McPhee Aviation

Microsmart Aviation Microphones

Flexible boom microphones for sailplanes 1900 units sold world-wide

Look at these features not seen on other microphones in gliding:

Boom strengthened at base - a layer of polyurethane sealant is applied to the base of the flexible boom and is covered with five tapered lengths of heat shrink. The result is a boom which is flexible at the end much much firmer at the base, which makes the unit much less prone to failure - most gliding microphone booms fail at the base.

A longer 45 cm boom. The Icom boom is usually too short for sailplane applications at only 30cm, and the more recent Dittel/Becker units are now 40cm. However, the Mikrosmart is standard at 45cm, and a 50cm version is now available for those installations that need a slightly longer boom.
 

An extra foam muff
In addition to a small foam muff incorporated in the mic cap cover there is an aviation headset foam muff (windsock) over the end of the microphone held in place with O rings. This can easily be replaced when it eventually fails. The dual foam muffs really work well when vent window is open.

Quality Electret mic insert. Over 99% of microphones used today are Electret. While some hi-fi buffs consider dynamic microphones (as the Germans use) to offer superior quality reproduction, they are a mechanical device and as such will eventually fail, especially in the harsh conditions in which gliders often operate. The Electret has no moving parts and consequently an excellent service record. While the Mikrosmart boom mic works well with the Microair 760 transceiver, it usually needs a small preamp with most US and German radios. This needs to connect to the standard (carbon) microphone connection.

Base interchangeable with Dittel booms. The base bracket has 22mm hole centres which, with a pre-amp unit, can replace standard German boom microphones.

Features include:
Reinforced base - extra strength where all the others fail
Quality Italian boom which is built to last 
Dual foam muffs which help when vent is open 
Useful 45cm (11mm dia) boom 
Electret omni-directional mic insert.

Specifications: 1K ohm impedance - 60db sensitivity, 20Hz -10kHz freq range 
Compatible with Microair X-com and Icom handhelds Pre amp needed with most other radios (ask)
Ideal for use in trucks and mini buses for mobile phone/2way installations

Demonstration Units Available

Unit is guaranteed for 3 years. Replacement muffs and other parts available. Prices Microphone $A93.50 (Export $A85 + del to Eur $A19 extra) Preamp $A38.50 (Export $35)  Dynamic Boom mic for german radios replacement $A104.50 Dynamic Amplified Boom mic as alternate to electret/amp combo and amp is in head of microphone $A143  Prices in Australian dollars

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