Author Topic: Active Diapason PCB antenna vice Coax Colinear 8 elements  (Read 924 times)

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F5ANN

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Active Diapason PCB antenna vice Coax Colinear 8 elements
« on: July 28, 2014, 03:32:18 PM »
Hi All,

I install an Active PCB diapason on my radio tower -12 meters above ground-
There is a 50m long coax cable to the radarcape receiver, with 13 dB losses.

I plot during 48 hours with SBS plotter the receive pattern and compare it with a previous pattern using the Coax Colinear  8 elements antenna with 10m Satellite TV coax cable 2dB losses

Both curve are almost identical. The blue curve is for the Active diapason, and the yellow one for the CoCo.
The Active diapason LNA compensate very well the 11 additional losses of the extra 40m coax cable.

Maximum achieve distance is 245 nm

Regards
Francois /F5ANN