diff --git a/charon_vna/gui.py b/charon_vna/gui.py
index a095b99..48bbbb3 100644
--- a/charon_vna/gui.py
+++ b/charon_vna/gui.py
@@ -1,20 +1,31 @@
 import sys
+from pathlib import Path
 
 import matplotlib as mpl
+import numpy as np
 from gui_helpers import FlowLayout
 from matplotlib import pyplot as plt
 from matplotlib.backends.backend_qtagg import FigureCanvasQTAgg
 from matplotlib.ticker import EngFormatter
 from PySide6.QtCore import QSize, Qt
+from PySide6.QtGui import QAction, QKeySequence, QShortcut
 from PySide6.QtWidgets import (
     QApplication,
     QMainWindow,
+    QMenu,
+    QMenuBar,
     QPushButton,
+    QToolBar,
     QVBoxLayout,
     QWidget,
 )
 from skrf import plotting as rf_plt
 
+DEFAULT_CONFIG = dict(
+    frequency=np.arange(1e9, 2e9, 11),  # Hz
+    power=-5,  # dB
+)
+
 
 class PlotWidget(QWidget):
     def __init__(self):
@@ -31,6 +42,10 @@ class PlotWidget(QWidget):
         canvas = FigureCanvasQTAgg(self.fig)
         layout.addWidget(canvas)
 
+        # toolbar = QToolBar("Toolbar")
+        # toolbar.addAction("blah")
+        # self.addToolBar(toolbar)
+
     def setup_rect(self):
         self.ax.grid(True)
         self.ax.xaxis.set_major_formatter(EngFormatter())
@@ -54,38 +69,71 @@ class PlotWidget(QWidget):
 
 # Subclass QMainWindow to customize your application's main window
 class MainWindow(QMainWindow):
+    config_path: Path | None
+
     def __init__(self):
         super().__init__()
 
+        self.config_path = None
+
         mpl.use("QtAgg")
 
         self.setWindowTitle("Charon VNA")
 
-        config_column = QVBoxLayout()
+        # Menu
+        menubar = self.menuBar()
 
-        # save/restore device settings
-        btn_load_config = QPushButton("Load Configuration")
-        btn_save_config = QPushButton("Save Configuration")
-        # TODO: implement load/save config
-        btn_load_config.setEnabled(False)
-        btn_save_config.setEnabled(False)
-        config_column.addWidget(btn_load_config)
-        config_column.addWidget(btn_save_config)
+        menu_file = QMenu("&File")
+        menubar.addMenu(menu_file)
+        action_load_config = QAction("&Open Configuration", self)
+        menu_file.addAction(action_load_config)
+        action_load_config.triggered.connect(self.load_config)
+        QShortcut(QKeySequence("Ctrl+O"), self).activated.connect(self.load_config)
+        action_save_config = QAction("&Save Configuration", self)
+        menu_file.addAction(action_save_config)
+        action_save_config.triggered.connect(self.save_config)
+        QShortcut(QKeySequence("Ctrl+S"), self).activated.connect(self.save_config)
+        action_saveas_config = QAction("Save Configuration &As", self)
+        menu_file.addAction(action_saveas_config)
+        action_saveas_config.triggered.connect(self.saveas_config)
+        QShortcut(QKeySequence("Ctrl+Shift+S"), self).activated.connect(self.saveas_config)
 
-        plot_layout = FlowLayout()
+        menu_stimulus = QMenu("&Stimulus")
+        menubar.addMenu(menu_stimulus)
+
+        menu_calibration = QMenu("&Calibration")
+        menubar.addMenu(menu_calibration)
+
+        # Content
+        plot_layout = QVBoxLayout()
         # TODO: handle plots properly
-        for i in range(10):
+        for i in range(1):
             plot0 = PlotWidget()
             plot_layout.addWidget(plot0)
-        plot_flow_widget = QWidget()
-        plot_flow_widget.setLayout(plot_layout)
-        config_column.addWidget(plot_flow_widget)
 
         # Set the central widget of the Window.
         widget = QWidget()
-        widget.setLayout(config_column)
+        widget.setLayout(plot_layout)
         self.setCentralWidget(widget)
 
+    def saveas_config(self):
+        print("Prompting for save path...")
+        # TODO: prompt for config path
+        self.config_path = Path(__file__).parent / "config.json"
+        print(f"Config path is now {self.config_path.resolve()}")
+        self.save_config()
+
+    def save_config(self):
+        if self.config_path is None:
+            self.saveas_config()
+        else:
+            print(f"saving config to {self.config_path.resolve()}")
+            # TODO: save config
+
+    def load_config(self):
+        print("loading config")
+        # TODO: load config
+
 
 app = QApplication(sys.argv)