DPF 70/6
The DPF 70/6 is a 6-cavity duplex filter for duplex transceivers.
The DPF 70/6 can be adjusted within the complete 406 – 500 MHz band. The duplexer can be delivered in four different versions according to required duplex spacing.
The DPF 70/6 is primarily intended for equipment where the Tx and Rx operate on single frequencies, but it can also, however with slightly reduced data, be used where the Tx and Rx operate on multi channels, i.e. within a certain port bandwidth. In the last case, factory-tuning is recommended.
| Model variations | Frequency | Status |
|---|---|---|
| DPF 70/6-5/7 N | 5 – 7 MHz | Stocked item |
| DPF 70/6-7/9 N | 7 – 9 MHz | In Stock |
| DPF 70/6-9/13 N | 9 – 13 MHz | By order |
| DPF 70/6-13/16 N | 13 – 16 MHz | By order |
The filter uses full-length ¼ λ cavities in a compact extruded aluminium housing. The chassis is made of passivated steel, and teflon insulation has been applied in the coaxial cables and in the connectors.
DPF 70/6 is coated with black vinyl to prevent corrosion.
| Electrical | ||
|---|---|---|
| Frequency | 406 – 500 MHz | |
| Max Input Power | 50 W | |
| Special spec. info | Single-channel tuned: | Multi-channel tuned, BW = 2 MHz: |
| Insertion Loss | < 1.2 dB (typ. 1.0 dB) | <1.2 dB (typ. 1.0 dB) |
| Tx Noise suppression on Rx frequency | > 85 dB | > 65 dB |
| Isolation Rx on Frequency Tx | > 85 dB | > 65 dB |
| Impedance | 50 Ohm | |
| Reject Attenuation | See curve | |
| VSWR | < 1.5:1 |
| Mechanical | |
|---|---|
| Connection(s) | N type (BNC, TNC, UHF or SMA on request) |
| Dimensions | 226 x 154 x 33 mm (incl. connectors) |
| Weight | 0.99 Kg |
DPF 2/6-150
The DPF 2/6-150 is a 6-cavity high-power, base-station duplex filter for the frequency band 138 – 175 MHz.
The duplexer is delivered in two basic models:
Model DPF 2/6-150 L can be tuned within the band 138 – 156 MHz and model DPF 2/6-150 H within the band 152 – 175 MHz, both with a nominal duplex separation of 4.5 MHz.
This filter type uses enlarged (40 x 40 mm), full quarter-wavelength cavities with silver-plated, temperature compensated resonator elements. The high Q’s obtainable in these cavities enable the filter to work with very narrow duplex spacing while at the same time keeping low insertion losses. Further, duplex isolation is improved at medium spacings.
| Model | Spacing | Frequency | Status |
|---|---|---|---|
| DPF 2/6-150L-1/2 N | 1 – 2 MHz | 138 – 156 MHz | Stocked item |
| DPF 2/6-150L-2/4 N | 2 – 4 MHz | 138 – 156 MHz | Stocked item |
| DPF 2/6-150L-4/6 N | 4 – 6 MHz | 138 – 156 MHz | By order |
| DPF 2/6-150H-1/2 | 1 – 2 MHz | 152 – 175 MHz | By order |
| DPF 2/6-150H-2/4 | 2 – 4 MHz | 152 – 175 MHz | By order |
| DPF 2/6-150H-4/6 | 4 – 6 MHz | 152 – 175 MHz | By order |
The enlarged dimensions also improve the power-handling capability of the filter as insulation distances at high-voltage points are increased, and the inevitable power dissipation (which always will be present though insertion loss is kept to a minimum) will be distributed over a larger area. The filter is capable of working continuously at a power level of 150 W.
The DPF 2/6-150 is primarily intended for equipment, where the TX and RX operate on single frequencies, but it can also, 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 housing is made of extruded aluminium, the chassis of passivated steel, and the rigid coaxial cables and the connectors are provided with teflon insulation.
DPF 2/6-150 is coated with black vinyl to prevent corrosion.
| Electrical | ||
|---|---|---|
| Frequency | L: 138 – 156 MHz H: 152 – 175 MHz | |
| Max Input Power | 150 W | |
| Special spec. info | Single-channel tuned: | Multi-channel tuned, BW = 2 MHz: |
| Insertion Loss | < 1.2 dB (typ. 1.0 dB) | <1.4 dB (typ. 1.2 dB) |
| Tx Noise suppression on Rx frequency | > 80 dB | > 60 dB |
| Isolation Rx on Frequency Tx | > 80 dB | > 60 dB |
| Impedance | 50 Ohm | |
| Duplex Spacing | 1 – 10 MHz | |
| VSWR | < 1.5:1 |
| Mechanical | |
|---|---|
| Connection(s) | N type (BNC, TNC, UHF or SMA on request) |
| Dimensions | 519.5 (excl. connectors) x 250 x 50 mm |
| Weight | 4.5 Kg |
DPF 2/6HX150
The DPF 2/6-HX-150 is a six-cavity high-power mobile or base station duplexer for the 136 – 175 MHz band.
This type of filter uses six large 40 x 40 mm cavities, all equipped with 3.5 mm silver-plated helical resonators, diameter 19 mm. The use of large cavities and resonators means higher Q, resulting in smaller duplex spacing with lower loss.
The larger dimensions extend power rating to 100 W continuous.
The DPF 2/6-HX-150 is designed for single-channel equipment, but can, with slightly reduced specification, be broadband-adjusted to allow multichannel equipment to be used.
Please specify the frequencies for Tx and Rx when ordering.
| Model | Frequency | Status |
|---|---|---|
| DPF 2/6HX150 | 136 – 175 MHz | Stocked item |
The cavities are made of extruded aluminium, the chassis of passivated steel. All coaxial cables are of the semi-rigid type, and teflon has been used in all connectors and cables.
The filter is black vinyl coated to prevent corrosion.
| Electrical | |
|---|---|
| Frequency | 136 – 175 MHz |
| Max Input Power | 100 W @ 1 dB insertion loss |
| Min Duplex spacing | 1.3 MHz |
| Insertion Loss | @ 1.3 MHz spacing: 1.5 dB @ 2.0 MHz spacing: 1.2 dB @ 3.0 MHz spacing: 1.0 dB |
| Impedance | 50 Ohm |
| Tx noise suppression on Rx-freq. / Rx isolation on Tx Freq. | @ 1.3 MHz spacing: 60 dB @ 2.0 MHz spacing: 85 dB @ 3.0 MHz spacing: 100 dB |
| VSWR | < 1.5:1 |
| Mechanical | |
|---|---|
| Connection(s) | N type (BNC, TNC, UHF or SMA on request) |
| Dimensions | 185 x 250 x 50 mm |
| Weight | 2.1 Kg |
DPF 2/6
The DPF 2/6 is a 6-cavity duplex filter for duplex radiotelephones.
This duplexer is delivered in a low band version type DPF 2/6 L, tunable within 138 – 156 MHz and a high band version type DPF 2/6 H, tunable within 152 – 175 MHz. These models are again delivered in 3 submodels, each dedicated to work with a certain duplex spacing.
The DPF 2/6 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.
| Model variations | Spacing | Frequency | Status |
|---|---|---|---|
| DPF 2/6 L-4/6 N | 4 – 6 MHz | 138 – 156 MHz | By order |
| DPF 2/6 H-4/6 N | 4 – 6 MHz | 152 – 175 MHz | By order |
| DPF 2/6 L-6/8 N | 6 – 8 MHz | 138 – 156 MHz | By order |
| DPF 2/6 H-6/8 N | 6 – 8 MHz | 152 – 175 MHz | By order |
| DPF 2/6 L-8/10 N | 8 – 10 MHz | 138 – 156 MHz | By order |
| DPF 2/6 H-8/10 N | 8 – 10 MHz | 152 – 175 MHz | By order |
| DPF 2/6 H-13/20 N | 13 – 20 MHz | 152 – 175 MHz | By order |
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 | ||
|---|---|---|
| Frequency | L: 138 – 156 MHz H: 152 – 175 MHz | |
| Max Input Power | 50 W | |
| Special spec. info | Single-channel tuned: | Multi-channel tuned, BW = 2 MHz: |
| Insertion Loss | < 1.2 dB (typ. 1.0 dB) | <1.2 dB (typ. 1.0 dB) |
| Tx Noise suppression on Rx frequency | > 80 dB | > 60 dB |
| Isolation Rx on Frequency Tx | > 80 dB | > 60 dB |
| Impedance | 50 Ohm | |
| Duplex Spacing | 4 – 10 MHz (adjustable) | |
| VSWR | < 1.5:1 |
| Mechanical | |
|---|---|
| Connection(s) | N type (BNC, TNC, UHF or SMA on request) |
| Dimensions | 211 x 154 x 33 mm |
| Weight | 0.94 Kg |
