On 2/9/21 7:07 AM, Max via groups.io wrote:
I need an RF sampler of some sort for monitoring my RF signal. This might be used with a scope or TinySA or ...
Is something like this what I need? If so I'd prefer to build by own if I can get some info on the core type and number of turns and such. If this isn't what I need, what would this be used for exactly?
If you want to build your own.. A nice 20dB sampler is a voltage divider with a 450 ohm and 50 ohm resistor in series. That gives you a nice 10:1 voltage ratio, and the 500 ohms in parallel with a 50 ohm line is barely noticeable (45.5 ohms).
If you have higher powers, go for 4950 ohms and 50 ohms, for a 100:1 ratio (40dB).
