Need help?Do you have a question about the Kitronik 2157 and is the answer not in the manual?
Instructions for placing eleven resistors on the PCB according to their values and colour bands.
Guidance on soldering ceramic disc capacitors, noting their identification by text and PCB footprints.
Instructions for soldering six electrolytic capacitors, including polarity considerations for C10 and others.
Procedure for soldering the small metal cylinder timing crystal (XTAL1) to the PCB, noting leg fragility.
Guidance on soldering two different potentiometers, ensuring correct orientation and placement.
Instructions for soldering the antenna wire to the PCB, discussing optimal length for performance.
Steps for connecting the PP3 battery clip wires to the PCB's power connector.
Instructions for connecting speaker wires to the PCB and the speaker terminals.
Procedure for incorporating an on/off switch by modifying battery clip connections.
Details on enclosure dimensions and PCB mounting methods using spacers and bolts.
Enhancing tuning precision by attaching a large dial to the potentiometer for easier station selection.
Improving tuning accuracy with a pulley system to provide mechanical gearing for the potentiometer.
Explanation of the Si4820/24-A10 chip's role in receiving and decoding FM signals.
Further explanation of the NCP2890-D IC's differential configuration for audio amplification.
To Next Page
General