UKHAS badge board with RFM22, Arduino328 with 8Mhz external crystal (no brownout) running off a 1.8v MCP1700 regulator, 2.5V 10F supercap in parallel to badge board. Charged initially by 3.7v lipo and then this supply is removed.

• 50baud, 1 string every minute, under a lamp indoors
  • Just Cap = 5mins 36secs
  • Solar Cell = 18mins 49secs
• 300baud, 1 string every minute, under a lamp indoors
  • Just Cap = 12mins 21secs
  • Solar Cell = Continuous