Here are the results with the antenna approximately 15 feet above the roof.
SWR ——- Short Radials ——- Long Radials
2.0. ———-- 28,150 ——————-- 28,450
1.5 ——- —- 27,810 ——————- 27,880
1.0 ——-—- 27,255 ——————- 26,965
1.5 ———-- 26,540 ———- ——— 26,415
2.0 ———-- 25,820 ———- ——— 26,100
Bandwidth= 2,330 KHz ——— 2,350 KHz ( wider bandwidth of 20 KHz )
As you can see in my case, replacing the 8 short radials for 4 longer ones, It is like if you had to shorten the antenna a little bit. In my case it is beneficial because I can use a phone portion of 10 meter band as well.
Lowest SWR shifted from channel 22 to channel to channel 1.
What I don’t understand is this: How come the lowest SWR shifted to channel 1 and at the same time usable frequency went up to 28,450 ?
Also I noticed that bandwidth tend to wide a little, the higher the antenna. See previous post to compare.
RX and TX improved a little , about 1-2 db’s.
I have a Gain Master about 12 higher than the 827.
Before the change, I had to use the Gain Master for the guys of the north of the island in order to hear them better. Guys from the South could be heard better with the 827. I live between mountains, 1,660 feet above sea level.
After the change, signals from the north are the same with both antennas. Signals from the south are stronger.
What do these readings tell you ?
