diff --git a/apps/cgs/models.py b/apps/cgs/models.py
index 76f547e..a615c60 100644
--- a/apps/cgs/models.py
+++ b/apps/cgs/models.py
@@ -11,13 +11,11 @@ class CGSConfiguration(models.Model):
 
     device = models.ForeignKey(Device)
     exp    = models.ForeignKey(Experiment, default = None)
-    freq0 = models.FloatField(verbose_name='Frequency 0',validators=[MinValueValidator(62.5e6), MaxValueValidator(450e6)])  
-    freq1 = models.FloatField(verbose_name='Frequency 1',validators=[MinValueValidator(62.5e6), MaxValueValidator(450e6)])  
+    freq0 = models.FloatField(verbose_name='Frequency 0',validators=[MinValueValidator(62.5e6), MaxValueValidator(450e6)])
+    freq1 = models.FloatField(verbose_name='Frequency 1',validators=[MinValueValidator(62.5e6), MaxValueValidator(450e6)])
     freq2 = models.FloatField(verbose_name='Frequency 2',validators=[MinValueValidator(62.5e6), MaxValueValidator(450e6)])
-    freq3 = models.PositiveIntegerField(verbose_name='Frequency 3',validators=[MinValueValidator(62.5e6), MaxValueValidator(450e6)])  
+    freq3 = models.PositiveIntegerField(verbose_name='Frequency 3',validators=[MinValueValidator(62.5e6), MaxValueValidator(450e6)])
     freqs = JSONField(default={"frequencies":[{"f0":freq0,"f1":freq1,"f2":freq2,"f3":freq3}]}, blank=True)
     #clk_in = models.PositiveIntegerField(default=10e6)
     #mult = models.PositiveIntegerField(default=40)
     #div = models.PositiveIntegerField(default=1)
-
-
diff --git a/radarsys/settings.py b/radarsys/settings.py
index deff707..5b0949e 100644
--- a/radarsys/settings.py
+++ b/radarsys/settings.py
@@ -44,6 +44,7 @@ INSTALLED_APPS = (
     'apps.cgs',
     'apps.acq',
     'apps.abs',
+    'json_field'
 )
 
 MIDDLEWARE_CLASSES = (
@@ -112,10 +113,10 @@ STATIC_ROOT =  '/var/www/html/static/'
 
 STATICFILES_DIRS = (
     os.path.join(BASE_DIR, 'apps', 'main', 'static'),
-    
+
 )
 
-STATICFILES_FINDERS = ( 
+STATICFILES_FINDERS = (
     'django.contrib.staticfiles.finders.FileSystemFinder',
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
 )
diff --git a/requirements.txt b/requirements.txt
index 9790f1b..2ffec5e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 Django==1.8.6
 django-bootstrap3==6.2.2
 MySQL-python==1.2.5
+django-json-field==0.5.7