Calculated coil value of the loop is 6.4 uH as explained in de 40 meter band loop.
Target frequency = 1.858 KHz
Calculated capacity value = 1.100 pF.
I have used in this case 11 meter RG58 with a capacitance of 100 pF / meter.
As you can see on this picture.
I had to change the small loop to insert the signal to a total lenght of 3 meter diameter becomes 1 meter for best SWR figures.
Marker 1 is SWR = 3 lower frequency,
Marker 2 is SWR =1,
Marker 3 is SWR = 3 higher frequency.
This means that we have an SWR =3 bandwith of 1.873 – 1.843 = 30 KHz.
