# Specification

<table data-header-hidden><thead><tr><th width="263"></th><th width="242"></th><th></th></tr></thead><tbody><tr><td>Product</td><td>UM982 (dual-antenna)</td><td>UM982 Ultralight</td></tr><tr><td>Application</td><td><ul><li>Rover</li><li>Moving Baseline Rover</li><li>Base Station (Recommend using <a href="https://holybro.com/collections/standard-h-rtk-series/products/h-rtk-f9p-gnss-series">H-RTK F9P-Base</a> as base station)</li></ul></td><td>Rover</td></tr><tr><td>Compass</td><td>IST8310</td><td>IST8310</td></tr><tr><td>GNSS</td><td><p>BDS B1I/B2I/B3I</p><p>GPS L1C/A/L2P (Y)/L2C/L5</p><p>GLONASS L1/L2</p><p>Galileo E1/E5a/E5b</p><p>QZSS L1/L2/L5</p></td><td><p>BDS B1I/B2I/B3I</p><p>GPS L1C/A/L2P (Y)/L2C/L5</p><p>GLONASS L1/L2</p><p>Galileo E1/E5a/E5b</p><p>QZSS L1/L2/L5</p></td></tr><tr><td>Antennas Peak Gain (MAX)</td><td>2.5 dBi</td><td>2.8 dBi</td></tr><tr><td><p>LNA Gain</p><p>(typical)</p></td><td>33±2dB</td><td>22±2dB</td></tr><tr><td>Time-TO-First Fix</td><td><p>Cold start: ≤ 30s</p><p>Hot start: ≤ 5s</p></td><td><p>Cold start: ≤ 30s</p><p>Hot start: ≤ 5s</p></td></tr><tr><td>RTK-SurveyIn-Time</td><td>≤5 minute @2.0mCEP</td><td>≤5 minute @2.0mCEP</td></tr><tr><td>Data and Update Rate</td><td><p>20 Hz Positioning &#x26; Heading</p><p>20 Hz Raw Data observation</p></td><td><p>20 Hz Positioning &#x26; Heading</p><p>20 Hz Raw Data observation</p></td></tr><tr><td>Port</td><td><p>Port 1: GH1.25 10-pin</p><p>Port 2: USB Type-c Port 3: UART 2 (GH1.25 6pin)</p><p>Ultralight: GH1.25 8-pin</p></td><td>GH1.25 8-pin</td></tr><tr><td>Cable Length</td><td><p>GH 10P: 150mm</p><p>GH 10P: 400mm</p><p>GH 10P to 6P: 300mm</p></td><td>200mm</td></tr><tr><td>Antenna Connection Type</td><td><p>Board: SMA female</p><p>Antenna: SMA male</p><p>Ultralight: NA</p></td><td>NA</td></tr><tr><td>Baud rate:<br>(Adjustable)</td><td>230400 5Hz default</td><td>230400 5Hz default</td></tr><tr><td>Working voltage:</td><td>4.75V~5.25V</td><td>4.75V~5.25V</td></tr><tr><td>Current Consumption</td><td>~350mA </td><td>400mA max</td></tr><tr><td>Dimensions</td><td><p>Board: 34.8*58.9<em>*</em>14.4mm</p><p>Antenna Diameter: 27.5mm</p><p>Antenna height: 59mm</p></td><td>⌀43.6*37.1mm</td></tr><tr><td>Weight</td><td>37.9g (without antennas) </td><td>25.4g</td></tr></tbody></table>

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