From cde6762fd31767f6a010cfe21b4ff2fe3b85ead0 Mon Sep 17 00:00:00 2001
From: Brumi-2021 <86470699+Brumi-2021@users.noreply.github.com>
Date: Sat, 10 May 2025 17:52:01 +0200
Subject: [PATCH] Updated NOAA (markdown)

---
 NOAA.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/NOAA.md b/NOAA.md
index d4739a4..28179ef 100644
--- a/NOAA.md
+++ b/NOAA.md
@@ -8,7 +8,7 @@ Currently, they are using those frequencies, (but in future it may change, you n
 
  NOAA are a Polar Operational Environmental Satellites (POES) satellite system,  makes 14 nearly polar orbits per day approximately 520 miles (800 kms)  above Earth. The Earth's rotation allows the satellite to see a different view with each orbit, and each satellite provides two complete views of weather around the world each day.  
 
-The [APT signal](https://www.sigidwiki.com/wiki/Automatic_Picture_Transmission_%28APT%29#Frequencies) is modulated in a AM subarrier of 2400 Hz , and then all this audio map information is broadcasted in FM in the 137 MHz band .The satellite is broadcasting it with a radiated power of 5W at 800 kms, so we may need QFH 137 Mhz antenna band or proper dipole + bandpass amplifier. 
+The [APT signal](https://www.sigidwiki.com/wiki/Automatic_Picture_Transmission_%28APT%29#Frequencies) is modulated in a AM subarrier of 2400 Hz , and then all this audio map information is broadcasted in FM in the 137 MHz band .The satellite is broadcasting it with a radiated power of 5W aprox. at 800 kms, so we may need QFH 137 Mhz antenna band or proper dipole + bandpass amplifier. 
 
 The analogue APT weather map transmission was invented in the 60's 
 ![image](https://github.com/user-attachments/assets/433e3db3-e541-42e4-bd0f-57ed64aed841)