User's Manual

Digital UHF Transmitter Chapter 5, Detailed Alignment Procedures
DT835A, Rev. 1 5-7
CHANNEL
FREQUENCY
(MHz)
N N7-N0 A A5-A0
40 673 84 01010100 8 001000
41 679 84 01010100 56 111000
42 685 85 01010101 40 101000
43 691 86 01010110 24 011000
44 697 87 01010111 8 001000
45 703 87 01010111 56 111000
46 709 88 01011000 40 101000
47 715 89 01011001 24 011000
48 721 90 01011010 8 001000
49 727 90 01011010 56 111000
50 733 91 01011011 40 101000
51 739 92 01011100 24 011000
52 745 93 01011101 8 001000
53 751 93 01011101 56 111000
54 757 94 01011110 40 101000
55 763 95 01011111 24 011000
56 769 96 01100000 8 001000
57 775 96 01100000 56 111000
58 781 97 01100001 40 101000
59 787 98 01100010 24 011000
60 793 99 01100011 8 001000
61 799 99 01100011 56 111000
62 805 100 01100100 40 101000
63 811 101 01100101 24 011000
64 817 102 01100110 8 001000
65 823 102 01100110 56 111000
66 829 103 01100111 40 101000
67 835 104 01101000 24 011000
68 841 105 01101001 8 001000
69 847 105 01101001 56 111000
5.3 (A1-A6) UHF Amplifier Trays
(1294-1112, low band/1294-1113,
mid band/ 1294-1114, high band;
Appendix C)
The UHF Amplifier Trays are located in
the 2-3kW Amplifier Arrays.
The UHF amplifier trays (1294-1112, low
band/1294-1113, mid band/ 1294-1114,
high band) have been adjusted at the
factory to meet all specifications,
including phase adjustment, to match the
multiple trays in an amplifier array when
they are combined. The trays should not
need to be adjusted to attain normal
operation. Any adjustments to the boards
in the trays should be performed in the
Manual Gain position, with S1 on (A8)
the amplifier control board (1265-1414)
in Manual. The idling current for the
amplifier boards are adjusted with no RF
drive applied. S1 should be in the Auto
AGC position for the normal operation of
the transmitter.
Connect a dummy load with a rating of a
least 300 watts to J2, the RF output jack
of the tray being aligned.