TTGO LORA32 radiation pattern

Hi, I have this device: (but for 433Mhz)

With the PCB-mounted antenna, what is the radiation pattern? - or: on other words: whould the PCB's solder side point towards the other radio, or is it better to have the short edge point towards it ?

A vertical antenna like the one pictured should be omnidirectional in the horizontal plane.

For maximum received signal strength, the RX and TX antennas should be parallel.

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the vertical you see in the main picture is for Wifi/BT , LoRa is using a PCB mounted antenna on the solder side.

Unusual design.

Estimate a radiation profile experimentally by plotting RSSI values for fixed receiver orientation, versus a variety of TX orientations.

The rubber vertical antenna, connected to the SMA connector in the picture is for LoRa. The LoRa antenna is on the SMA socket to give you the option of using different antennas for different applications.

For optimum reception arrange two modules like this;

The antennas provided with the LoRa32 are a compromise between size and reception, with a bigger antenna you can get twice maybe three times the range\distance.

The metal antenna, mounted on the opposite side of the PCB to the display is for WiFi\Bluetooth.

Ah ! - thank you, I thought it was the other way around.
Regards
André

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