- The DPF 2/6-SHT-… is a 6-cavity duplex filter for duplex radiotelephones.
- This duplexer is delivered in a low band version type
DPF 2/6-SHT- L, tunable within 175 - 200 MHz, medium band version type DPF 2/6-SHT-M, tunable within 200 - 230 MHz and a high band version type DPF 2/6-SHT-H, tunable within 230 - 260 MHz. These models are again delivered in 3 submodels, each dedicated to work with a certain duplex spacing.
See ordering information under the tab "Specifications" below. - The DPF 2/6-SHT-… 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 coated with black vinyl to prevent corrosion.
Duplex FiltersDPF 2/6-SHT-...
6-Cavity Duplexer for the 175 - 250 MHz Band
Description
Specifications
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Diagram and Mounting
TYPICAL RESPONSE CURVES @ 4.5 MHz DUPLEX SPACING
TYPICAL RESPONSE CURVES @ 9 MHz DUPLEX SPACING
Ordering Designations
| Model | Product No. | Description | Frequency | |
|---|---|---|---|---|
| DPF 2/6-SHT-L-4/6-N(f) | 200001852 | SPACING: 4 - 6 MHz | 175 - 200 MHz | |
| DPF 2/6-SHT-L-6/8-N(f) | 200001853 | SPACING: 6 - 8 MHz | 175 - 200 MHz | |
| DPF 2/6-SHT-L-8/10-N(f) | 200001854 | SPACING: 8 - 10 MHz | 175 - 200 MHz | |
| DPF 2/6-SHT-M-4/6-N(f) | 200001855 | SPACING: 4 - 6 MHz | 200 - 230 MHz | |
| DPF 2/6-SHT-M-6/8-N(f) | 200001856 | SPACING: 6 - 8 MHz | 200 - 230 MHz | |
| DPF 2/6-SHT-M-8/10-N(f) | 200001857 | SPACING: 8 - 10 MHz | 200 - 230 MHz | |
| DPF 2/6-SHT-H-4/6-N(f) | 200001858 | SPACING: 4 - 6 MHz | 230 - 260 MHz | |
| DPF 2/6-SHT-H-6/8-N(f) | 200001859 | SPACING: 6 - 8 MHz | 230 - 260 MHz | |
| DPF 2/6-SHT-H-8/10-N(f) | 200001860 | SPACING: 8 - 10 MHz | 230 - 260 MHz |
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 duplexer are delivered factory adjusted. If Tx and Rx frequencies are not stated, the filters are delivered non-adjusted.
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.
Typical Response Curves @ 4.5 MHz Duplex Spacing
Typical Response Curves @ 9 MHz Duplex Spacing
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