NGT—Technical description (2010)
94
NGT Transceiver System Technical Service Manual
Direct digital synthesis
Local oscillator for upper sideband and lower sideband
IC404 divides the reference oscillator frequency of 44.545 MHz down to the required
456.5 kHz for USB and 453.5 kHz for LSB. These frequencies may vary when different
optional filters are used.
The frequency information is programmed serially from the on-board microprocessor
IC405.
IC405 and IC407 divide the reference oscillator frequency of 14.848333 MHz down to
the required 456.5 kHz for USB and 453.5 kHz for LSB. These frequencies may vary
when different optional filters are used.
The frequency information is programmed serially from the on-board microprocessor
IC408.
Phase lock loop reference
IC403 divides the reference oscillator down to approximately 5 MHz. The signal is
buffered by V411 and is then fed as the reference frequency to IC401.
The reference frequency is varied in small step sizes to produce the 10 Hz steps at the
output of the phase lock loop.
The frequency information is programmed serially from the microprocessor IC405,
based on the channel information.
IC403 divides the reference oscillator down to approximately 5 MHz. The signal is
buffered by V411 and is then fed as the reference frequency to IC401.
The reference frequency is varied in small step sizes to produce the 10 Hz steps at the
output of the phase lock loop.
The frequency information is programmed serially from the microprocessor IC408,
based on the channel information.
ALTERNATIVE TEXT
ALTERNATIVE TEXT
NOTE
If the PCB issue status is -06 or earlier, see drawing
.
ALTERNATIVE TEXT
ALTERNATIVE TEXT
NOTE
If the PCB issue status is -06 or earlier, see drawing
.
Summary of Contents for NGT 2010 RF
Page 87: ...03 01032 Issue 2 ...
Page 88: ...03 01032 Issue 4 ...
Page 97: ...03 01126 ...
Page 98: ...03 01190 ...
Page 428: ...04 03223 ...
Page 429: ...04 03562 CODAN ...
Page 430: ...04 03437 ...
Page 431: ...04 03533 ...
Page 432: ...08 05513 ...
Page 433: ...08 05514 sheet 1 ...
Page 434: ...08 05514 sheet 2 ...
Page 435: ...08 05628 sheet 1 ...
Page 436: ...08 05628 sheet 2 ...
Page 437: ...08 05628 sheet 3 ...
Page 438: ...08 05628 sheet 4 ...
Page 439: ...04 03125 ...
Page 440: ...08 05300 ...
Page 441: ...08 05522 ...
Page 442: ...08 05523 ...
Page 443: ...08 05524 ...
Page 444: ...04 03201 ...
Page 445: ...08 05470 ...
Page 446: ...04 03423 ...
Page 447: ...08 05986 sheet 1 ...
Page 448: ...08 05986 sheet 2 ...
Page 449: ...04 03133 ...
Page 450: ...08 05317 ...
Page 451: ...04 03109 ...
Page 452: ...08 05266 ...
Page 453: ...04 03108 sheet 1 ...
Page 454: ...04 03108 sheet 2 ...
Page 455: ...08 05265 ...
Page 456: ...04 03106 sheet 1 ...
Page 457: ...04 03106 sheet 2 ...
Page 458: ...04 03106 sheet 3 ...
Page 459: ...08 05261 sheet 1 ...
Page 460: ...08 05261 sheet 2 ...
Page 461: ...04 03095 ...
Page 462: ...08 05235 ...
Page 463: ...04 03378 sheet 1 ...
Page 464: ...04 03378 sheet 2 ...
Page 465: ...04 03378 sheet 3 ...
Page 466: ...04 03378 sheet 1 ...
Page 467: ...04 03378 sheet 2 ...
Page 468: ...04 03378 sheet 3 ...
Page 469: ...08 05889 sheet 1 ...
Page 470: ...08 05889 sheet 2 ...
Page 471: ...08 05889 sheet 1 ...
Page 472: ...08 05889 sheet 2 ...
Page 473: ...04 03410 ...
Page 474: ...04 03414 ...
Page 475: ...08 05963 ...
Page 476: ...08 05962 ...
Page 477: ...08 05973 ...
Page 478: ...04 03169 ...
Page 479: ...08 05415 ...
Page 480: ...08 05416 ...
Page 481: ...08 05511 sheet 1 ...
Page 482: ...08 05511 sheet 2 ...
Page 483: ...04 03369 ...
Page 484: ...08 05869 sheet 1 ...
Page 485: ...08 05869 sheet 2 ...
Page 486: ...08 05869 sheet 3 ...
Page 487: ...08 05910 sheet 1 ...
Page 488: ...08 05910 sheet 2 ...
Page 489: ...04 03542 ...
Page 490: ...08 06461 sheet 1 ...
Page 491: ...08 06461 sheet 2 ...
Page 492: ...08 06461 sheet 3 ...
Page 493: ...08 05910 sheet 1 ...
Page 494: ...08 05910 sheet 2 ...
Page 495: ...04 03425 ...
Page 496: ...08 05988 sheet 1 ...
Page 497: ...08 05988 sheet 2 ...
Page 498: ...04 03424 sheet 1 ...
Page 499: ...04 03424 sheet 2 ...
Page 500: ...08 05987 ...
Page 501: ...04 03499 sheet 1 ...
Page 502: ...04 03499 sheet 2 ...
Page 503: ...08 06261 sheet 1 ...
Page 504: ...08 06261 sheet 2 ...
Page 505: ...04 03498 sheet 1 ...
Page 506: ...04 03498 sheet 2 ...
Page 507: ...08 06260 ...
Page 508: ...04 03379 ...
Page 509: ...08 05890 ...
Page 510: ...15 10506 001 ...
Page 511: ...15 10514 001 ...
Page 512: ...04 03110 ...
Page 513: ...08 05267 ...
Page 514: ...04 03514 ...
Page 515: ...08 06320 ...
Page 516: ...04 03272 ...
Page 533: ...03 01138 ...
Page 534: ...03 01139 ...
Page 604: ...04 03422 ...
Page 605: ...08 05985 ...
Page 606: ...04 03419 ...
Page 607: ...08 05997 ...
Page 608: ...04 03420 ...
Page 609: ...08 05999 ...
Page 610: ...04 03416 ...
Page 611: ...08 05977 sheet 1 ...
Page 612: ...04 03428 ...
Page 613: ...08 05998 ...
Page 614: ...04 03429 ...
Page 615: ...08 06000 ...
Page 616: ...04 03415 ...
Page 617: ...08 05976 sheet 1 ...
Page 618: ...08 05976 sheet 2 ...
Page 619: ...04 03418 sheet 1 ...
Page 620: ...04 03418 sheet 2 ...
Page 621: ...08 05979 sheet 1 ...
Page 622: ...08 05979 sheet 2 ...
Page 623: ...04 03417 ...
Page 624: ...08 05978 sheet 1 ...
Page 625: ...08 05978 sheet 2 ...
Page 626: ...08 05978 sheet 3 ...
Page 627: ...04 03421 ...
Page 628: ...08 05984 ...
Page 629: ...04 03453 ...
Page 630: ...08 06067 sheet 1 ...
Page 631: ...08 06067 sheet 2 ...
Page 632: ...08 06102 sheet 1 ...
Page 633: ...08 06102 sheet 2 ...
Page 634: ...04 03377 ...
Page 635: ...08 05926 sheet 1 ...
Page 636: ...08 05926 sheet 2 ...
Page 637: ...04 03407 ...
Page 638: ...08 05927 sheet 1 ...
Page 639: ...08 05927 sheet 2 ...
Page 654: ...03 01079 ...
Page 700: ...04 03363 sheet 1 ...
Page 701: ...04 03363 sheet 2 ...
Page 702: ...08 05854 sheet 1 ...
Page 703: ...08 05854 sheet 2 ...
Page 704: ...08 05854 sheet 3 ...
Page 705: ...04 03364 ...
Page 706: ...08 05855 ...
Page 707: ...04 03370 ...
Page 708: ...08 05870 ...
Page 721: ...03 01080 ...
Page 749: ...04 03366 sheet 1 ...
Page 750: ...04 03366 sheet 2 ...
Page 751: ...08 05860 sheet 1 ...
Page 752: ...08 05860 sheet 2 ...
Page 753: ...04 03367 ...
Page 754: ...08 05861 ...
Page 771: ...03 01108 ...
Page 826: ...08 05994 sheet 1 ...
Page 827: ...08 05994 sheet 2 ...
Page 828: ...04 02541 ...
Page 829: ...08 03905 ...
Page 830: ...04 02690 ...
Page 831: ...08 03993 ...
Page 832: ...04 02691 ...
Page 833: ...08 05995 ...
Page 834: ...04 02852 ...
Page 835: ...08 04644 ...
Page 836: ...04 02487 ...
Page 837: ...08 03817 ...
Page 838: ...08 03995 ...