HC-1500AT
26
Circuitry
C1
C2
L
Tuning Range
Network circuitry of HC-1500AT is a T-shaped
matching network.
Although T-shape can match relatively wide
impedance range of the load, it creates an
extremely high RF voltage and current, if L and
C values are not appropriate.
HC-1500AT uses proper L and C values only,
for each band.
17. Network and Pre-set Positions
Remarks
C1/C2 ranges and matching positions for 50
Ω
Freq.
V. Cap 1
V. Cap 2
Min
Max
Tuning
Position / 50
Ω
Min
Max
Tuning
Position / 50
Ω
1.85MHz
0
99
46
0
99
43
3.8MHz
0
99
46
0
99
41
7.1MHz
28
99
57
28
99
56
10.1MHz
17
65
36
17
65
33
14.2MHz
10
40
23
10
40
20
18.1MHz
6
33
18
6
33
16
21.2MHz
4
29
16
4
29
13
24.9MHz
0
19
11
0
19
10
28.5MHz
0
24
11
0
24
9
50.5MHz
0
52
21
0
52
14
Above is a typical frequency of each band. Actually the band is divided minutely and respective
positioning data is stored in the memory.
* These positions are typical factory defaults.
