background image

CB-1 

 2 

 
 
 
 
RAMSEY TRANSMITTER KITS 
       · FM100 Professional FM Stereo Transmitter 
       · FM25 Synthesized Stereo Transmitter 
       ·

AM1, AM25 AM Transmitters 

       · TV6 Television Transmitter 
 
RAMSEY RECEIVER KITS 
       · FR1 FM Broadcast Receiver 
       · AR1 Aircraft Band Receiver 
       · SR2 Shortwave Receiver 
       · AA7 Active Antenna 
       · SC1 Shortwave Converter 
 
RAMSEY HOBBY KITS 
       · SG7 Personal Speed Radar 
       · SS70A Speech Scrambler 
       · ECG1 Heart Monitor 
       · WCT20 Wizard Cable Tracer 
       · PG13 Plasma Generator 
       · LABC1 Lead Acid Battery Charger 
 
RAMSEY AMATEUR RADIO KITS 
       · FX146 VHF Transceivers 
       · HR Series HF All Mode Receivers 
       · QRP Series HF CW Transmitters 
       · CW700 Micro Memory CW Keyer 
       · CPO3 Code Practice Oscillator 
       · Packet Computer Interfaces 
       · QRP Power Amplifiers 
 
RAMSEY MINI-KITS 
Many other kits are available for hobby, school, Scouts and just plain FUN. 
New kits are always under development. Write or call for our free Ramsey 
catalog.    

 
 

CB-1 CHATTERBOX KIT INSTRUCTION MANUAL

 

Ramsey Electronics publication No. MCB-1 Revision 2.1a 

First printing: April 1994

 

 

 
COPYRIGHT  1994 by Ramsey Electronics, Inc. 793 Canning Parkway, Victor, New York 
14564. All rights reserved. No portion of this publication may be copied or duplicated without the 
written permission of Ramsey Electronics, Inc. Printed in the United States of America.

 

Содержание CB1 CHATTERBOX

Страница 1: ...ed for longer record and playback times Loud 2 Watt audio output Very clean low noise DAST storage technology provides excellent audio quality Seven modes of operation available Even interfaces to rad...

Страница 2: ...R Series HF All Mode Receivers QRP Series HF CW Transmitters CW700 Micro Memory CW Keyer CPO3 Code Practice Oscillator Packet Computer Interfaces QRP Power Amplifiers RAMSEY MINI KITS Many other kits...

Страница 3: ...Parts list 7 CB 1 Assembly instructions 8 Initial testing 17 Troubleshooting 18 Using the CB 1 19 Microphone considerations 20 Parts Layout diagram 21 Schematic diagram 22 KIT ASSEMBLY AND INSTRUCTIO...

Страница 4: ...imply using your radio a lot This kit can take care of the tiresome tasks such as saying Over and out a call sign CQ your QTH or whatever Not only is this kit useful for repeating messages but it is v...

Страница 5: ...an the switches for mode play and address PA3 chip selects the voice recorder and through the pulse shaping circuit of Q7 resets the ISD1020 IC chip The SP output of the ISD1020 is taken through volum...

Страница 6: ...board for any possible solder shorts or cold solder joints All of these mistakes could have detrimental effects on your kit not to mention your ego Kit building tips Use a good soldering technique let...

Страница 7: ...2 220uF electrolytic C3 15 RESISTORS r 1 2 ohm resistor red black gold R13 r 2 75 ohm resistor violet green black R2 3 r 5 1K ohm resistor brown black red R4 5 8 24 25 r 3 2 2K ohm resistor red red r...

Страница 8: ...three pins r 2 Install voltage regulator VR1 7805 Observe correct placement of the metal tab Mount it so the lettering on the case is facing the edge of the board The 7805 provides a stable source of...

Страница 9: ...side of the board to verify that all 28 pins are sticking through the board before soldering After you check that all 28 pins are properly in place solder all pins Be very careful in soldering since s...

Страница 10: ...solder bridges when finished soldering This is where the microcontroller chip the IC with the sticker on top or marked XC705K1P is to be inserted Insert U3 into the socket being careful of bent under...

Страница 11: ...1 2N3904 transistor Watch the positioning of the flat side r 42 Install Q2 2N3904 transistor watching the positioning of the flat side Transistors Q1 and Q2 are used to key an external radio r 43 Inst...

Страница 12: ...orrect installation r 55 Install C7 10uF electrolytic capacitor Pay attention to polarity This is a DC blocking capacitor for the audio out of the ISD chip r 56 Install U2 LM380 audio amplifier IC Obs...

Страница 13: ...1 use the same care that you used for installing DS2 r 70 Install R2 75 ohm resistor violet green black This is another current limiting resistor r 71 Install S2 one of the mini push button switches I...

Страница 14: ...two joints check again to make sure the boards are square If all checks OK continue on to the rest of the solder pads checking for solder bridges as you go The more area that is connected with solder...

Страница 15: ...te or other color wire from the pin on the potentiometer labeled SW B to the hole on the main board near VR1 labeled SW B Solder the wire in place r 86 Connect a 5 piece of black wire from the pin on...

Страница 16: ...oldered in the correct places r 2 Make sure the power switch is turned off Plug in the 12VDC supply to J4 Make sure the center pin is the positive terminal and the outside of the jack is ground or neg...

Страница 17: ...ibed go to the trouble shooting section of the manual to determine how to resolve the problem TROUBLESHOOTING TIPS PROBLEM Neither display lights when powered up and there is no sound SOLUTION Use a m...

Страница 18: ...mike but allows audio to pass PROBLEM One or more switches won t work but everything else is OK SOLUTION Check the junction between your main board and the display board Many problems can arise here U...

Страница 19: ...CB 1 19...

Страница 20: ...you must understand the pins of the DIN connector on the rear of the unit 5 Pin DIN Jack Connections Pin 1 Audio output to radio mic in Pin 2 Ground Pin 3 Push to talk open collector Pin 4 Radio speak...

Страница 21: ...CB 1 21 CB 1 PARTS LAYOUT DIAGRAM...

Страница 22: ...be assured that the 1K ohm resistors are actually the missing 10 K parts Hum m m I guess the red band really does look orange Ramsey Electronics project kits are packed with pride in the USA If you b...

Страница 23: ...CB 1 Assembly and Instruction manual for RAMSEY MODEL NO CB 1 RAMSEY ELECTRONICS INC 793 Canning Parkway Victor New York 14564 Phone 716 924 4560 Fax 716 924 4555 REQUIRED TOOLS Soldering Iron Radio S...

Отзывы: