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Clive BlackledgeandBen Meadors
eaba8b95be
On the W12 (schematic W12-MB-V0.2, July 2026) the sub-GHz GC1109 was never turned on, so every packet left through a shut-down, unpowered front end about 50 dB below the board's working output. - Its LDO is enabled by IO4 (PA_EN_M), whose pull-up is not fitted: drive it as LR2021_POWER_EN. - Its CTX/CPS/CSD pins are LR2021 DIO9/10/11, not hardwired: add an RF-switch table (LR2021_DIO_AS_RF_SWITCH, rfswitch.h). - Hold IO3 (PA_EN_G, 2.4 GHz front end) low instead of floating. - Add the GC1109 TX gain curve (same front end as the Heltec V4.2), so the working PA stays within the configured and regional power. - Correct the comments that called the enables pulled high, swapped IO3/IO4, and said RF switching was hardwired. Co-authored-by: Ben Meadors <benmmeadors@gmail.com>