There are two types of helical antennas:

• 868Mhz Helical Antenna (2dBi, 13mm, 50ohm)
• 915Mhz Helical Antenna (2dBi, 12.5mm, 50ohm)

They are great performance and a compact upgrade from the default free wire monopole included with all Moteinos with a radio module.

Can be used with any RFM69 or RFM95/96/LoRa based products including:

• Moteino
• MoteinoM0
• MoteinoUSB
• MoteinoMEGA
• MightyHat