Fritzel balun SWR scan 1-60 MHz 20180325
Fritzel balun SWR scan 10 meter band 20180325
Fritzel balun SWR scan 20 meter band 20180325
Since I want to replace a balun that has been up there for ages I want to
be able to compare the two. So I used the antenna analyzer to get graphs
of the SWR over the whole possible range (1-60 MHz) and on the amateur
bands it was built for: the 10 meter band and the 20 meter band.
There was a very interesting difference with the earlier results on the
10 meter band when I first
tested the SARK100 antenna analyzer from Linux. The 10 meter band dipole probably moved a bit or
something else changed.
Fritzel balun SWR scan 1-60 MHz 20180404
Fritzel balun SWR scan 10 meter band 20180404
Fritzel balun SWR scan 20 meter band 20180404
So I diverted from my original plan of just documenting the current state and
checked and fastened all the wires and screws on the attic dipole. This helped!
The difference on the 20 meter band is minimal, the difference on the 10 meter
band is serious. So now the correct current state is documented, back to
building the new balun.
Other parts:
