Procom Duplexers
A professional range of VHF and UHF duplex filters designed for duplex transceivers, radiotelephones, mobile systems, and base-station applications. Covering frequency bands from 136–175 MHz and 406–500 MHz, these 6-cavity duplexers are available in multiple models to suit different frequency ranges, duplex spacings, and installation requirements.
The range includes compact VHF filters, high-power VHF base-station duplexers, and UHF duplex filters. Many models are suited to single-frequency Tx/Rx operation, with factory tuning recommended for multichannel applications. Built with high-Q resonator designs, these filters provide reliable duplex isolation, low insertion loss, and dependable performance for demanding radio communication systems.
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 |
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 |
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.
| Model | Frequency | Status |
| DPF 2/6HX150 | 136 - 175 MHz | Stocked item |
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 | 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-4/6 N | 6 - 8 MHz | 138 - 156 MHz | By order |
| DPF 2/6 H-4/6 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 |
