Calculator

input form

parameter	value and unit
frequency	MHz
turns	turns
VTX power	mW
RX antenna gain	dBi

output form

main parameters

parameter	abbreviation	value and unit
lambda	λ	m
antenna gain	G	dBi
max RX efficency	RX_eff	%
min HPBW	HPBW_min	°
min FNBW	FNBW_min	°
max HPBW	HPBW_max	°
max FNBW	FNBW_max	°
HPBW	HPBW	°
FNBW	FNBW	°
axial ratio	ax_ratio	-
effective apperture	app_eff	mm²
min frequency	F_min	MHz
max frequency	F_max	MHz

construction parameters

parameter	abbreviation	value and unit
winding spacing	s_wd	cm
winding diameter	D_wd	mm
reflector diameter	D_ref	mm
wire length	l	mm
wavetrap length	l_wt	mm
wavetrap width	s_wt	mm
wavetrap effective apperture	app_{eff_wt}	mm²
wavetrap startpoint	SP_wt	mm

extra parameters

parameter	abbreviation	value and unit
VTX gain	G_vtx	dBi
distance	dist	m

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