CM LoRa/LoRaWAN tutorial 48
CM https://www.mobilefish.com/developer/lorawan/lorawan_quickguide_tutorial.html
CM https://www.mobilefish.com/download/lora/yagi_868mhz_4nec2_before_optimisation.nec.txt
CM Three element Yagi
CM To be used in 4NEC2 with support for SY cards
CM 
CM Reflector element length: lr
CM Driven element length: ldip
CM Director element length: ld
CM Spacing between reflector and driven element: dis
CM Spacing between director and driven element: dis2
CM wire diameter: d
CM height between ground and boom: h
CM Frequency freq = 868.0 MHz
CM feedpoint is located at the center of the driven element
CM Wire material is stainless steel, conductance = 1450000 mho/m
CE
SY lr=0.171
SY ldip=0.163
SY ld=0.152
SY dis=0.043
SY dis2=0.043
SY h=1.0
SY d=0.0018
SY freq=868.0
SY hlr=lr/2
SY hldip=ldip/2
SY hld=ld/2
SY r=d/2
'Reflector
GW	1	21	0	0	h+hlr	0	0	h-hlr	r
'Driven element
GW	2	17	dis	0	h+hldip	dis	0	h-hldip	r
'Director
GW	3	15	dis+dis2	0	h+hld	dis+dis2	0	h-hld	r
LD	5	1	0	0	1450000
LD	5	2	0	0	1450000
LD	5	3	0	0	1450000
GE	1
GN	1
EK
EX	0	2	9	0	1.	0	0
FR	0	0	0	0	freq	0
EN