AM Status -
Version 1.0 - Arrived with no plated holes, guess OSH park can only handle 1 drill file, oops... drilled the holes myself, got useful prototype info and poof that it works
Version 1.2 - Much better, fixed some layout issues, need to increase pad spacing for the inductors and make life easier by getting a upward facing switch. When using 9V battery, there is a hum that is eliminated by touching ground (either crystal case or linear regulator heatsink). Need to troubleshoot.
FM Status -
Version 1.0 - Designed and layed out on a 9V size rectangle. Boards are in house and waiting for components to build.
AM Features -
- choice between 9V and 12V power source
- 5V USB port for powering phone/ipod (only works on 12V power)
- Indicator LED, intended to get brighter with tuning. Seems to be more of a status, considering removal or changing to purely a power indicator
- Antenna out, connect an antenna for limited range broadcast (3' is the scope of the project, enough to sit at your desk, not intended to broadcast from your attic to your basement)
- Line out, feeds antenna through capicitor so you can clip a line directly to your radios antenna, in my opinion the most useful part of this as it allows a simple audio conversion from ipod to AM radio
- Fits in an Altoids tin
FM Features -
- Antenna out, range not yet determined
- Line out, same as AM
- Footprint of a 9V battery