![]() Receiver: Dipole 27 mm wire antenna - RSSI Tx: 51 - RSSI Rx: 74.Receiver: Dipole 29 mm wire antenna - RSSI Tx: 54 - RSSI Rx: 74.Receiver: Dipole 30 mm wire antenna - RSSI Tx: 62 - RSSI Rx: 78 - Without VTX Tx 59 Rx 70.Receiver: Dipole 32 mm wire antenna - RSSI Tx: 49 - RSSI Rx: 73.Receiver: Dipole 33 mm wire antenna - RSSI Tx: 41 - RSSI Rx: 74.Receiver: Generic Alfa 5dbi rubber duck antenna - RSSI Tx: 52 - RSSI Rx: 71 - Without VTX Tx 67 Rx 71.Receiver: FrSky 2dbi rubber duck antenna - RSSI Tx: 37 - RSSI Rx: 66 - Without VTX Tx 62 Rx 70.Transmitter: FrSky 2dbi rubber duck antenna. ![]() To get an idea of how well the different set of antennas would perform, I swapped the antennas one by one and recorded the Tx and Rx values from the configuration application.Īll the tests where performed with a FPV VTX 1180 MHz without low pass filter running 20 cm away from the receiver and everything was done indoors with antennas about 12 meters apart in separate rooms. High alarm: 40 dBc - final alarm - signal drops off under 38 dBc.Mid alarm: 49 dBc - precautionary alarm.Download the 3rd-party configuration program and the required drivers. The DHT provides a serial data port for configuration of the alarms for the RSSI and the two analog inputs. Plug the black header into the corresponding four pins on the transmitter. FrSky makes one with the necessary pin-header. To connect to the transmitter you need a USB-to-serial adapter.
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