Spruce Creek Microwave
HF Digital Preselector for Software Defined Radios
Tuning range: 1 .5MHZ TO 30MHZ
Three Selectable 1.5-4MHZ, 4-10MHZ
Bands: 10-30MHZ.
3 DB Band-width: 5% nominal or
Customer Specified.
Insertion Loss: 4 DB Max.
Return loss: 10DB Max ref 50 Ohms.
IP3: +30 Min.
Control interface: RS 232
Tuning Steps: 10KHZ.
Tuning Speed: 250us Max.
Transient response: Less than 1microvolt.
Built in HP filter for transient suppression.
Power: +5 VDC @ 750MA.
Connectors RF: SMA Female.
Control connectors: Standard 9 pin D connector.
Three Selectable 1.5-4MHZ, 4-10MHZ
Bands: 10-30MHZ.
3 DB Band-width: 5% nominal or
Customer Specified.
Insertion Loss: 4 DB Max.
Return loss: 10DB Max ref 50 Ohms.
IP3: +30 Min.
Control interface: RS 232
Tuning Steps: 10KHZ.
Tuning Speed: 250us Max.
Transient response: Less than 1microvolt.
Built in HP filter for transient suppression.
Power: +5 VDC @ 750MA.
Connectors RF: SMA Female.
Control connectors: Standard 9 pin D connector.
The Digital Preselector Filter is a tunable preselector filter
used to enhance receiver performance by reducing large
interfering signals that cause distortion. The preleselector
can be used in a variety of applications including software
defined radios (SDR), conventional receivers, and remote
collection sites.
The Digital Preselector Filter contains a controller/power
supply and as many as four filter modules. Each module
supports 255 unique frequency settings. Each module is
calibrated to provide a tuning range with the least amount
of ripple across the band. When a new frequency is
requested, the controller selects the band and tuning
combination that tunes the filter to be centered as close as
possible to that frequency. A new frequency is requested
by sending an ASCII command via RS-232 or USB.
A complete description of the communications protocol can
be downloaded.
used to enhance receiver performance by reducing large
interfering signals that cause distortion. The preleselector
can be used in a variety of applications including software
defined radios (SDR), conventional receivers, and remote
collection sites.
The Digital Preselector Filter contains a controller/power
supply and as many as four filter modules. Each module
supports 255 unique frequency settings. Each module is
calibrated to provide a tuning range with the least amount
of ripple across the band. When a new frequency is
requested, the controller selects the band and tuning
combination that tunes the filter to be centered as close as
possible to that frequency. A new frequency is requested
by sending an ASCII command via RS-232 or USB.
A complete description of the communications protocol can
be downloaded.
Specifications: HDP-2-1.5-30
Third Order Response
10MHZ TO 30MHZ
1.5MHZ TO 4MHZ
4MHZ TO 10MHZ
Multiband Preselector
 | |  | |  | |  |
| | | | | | |
| To Contact us: |
| Phone: 443-880-7120 |
| 131 Aces Alley 32128 |
Features
- Built in Power Supply.
- RS-232 Interface.
- No Programing from external host.
- Modular design for additional Frequency bands HF to UHF
- Quasi-Elliptical two pole response.
- Continuous Sweep and Hop ability.
- Band-width from 2% to 10% available