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The 28767 is a 1/4 wave helical antenna with an RPSMA connector designed for use with radios operating at 855 to 880 MHz. The 28767 is used with a Campbell Scientific 868 MHz radio product that has an RPSMA antenna jack, such as theRF422. The 28767 has an omnidirectional radiation pattern and is fully weatherized for indoor and outdoor use.
| -NOTE- | Electrical specifications measured with 10.16 cm x 10.16 cm (4 in. x 4 in.) reference ground plane. |
| Connector | RPSMA (Reverse Polarity SMA) |
| Center Frequency | 868 MHz |
| Frequency Range | 855 to 880 MHz |
| Gain | None, -3.65 dBd, -1.5 dBi |
| Wavelength | 1/4 wave, helical |
| VSWR | < 1.9 typical at center |
| Impedance | 50欧姆 |
| Operating Temperature Range | -40° to +90°C |
| Maximum Diameter | 8.5 mm (0.33 in.) |
| Maximum Length | 51.0 mm (2.0 in.) |
| Weight | 4.54 g (0.01 lb) |
The 28767 covers the frequency bands used by Campbell Scientific 868 MHz radios, such as the RF422. Because it has an RPSMA plug connector, the 28767 can only be directly connected to a radio product or cable with an RPSMA jack.
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