Divimath, Inc. (HDZero) Race V3 VTX
Series: Divimath, Inc. (HDZero) Video links for drones (FPV and image transmission)
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The HDZero Race V3 VTX from Divimath (HDZero) is a low-latency digital FPV video transmitter for racing drones and light builds. It transmits on 5.8 GHz in the Raceband, selectable at 25 or 200 mW, weighs only 5.5 g and mounts on a 20 x 20 mm pattern. The footprint is 32 x 28 mm.
The picture is available in the modes 540p at 90 fps, 720p at 60 fps and 1080p at 30 fps; the 90 fps applies only in the lowest resolution mode. The latency of 14.1 ms is the general HDZero “as low as” figure from glass to glass, that is from camera to display, and applies to the system, not specifically to this model; the radio link alone needs under 1 ms according to the manufacturer. Eight channels in the Raceband are available. Supply voltage runs from 4 to 12 V.
In the EU, 25 mW EIRP is allowed in the 5.8 GHz band without a licence; the 200 mW step can be used there only with the appropriate permit. Anyone flying without a licence sets the 25 mW step. Equipment may be operated only in the approved frequency ranges and power levels. Ranges of digital systems at 25 mW are comparable only when antennas, altitude and surroundings are stated.
When choosing, weight and latency count more than resolution: the Race V3 is meant for pilots who want fast response and light drones, not 1080p film. The goggles must speak HDZero. At high power the unit warms up; the antenna and connectors suffer in crashes and should be checked afterwards.
Technical data
Other data
| Channels or bandwidth | 8 Kanaele (Raceband)correct |
|---|---|
| Frame rate (fps) | 90correct |
| Frequency | 5.8 GHzcorrect |
| Latency (ms) | 14.1correct |
| Protocol | HDZerocorrect |
| Resolution | 540p90 / 720p60 / 1080p30correct |
| Transmit power (mW) | 200correct |
| Weight (g) | 5.5correct |
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.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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