We all know summer months are designed to give you a break from the action
on 160 meters - so that you can improve your antennas for next season.
After some consideration - I have decided to try a phased array of two
verticals instead of continuing my testing with parasitic wires.
Some of the factors that influence my decision are:
1. Phased array has excellent F/B over a wide frequency range. This will
be a useful antenna in the second receiver (using a K3 in diversity mode).
2. A bidirectional pattern to the east coast and JA is very useful during
contests.
My current vertical is a gamma matched tower - and I am worried about how
that phasing works with that. However, I have decided to put up a second
tower that I estimate will have the same electrical height - and will
hopefully be well matched with an identical gamma match. This sould
minimize any variability and hopefully result in a well matched system.
I will be using a hybrid coupler to get my 90 degree phase shift - and
a simple transformmer to match the impedance when the two verticals are
in phase. The towers are spaced 1/4 wave apart and in line north/south.
If any of you have some practical experience with something similar, I
would love to hear your comments. I remember visiting K6SE back in the
1970's and his system worked very well with two gamma matched towers.
73 Tree N6TR/7
Boring, OR
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