Paul Burridge wrote:

Hi all,

I need to wind 180nH inductor for a parallel tuned circuit I'm
building, since the 180nH factory-made chokes I have don't look up to
the job power-handling wise. This coil needs to handle about 90mA p-p/
500mW maximum dissipation sine current and I've allowed 3 ohms for
series resistance.
Can anyone give me some steer on dimensions, number of turns, core
type and so on? Thanks,

Here are the basic formulas for air core coils. 3 ohms sounds pretty
high for such a small inductance.

--
John Popelish