Hi Geoff, saw your note note abt insulating guy wires. I have a similar
situation with 3 towers with sidemounted antennas and wondered abt the
interaction with the guy wires. I talked to Brian, K6STI, who writes the
MN and YO software about the problem and he generated a program that allows
you to easily add guy wires of various lengths to the antenna file for MN.
I would suggest you call Brian to determine the availablity of that program
for your use. If you are having trouble with not enough segments to model
the guy wires, you may want to talk to him about upgrading to the latest
version of MN, I think he's up to version 5.0 now. Brian can be reached at
619-945-9824.
I'm including the .ANT files for the HyGain 5 element monobanders.
These were output from the YO program and although they don't include the
boom mounting correction, should be fairly close. I have a much better 5
element 10 mtr design on the same boom that was published a few years ago
in the NCJ. If I can be of any help, let me know.
73 Rick N6ND craigr@marlin.nosc.mil
Hy-Gain Model 105BA, Cut for Low Phone
Free Space Symmetric
28.35 MHz
5 6061-T6 wires, inches
10 -135.5000 -102.0348 0.0000 -135.5000 102.0348 0.0000 0.7017
10 -43.5000 -95.8124 0.0000 -43.5000 95.8124 0.0000 0.6140
10 12.5000 -94.5937 0.0000 12.5000 94.5937 0.0000 0.6173
10 64.5000 -89.7223 0.0000 64.5000 89.7223 0.0000 0.6312
10 135.5000 -88.5048 0.0000 135.5000 88.5048 0.0000 0.6349
1 source
Wire 2, center
Hy-Gain Model 155BA, Cut for Phone
Free Space Symmetric
21.2 MHz
5 6061-T6 wires, inches
10 -150.3750 -143.7557 0.0000 -150.3750 143.7557 0.0000 0.7222
10 -60.8750 -130.2585 0.0000 -60.8750 130.2585 0.0000 0.7130
10 5.6250 -130.2585 0.0000 5.6250 130.2585 0.0000 0.7130
10 66.3750 -122.6935 0.0000 66.3750 122.6935 0.0000 0.7365
10 150.3750 -123.6357 0.0000 150.3750 123.6357 0.0000 0.7335
1 source
Wire 2, center
Hy-Gain 205BA phone settings
Free Space Symmetric
14.2 MHz
5 6061-T6 wires, inches
10 -204.1250 -204.2309 0.0000 -204.1250 204.2309 0.0000 0.9775
10 -81.2500 -193.4156 0.0000 -81.2500 193.4156 0.0000 0.9662
10 7.5000 -182.9982 0.0000 7.5000 182.9982 0.0000 0.9277
10 90.5000 -177.1863 0.0000 90.5000 177.1863 0.0000 0.9231
10 204.1250 -174.4262 0.0000 204.1250 174.4262 0.0000 0.9316
1 source
Wire 2, center
N6ND 5 El 10 Mtr Yagi on 105BA 24' Boom
Free Space
28.400 MHz
5 wires, inches
10 -143.3750 -103.2021 0 -143.3750 103.2021 0 0.6973
10 -85.2500 -97.6628 0 -85.2500 97.6628 0 0.6090
10 -40.5000 -97.1676 0 -40.5000 97.1676 0 0.6116
10 43.0000 -95.5684 0 43.0000 95.5684 0 0.6144
10 143.3750 -91.8821 0 143.3750 91.8821 0 0.6246
1 source
wire 2, center
0 loads
Note: This antenna has more gain and better pattern than stock HyGain. Also
has better clearance for sidemounting than stock.
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