Model: IC-R71 Bulletin: B1801 Subject: Improve the S-meter sensitivity after warm up 1. Replace R114 (470 ohm) with a 680 ohm resistor. 2. Add R207 3.3K resistor from the anode of D70 to the emitter of Q23. 3. Add R208 a 33D28 thermister (ICOM P/N 915-04228) in parallel with R114.