does anyone have a schematic for a 434 mhz (70cms) bandpass filter?
It only needs to be able to pass 100mw or so, so no huge power requirements needed!!
The only filter designs I can find seem hell bent on allowing 400watts thru.. I only need 100mw MAX.. Lugging a filter designed to pass huge wattages is an absolute no no for tracking a downed rocket!
Just make the coils with the same dimensions from thin copper wire.
Alternatively, the schematic should list their inductance values and you can easilly calculate how many turns of normal copper wire to use. Google for coil winding formulae.