Microhard Systems pMDDL2450 (OEM)
Series: Microhard Systems Video links for drones (FPV and image transmission)
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The pMDDL2450 from Microhard Systems (Canada) is a miniaturised digital IP data-link module for 2.4 GHz with 2x2 MIMO and 1 W of transmit power. It carries video and data on unmanned systems and is intended as an OEM board for mid-size multicopters. It belongs to Microhard's Pico range and works as an IP-based MIMO digital data link.
The module operates in the range 2,402 to 2,478 MHz with a channel width of 4 or 8 MHz; at 8 MHz it reaches up to 25 Mbit/s as measured with iperf. Transmit power is 1,000 mW. The OEM board weighs about 7 g at 27 x 33 x 4 mm, closed versions weigh around 50 g or around 165 g. The OEM version needs 3.3 V for the digital part and 5 V for the RF part, the housed variants 7 to 30 V DC. At 2.4 GHz range depends on antennas, altitude and surroundings.
In the EU, only 100 mW EIRP is allowed in the 2.4 GHz band without a licence; the module's 1 W is far above that. The power can be used only where a national frequency assignment or permit covers it, and the setting has to be limited to what is permitted. Equipment may be operated in the EU only in the frequency ranges and power levels approved there.
When choosing, form and supply count: the OEM board needs a clean supply at two voltages and suitable heat dissipation, while the housed variants are heavier but ready to be powered. Antenna cables and connectors are the wear points, and the antennas must sit on the aircraft so that the two MIMO paths are not shadowed.
Technical data
Other data
| Channels or bandwidth | Kanalbreite 4/8 MHz; bis 25 Mbit/s (iperf, 8 MHz)correct |
|---|---|
| Frequency | 2.4 GHzcorrect |
| Protocol | Microhard Pico MIMO Digital Data Link (IP)correct |
| Transmit power (mW) | 1,000correct |
| Weight (g) | 7correct |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
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