Accessories for DMR radios and repeaters
The DPF 2/6H-4/6N is a 6-cavity duplex filter for duplex transceivers and can be adjusted within the complete 152-175 MHz band and has a duplex spacing of 4-6 MHz.
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The DPF 2/6H-4/N is 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 coated with black vinyl to prevent corrosion.
| ELECTRICAL | |
|---|---|
| MODEL | DPF 2/6H-4/6N |
| TX/RX FREQUENCY | 152 - 175 MHz |
| MAX. INPUT POWER | 50 W |
| TX NOISE SUPPRESSION ON RX-FREQUENCY | |
| Single-channel tuned: | > 80 dB |
| Multi-channel tuned, 1.5 MHz BW: | > 60 dB |
| INSERTION LOSS TX-ANT AND ANT-RX | |
| Single-channel tuned: | < 1.2 dB (typ. 1.0 dB) |
| Multi-channel tuned, 2 MHz BW: | < 1.2 dB (typ. 1.0 dB) |
| RX ISOLATION ON TX-FREQUENCY | |
| Single-channel tuned: | > 80 dB |
| Multi-channel tuned, 1.5 MHz BW: | > 60 dB |
| IMPEDANCE | Nom. 50 Ω |
| SWR (All ports) | < 1.5:1 |
| MECHANICAL | |
| CONNECTIONS | N-female BNC(f), TNC(f), UHF(f), SMA(f) on request |
| DIMENSIONS (L x W x H) | 211 x 154 x 33 mm |
| WEIGHT | Approx. 940 g / 2.07 lb. |
| ENVIRONMENTAL | |
| TEMP. RANGE | –30°C ÷ 60°C |
