The initial test will be to go through all my Antennas from 160m to 70cm and get VSWR measurements in the pass band they are dedicated too. Initial setup is a 20' chunk of RG59 between the Nano and my rack where all the antennas terminate. Then I will move to the rack and test again just to see if there is much of a difference.
Band Antenna Type Initial Test 2nd test @rack with 1'Cable
160m Inv L/8 radials 1.884 / 1.1 1.1.807 / 1.1
80m Inv L/8 radials 3.819 / 1.1 3.5 / 1.1
40m 1/4 Vert/8 Radials 7.0 / 1.1 7.3 / 1.1
30m 1/4 Vert/8 Radials 10.5/ 1.1 10.15 / 1
20m 1/4 Vert/8 Radials 14.0 1.1 14.1 / 1.1
17m 1/4 Vert/8 Radials 18.0 / 1.2 18.3 /1.0
15m Fan Dipole 21.0 / 1.9 21.5 / 1.9
10m Fan Dipole 28.0 / 1.5 28.9 / 1.4
6m Fan Dipole 51.6 / 1.1 51.1 / 3.0
2m 5/8 Vert 146.7 / 1.1 146.2 / 1.0
2m Vert* 145.3 / 1.2 144.6 / 1.1
70 cm Vert* 430.0 1 / 1.0 431.1 / 1.0
* some sort of commercial dual band vertical at the top of the hill
To measure cable loss and length ideally you would have an open cable... all reflected back. Plan B, choose a freq with an SWR > 3 the higher the better! Best for measuring length as well as cable loss...not perfect but a good ballpark.
Band worse swr cable loss
160m Inv L/8 radials 1.136 / 4.3 2db
80m Inv L/8 radials 2.5 / 3.0 3db
40m Inv L/8 radials 3.5 / 3.1 2.8db
The 160m inv l works very good on 6m
The IFL is about 500' of LDF4. The worse SWR close to 50MHz was @ 66.963 MHz and was 2.6. I ran the test here and the loss measured was 3.5 db.
LDF4 is listed at 50.0 MHz 0.46 db / 100 ft and at 85 MHz its 0.60 db / 100ft. As you can see the Nano measurement is pretty close to theroretical.
