OK2KBA antenna measurement  
Date 28.10.2000
Place near Býšovec
Antenna DL6WU 10 el. (OK2VMD product)
Conditions level measurement - antenna OK1KRC (Zach)
- level indicator AD8307 ( 100mV/1dB; 10V ~ +10dBm)
transmitter - R2CW
distance ~150m
Background ~3.3V ( DC voltage output from level indicator with AD8307 )
First measurement     Impedance measurement  
Angle
[º]
Vout
[V]
Conditions measure at the end of feed cable
0 7.54 Frequency PSV
30 5.74 140.0 MHz < 1.1
60 4.40 144.3 MHz < 1.6
150.0 MHz < 1.1
Measurement      
Max. level
[V]
Angle
[º]
Vout
[V]
[dB]
7.51 0 7.38 -1.3
10 6.99 -5.2
20 6.2 -13.1
30 5.78 -17.3
40 5.7 -18.1
50 4.53 -29.8
60 4.66 -28.5
70 4.55 -29.6
80 3.9 -36.1
90 4.38 -31.3
100 4.66 -28.5
110 4.46 -30.5
120 4.77 -27.4
130 5.12 -23.9
140 5.22 -22.9
150 4.83 -26.8
160 4.02 -34.9
170 4.6 -29.1
180 4.3 -32.1
190 3.95 -35.6
200 4.77 -27.4
210 5.37 -21.4
220 5.15 -23.6
230 4.32 -31.9
240 4.49 -30.2
250 4.06 -34.5
260 4.29 -32.2
270 4.62 -28.9
280 4.35 -31.6
290 5.5 -20.1
300 5.57 -19.4
310 5.83 -16.8
320 6.92 -5.9
330 7.35 -1.6
340 7.51 0
350 7.44 -0.7
360 7.28 -2.3
Modified 0 7.44 -0.7
(0º correction) 10 7.38 -1.3
20 6.99 -5.2
30 6.2 -13.1
40 5.78 -17.3
50 5.7 -18.1
60 4.53 -29.8
70 4.66 -28.5
80 4.55 -29.6
90 3.9 -36.1
100 4.38 -31.3
110 4.66 -28.5
120 4.46 -30.5
130 4.77 -27.4
140 5.12 -23.9
150 5.22 -22.9
160 4.83 -26.8
170 4.02 -34.9
180 4.6 -29.1
190 4.3 -32.1
200 3.95 -35.6
210 4.77 -27.4
220 5.37 -21.4
230 5.15 -23.6
240 4.32 -31.9
250 4.49 -30.2
260 4.06 -34.5
270 4.29 -32.2
280 4.62 -28.9
290 4.35 -31.6
300 5.5 -20.1
310 5.57 -19.4
320 5.83 -16.8
330 6.92 -5.9
340 7.35 -1.6
350 7.51 0