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SHORTWAVE DADDY USB AM/FM/SHORTWAVE RADIO ASSEMBLY AND OPERATING MANUAL...
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TABLEROCK INSTRUMENTS CO. PLEASE VISIT OUR WEBSITE AT: WWW.SHORTWAVEDADDY.COM FOR UPDATES AND ADDITIONS COPYRIGHT 2012 ALL RIGHTS RESERVED No part of this manual may be reproduced without the express written consent of Tablerock Instruments Co.
Introduction Thank you for purchasing the ―Shortwave Daddy‖—an easy to assemble PC based and USB powered AM/FM/Shortwave radio kit with many features that will delight both DX shortwave enthusiasts and experimenters seeking to learn more about microprocessor controlled radios. The radio circuit and PCB (printed circuit board) have been designed to make assembly easy for electronics novices who have minimal soldering skills.
6. Quit working for the day if you become tired or inattentive. 7. Never connect the Ground Header or any connector on the Shortwave Daddy to a mains ground (outlet plug ground) or mains line connection (outlet plug ―hot‖ terminal—110Volts) or the neutral terminal. Connection to a mains ground...
Radio Specifications: Worldwide AM Band 520kHz – 1710kHz Shortwave Band 2.3MHz – 26.1 MHz Worldwide FM Band 64MHz – 108 MHz Advanced AM/FM/Shortwave seek tuning AM/FM/Shortwave digital tuning Seven selectable AM/Shortwave channel filters (1kHz, 1.8 kHz, 2kHz, 2.5kHz with gradual roll off, 3kHz, 4kHz, 6kHz) ...
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Radio IC: Radio functionality is achieved through the use of the Silicon Labs SI4735 broadcast radio receiver IC (integrated circuit). The SI4735 is a digital CMOS AM/FM/Shortwave radio receiver IC that integrates the complete tuner function from antenna input to audio output. USB Audio Codec: ...
Assembly Instructions: Tools and Materials Required for Assembly: Soldering Iron Solder (Radio Shack 62/36/2 Rosin-Core Solder .022 diameter, part number 64-013 or equivalent) Tip tinner and cleaner (helpful to clean soldering tip; Radio Shack part number 64-020 or equivalent) ...
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One of the enjoyable aspects of building electronics projects is the leisurely pace that can be taken to build a project. We highly recommend that you take this approach in building the Shortwave Daddy. A much better final project will result if you spread the work over several days or nights.
Step 1: 1. Without soldering any components, insert all of the resistors, capacitors, inductors and diodes into their locations on the PCB in accordance with the values printed on the PCB next to the number of the component. (Figure 1) When inserting each component, make sure that the component is pulled down as close to the surface of the PCB as possible.
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3. Starting from one end of the reverse side of the PCB, solder all of the capacitors, resistors, diodes and inductors. 4. Using a wire cutter, trim the excess length of the components leads. Be careful not to cut the solder joint. (Figure 5) It is acceptable for the residual component lead to protrude 1mm - 3mm from the solder joint.
Step 2: 1. Insert the 20.000 MHz, 12.000 MHz and 32.768 KHz crystals (XTAL) and apply a small amount of flux on the bottom solder hole where the leads protrude. Then, solder the 20.000 MHz, 12.000 MHz and 32.768 KHz crystals and trim the excess length of the crystal leads on the bottom of the PCB.
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Figure 7 7. Insert the six pin male Programming Header, apply a small amount of flux on the bottom solder holes where the leads protrude and solder the Programming Header. 8. Insert the two pin male Ground Header, apply a small amount of flux on the bottom solder holes where the leads protrude and solder the Ground Header.
Figure 8 Step 3: 1. The next step requires handling and soldering of the SI4735, PCM2906C and OPA2353 PCB sub-assemblies. Special Note! The SI4735, PCM2906C and OPA2353 PCB sub-assemblies are susceptible to damage from ESD (electrostatic discharge). ESD is more commonly known as static electricity.
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2. Although not absolutely necessary, the use of a breadboard makes soldering the male headers to the PCB assemblies much easier. If you have a breadboard, insert the 14 pin male headers on the breadboard such that the PCB sub- assemblies can be inserted on top of the male headers.
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Figure 11 If you do not have a breadboard, take care that the male headers are soldered to the PCB sub-assemblies such that the headers are perpendicular to the PCB sub-assemblies. 3. Familiarize yourself with the location of Pin 1 of each of the PCB sub-assemblies. Pin 1 is labeled on each PCB sub-assembly.
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Figure 12 5. While observing proper ESD procedures (see Special Note above) insert the PCM2906C PCB sub-assembly on the main PCB. (Figure 13) The PCM2906C PCB sub-assembly is oriented with Pin 1 on the right hand top side of the PCB sub-assembly. It may be helpful to use a piece of blue painter’s masking tape to temporarily hold the PCB sub-assembly in place for soldering.
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6. While observing proper ESD procedures (see Special Note above) insert the OPA2353 PCB sub-assembly on the main PCB. (Figure 14) The OPA2353 PCB sub-assembly is oriented with Pin 1 on the right hand bottom side of the PCB sub-assembly. It may be helpful to use a piece of blue painter’s masking tape to temporarily hold the PCB sub-assembly in place for soldering.
Step 4: 1. Apply flux to the 16 gold colored solder pad holes on the LCD display on the side where the screen in located. Then, insert the 16 pin Male Header into the solder holes of the LCD such that the long side of the male header protrudes on the side opposite the LCD screen.
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Connector, stand the PCB up vertically in the alcohol and use an old toothbrush or stiff paint brush to thoroughly clean all flux and solder residue from the rear of the PCB. (Figure 17) Take your time and clean both sides. 5.
Step 5: Insert the (5) tactile momentary push-button switches into their solder holes on the man PCB. Four (4) of the push-button switches are installed at the bottom right hand corner of the PCB and one push-button switch (reset switch) is installed at the top right hand corner of the main PCB. The switches are designed to ―snap‖...
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care that you do not bend or misalign the pins with the holes of the DIP socket. The Keypad and LCD are each mounted to the main PCB with four (4) 2-56 X 7/8‖ screws, sleeves, spacers, washers and nuts. Insert a screw into a sleeve and then push the screw and sleeve up through the bottom of the first mounting hole for the keypad.
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Figure 21 Insert the Keypad male pins into the seven (7) pin female header. The Keypad mounts on the four (4) mounting screws. It may be necessary to slightly loosen the mounting screws to properly align the Keypad holes. Secure the Keypad with a nylon washer and a 2-56 nut on each mounting screw.
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Figure 23 The completed radio is shown in Figure 24. Figure 24...
Note: The 3.5mm jack can only serve as an antenna jack. It is not a headphone jack. 2. Connect the Shortwave Daddy to a PC or laptop USB port using a standard USB printer cable. 3. Restart your PC or Laptop.
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Figure 26 6. At this point the band mode must be chosen. Push the first push-button (labeled AM Mode) for the AM/Shortwave band. The LCD display will flash ―CHANGING TO AM MODE‖ 7. Test the operation of the PC or Laptop’s speaker sound system as follows: ...
Click on ―Properties‖ in the lower right-hand bottom of the screen Click on the ―Listen‖ tab Make sure the ―Listen to this device‖ box is checked Click on ―Apply‖ at the bottom of the screen Click on the ―Advanced‖ tab ...
When this occurs more than 3or 4 times without restarting the PC or laptop, the USB port may stop working which results in no sound coming from the speakers. Note: This issue is not the fault of the Shortwave Daddy and is solely an issue with the Microsoft Windows operating system.
Restart the computer. After the computer starts, Windows will automatically scan for hardware changes and reinstall all the USB controllers that you uninstalled. Check the Shortwave Daddy to see whether it is working Changing to AM MODE (Which also includes Shortwave): 1.
Entering a Frequency on the FM Band: 1. After choosing FM MODE, enter the desired frequency in a five (5) digit format on the Keypad. To enter an FM station frequency such as 96.90 MHz, enter 09690 and then press the ―#‖key. ...
Changing the Bandwidth for the AM/Shortwave Channel Filter: 1. While in AM MODE, the bandwidth of the AM/Shortwave channel filter can be changed from the default bandwidth of 2 kHz. 2. There are seven (7) options. At any time while in AM MODE , the bandwidth can be changed by entering the applicable five (5) digit code as follows and then pressing the ―#‖: Code...
In-Circuit Programming of the Microprocessor: The program for the PIC18F2550 which controls the Shortwave Daddy can be changed by uploading a new program using the 6 pin In-Circuit Programming Header which is located at the bottom of the main PCB, next...
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the user’s own program to take advantage of the many features which the Silicon Labs SI4735 IC can implement. 2. The program which is pre-loaded on the PIC18F2550 was written in C . The user may prefer to write their own program using another language, such as BASIC.
Microchip In-Circuit protocol. Antenna and Ground Connections: 1. The Shortwave Daddy has two (2) connectors for the use of a variety of antennas along with a two (2) pin male Ground Header for the connection of an external ground .
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Figure 31 6. Never connect the Ground Header or any antenna connector or any part of the Shortwave Daddy radio to a mains ground (outlet plug ground) or mains line connection (outlet plug ―hot‖ terminal—110Volts) or the mains neutral terminal.
It is difficult to extend warranties on a kit that is designed to be assembled by the user. Therefore, neither Tablerock Instruments, nor any principal or agent of that company has elected to provide any written or implied warranty, either "limited" or "full", rather than to attempt to comply with the provisions of various state and federal laws and regulations.