Surface-mount circuit board NC2030.

Construction, Modification, and Repair References

Component Vendors

Expanded Spectrum Systems run by Rich Kennedy, N4ESS, sells crystals for the ham bands.

Electronic Goldmine has a low $10 minimum and good deals on diverse electronic surplus.

Galco Industrial Electronics has no minimum and better prices on some components than the bigger companies.

RF Parts Parts and Kits

And the obvious big vendors: Newark / element14 Digi-Key Mouser Electronics

Dan's Small Parts and Kits has a lot of parts. But unless you use one specific broken browser, his site doesn't work right.

Hardware References