Bill of materials (parts list)

UPDATED 13/01/2018

Grid information supplied by Frank, G0GSR
       
Grid
Location

Resistors

 All resistors 1/4W Metal film unless otherwise noted.   
    SMD types are 0603 unless otherwise noted.   
C9 R1    10k (phantom power for electret mikes)   
C9 R2    1k (used as an RF filter with C2)   
E8 R3    100k (pulldown to keep DC off Q1)   
G8 R4    10k   
G9 R5    100k   
G8 R6    47k   
H9 R7    6k8   
G8 R8    4k7   
G9 R9    47 ohms   
F7 R10   100 ohms   
E10 R11   1k   
G10 R12   1k   
K8 R13   220 ohms   
E8 R14   1k   
  R15   *deleted*   
L3 R16   220k (top half of receive amplifier audio attenuator . (change value if required)   
M4 R17   10k (bottom half of receive amplifier audio attenuator and pulldown to keep DC off Q4)   
X R18   220 ohms SMD (top half of TDA2003 negative feedback attenuator)   
X R19   2.2 ohms SMD (bottom half of TDA2003 negative feedback attenuator)   
X R20   1 ohm SMD (TDA2003 HF load resistor)  
       
G1 R21   22 ohms (OpAmp decoupling)   
C4 R22   10k   
C3 R23   100k   
G3 R24   7k5   
F3 R25   15k   
F4 R26   30k   
H4 R27   7k5  
H2 R28   7k5   
I2 R29   100k   
J2 R30   75k (corrects DC bias on U1b)   
J2 R31   4k7 (OR 10k for less EQ) (sets hardware transmit EQ shelf)   
J3 R32   10k   
I3 R33   10k (sets gain of U1b) UPDATED (was 1.5k)   
J5 R34   10k   
J4 R35   10k   
H5 R36   180 ohms   
G7 R37   100k   
H8 R38   1k   
J8 R39   1k   
H8 R40   27k (finely sets bias midpoint of dsPIC ADC, compensates for voltage drop across R56 and R57)   
I7 R41   10k   
N5 R42   100 ohms   
D5 R43   560 ohms   
D4 R44   10k   
F5 R45   47k (sets output attenuation to suit transceiver mike gain)   
H5 R46   10k   
H4 R47   10k   
F4 R48   100k   
F4 R49   150k (sets DC bias on U2a)   
G4 R50   100k   
F5 R51   1k   
J3 R52   10k   
K4 R53   10k   
J5 R54   10k   
K5 R55   10k   
I9 R56   10k   
J8 R57   10k   
I8 R58   1k   
I8 R59   1k   
D6 R60   10k   
E6 R61   100k   
C5 R62   10k   
D7 R63   10k   
D8 R64   10k   
K5 R65   1k   
K5 R66  1k   
L5 R67   1k   
M5 R68   1k   
M5 R69   1k   
N5 R70   1k   
N8 R71   1k   
M8 R72   1k   
N6 R73  100  
N6 R74  100  
N7 R75  100  
L8 R76   1k   
L8 R77   1k   
O10 R78   220 ohms (sets headphone drive level and affects OpAmp loading)   
O10 R79   220 ohms (sets headphone drive level and affects OpAmp loading)   
O9 R80   10k (pulldown to prevent headphone thumps)   
M10 R81   47 ohms (RC filter with C56 to prevent RF affecting U1a)   
C10 R82   100 ohms (RC filter with C57 helps RF filter PTT line)   
C10 R83   1k (has been selected to pass just enough current to switch dsPIC pin 14 RB5 from PTT line)   
N4 R84   390 ohms (new LED backlight current) Increase value to dim LED.  
       
  R100   10 ohms to 47 ohms (not critical - used for decoupling and current limiting on 12V rail)  
  R101   100 ohms (current limiting for D19 TOSLINK LED)   
  R102   100 ohms (current limiting for Q9 TOSLINK driver transistor)   
  R103   1k   
  R104   2k2 (sets LED driver IC bright current)   
  R105   20k (sets LED driver IC dim current)   
  R106   1k   
  R107   1k   
  R108   1k   
  R109   10k   
  R110   100k   
  R111   1k (dual colour LED dim current)   
  R112   390 ohms (old LED backlight current) OBSOLETE Use R84 & D20 instead!   
  R113   470 ohms (dual colour LED bright current)   
  R114   1k (sets decimal point bright current)   
  R115   10k (logic pulldown)   
       
       
 

Capacitors

 SMD types are 0603 unless otherwise noted.  
    Some SMD pads are enlarged to also enable larger types to be fitted: 0805, 1206 etc.  
    * Capacitors C0 to C5 have been renumbered  
       
  C0    2n2 SMD or leaded ceramic (RF bypass) Located at the back of the electret mike element   
D10 C1    1uF Tantalum* 10V or more (Low leakage audio coupling) *Monolithic ceramic could also be used.  
  C2    2n2 SMD (2200pF)(RF bypass)  * Important for RF filtering.
F9 C3    1uF Tantalum* 10V or more (Low leakage audio coupling) *Monolithic ceramic could also be used.  
  C4    2n2 SMD (2200pF)(RF bypass connected from Q2 base to GND)  * Important for RF filtering.
  C5    100n ceramic SMD  (improves PWM filtering)   
  C6    100n ceramic SMD   
K9 C7    100n ceramic monolithic OR SMD   
F7 C8    470uF 10V miniature electrolytic 0.1 inch (2.54mm) lead spacing  * Critical size - capacitor height less than 10mm  
F8 C9    4u7 6V or more miniature electrolytic 4x7mm can size   
D8 C10   100uF 10V miniature electrolytic 4x7mm can size SPECIAL SIZE   
  C11   100n SMD (MKP could also be fitted) (TDA2003 input resistance is typically 150k, so 100n should be adequate for good bass response to below 50Hz)   
K1 C12   470uF 10V miniature electrolytic 0.1 inch (2.54mm) lead spacing   
N4 C13   100uF 16V miniature electrolytic 0.1 inch (2.54mm) lead spacing  * Critical size- capacitor height less than 10mm 
  C14   100n SMD ceramic   
  C15   220n SMD ceramic   
N1 C16   1000uF 10V electrolytic 3.8mm lead spacing, 8mm diameter  * Critical size  Note: Some eBay capacitors of this type have very limited lifespan.  
  C17   10n SMD ceramic   
  C18   10n SMD ceramic   
  C19   100n SMD ceramic   
  C20   100n SMD ceramic   
H1 C21   22uF to 100uF 16V electrolytic 5x7mm can size  * Critical size - capacitor height less than 10mm 
E1 C22   1000uF 16V electrolytic 0.2 inch lead spacing, 10mm diameter (maximum ~11mm) x16mm high  * Critical size  
F2 C23   100uF 10V miniature electrolytic 4x7mm can size SPECIAL SIZE *** On PCB 260 and later, C23 is a 47uF 16V Tantalum SMD size "C" capacitor, mounted on the top layer  
F2 C24   100uF 10V miniature electrolytic 4x7mm can size SPECIAL SIZE  *** On PCB 260 and later, C24 is a 47uF 10V or 16V Tantalum SMD size "C" capacitor, mounted on the top layer  
  C25   10n SMD ceramic (RF bypass for Rx In)   
  C26  10n SMD ceramic (RF bypass for Rx In)   
D4 C27   10UF 25V miniature electrolytic 4x7mm can size SPECIAL SIZE   
D3 C28   10UF 25V miniature electrolytic 4x7mm can size SPECIAL SIZE   
  C29   330pF SMD or disc ceramic (RF bypass for U2b)   
  C30   330pF SMD or disc ceramic (RF bypass for U2b)   
I1 C31   47nF MKP polyester (sets hardware transmit EQ turnover frequency)   
I4 C32   100uF 10V miniature electrolytic 4x7mm can size SPECIAL SIZE   
I4 C33   22uF 10V miniature electrolytic 4x7mm can size SPECIAL SIZE   
  C34   100n monolithic ceramic or SMD   
  C35   100n monolithic ceramic or SMD   
N8 C36   470uF 10V miniature electrolytic 0.1 inch (2.54mm) lead spacing  * Critical size - capacitor height less than 10mm 
  C37   100n monolithic ceramic or SMD   
J9 C38   100uF 10V miniature electrolytic 4x7mm can size SPECIAL SIZE   
J7 C39   1n SMD OR ceramic disc (analog input antialias filter and RF bypass)   
J7 C40   1n SMD OR ceramic disc (analog input antialias filter and RF bypass)   
I9 C41   10u 25V miniature electrolytic 4x7mm can size SPECIAL SIZE   
J10 C42   10u 25V miniature electrolytic 4x7mm can size SPECIAL SIZE   
  C43   10n SMD ceramic   
  C44   10n SMD ceramic   
E5 C45   10u 25V miniature electrolytic 4x7mm can size SPECIAL SIZE   
  C46   100p SMD or disc ceramic   
E5 C47  10u 25V miniature electrolytic 4x7mm can size SPECIAL SIZE   
  C48   100p SMD or disc ceramic   
F6 C49   22u 10V miniature electrolytic 4x7mm can size SPECIAL SIZE   
  C50   330pF SMD or disc ceramic (compensation for U1a)   
  C51   10n SMD ceramic Not used on prototype **   
    ** If D6 is a through hole type, C51 can be a large 1206 SMD type mounted on the PCB bottom layer. A leaded ceramic can also be used.  
    ** If D6 is an SMD type, C51 can be a small 0603 SMD type mounted on the top PCB layer.    
    ** With careful placement, a 0603 SMD C51 could also be placed underneath D6 on the top layer.   
  C52   10n SMD ceramic   
  C53   1n SMD ceramic   
  C54   Deleted   Replaced with Zener diode D29 
L5 C55   10u 16V Tantalum OR 1210 SMD ceramic Critical (bypass for internal dsPIC voltage regulator)   
L4 C56   1u 10V Tantalum OR miniature electrolytic OR SMD 100n to 1uF   Audio coupling to U4. 
N9 C57   470uF 10V miniature electrolytic 0.1 inch (2.54mm) lead spacing  * Critical size - capacitor height less than 10mm  
  C58   10n SMD ceramic   
  C59   10n SMD ceramic   
  C60   10n SMD ceramic   RF grounding for edge tracks on top layer 
  C61   10n SMD ceramic   RF grounding for edge tracks on top layer 
  C62   10n SMD ceramic   RF grounding for edge tracks on top layer Optional 
  C63   10n SMD ceramic   RF grounding for edge tracks on top layer Optional 
  C64   10n SMD ceramic   RF grounding for Output Mini-DIN shell terminal Optional
  C65   10n SMD ceramic   RF grounding for Input Mini-DIN shell terminal Optional
  C66   330p SMD ceramic   RF bypass for U1a non-inverting input. Pads near C50 but unmarked on PCB.
       
       
  These bypass capacitors are not critical in value:     
  C100   47uF 16V SMD size "C" Tantalum not critical   
  C101   47uF 10V or 16V SMD size "C" Tantalum not critical   
  C102   47uF 16V SMD size "C" Tantalum not critical Not used on prototype 1   
  C103   47uF 16V SMD size "C" Tantalum not critical Not used on prototype 1   
       
       
 

Inductors

    
       
C2 L1  NiZn 3.5x6.0mm Ferrite bead on lead  Use MnZn high permeability ferrite to improve RF filtering.
C2 L2  NiZn 3.5x6.0mm Ferrite bead on lead  Use MnZn high permeability ferrite to improve RF filtering.
C4 L4  NiZn 3.5x6.0mm Ferrite bead on lead  Use MnZn high permeability ferrite to improve RF filtering.
C7 L6  NiZn 3.5x6.0mm Ferrite bead on lead  Use MnZn high permeability ferrite to improve RF filtering.
C8 L7  NiZn 3.5x6.0mm Ferrite bead on lead  Use MnZn high permeability ferrite to improve RF filtering.
C5 L3   1mH (1000uH) miniature axial leaded RFC
 (1 millihenry = Brown Black Red)		  
H6 L5   10uH miniature axial leaded RFC
 Must have less than 1 ohm DC resistance,
 and more than 10mA rating		  * Critical parameters for proper CPU operation.
  L8   Ferrite bead on flying lead OPTIONAL
 Not used on prototype 		  
       
 

Diodes

  Diodes D1 to D11 have been renumbered 26/01/2015  
     Be careful to observe correct polarity.  
       
  D1   Surface mounted 1N4001 OR similar SMD power diode (for reverse polarity protection)   
K7 D2   3v6 1W Zener diode
 for CPU overvoltage protection 		  
H7 D3   1N4148   
P4 D4   1N4148   
P4 D5   1N4148   
B7 D6   18V 400mW leaded or SMD Zener diode   Not required for Amateur transceivers.
C6 D7   18V 400mW leaded or SMD Zener diode   
E6 D8   18V 400mW leaded or SMD Zener diode  
  D9   18V to 33V SMD Zener diode
Must be greater than 16V, but below 45V)
Optional (For additional protection of Q7) 		  
O4 D10   3mm or SMD superbright white LED for keypad backlighting   
E10 D11   1N4148   
  D12   3v3 SMD Zener diode  
       
  D100   Two wire dual colour 3mm red/green LED   2x SMD LEDs can also be used on commercially made PCB 
  D101  1 digit 7 segment Common Anode LED display 0.56 inch White  
  D102   3mm Green LED   SMD can also be used on commercially made PCB 
  D103   3mm Green LED   SMD can also be used on commercially made PCB 
  D104   3mm Green LED   SMD can also be used on commercially made PCB 
  D105   3mm Yellow LED   SMD can also be used on commercially made PCB 
  D106   3mm Yellow LED   SMD can also be used on commercially made PCB 
  D107   3mm Yellow LED   SMD can also be used on commercially made PCB 
  D108   3mm Orange LED   SMD can also be used on commercially made PCB 
  D109   3mm Orange LED   SMD can also be used on commercially made PCB 
  D110   3mm Red LED   SMD can also be used on commercially made PCB 
  D111   Superbright red LED 5mm or 3mm   
  D112   Superbright white LED 5mm or 3mm OBSOLETE Use D10 LED instead!   
       
       
 

Transistors

    
       
F9 Q1    BC549C NPN TO92   
G9 Q2    BC549C NPN TO92   
H9 Q3    BC557  PNP TO92   
M3 Q4    BC549 or 2N3904 NPN TO92   (NOTE: the 2N3904 package has reversed C and E leads) 
C6 Q5    2N7000 MOSFET TO92   Rx switch. Not required for Amateur transceivers.
D6 Q6    2N7000 MOSFET TO92   
E7 Q7    BC557  PNP TO92   
L10 Q8    BC549 or 2N3904 NPN TO92   (NOTE: the 2N3904 package has reversed C and E leads)
  Q9    MMBT3904 NPN SMD   
  Q10  MMBT3904 NPN SMD   
  Q11   MMBT3904 NPN SMD   
  Q12   MMBT3906 PNP SMD   
  Q13   MMBT3904 NPN SMD   
  Q14   MMBT3904 NPN SMD   
       
       
 

ICs

    
       
K3 U1   M5218AL SIP Dual OpAmp   
G5 U2   M5218AL SIP Dual OpAmp   
I6 U3   dsPIC33FJ64GP802 28-pin DIP Digital Signal Controller
*OR*
dsPIC33FJ128GP802 28-pin DIP Digital Signal Controller		 Available from Microchip online http://www.microchipdirect.com/ProductSearch.aspx?keywords=DSPIC33FJ64GP802I/SP
*OR*
http://www.microchipdirect.com/ProductSearch.aspx?keywords=DSPIC33FJ128GP802I/SP
N2 U4   TDA2003 10W audio amplifier   
  U5   TDA2822 8 pin DIP 2W stereo audio amplifier  (used as a bridged LED driver - these were purchased from G&C on eBay for under $2US for 10) 
  U6   SM16126D SMD SOIC-24 16 bit serial constant current common anode LED driver IC  
       
 

Regulators

    
       
  Reg1   AMS1117-5  5 volt SMD regulator SOT-223 package
  Reg2   AMS1117-3.3  3.3 volt SMD regulator SOT-223 package
  Reg3   AMS1117-3.3  3.3 volt SMD regulator SOT-223 package
       
 

Switches

    
       
  SW1-SW4  6x6mm right angle PCB mount tactile switches, 6.85mm shaft  
       
 

Connectors

    
       
B2 J1   5.5 x 2.1mm PCB mount DC power socket SPECIAL   
O5 J2  4-way 0.1 inch (2.54mm) Pin header socket strip  
B3 J3  Ultra slim 4pin 3.5mm stereo PCB mount socket SPECIAL   Lumberg 1503-07
B7 J5  Ultra slim 4pin 3.5mm stereo PCB mount socket SPECIAL  Lumberg 1503-07
Q10 J7  Ultra slim 4pin 3.5mm stereo PCB mount socket SPECIAL  Lumberg 1503-07
  J10  Ultra slim 4pin 3.5mm stereo PCB mount socket SPECIAL  Lumberg 1503-07
B5 J4  8pin Mini DIN socket SPECIAL   
B9 J6  8pin Mini DIN socket SPECIAL   
O4 J8   10way 0.1 inch (2.54mm) Pin header socket strip   
N9 J9   4way 0.1 inch (2.54mm) Pin header socket strip  
  Machine pin IC socket strips for U3 (two strips of 14 pins)     
  14x 2.54mm right-angle header pins for Display PCB 1 connectors

OR...

14x 2.54mm straight header pins for Main PCB connectors

  Prototype 1 used the longer pins from a strip of right-angle dual row pin headers

Later units use straight header pins mounted on the main PCB, and header sockets mounted on Display PCB 1, as this is much easier to do! See webpage section titled "Simpler PCB pin mounting".

  Gold plated pins are recommended to provide most reliable contact. 
  4x 2.54mm straight header pins for Display PCB 1 mechanical mounting   Gold plated pins are recommended to provide most reliable contact. 
  2x 2.54mm dual header pin sockets for Display PCB 1 mechanical mounting   
  2x Matching 8-pin mini-DIN plugs for transceiver fly leads  Must match mini-DIN socket pin pattern!  
  1x Microphone plug to suit transceiver     
  2x 3.5mm stereo plugs for receive audio OR pre-made 3.5mm to 3.5mm stereo lead    
  1x 3.5mm Mini-TOSLINK to normal TOSLINK cable for digital audio output  Optional   
       
       
 

Misc

    
       
  F1 1.65A 30V RUEF135 PolySwitch resettable fuse (ideally use two of these, one on the PCB as shown, and one at the bench power supply)

An SMD Polyswitch device of between 1 and 2 amps can be fitted to the PCB instead.

    
  Hookup wire     
  Multicore + shielded cable for transceiver microphone adaptor fly leads     
  Microphone   Preferably a unidirectional electret in a stage microphone housing (with pop filtering) mounted on a boom arm   
  Small solder lugs for enclosure grounding   Not used on prototype   
  1mm thick copper CPU shim (eBay) or equivalent copper sheet for heatsinking U4 No insulator required     
  M3 nut, M3 bolt M3 star washer for heatsinking U4     
  Acrylic or Polycarbonate sheet for front panel   Prototype 1 used 3mm dark grey acrylic sheet, but this causes problems with the 2.5mm long headphone connector barrel  Clear 1.5mm Polycarbonate sheet works well with adhesive window tint applied.
  Adhesive window tint if clear front panel is used   Used on prototype 2.  
  Enclosure   The PCB has been designed to fit the economical extruded aluminium BOX-1110 from http://rfsuppliers.com Outer dimensions: 24mm(H) x 70mm(W) x 110mm(L)  

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