Antenna LNA Power

NovAtel antennas and coaxial cables meet receiver RF input gain requirements. NovAtel coaxial cables are designed to introduce no more than 10 dB loss and NovAtel antennas are equipped with built-in LNAs that provide 29 dB of gain to the satellite signal received.

The power to the antenna LNA is provided through the receiver’s RF port center conductor.

The PwrPak7, CPT7 and OEM7 receivers, except the OEM7600, provide +5 VDC ±5% at a maximum of 200 mA. The OEM7600 provides +3.3 VDC ±5% at a maximum of 100 mA.

Antenna supply over current protection limits the LNA power.

If a short circuit or other problem causes an overload of the current supplied to the antenna, the receiver hardware shuts down the power supplied to the antenna. To restore power, power cycle the receiver. The Receiver Status word, available in the RXSTATUS log, provides more information about the cause of the problem.

For passive antennas, install a DC block between the receiver and antenna to prevent short circuiting the antenna power.