From 53a0238aef867868cb99f447e53a0fe2f2c0528f Mon Sep 17 00:00:00 2001 From: sh123 Date: Mon, 31 May 2021 11:55:57 +0300 Subject: [PATCH] Update README.md --- README.md | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index 182eb1f..5cab1f7 100644 --- a/README.md +++ b/README.md @@ -173,8 +173,10 @@ Payloads for commands are sent and expected as big endian and defined as: # Using External UHF Amplifier ![alt text](images/amp.png) -It is possible to get 30-40% coverage increase in urban environment by using additional external 1-2W amplifier (about 6$ on Aliexpress), which will give 10-12 dB signal increase. -- Implement simple amplifier power switching by using relay + +It is possible to get 30-40% coverage increase in urban environment by using additional external 1-2W amplifier (about 6$ on Aliexpress), which will give 10-12 dB signal increase + +- Implement simple amplifier power switching by using relay, do NOT keep this amplifier always ON - Set LoRa output power to around 8 dBm `cfg.LoraPwr = 8;`, NB! higher than 10 dBm levels can destroy amplifier - Set `cfg.PttEnable` to `true` - Set `cfg.PttPin` to your relay control pin