diff --git a/widgets/mainwindow.cpp b/widgets/mainwindow.cpp
index 4b9250938..f0193749c 100644
--- a/widgets/mainwindow.cpp
+++ b/widgets/mainwindow.cpp
@@ -8571,7 +8571,8 @@ void MainWindow::setXIT(int n, Frequency base)
 void MainWindow::setFreq4(int rxFreq, int txFreq)
 {
   if (m_mode=="ECHO") return; // we do not adjust rx/tx for echo mode -- always 1500Hz
-  if (ui->RxFreqSpinBox->isEnabled ()) ui->RxFreqSpinBox->setValue(rxFreq);
+  if (ui->RxFreqSpinBox->isEnabled () && !(SpecOp::HOUND==m_specOp && m_config.superFox() &&
+      (rxFreq < 700 or rxFreq > 800))) ui->RxFreqSpinBox->setValue(rxFreq);
   if(m_mode=="WSPR" or m_mode=="FST4W") {
     ui->WSPRfreqSpinBox->setValue(txFreq);
   } else {