT Approx. 1100 g
TYPICAL RESPONSE CURVES @ 4 MHz DUPLEX SPACING & 1,5 BW
Commentaires sur ces manuels