Close

Transceiver Details

A project log for The Open Woodwind Project

An Electronic Aerophone with focus on usability as an instrument.

j-m-hopkinsJ. M. Hopkins 02/14/2015 at 22:530 Comments

Part of my new parts that came in was a new transceiver in the 70cm band. One of the difficulties of this band is that it is not ISR in the United States and requires the proper licensing to operate any devices. That being said I went ahead and obtained my FCC amateur license and am now able to use some of these transceivers that was previously off limits. Overall about a 150KHz bandwidth is being utilized. At full power (which is not being used) I can reach about 3 or 4 houses down without signal drop. Significant improvement over my previous 1 or 2 rooms away.

You can see from the spectrum above that it is running an FSK modulation, which gives it a rather robust transmission for data transfer.

Of course these transceivers will not be available to everyone, but I can put back in the 2.4GHz transceivers for those without the proper licensing.

Discussions