Lower RF signal strength?
how can I lower the signal strength of an RF input (100-1000mhz -- television)? I'm currently using an attenuator which works well but can such a filter also be built with resistors and/or capacitors?
Your attenuator is probably just "resistors and capacitors". In fact, it's probably just resistors. You just need to match your impedance, probably 75 ohms.
Can you recommend any source where I can get further information how that can be done correctly?
Why do you want to reduce the signal strength of your received TV signal? Your TV is supposed to have an AGC circuit to do that.
A question is usually best answered when it has all the requirements. reasons, Input & output power levels, user controls , impedance ( 75 typ) , physical and other constraints.
A resistive attenuator actually dissipates the unwanted signal as heat! Now Cs and L can't do this so the best you could do is to build a filter that rejects the "unwanted" signal. It also has the problem that is, you want a constant loss over a wide band then the filter will get extremely complex and the unwanted signal that are rejected can cause ghosting (reflections), resistors are also cheaper then Cs and Ls.
Frank
Simply use a T-network for attenuation and impedance matching. 3 resistors. Look it up.