MicroAvionics UL-300 User Manual

Part No. MM001AA
UL-300
ANR & VOX,
ULM Headset
USER
MANUAL
www.microavionics.com
V1.0
UL-300 with ANR & VOX
Thank you for buying the UL-300 headset. Used correctly you will have many years of clear communication. Please
read this manual in full before use.
This headset has been specifically designed to work in open and enclosed cockpits with specific attention to noise
reduction and clear communication. The headsets are compatible with our UL100 & UL200 headsets, and Lynx
Avionics Micro system.
The headset is fitted with ANR (active noise reduction) and VOX. ANR listens to the noise penetrating the ear cup
and cancels this noise out using phase reversal technology. The result is an extremely quiet ear defender, even
under the harshest environment. The ANR technology reduces this noise by 6dB, which is twice as quiet compared
to non ANR.
The UL-300 also has VOX. VOX is a system where the microphone is switched off when you are not speaking. This
in turn switches off the speakers in the ear cups to give an exceptionally quiet headset. The VOX level is user
adjusted by a small control on the headset
The UL-300 is a first of its kind for microlight aircraft. The result from VOX & ANR means you have a very quiet
headset.
Instructions:

Charging:

The headsets have only a small charge from new. You should connect the headsets to our plug in wall charger, or
connect to our powered radio interface. If using the wall charger you should leave on charge for 18 hours for the
first charge. Do not charge for longer as this will shorten the life of the batteries. The headset has Nigh batteries.
Nigh batteries do not have a memory effect like Ni Cad batteries. This means you can charge the headset even if
they are not flat. A charge of 12-14 hours is recommended from flat batteries.
If charging via the interface then connect two headsets and when the charge light appear on the interface you can
disconnect the headsets.

Connecting:

Solo: For non-radio use. When flying solo you can connect the headset to a switching adapter- our part No.
MM003. This enables the user to monitor background noise from the engine.
Dual linking: For none radio use. When flying dual you can connect two headsets via the linking adapter- our part
No. MM004. This gives you a portable intercom that can be carried between aircraft.
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