A very small and handy little meter intended for adjustment and
alignment of Digital terrestrial antennas !
It is extremely easy to use and got no buttons or knobs.

Instructions:

• Connect the AIRBEEPER between the DVB-T receiver and the
  terrestrial antenna.
• Turn the DVB-T receiver On and make sure that it supplies a 5v output
  (if not, see below).
• If connected and working correct a pitch-tone will be heard in the
  enclosed headphone.
• Listen to the pitch-tone and align the antenna towards the DVB-T
  transmitter.
• The tone changes and gets higher as the signal gets stronger.
• Tighten the antenna at the spot where the highest tone can be heard.

Power supply of the unit:

• The AIRBEEPER is normally power-supplied by the DVB-T receiver.
  Most DVB-T receivers have a 5v default output (turned On).
• In some cases the 5v output must be turned On at special place in the
  DVB-T receiver menu-system. See Owners Manual of the DVB-T.
• A few DVB-T receivers do not provide a 5v output at all. For such
  cases use the enclosed battery-cable for feeding the AIRBEEPER with
  power. A standard 9volt battery must be used (not incl. with the meter).