Passive GPS Antenna uFL - 15mm x 15mm 1 dBi gain (ADA2461)

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This is a placeholder topic for “Passive GPS Antenna uFL - 15mm x 15mm 1 dBi gain” comments.

Wow that’s a tiny GPS antenna! This passive antenna is only 15mm x 15mm x 6.8mm in size, with a 50mm long uFL cable. Great for when you want to keep things small…

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Hi do you know if the ufl 15mm GPS antenna would work with the Lilygo ttgo? LILYGO® TTGO T-Beam V1.1 ESP32 433/868/915/923Mhz WiFi Bluetooth ESP32 GPS NEO-6M SMA 18650 Battery Holder With OLED - LoRa or GPS - Shenzhen Xin Yuan Electronic Technology Co., Ltd I purchased 10 of these and only one gps antenna works. If I move it to other units they pick up a signal. Lilygo support isn’t being very helpful, and I’m hoping this antenna might pick up satellites better since it has a larger surface area.

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Hi Josh
Probably not very well. The frequencies are very different. An antenna is a physical thing, the length will determine the frequency of resonance so the GPS antenna will be too short for effective reception at 900 plus MHz and definitely too short for 433MHz.
Cheers Bob

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Thanks Bob not sure I understand, I’m wanting to get the GPS antenna for the GPS on the device, not the LoRa

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Hi Josh
Sorry I did not notice the GPS seems to be separate to the lower frequency bits (LoRa).
You are right in that Lilygo don’t provide much detail on that GPS bit. You will have to try and decipher the numbers printed on that GPS and find out if it supports an active or passive antenna. I believe some GPS units need active (powered) antennas. The one you linked (from Core) is passive.

They also don’t show the other side of the board so you will need to check the connector type also. If you haven’t got one in your hand I am not sure how you are going to do that if Lilygo are not communicating.
Cheers Bob

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