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mockingbird asked Nunes answered

What is the maximum DC voltage (reverse power) allowed at the RF output of the STR4500?

I would like to connect the STR4500 to an amp that is meant to be used with an active antenna receiving GPS L1. The amp biases the input (which would be connected to the simulator output) at 5 VDC and I want to confirm that it won't damage the simulator. I don't have a DC block readily available.

str4500
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Nunes answered

Hi, I'm facing exactly the same problem.... As far as I could get from the STR4500 manual, it's an open circuit for DC, I'm assuming there is already a DC block on the output of the RF stage. I also confirmed it using a multimeter, infinite reading on the ohms scale, so, I connected my unit to the GPS receiver under test, up to now, no problem, but it's not what I recommend.


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