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| Category | Parameter | Description / Unit | Buyer Target Requirement |
| Mission & System Profile | Orbit Designation | LEO, MEO, GEO, Deep Space | Deep Space |
| Mission Lifetime | Years (Operational) | Minimum nominal lifetime: 5 years, with a goal of an additional 3 years if feasible. | |
| Min. Technology Readiness Level | TRL 1-9 | >= TRL 7 preferred | |
| Flight Heritage Required? | Yes / No / Preferred | Preferred | |
| Technical - Electrical | Input Bus Voltage Range | VDC (Min - Max) | 28 VDC nominal, unregulated; operating and survival ranges TBD |
| Total Power Handling | Watts (W) | >= 1,5 KW continuous output capability, excluding conversion losses and design margin | |
| Latching Current Limiters (LCLs) | Quantity & Current Rating (e.g., 10x 1A) | 14 individually commandable and protected non-heater channels: 28 V channels: - 2 x 0.071 A nominal (2 W per channel) - 1 x 2.50 A nominal (70 W) - 1 x 1.79 A nominal (50 W) - 4 x 3.57 A nominal (100 W per channel) - 2 x 0.43 A nominal (12 W per channel) - 1 x 0.71 A nominal (20 W) 12 V channel: - 1 x 8.33 A nominal (100 W) 5 V channels: - 1 x 2.00 A nominal (10 W) - 1 x 1.50 A nominal (7.5 W) Each channel shall be independently ON/OFF commandable and shall have an individually configurable protection threshold. Overcurrent and short-circuit protection, fault containment, channel status telemetry and trip indication are required for each channel. Configurable latch-off and/or automatic retry are preferred. Final LCL current ratings, trip thresholds, inrush capability, trip delay, I²t characteristics and derating are TBD. | |
| Heater Switch Channels | Quantity & Current Rating | 30 individually commandable and protected heater channels at 28 V, organized in two separate groups: Operational heaters: - 15 x 1.07 A nominal, 30 W per channel - 450 W aggregate - 16.07 A aggregate nominal current Survival heaters: - 15 x 0.71 A nominal, 20 W per channel - 300 W aggregate - 10.71 A aggregate nominal current Operational and survival heater channels may be aggregated into two separate functional groups at unit level. However, each heater channel shall remain independently ON/OFF commandable and shall have an individually configurable protection threshold. Overcurrent and short-circuit protection, fault containment, channel status telemetry and trip indication are required for each heater channel. Thermostatic control logic, autonomous heater control, trip thresholds, inrush capability and final switch current ratings are TBD. | |
| Pyrotechnic / Deployment Lines | Quantity & Specs (e.g., initiator firing) | Not required | |
| TM/TC Data Interface | CAN, RS422, MIL-1553, SpaceWire, etc. | CAN preferred; CAN-FD, RS-422 or RS-485 acceptable. Redundant interface preferred. Individual channel TC/TM required. | |
| Efficiency / Max Dissipation | % / Watts (at full load) | TBD; high efficiency and minimized full-load dissipation required. Supplier to state. | |
| Grounding / Isolation | Isolation required between primary & secondary? | Three mutually galvanically isolated output domains are required: - Utility-load power domain - Heater power domain - General payload power domain Galvanic isolation shall be provided between each output domain and the other two output domains. Operational-heater and survival-heater outputs shall remain functionally segregated within the heater power domain. Each output channel shall retain independent switching, protection and monitoring. The supplier shall propose and document the grounding, return-path, isolation-boundary and fault-containment implementation. | |
| Technical - Mechanical | Maximum Mass Envelope | Kilograms (kg) | TBD; mass shall be minimized. Supplier to state configured-unit mass. |
| Dimensions (L x W x H) | Millimeters (mm) | TBD; volume shall be minimized. Supplier to state configured-unit dimensions. | |
| Operating Baseplate Temp. | Celsius (°C, Min to Max) | -40° C to 80°C (TBC) | |
| Vibration / Shock Standard | e.g., GEVS, ECSS, specific profile | Shock maximum 500g (TBC); Vibration TBD | |
| Radiation - TID Tolerance | krad (Si) | The unit shall be capable of being exposed to a total ionizing dose (TID) of radiation of 5 kRad | |
| Radiation - SEE Latch-up Immunity | LET Threshold (MeV-cm²/mg) | The unit shall be fault-tolerant to non-destructive and destructive single event effects (SEE).. Supplier to provide SEE test data and LET thresholds. | |
| Supply Chain & Commercial | Target Lead Time | Months ARO (After Receipt of Order) | TBD; shortest available lead time preferred. Supplier to state EM/EQM/FM lead times. |
| Quality Standard Compliance | e.g., ECSS Class 3, NASA EEE-INST-002 | Space-qualified or flight-proven New Space product; ECSS-compatible design and manufacturing preferred. Exact compliance level TBD. | |
| Export Control Status | ITAR, EAR, ITAR-Free | ITAR-Free preferred; supplier to state applicable export classification. | |
| Country of Origin Restrictions | Excluded countries / preferred regions | TBD | |
| Warranty Period | Months post-delivery | TBD | |
| Minimum Order Quantity (MOQ) | Number of Flight Models (FM) + EM/EQM | 1 Flight Model; 1 EM |
We're looking for an SDR for a space-based RF monitoring function on an IOD mission next year (and subsequent missions after). We're seeking an S-band SDR that we have the ability to replace most or all the software/programmable logic on (retaining only drivers, bootloaders, and possibly any OS). We would like a BSP/reference design and engineering hours to support development with your solution. Our hardware requirements are highly relaxed for this test mission, although we would value included S-band frontend functions.
Cost Lead Time Radiation documentation — total dose (TID) tolerance/test data, and any relevant radiation qualification reports Part-to-part variation data — e.g., an example EIDP (End Item Data Package) or similar showing sensor-to-sensor consistency/repeatability across a production lot Any additional details you typically include on spec sheets, such as: Output current range/resolution Operating temperature range Flight heritage
| Section | Parameter | Minimum Buyer Requirement / Value | Notes / Document Reference |
| Project / Mission Requirements | Required Delivery Date (Flight) | TBD (to be fixed with program schedule) | Drives long-lead item procurement; buyer to confirm |
| Quantity Required | TBD — baseline: 1x Engineering Model (EM) + 1x Flight Model (FM) | EM for AIT / verification FM for flight | |
| Target Cost Per Unit | TBD (budget approval pending) | Excluding NRE; NRE to be quoted separately | |
| Mission Lifetime | ≥ 5 years on-orbit operational life | LEO radiation and lifetime derating per TID budget below | |
| Target Orbit / Altitude | LEO, 600 km circular (demonstration reference); 500-600 km SSO compatible | First demonstration orbit; LEO constellation ISL is the secondary application | |
| 2. Technical - Optical | Laser Wavelength | Tx 1540.56 ±0.1 nm, Rx 1563.05 ±0.1 nm (ITU C-band); uplink beacon 808 nm | OCT Comprehensive Design Doc, Sec. 9.1 (wavelength matching to OGS) |
| Interoperability Standard | CCSDS 141.0-B / 142.0-B (O3K) compliant; SDA OCT Std 3.1.0 as ISL growth path | Ground segment: ≥ 500 mm OGS aperture; 808 nm beacon to be confirmed with OGS supplier | |
| 2. Technical - Performance | Data Rate (Tx / Rx) | 10 Gbps Tx (NRZ-OOK, IM/DD) / ≥ 1 Mbps Rx (uplink TT&C) | OCT Comprehensive Design Doc, Sec. 10 (derived OCT specification) |
| Link Distance (Range) | 600 km at zenith (demo reference); ≥ 1500 km slant range at 10° elevation (target) | Link margin ~ +21 dB @600 km; ~ +10.6 dB @1500 km (link budget) | |
| 2. Technical - SWaP-C | Mass (Weight) | ≤ 32 kg total terminal | Mass budget: gimbal assy 6.37 kg (pitch-rotating 2.52 kg), fixed optical bench 5.25 kg, balance = electronics + harness |
| Power Consumption (Peak) | ≤ 180 W peak (transmit mode); ≤ 40 W standby | Tx chain ~20-35 W of which booster EDFA ~12-18 W (2x 4 W pumps) | |
| Volume / Envelope Dimensions | TBD — driven by ≥ 80 mm aperture and Az/El gimbal envelope | Envelope to be closed at PDR; coude path ≤ 185 mm, bearing bore ≥ 32 mm (MEK-055/056) | |
| 2. Technical - Interfaces | Data Interface | High-speed: 10GbE (SFP+) or SpaceFibre; TM/TC: CAN 2.0B or RS-422 | 10 Gbps line rate; final selection to be fixed in the Electrical ICD |
| Electrical / Power Input | 28 V DC regulated (22-34 V), single-point ground | Platform bus voltage — to be confirmed with the satellite prime | |
| Mechanical Mounting | TBD — 3-point kinematic mount on nadir-facing panel | Alignment tolerance w.r.t. star tracker / spacecraft body frame to be defined | |
| 2. Technical - Pointing | Field of Regard (FoR) | Azimuth: ±180° continuous; pitch (nadir angle): 0–66°; rates ≥ 10 °/s (Az), ≥ 0.75 °/s (pitch) | Beacon Acquisition & PAT Doc; keyhole avoidance rule δ > 5° (max 85° elevation pass) |
| 3. Environmental | Technology Readiness Level (TRL) | TRL ≥ 6 at PDR; TRL ≥ 8 (flight proven) preferred | Minimum TRL 6 (Flight proven preferred) |
| Operational Temperature | −20 °C to +55 °C (baseplate) | −20 °C to +55 °C | |
| Survival Temperature | −40 °C to +75 °C | −40 °C to +75 °C | |
| Random Vibration (Launch) | ≥ 14.1 grms, 20-2000 Hz, 2 min/axis, 3 axes | NASA GSFC GEVS (GSFC-STD-7000B) qualification level, or launch-vehicle specific spectrum | |
| Radiation Tolerance (TID) | ≥ 30 krad(Si) TID (RDM 2); SEL immune to ≥ 60 MeV·cm²/mg | 600 km / 5 yr mission; Er/Yb gain fiber rad-hard (< 1.5 dB/100 krad) | |
| Component Screening Level | ECSS-Q-ST-60C Class 2 or NASA Level 2 equivalent | EEE parts list (PAD) approval required; outgassing per ASTM E595 (TML < 1%, CVCM < 0.1%) | |
| 4. Deliverables | 3D CAD Model (STEP format) | Yes — mandatory | Required at Preliminary Design Review (PDR) |
| Electrical Interface Control Document (ICD) | Yes — mandatory | Required at Critical Design Review (CDR) | |
| Software/Firmware ICD | Yes — mandatory | Required at Critical Design Review (CDR) | |
| Thermal / Structural FEA Models | Yes — mandatory | Required at Critical Design Review (CDR) | |
| End-of-Line Test Reports | Yes — mandatory | Required prior to shipment | |
| Certificate of Conformance (CoC) | Yes — mandatory | Required at delivery |
Category Parameter Description / Unit Buyer Target Requirement Mission & System Profile Orbit Designation LEO, MEO, GEO, Deep Space LEO Mission Lifetime Years (Operational) 5 Min. Technology Readiness Level TRL 1-9 Flight Heritage Required? Yes / No / Preferred Preferred Technical - Electrical Input Bus Voltage Range VDC (Min - Max) 22 - 34 Total Power Handling Watts (W) 250 Latching Current Limiters (LCLs) Quantity & Current Rating (e.g., 10x 1A) 20 x 5A Heater Switch Channels Quantity & Current Rating 12 Pyrotechnic / Deployment Lines Quantity & Specs (e.g., initiator firing) 16 TM/TC Data Interface CAN, RS422, MIL-1553, SpaceWire, etc. RS422 Efficiency / Max Dissipation % / Watts (at full load) 90 Grounding / Isolation Isolation required between primary & secondary? Yes Technical - Mechanical Maximum Mass Envelope Kilograms (kg) 5 Dimensions (L x W x H) Millimeters (mm) 250 x 180 x 130 Operating Baseplate Temp. Celsius (°C, Min to Max) -35 to 65 Vibration / Shock Standard e.g., GEVS, ECSS, specific profile GEVS Radiation - TID Tolerance krad (Si) 20 Radiation - SEE Latch-up Immunity LET Threshold (MeV-cm²/mg) 32 Supply Chain & Commercial Target Lead Time Months ARO (After Receipt of Order) 6 Target Unit Price USD / EUR N/A NRE Budget (Non-Recurring Eng.) USD / EUR (if customization needed) ITAR Quality Standard Compliance e.g., ECSS Class 3, NASA EEE-INST-002 Export Control Status ITAR, EAR, ITAR-Free ITAR Country of Origin Restrictions Excluded countries / preferred regions USA preferred Warranty Period Months post-delivery 12 Minimum Order Quantity (MOQ) Number of Flight Models (FM) + EM/EQM 2 FM + 1 EM
We are looking for RF based ISL antennas/systems in S and K/Ka band. Would be great if its TRL-7 atleast.
The possible frequency range in which we can have S band ISL are: 2025 to 2110 MHz and 2200 to 2290 MHz.
The possible frequency range in which we can have Ka band ISL is: 32.3 to 33 GHz.
The possible frequency range in which we can have K band ISL are: 22.55 to 23.55 GHz and 24.45 to 24.75 Ghz.
| Category | Parameter Name | Target Value | Unit |
| Programmatic | 1. Quantity & Schedule | 1EM, 1FM | Qty / Date |
| Electrical | 2. Nominal Voltage | 14V-16V or 28V | V |
| 3. Total Energy Capacity | TBD | Wh | |
| 4. Max Continuous Current | 5A | A | |
| 5. Peak Current & Duration | TBD | A / ms | |
| Mechanical | 6. Maximum Mass | 5kg | kg |
| 7. Max Envelope (X x Y x Z) | preferable Footprint 100x100 | mm | |
| Environmental | 8. Operational Temp Range | -15 to 35°C | °C |
| 9. Launch Vibration (Random) | TBD | g rms | |
| Mission Life | 10. Orbit Type & Design Life | LEO, >3Years | Orbit / Yrs |
| 11. Max Depth of Discharge | TBD | % | |
| Quality | 12. Mission Class / Standard | Research, COTS |
| Technical Parameters - Chamber & Vacuum | |
| Usable Internal Volume (W x D x H) | 500 x 1250 x 500 mm |
| Chamber Geometry | Cylindrical |
| Door Configuration | Does not matter |
| Ultimate Vacuum Level | 1x10^-6 mbar |
| Pump Down Time to Ultimate Vacuum | TBC by supplier |
| Primary Pumping System | TBC by supplier |
| Bake-out Capability Required? | Yes |
| Technical Parameters - Thermal & Shroud | |
| Thermal Shroud Type | TBC by supplier |
| Minimum Temperature | -40 ºC |
| Maximum Temperature | +85 ºC |
| Temperature Ramp Rate | 1.5 - 2.0 ºC/min |
| Cooling Method | TBC by supplier |
| Heating Method | TBC by supplier |
| Thermal Uniformity across Platen | ± 3.0 |
| Technical Parameters - Instruments & Feedthroughs | |
| Number of Thermocouple Feedthroughs | 2 |
| Power / Signal Feedthroughs | TBC by supplier |
| RF / Waveguide Feedthroughs | 2 |
| Optical Windows (Qty & Size) | YES (size TBC by supplier) |
| Residual Gas Analyzer (RGA) Port? | TBC by supplier |
| TQCM (Contamination Monitor) Port? | TBC by supplier |
| Software Interface | TBC by supplier |
| Cleanroom Compatibility | YES (ISO Class 8) |
| Supply Chain & Commercial Parameters | |
| Required Delivery Date (On-Site) | Q3 2027 |
| Maximum Acceptable Lead Time | 24 weeks |
| Incoterms (2020) | DAP (Delivered at Place) |
| Delivery Location (Facility Address) | Eguës (Spain) |
| Standard Payment Terms | TBC |
| Warranty Period | 3 years |
| Maintenance Contract | Optional Quote Required (TBC by supplier) |
| On-site Installation & Commissioning Included? | Yes |
| Operator Training Included? | Yes |
1. Gas mass flow rate (GHe) = 11 g/s
Internal Leak rate <= 1e-03 scc/s
External leak rate <= 1e-06 scc/s
Operating Inlet pressure range - 300 to 40 bar
Outlet pressure = 25 bar
All welded configuration.
2. Gas mass flow rate (GHe) = 16.5 g/s
Internal Leak rate <= 1e-03 scc/s
External leak rate <= 1e-06 scc/s
Operating Inlet pressure range - 345 to 40 bar
Outlet pressure = 25 bar
All welded configuration.
Please explore and lets us know about availability of such type of regulators. In case of non availability also let us know if any supplier can make and supply as custom based requirement.
Minimum Technical Requirements:
Feed assembly suitable for operation on a 3.8 metre Cassegrain/parabolic SATCOM antenna.
Receive Frequency Range: 3.4 GHz to 4.2 GHz.
Transmit Frequency Range: 5.850 GHz to 6.425 GHz.
Polarisation: Circular, supporting both:
- Left Hand Circular Polarisation (LHCP)
- Right Hand Circular Polarisation (RHCP)
- Orthogonal/reversible operation.
Transmit Axial Ratio: ≤ 0.75 dB.
Cross-Polarisation Performance: Compliant with Intelsat IESS-207 requirements.
Regulatory Compliance: FCC and Intelsat compliant.
Minimum Antenna G/T: 22.5 dB/K at 25° elevation angle with receive out-of-band filtering.
Equivalent Isotropically Radiated Power (EIRP): Support antenna system performance of 63 dBW (single carrier, mid-band).
Feed assembly shall be supplied complete with all required:
Waveguide interfaces
Orthomode transducer (OMT) or equivalent
Mounting hardware
Polarisation switching components
Environmental sealing suitable for outdoor deployment
Vendor Response Requirements
Tenderers shall provide:
1. Detailed feedhorn datasheet.
2. Mechanical drawings including dimensions and mounting interfaces.
3. Waveguide flange standards and interface details.
4. Gain and illumination pattern plots.
5. Cross-polarisation performance data.
6. Environmental specifications.
7. Mean Time Between Failure (MTBF), if available.
8. Country of manufacture and delivery lead time.
9. Confirmation of compatibility with existing 3.8 m tactical SATCOM antenna systems.






















































































