Antenna needed

Tue Mar 22 11:57:49 EDT 2016

Upside down under the second story eave is where i have my ground plane antenna. By tweaking the transmitters to 315mhz (i use a toothpick as a pry on the coil) and adding a 9” whip antenna to them they behave well. My farthest are DS10’s at about 150 ft.

A cheap/easy receiver to calibrate the transmitters is a software defined radio attached via USB. GQRX, the open source software for mac provides a great graphic.

> On Mar 22, 2016, at 10·37 , Jeffrey Lomicka <JeffreyLomicka at comcast.net> wrote:
> 
> Maybe up-side-down in the attic would have worked better