Procom BPF 70-3 - Manual

BPF 70/3
Band-Pass Filter for the 70 cm Band
DESCRIPTION
The BPF 70/3 is a 3-¼ λ resonator band-pass filter with internal
coupling between the resonators.
This filter can be used as a preselector to protect a receiver against
interference from transmissions out of the passband, or it can be used
to reduce spurious output from a transmitter with up to 50 W output
power.
The filter can be tuned within the entire 406 - 470 MHz band. Careful
design and choice of materials ensure reliable operation over a wide
temperature range.
The housing is made of extruded aluminium, the chassis of brass, and
teflon insulation has been used in the coaxial cables and in the
connectors.
The filter is black vinyl coated to prevent corrosion.
ORDERING DESIGNATIONS
TYPE PRODUCT NO.
BPF 70/3 200000896
SPECIFICATIONS
ELECTRICAL
MODEL BPF 70/3
FILTER TYPE Band-pass filter
TUNING RANGE 406 - 470 MHz
MAX. INPUT POWER 50 W
INSERTION LOSS ≤ 1.4 dB (typ.)
ATTENUATION AROUND PASS-BAND See curves
OUT OF BAND ATTENUATION See curves
IMPEDANCE Nom. 50 Ω
SWR ≤ 1.5
MECHANICAL
TEMP. RANGE –30° C → +60° C
CONNECTORS BNC-female (others on request)
DIMENSIONS (L x W x H) 230 x 77 x 33 mm
WEIGHT Approx. 550 g
TYPICAL RESPONSE CURVES
PROCOM A/S reserve the right to amend specifications
without prior notice.
10/03/11