I am working on a old SW radio receiver. Plan is to make it capable to receive CW and SSB. This original RF board includes a Sony make CXA1019S IC that is the heart of this radio. I have plan to add a input preselector, RSSI device, BFO, Digital Frequency display, and completely re-design systems for LO and RF Frontend. This is just a plan. So far I have done the Digital frequency display and the RSSI device. Detailed construction of these 2 will be posted here soon.
Sunday, August 4, 2019
This is my first post,
I am working on a old SW radio receiver. Plan is to make it capable to receive CW and SSB. This original RF board includes a Sony make CXA1019S IC that is the heart of this radio. I have plan to add a input preselector, RSSI device, BFO, Digital Frequency display, and completely re-design systems for LO and RF Frontend. This is just a plan. So far I have done the Digital frequency display and the RSSI device. Detailed construction of these 2 will be posted here soon.
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I have just started to learn CW and realized that a code practice OSCILLATOR is very useful. Using simple 555 astable oscillator was ini... -
The RSSI device is built around the famous LED bargraph driver IC LM3914. The radio IC CXA1019S when run from 3V supply generates a variabl...
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