Ordering information
When ordering, please state Tx and Rx frequencies. If Tx and Rx frequencies are not stated, the filters are delivered non-adjusted.
DPF VHF/33-DR 3000
6-Cavity Duplexer for the 160 MHz band for installation inside Motorola DR 3000 base station / repeater
Description
- The DPF VHF/33-DR 3000 is a 6-cavity duplex filter designed to be built into the Motorola DR 3000 duplex base station / repeater.
- This duplexer is delivered in a low-band version,
- DPF VHF/33-DR 3000-L, tunable within 138 – 156 MHz, and a high band
- version, DPF VHF/33-DR 3000-H, tunable within 152 – 175 MHz. The duplexer can delivered with 4 – 10 MHz spacing.
- The DPF VHF/33-DR 3000 is primarily intended for Tx and Rx operation on single frequencies, but it 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 latter case, factory tuning is recommended.
- The filter has very small physical dimensions due to the use of high-Q, temperature-compensated helical resonators 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.
- The filter is coated with black vinyl to prevent corrosion.
Specification
| Electrical | |
| Model | DPF VHF/33-DR 3000-… |
|---|---|
| Frequency | L : 138 – 156 MHz H : 152 – 175 MHz |
| Max. Input Power | 50 W |
| Special spec. info |
Single-channel tuned :Multi-channel tuned
BW = 1.5 MHz : |
| Insertion Loss Tx-Ant and Ant-Rx |
< 1.5 dB (typ. 1.3 dB)< 1.6 dB (typ. 1.4 dB)
|
| Tx Noise Suppression on Rx Frequency |
> 80 dB> 40 dB
|
| Isolation Rx on Frequency Tx |
> 80 dB> 40 dB
|
| Impedance | 50 Ω |
| VSWR | < 1.5:1 |
| Environmental | |
| Frequency Stability | 4.5 ppm/° C (approx.) |
|---|---|
| Operating temperature range | -30 °C to +60 °C |
| Mechanical | |
| Connection(s) | RG 400 Length = 510 mm / 20.08 in. Connectors: Low and high port: BNC-male Ant. port: N(f), bulkhead |
|---|---|
| Historic Brand | Procom |
| Dimensions | 170 x 77 x 61.7 mm / 6.69 x 3.03 x 2.43 in |
| Weight | Approx. 0.86 kg / 1.90 lb. |
| Mounting | Supplied with three stays (length 63 mm / 2.48 in) for mounting with screws M4 x 12 mm / 0.47 in. |
Ordering Codes
| Model | Product No. | Frequency | Additional Information |
|---|---|---|---|
|
DPF VHF/33-DR 3000-L-4/6 |
200002189 | 138 – 156 MHz | Spacing: 4 – 6 MHz |
|
DPF VHF/33-DR 3000-L-6/8 |
200002430 | 138 – 156 MHz | Spacing: 6 – 8 MHz |
|
DPF VHF/33-DR 3000-L-8/10 |
200002429 | 138 – 156 MHz | Spacing: 8 – 10 MHz |
|
DPF VHF/33-DR 3000-H-4/6 |
200002202 | 152 – 175 MHz | Spacing: 4 – 6 MHz |
|
DPF VHF/33-DR 3000-H-6/8 |
200002432 | 152 – 175 MHz | Spacing: 6 – 8 MHz |
|
DPF VHF/33-DR 3000-H-8/10 |
200002431 | 152 – 175 MHz | Spacing: 8 – 10 MHz |
Additional Information
Mounting in Motorola DR 3000
Mounting in Motorola DR 3000
Typical Response curves
Mounting Details
Please Note
Special configurations of this filter type may be quoted on request. The filter is supplied with flying leads (RG 400 coaxial cable) terminated with connectors.
The filter is delivered with 3 stays and screws for mounting.
PROCOM A/S reserves the right to
amend specifications without prior notice
PROCOM A/S • Smedetoften 12
DK 3600 Frederikssund • Denmark
Generated : 2026-06-26
Version 1