From 95711c3749e2f202f70a2e5c5952c7c62489a1ce Mon Sep 17 00:00:00 2001
From: Adam Wisher <37659188+mrwish7@users.noreply.github.com>
Date: Mon, 9 Dec 2024 10:39:36 +0000
Subject: [PATCH] Adjust tx_search weighting

Add adjustment to fix slight overweighting of short-range low power transmitters
---
 server/tx_search.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/tx_search.js b/server/tx_search.js
index ca3c580..7aad1e4 100644
--- a/server/tx_search.js
+++ b/server/tx_search.js
@@ -108,7 +108,8 @@ async function processData(data, piCode, rdsPs) {
             weightDistance = Math.abs(distance.distanceKm - 1500);
         }
         let erp = station.erp && station.erp > 0 ? station.erp : 1;
-        const score = (10 * Math.log10(erp * 1000)) / weightDistance;
+        let extraWeight = erp >= 5 && distance.distanceKm <= 2500 ? 0.5 : 0;
+        const score = ((10 * Math.log10(erp * 1000)) / weightDistance) + extraWeight;
         if (score > maxScore) {
             maxScore = score;
             txAzimuth = distance.azimuth;