Model: IC-R7000 Bulletin: B1903 Subject: Increase the number of memory channels to 200 1. Cut foil trace to IC-8 pin 19 on the logic board to remove it from ground. 2. Add a 47K resistor and between pin 19 and pin 24 of IC-8. 3. Add a SPST switch from pin IC-8 pin 19 to ground. Operation 1. With the new switch closed access to memory channel 0 to 99 is possible. 2. With the new switch open access to memory channels 100 to 199 is possible. Note: It is not possible to scan between the two banks of memory.