update post about rtl_sdr fm radio

content/posts/2023-06-04-old-school-radio-with-rtl-sdr/index.md

@@ -3,9 +3,9 @@
 title = 'Listen to VHF/UHF radio with an RTL-SDR stick'
 summary = '''Listen to old-school radio on the command line with `rtl_sdr`.'''
 date = '2023-06-04T10:33:11+02:00'
-# lastmod = ''
+lastmod = '2023-07-30T07:08:16+0000'
 categories = [ 'amateur-radio', 'computerstuff' ]
-tags = [ 'linux', 'freebsd' ]
+tags = [ 'linux', 'freebsd', 'sdr' ]
 
 +++