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Webpage updated Oct,22,2025
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New to the website: AI Site Chat
uPD858 - Power supply
uPD858 - Add tone control
uPD858 - Sensitivity enhancing
uPD858 - 10 Khz jump mod
uPD858 - Broad Band Mod
uPD858 - Unlock the clarifier
Understanding the Upd858
Mod-1 Realistic TRC458 CB to 10 meters!
Mod-2 Realistic TRC449 CB to 10 Meters
Realistic TRC-449 Australian version -Yes this is a version i did NOT know about! ------ PDF Document
Realistic TRC-458 Australian version -Yes this is a version i did NOT know about! ------ PDF Document
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