Speaking of "the next size up", Rich, in testing with the "Jonathan board" actually hand-wound an inductor with something like #22 wire around a pencil. I tried to do that and solder it on, but had no luck. Even that wire is huge compared to the pads :-)

73,

Burns Fisher, WB1FJ *AMSAT(R) Engineering -- Flight Software*

On Fri, Apr 28, 2023 at 9:26 AM Chris Thompson via pacsat-dev < pacsat-dev@amsat.org> wrote:

Jim,

I changed the inductor to 91nH and now it ranges from 137MHz to 151MHz. Seems good. I agree from your other email that the exact value will be dependent on the layout of the final board and stray inductance etc.

BTW, I didn't have the 91nH in the right size (only 82 and 100). So I had to squish in the next size up. But that seems to work.

73 Chris

-- Chris E. Thompson chrisethompson@gmail.com g0kla@arrl.net

---

pacsat-dev mailing list -- pacsat-dev@amsat.org View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/pacsat-dev@amsat.org To unsubscribe send an email to pacsat-dev-leave@amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org