ICAS_ISDR-136-Kit_user.pdf

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1、Assembly Manual for ISDR-136-KITAssembly Manual for ISDR-136-KIT ICAS Enterprises Last Updated March 21st, 2012 This SDR receiver kit is intended for the 136kHz band. The kit utilizes DIP IC components (no SMD) so that even a beginner can assemble the kit in a few hours. (FST3253 is converted to DIP

2、 as shipped, so you dont need to train yourself how to solder SMD.) The kit consists of an SDR main PCB and an I/F PCB for your easier assembly. Specifications:Specifications: RX Coverage: 106kHz 154kHz (when a 48kHz sound card is used.) SDR Center Freq. ： 130kHz (8.32MHz 16 4) Operational Voltages

3、： 9VDC 13.8VDC (The white connectors are not included in the kit. If needed, please prepare at end users end. ) Case HistoryCase History The built receiver has been used to run a 137,777kHz grabber at: http:http: /icas.to/argo/icas.to/argo Parts List SDR Main PCBParts List SDR Main PCB Marking Value

4、DescriptionRemarks D11N4004 Diode C10.01uF Ceramic Cap. C24.7uF Ceramic Cap. C30.1uF Ceramic Cap. C4330pF Ceramic Cap. C5330pF Ceramic Cap. C60.1uF Ceramic Cap. C70.1uF Ceramic Cap. C80.047uF Ceramic Cap. C90.01uF Ceramic Cap. C104.7uF Ceramic Cap. C110.1uF Ceramic Cap. C120.1uF Ceramic Cap. C134.7u

5、F Ceramic Cap. C140.01uF Ceramic Cap. C154.7uF Ceramic Cap. C160.1uF Ceramic Cap. C170.1uF Ceramic Cap. C180.1uF Ceramic Cap. C190.1uF Ceramic Cap. C250.047uF Ceramic Cap. R110 resistor R210 resistor R3100 resistor R410k resistor R51k resistor R64.7k resistor R74.7k resistor R81k resistor R9100 resi

6、stor R10100 resistor R1110 resistor R1210 resistor R1310k resistor R1410k resistor Continued to next page Continued from previous page IC174AC74 4-time Divideror 74HC74 maybe supplied IC27805 5VDC 3-terminal regulator IC3FST3253 already converted to DIP 16- pin adapter C4NJM2068 OP Amp. F1Fuse Elect

7、ronic Fuse 0.5A Socket24-pin DIP IC socket, WideNeeds to cut to 16 pins Socket8-pin DIP IC socket Pinheader Socket 10-pin female black 1pc 2-pin female black Switch2P Toggle Switch 3P may be supplied ConnectorBNC connector, female ConnectorPower Connector a pair of Jack and Socket 2.1mm Jack3P mini-

8、stereo jack3.5mm Assembly of SDR Main PCBAssembly of SDR Main PCB Start assembling in referring to the schematics which are attached at the last part of this manual. IC SocketsIC Sockets Use the IC sockets if required. Maintenance will be easier if you use sockets. IQ-OUTIQ-OUT “”先 of IQ-OUT should

9、be connected to the tip of 3P mini-stereo plug, and “” 中to the ring of the plug respectively. The center of IQ-OUT should be connected to the ground of the plug. 9PIN-HEADER9PIN-HEADER 10-pin black female socket should be soldered onto “9PIN-HEADER”. Due to the availability of the socket, one pin is

10、 not needed, so only 9 pins will be used. (You had better pull out the right-most pin to make it a 9-pin socket.) EXT-PWREXT-PWR This is to provide a 5VDC power to the I/F PCB. Place the 2-pin black header pin socket on Holes 1 and 2, and solder. Hole 3 is not used. Hole 3Hole 3 supplies 12VDC, and

11、is for future expansion use. Do not connect anythingsupplies 12VDC, and is for future expansion use. Do not connect anything to Hole 3 unless you need to modify the circuit yourself. to Hole 3 unless you need to modify the circuit yourself. /RX-EN/RX-EN Shorting the /RX-EN pins will activate RX. For

12、 general use, you need to have the /RX-EN pins shorted while in RX. When you use this receiver with a transmitter, the pins must be shorted while in RX, and had better be open while in TX. LO-INLO-IN If you prefer to use an external local oscillating frequency source instead of the bundled 8.32MHz O

13、SC, you can provide the external signal from this terminal. Leave the terminal intact when you use the bundled 8.32MHz OSC. 1-OSC, 2-OSC, 3-OSC, 4-OSC1-OSC, 2-OSC, 3-OSC, 4-OSC If you prefer to use a square OSC instead of the bundled 8.32MHz OSC, you can place such an OSC directly here. (No division

14、 will be made in that case.) Leave the terminal intact when you use the bundled 8.32MHz OSC. Parts List I/F PCBParts List I/F PCB MarkingValueDescriptionRemarks C10.022uF Ceramic Cap. C20.047uF Ceramic Cap. C30.022uF Ceramic Cap. C40.1uF Ceramic Cap. C50.1uF Ceramic Cap. C60.1uF Ceramic Cap. R110k r

15、esistornot used L168uH Axial type InductorBlue-Grey-Black L268uH Axial type InductorBlue-Grey-Black Ferrite Core - FT50-61Prim 28 turns - about 58cm Sec 16 turns - about 34cm x 2 OSC8.32MHz Oscillator IC174HC4060 Divider ICDivided by 16 PIN- HEAD Header Pin9pins + 2pins UEWUEW Wirerequired length As

16、sembly of I/F PCBAssembly of I/F PCB Start assembling in referring to the schematics which are attached at the last part of this manual. How to Wind L3:How to Wind L3: When a wire goes through the core once, it is counted as one turn. Example of “One Turn” (The core shown above is for reference only

17、 and does not represent the real core used in this kit. ) L3 consists of the primary winding (1-6) and the secondary windings (2-5 & 3-4) First, you can start winding the primary 28 turns on the FT50-61 core. (The above reference does not represent the actual core or winding, but for easier referenc

18、e only.) Next, prepare two wires and twist them once at centers of 2 to 3cm. Over the primary winding, wind the secondaries 16 turns in the same direction. You can refer to the following photos showing how to install the core onto the I/F PCB. Primary, White, 28 turns Secondary, Red, 16 turns (bi-fi

19、lar) Secondary, Black, 16 turns(bi-filar) L1&L2L1&L2 Wind 14 turns on FT37-43 core. (not used any longer for now) Now, L1 and L2 use axial type inductors. The body looks like conventional resistors, but has green body color with color codes printed. JP1JP1 Underneath the PCB, place the 2-pin header

20、pins onto the Holes 1 an 2 of JP1 and solder. Hole 3 provides 12VDC for future use. Do not connect anything to thisHole 3 provides 12VDC for future use. Do not connect anything to this Hole 3 unless any modification is required. Hole 3 unless any modification is required. JP2JP2 This terminal can be

21、 used when you use an external LO source such as a USB synthesizer kit. Leave this intact when you use the bundled 8.32MHz OSC. J2J2 Underneath the PCB, solder the 9-pin header pins. (On the schematics, J1 does not exist. “J1” was deleted after(On the schematics, J1 does not exist. “J1” was deleted

22、after modification was made.) modification was made.) SW1/SW2SW1/SW2 When you use an external signal source for LO, you can switch the terminal ON/OFF. When you use the bundled 8.32MHz OSC, just jumper here so the power is always connected to the OSC. OSCOSC The Pin 1 of the 8.32MHz OSC should fit i

23、nto the Hole OSC1. The OSC is of a 8-pin DIP IC type, so the Pin 1 is located left-most at the bottom when the orientation marking is placed at your left. Assembly CompletionAssembly Completion After the completion of the assembly, insert the I/F PCB onto the main SDR PCB. Before casing, make sure that the kit works all OK. Download your favorite SDR software and enjoy listening to the 2200m band! ISDR-136-KIT SDR Main PCB SchematicsISDR-136-KIT SDR Main PCB Schematics 136kHz I/F PCB Schematics 136kHz I/F PCB Schematics (R1 10k is not used.)(R1 10k is not used.)