Kth - sdr - kit

6/13/2010 KTH - SDR - KIT Page 9
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Wind the 2 x 10 turns reversed to each other on the toroid L1 with the delivered 0.4 mm wire. Glue a nylon
ring between the toroid and the motherboard.
Component list
C1 = 100n (CAPACITOR 1206 SMD)
C2 = 100n (CAPACITOR 1206 SMD)
C3 = 100n (CAPACITOR 1206 SMD)
C4 = 100n (CAPACITOR 1206 SMD)
C5 = 10µ/16 (EL-CAPACITOR 1210 SMD)
C6 = 100n (CAPACITOR 1206 SMD)
C8 = 100n (CAPACITOR 1206 SMD)
C9 = 470µ/16 (EL-CAPACITOR 5.04 MM PAD DISTANCE)
C10 = 100n (CAPACITOR 1206 SMD)
C11 = 100n (CAPACITOR 1206 SMD)
C12 = 10µ/16 (EL-CAPACITOR 1210 SMD)
CON1 = USB-B (USB-B CONNECTOR ASSMANN)
CON2 = USB-A (USB-A CONNECTOR ASSMANN)
CON3 = BOX HEADER 2*5 (BOX HEADER 2*5)
CON4 = BOX HEADER 2*5 (BOX HEADER 2*5)
CON5 = CARDEDGE 2*15 (CARDEDGE 2*15 TYCO-5530843-2)
CON6 = CARDEDGE 2*15 (CARDEDGE 2*15 TYCO-5530843-2)
CON7 = CARDEDGE 2*15 (CARD CONNECTOR 2*15 TYCO-5530843-2)
CON8 = CARDEDGE 2*15 (CARD CONNECTOR 2*15 TYCO-5530843-2)
CON9 = BOX HEADER 2*5 (BOX HEADER 2*5)
CON10 = JACK 2.1 mm (JACK CONNECTOR CONRAD No-733954-89)
D1 = Z3V6 (ZENERDIODE 1206 SMD)
D2 = 1N4001 (DIODE 1N4001 SEMICRON DO-213AB CONRAD No- 160265-89)
J1 = RCA CINCH (RCA CINCH PCB CONN CONRAD-736899-89)
J2 = RCA-CINCH (RCA CINCH PCB CONN CONRAD-736899-89)
J3 = 2x1 JUMPER (2x1 JUMPER )
L1 = TORROID FT50-43 (TORROID FT50-43 AMIDON)
R1 = O ohm (RESISTOR 1206 SMD)
S1 = MINI-THUMBLER SWITCH (TUMBLER SWITCH SINGLE POLE)
VR1 = LM1117-5 (LM1117-5.0 VOLTAGE REGULATOR SOT 223-N06B)
The diode D2 prevents damage if the power supply is connected in the wrong way.
Supply 12 Volt to the DC connector and measure the voltage on J3 which should be approximately 8 – 8.5
Volt. This is not critical. If all parts are installed and the supply voltage on J3 is correct, you can mount the
motherboard in the enclosure shell as described in Chapter 2.1.
Mount the front- and rear panel on the lower shell with the self tapping screws and check if the connectors fit
in the corresponding holes. Correct if necessary the 10 mm spacers by putting a washer between the spacer
and the shell or by shorten the spacer with a file.
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Instruction manual KH-SDR wideband receiver Kit No-1021. All rights reserved KTH-SDR-KIT. Software design by PA0RWE.