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Midland BASE CAMP446 Service Manual
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Midland BASE CAMP446 Service Manual

Midland BASE CAMP446 Service Manual

Multi-task pmr446 transceiver
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BASE CAMP446
Ricetrasmettitore PMR446 multiuso
Multi-task PMR446 transceiver
-Service Manual-
Cod.603903
Via R. Sevardi 7
42124Reggio Emilia – Italy
www.cte.it

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Summary of Contents for Midland BASE CAMP446

  • Page 1 BASE CAMP446 Ricetrasmettitore PMR446 multiuso Multi-task PMR446 transceiver -Service Manual- Cod.603903 Via R. Sevardi 7 42124Reggio Emilia – Italy www.cte.it...

  • Page 2: Technical Description

    Base Camp 446 TECHNICAL DESCRIPTION A). GENERAL DESCRIPTION The BASE CAMP 446 is a self-contained transceiver unit with integral antenna intended for use as a general communication tool. It is designed to operate on all 75 channels allocated by the CE for the licensed PMR& LPD. This model also features a CTCSS system with 38 pre-defined, user selectable sub-audible tones for channel quieting.
  • Page 3 Base Camp 446 TECHNICAL DESCRIPTION limit maximum deviation to +/- 2.5KHz and a three-pole low pass or splatter filter at 2.8KHz (IC103 A,D). The low pass filter insures that the occupied bandwidth of the FM modulated signal meets FCC requirements under all input conditions.
  • Page 4 Base Camp 446 TECHNICAL DESCRIPTION for channel selection, channel monitor, receive volume, and page. Pressing the PTT switch instructs CPU1,2 to switch to the transmit mode. This is accomplished by loading the proper channel counter information through a 3- wire serial link to the PLL IC (IC102), turning on power to the PLL and VCO, microphone and transmit audio circuits and the transmit RF amplifiers.
  • Page 16 Ref.No Items Description Q'ty Main PCB_X1 version BS446_X1 Sub PCB 1 for Function botton Sub PCB 3 for Light LEDs Sub PCB 2 for Power/Volume/Tone control switch Q203 BFQ67W Transistor Chip Q204 BFQ67W Transistor Chip Q205 BFQ67W Transistor Chip C201 0.5P Chip cap 0402 NP0 1.5P...
  • Page 17 C157 100P Chip cap 0402 NP0 C161 100P Chip cap 0402 NP0 C162 100P Chip cap 0402 NP0 C164 100P Chip cap 0402 NP0 C166 100P Chip cap 0402 NP0 100P Chip cap 0402 NP0 C182 100P Chip cap 0402 NP0 C213 100P Chip cap 0402 NP0...
  • Page 18 C407 100P Chip cap 0402 NP0 C408 100P Chip cap 0402 NP0 100P Chip cap 0402 NP0 100P Chip cap 0402 NP0 C422 100P Chip cap 0402 NP0 100P Chip cap 0402 NP0 100P Chip cap 0402 NP0 C442 100P Chip cap 0402 NP0 C448 100P...
  • Page 19 C214 Chip cap 0402 NP0 C624 180P Chip cap 0402 NP0 Chip cap 0402 NP0 Chip cap 0402 NP0 C220 Chip cap 0402 NP0 C414 Chip cap 0402 NP0 C152 220P Chip cap 0402 NP0 C629 220P Chip cap 0402 NP0 C125 Chip cap 0402 NP0 C133...
  • Page 20 C219 Chip cap 0402 NP0 C224 Chip cap 0402 NP0 C410 Chip cap 0402 NP0 C718 Chip cap 0402 NP0 C160 Chip cap 0402 NP0 C415 Chip cap 0402 NP0 C432 Chip cap 0402 NP0 Chip cap 0402 NP0 C604 Chip cap 0402 NP0 C246 Chip cap 0402 NP0...
  • Page 21 Chip cap 0402 X7R +/-10% C229 0,0018 C427 0,0022 Chip cap 0402 X7R +/-10% C439 0,0022 Chip cap 0402 X7R +/-10% C440 0,0022 Chip cap 0402 X7R +/-10% C445 0,0022 Chip cap 0402 X7R +/-10% C446 0,0022 Chip cap 0402 X7R +/-10% C434 0,0033 Chip cap 0402 X7R +/-10%...
  • Page 22 Chip cap 0402 X7R +/-10% 0.039(X7R) C233 0.047(X7R) Chip cap 0402 X7R +/-10% C236 0.047(X7R) Chip cap 0402 X7R +/-10% C431 0.047(X7R) Chip cap 0402 X7R +/-10% C433 0.047(X7R) Chip cap 0402 X7R +/-10% C443 0.047(X7R) Chip cap 0402 X7R +/-10% C616 0.1 (X7R) Chip cap 0402 X7R +/-10%...
  • Page 23 C469 0.1Y5V Chip cap 0402 Y5V 0.1Y5V Chip cap 0402 Y5V C606 0.1Y5V Chip cap 0402 Y5V C607 0.1Y5V Chip cap 0402 Y5V C608 0.1Y5V Chip cap 0402 Y5V C701 0.1Y5V Chip cap 0402 Y5V C702 0.1Y5V Chip cap 0402 Y5V C703 0.1Y5V Chip cap 0402 Y5V...
  • Page 24 C211 Chip cap 0603 Y5V Chip cap 0603 Y5V Chip cap 0603 Y5V C473 Chip cap 0603 Y5V C477 Chip cap 0603 Y5V Chip cap 0603 Y5V Chip cap 0603 Y5V Chip cap 0603 Y5V C614 Chip cap 0603 Y5V C620 Chip cap 0603 Y5V C621...
  • Page 25 L207 0.3X0.9X3T(R) Inductor Air L141 0.3X1.2X4T(R) Inductor Air L203 0.3X1.4X6T(R) Inductor Air L204 0.3X1.4X6T(R) Inductor Air L205 0.4X1.0X2T(R) Inductor Air 0.4X1.5X5T(R) Inductor Air L201 0.4X1.5X5T(R) Inductor Air L202 0.4X1.5X5T(R) Inductor Air L206 0.4X2.0X6T(L) Inductor Air 10Vdc 5W Zener Diode ZD101 Axial Zener Diode 10V 5W CPU1 TMP86CH21AUG-xxxx...
  • Page 26 D205 KDS115 (USM) Diode Chip D401 KDS115 (USM) Diode Chip KDS120 Diode Chip KDS120 Diode Chip KDS120 Diode Chip KDS120 Diode Chip KDS120 Diode Chip KDS120 Diode Chip KDS120 Diode Chip KDS120 Diode Chip D601 KDV147(B) Diode Chip D603 KDV147(B) Diode Chip D101 KDV1472(B)
  • Page 27 Q141 KRC405E Transistor Chip Q202 KRC405E Transistor Chip Q210 KRC405E Transistor Chip Q403 KRC405E Transistor Chip Q407 KRC405E Transistor Chip Q103 KTA2014E Transistor Chip DV141 1SV214 (TH2,F,T) DIODE (LEAD FREE) Varicap Diode C601 100UF/10v (5x7) Capacitor Elect C163 10UF/16 (3x5) Capacitor Elect C218 10UF/16 (3x5)
  • Page 28 MIC201 PFO-9745-CL130 Condensor Mic (with capacitor and wire) R723 100K (+/-1%) Resistor Chip 0402 +/-1% R104 10K 1% Resistor Chip 0402 +/-1% R724 470K (+/-1%) Resistor Chip 0402 +/-1% Resistor Chip 0402 +/-5% R999 Resistor Chip 0402 +/-5% R469 Resistor Chip 0402 +/-5% R471 Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5%...
  • Page 29 R209 Resistor Chip 0402 +/-5% R147 Resistor Chip 0402 +/-5% R405 Resistor Chip 0402 +/-5% R463 Resistor Chip 0402 +/-5% R468 Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5%...
  • Page 30 100K Resistor Chip 0402 +/-5% R435 100K Resistor Chip 0402 +/-5% R456 100K Resistor Chip 0402 +/-5% R457 100K Resistor Chip 0402 +/-5% R461 100K Resistor Chip 0402 +/-5% R601A 100K Resistor Chip 0402 +/-5% R702 100K Resistor Chip 0402 +/-5% R706 100K Resistor Chip 0402 +/-5%...
  • Page 31 R422 Resistor Chip 0402 +/-5% R423 Resistor Chip 0402 +/-5% R434 Resistor Chip 0402 +/-5% R439 Resistor Chip 0402 +/-5% R440 Resistor Chip 0402 +/-5% R449 Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% Resistor Chip 0402 +/-5% R605 Resistor Chip 0402 +/-5% R616 Resistor Chip 0402 +/-5% R717...
  • Page 32 R701 Resistor Chip 0402 +/-5% R729 Resistor Chip 0402 +/-5% R153 2.2K Resistor Chip 0402 +/-5% R202 2.2K Resistor Chip 0402 +/-5% R214 2.2K Resistor Chip 0402 +/-5% R230 2.2K Resistor Chip 0402 +/-5% R233 2.2K Resistor Chip 0402 +/-5% R236 2.2K Resistor Chip 0402 +/-5%...
  • Page 33 R612 Resistor Chip 0402 +/-5% R614 Resistor Chip 0402 +/-5% R705 Resistor Chip 0402 +/-5% R725 Resistor Chip 0402 +/-5% R726 Resistor Chip 0402 +/-5% 270K Resistor Chip 0402 +/-5% R411 Resistor Chip 0402 +/-5% R419 Resistor Chip 0402 +/-5% R420 Resistor Chip 0402 +/-5% R430...
  • Page 34 R111 470K Resistor Chip 0402 +/-5% R231 470K Resistor Chip 0402 +/-5% 470K Resistor Chip 0402 +/-5% R406 470K Resistor Chip 0402 +/-5% R409 470K Resistor Chip 0402 +/-5% R441 470K Resistor Chip 0402 +/-5% R443 470K Resistor Chip 0402 +/-5% 470K Resistor Chip 0402 +/-5% 470K...
  • Page 35 R610 8.2K Resistor Chip 0402 +/-5% R415 820K Resistor Chip 0402 +/-5% R220 Resistor Chip 0402 +/-5% R421 Resistor Chip 0402 +/-5% R243 9.1K Resistor Chip 0402 +/-5% R609 Resistor Chip 0402 +/-5% SW103 Self Return Switch: E-C11ESRA01E Tuning Switch Dual Shaft Volume switch F-09225S B10K/B50K L113x5 L21.8FCx6(D) IC401...
  • Page 36 SW701 SS-24H01-G4 (ROHS) Band Select Switch SW101 SS-12F18-G4 Battery Source Switch SW102 SS-12F18-G4 Light Switch SF601 10.7MHz Ceramic filter SF602 10.7MHz Ceramic filter CF603 LTM450GU Ceramic filter LTM450GU CF401 LTM450GW Ceramic filter LTM450GW XR601 JT10.7MC40-A Discrimator 439MHz (HDF-440DS) SAW filter F-11SMD type C139 TAJA106K006RNJ Tental 10UF/6.3V 3.2x1.6 T-A...
  • Page 37 Antenna Assay (XT511) HWG-29-038 Dynamo Assay (Dynamo+Gear Box) XT511-027 Pin for Dynamo Handle BSBM 2.5, Ni-plate Hanger Pin (XT511) XT511-024 BSBM Dia3.0, Ni-plate XT511-026A Dynamo Shaft Holder Galvanized steel XT511-023 Speaker Bracket (XT511) Galvanized Steel 1.2t XT511-022 Terminal (-) (XT511) PBSP (H) 0.2t, Ni-plate 7N-013 Terminal-B...
  • Page 38 Waste Disposal Instuction insert CARD (Consumer-Oct 0 G5-031A Serial No. Label (with Barcode type) Wood Free Paper BC446-M007 Manual (BC446) LETTER W/MIDLAND BOX TAPE Polybag PE 220 x 300 x 0.05t Polybag220 300 Ploy Bag (for Camp radio Unit) G223-028 Poly Bag PP, 200 x 150 x 0.05t...
  • Page 39 BC446-090 Blister Box (BC446) PVC 0.5t BC446-091 Inner Clamshell (BC446) PVC 0.8t BC446-042 Inner Sleeve (B446) Manila Paper 0.4t with printings Polybag380-380 Polybag 380 x 380 Polybag 380(open) x 380 0.05t Consigned parts XT511-CARADP Car Adaptor (GLCA300400-000) CF-DC3000-103 (5.5) with charging label Microphone BC446-ACADP Adaptor 9V 300mA EU type...