Flarm Audio and Towplanes

On 6/8/2012 10:01 AM, bumper wrote:

Bob,

I did a post on this earlier. I use my PowerFlarm portable in both my
glider and Husky tow plane. I installed a plug-in super bright LED
that attaches to the side of the PF with Velcro. It plugs into the
audio out and the coaxial power jack on the PF, so is easy to remove.
It uses the PF audio out to bias a transistor driver for the alarm
LED - - bright enough to get your attention even in full sunlight.

One can also wire the PF audio out directly to the headset jack in
the aircraft. Even though the PF has menu adjustable audio out
level, depending on audio levels desired, you may need to install a
series dropping resistor of 50 ohms or more to lower the audio to a
reasonable level.

An alternative for towplanes with an intercom (separate box or built
into the radio) is to have the PowerFlarm audio output connect to one of
the intercom inputs. That will bring it to the pilot's headset without
any conflicts.

Some newer radios, like the MGL Avionics V6 I just installed, also have
dedicated audio inputs for warning devices like the PowerFlarm.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

On Friday, June 8, 2012 11:32:59 AM UTC-7, Eric Greenwell wrote:
On 6/8/2012 10:01 AM, bumper wrote:

Bob,

I did a post on this earlier. I use my PowerFlarm portable in both my
glider and Husky tow plane. I installed a plug-in super bright LED
that attaches to the side of the PF with Velcro. It plugs into the
audio out and the coaxial power jack on the PF, so is easy to remove.
It uses the PF audio out to bias a transistor driver for the alarm
LED - - bright enough to get your attention even in full sunlight.

One can also wire the PF audio out directly to the headset jack in
the aircraft. Even though the PF has menu adjustable audio out
level, depending on audio levels desired, you may need to install a
series dropping resistor of 50 ohms or more to lower the audio to a
reasonable level.

An alternative for towplanes with an intercom (separate box or built
into the radio) is to have the PowerFlarm audio output connect to one of
the intercom inputs. That will bring it to the pilot's headset without
any conflicts.

Some newer radios, like the MGL Avionics V6 I just installed, also have
dedicated audio inputs for warning devices like the PowerFlarm.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

Many newer aviation headsets have a direct audio input designed for iPods/MP3 players or cell phones. e.g. The Clarity Alofts I use in the ASH-26E do....

Darryl