From 9fda31497d92591a1e2c240b7a8d139ea85e76c9 Mon Sep 17 00:00:00 2001 From: Mikael Nousiainen Date: Tue, 8 Aug 2023 18:26:57 +0300 Subject: [PATCH] Reduce default transmit power for Si4032 for Horus 4FSK usage and add comments --- src/config.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/config.h b/src/config.h index e6b31c5..339a7ad 100644 --- a/src/config.h +++ b/src/config.h @@ -99,8 +99,10 @@ */ // Si4032 transmit power: 0..7 -// 0 = -1dBm, 1 = 2dBm, 2 = 5dBm, 3 = 8dBm, 4 = 11dBm, 5 = 14dBm, 6 = 17dBm, 7 = 20dBm -#define RADIO_SI4032_TX_POWER 7 +// 0 = -1dBm, 1 = 2dBm, 2 = 5dBm (~3 mW), 3 = 8dBm (~6 mW), 4 = 11dBm (~12 mW), 5 = 14dBm (25 mW), 6 = 17dBm (50 mW), 7 = 20dBm (100 mW) +// This defaults to 5 (14 dBm, 25 mW), which is a good setting for Horus 4FSK transmissions and it saves power. +// For APRS usage, you might want to use maximum power setting of 7 (20 dBm, 100 mW). Note that this setting reduces battery life. +#define RADIO_SI4032_TX_POWER 5 // Which modes to transmit using the built-in Si4032 transmitter chip #define RADIO_SI4032_TX_CW false