From da949a287e51428a15c977cff70017fc3dd41d0a Mon Sep 17 00:00:00 2001
From: Alan Johnston <alan.b.johnston@gmail.com>
Date: Wed, 22 Jul 2026 12:41:36 -0400
Subject: [PATCH] Update transmit.py check for tx freq 3rd harmonic rx

---
 transmit.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/transmit.py b/transmit.py
index ef0c00c4..7bba93b5 100644
--- a/transmit.py
+++ b/transmit.py
@@ -714,6 +714,7 @@ if __name__ == "__main__":
 		if len(config) > 6:
 			txf = float(config[6])
 			tx = "{:.4f}".format(txf)
+			txrf = 0
 			if (mode == 'e'):
 				if (txf > 420.0) and (txf < 450.0):
 					txrf = (txf - 290.0) # - 0.1 # Cross Band Repeater mode transmit frequency in 2m band
@@ -731,6 +732,16 @@ if __name__ == "__main__":
 			rxf = float(config[7])
 			rx = "{:.4f}".format(rxf)
 			print(rx)
+			if abs(rxf - 3 * txrf) < 10.0: 
+				txrf = txrf + 0.02
+				txr = "{:.4f}".format(txrf)
+				print("Adjusting Repeater TX frequency to avoid 3rd harmonic RX")
+				print("Transmit frequency: ",txr)
+			if abs(rxf - 3 * txf) < 10.0: 
+				txf = txf + 0.02
+				tx = "{:.4f}".format(txf)
+				print("Adjusting TX frequency to avoid 3rd harmonic RX")				
+				print("Transmit frequency: ",tx)			
 		if len(config) > 8:
 			if config[8] == 'y' or config[8] == 'yes':		
 				hab_mode = True