Most anything that resonates with your cap, assuming you have a bunch of wire out the window for an antenna.
The coil becomes critical when there is no wire antenna, then the bigger the ferrite rod is the more signal you scoop up,
I assume via magnetic coupling, no longer thinking microvolts into a 50 ohm antenna connector.
Back about 55 years ago, I found toilet paper rolls to make fine inductor cores for AM radio projects of this sort
Jerry, KE7ER
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On Mon, Dec 16, 2019 at 01:39 PM, Michael Maiorana wrote:
Jerry,
That looks like a really fun and quick project. I've got plenty of air variable caps. Any idea what kind of coil to build if you don't have a ferrite rod for a core?
?
Adding this to my list of projects to play with!
Thanks
Mike M.? KU4QO
