RTS BTR-80N, Руководство по эксплуатации

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BTR-80N, TR-80N, TR-82N 75
Frequency Bands
The BTR-80N system operates over the following frequency
ranges:
North America
–
Base TX: 482-608 MHz
–
Base RX: 572-608 MHz, US 3 Band: 653-663 MHz
Europe
–
Base TX: 482-608 MHz
–
Base RX: 572-608, 614-722 MHz
The bands, US TV channels, and frequencies are shown in
Figure 81. Most bands are 18 MHz wide.
Bands F to C are always base transmit bands (beltpack receive
bands). Bands 1-6 are always base receive bands (beltpack
transmit bands). Bands D and E can be both a base transmit or
receive band, depending on the unit ordered. Thus an A2 base
station is comprised of an A band transmitter and a two (2) band
receiver.
Band Pairing for Systems
All band pairs cannot be made into a system. Table 3 show the
available band pairings.
In Table 3, it can be seen that a C base station transmit band can
be paired with 3, 4, 5, or 6 receive bands. However, a C2 unit
cannot be made.This is because a certain amount of frequency
separation between transmit nad receive bands is required for
good transmit and receive operation. If they are too close the RF
performance of the system is reduced.
Base TX Bands Base RX Bands
F
D, E, 1, 2, 3, 4, 5, 6
H
E, 1, 2, 3, 4, 5, 6
A
1, 2, 3, 4, 5, 6
B
2, 3, 4, 5, 6
C
3, 4, 5, 6
D
4, 5, 6
E
5, 6
TABLE 3.
Available band pairings
FIGURE 81.
Band Names Frequencies and US TV Channels
Band US TV Freq.
Start
Freq.
End
US TV
F
16 482 488 16
17 488 494 17
18 494 500 18
H
19 500 506 19
20 506 512 20
21 512 518 21
A
22 518 524 22
23 524 530 23
24 560 536 24
B
25 536 542 25
26 542 548 26
27 548 554 27
C
28 554 560 28
29 560 566 29
30 566 572 30
D
31 572 578 31
32 578 584 32
33 584 590 33
E
34 590 596 34
35 596 602 35
36 602 608 36
37 608 614 37
1
EURO
ONLY
38 614 620 38
39 620 626 39
40 626 632 40
2
EURO
ONLY
41 632 638 41
42 638 644 42
43 644 650 43
3
EURO
ONLY & US
(10MHz)
44 650 656 44
45 656 662 45
46 662 668 46
4
EURO
ONLY
41 668 674 47
48 674 680 48
49 680 686 49
5
EURO
ONLY
50 686 692 50
51 692 698 51
52 698 704 52
6
EURO
ONLY
53 704 710 53
54 710 716 54
55 716 722 55