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Topic: SIM900 antenna troubleshooting (short to ground?) (Read 765 times) previous topic - next topic

Mike_001

Getech shield

What ohms should I be seeing at the external antenna jack?  I'm getting 0.1? between the center of the jack (or SIM900 pin60 RF_ANT) and ground.  Is that correct or a short?

I've got my shield running software fine but the signal is weak.  Even with the provided external antenna, my cheap-o cell phone on the same network gets better reception and can register to the network in places where my shield cannot.

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