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  #1  
Old 01-02-2015, 07:53 AM
daveedtl daveedtl is offline
 
Join Date: Nov 2012
Location: Woodburn, Oregon
Posts: 3
Default PTT Volume

I have a GNC 255A installed in an RV 7 and am using the built in intercom, Lightspeed Zulu II headsets with Vans stick grips and PTT switch and can not hear myself transmit when pressing the PPT button and neither can my passenger. I have no problems being heard from other pilots or ATC. I have talked to both Lightspeed and Garmin and both say there is no way to turn up the volume on the PTT. Any suggestions?

Dave
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  #2  
Old 01-02-2015, 08:16 AM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,687
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Adjust sidetone volume as follows:

6.5 Ground Checks (Configuration Mode)
The following checks are performed in configuration mode. To enter configuration mode, remove power from the GTR/GNC. With the GTR/GNC turned off, press and hold the ENT key and apply power to the GTR/GNC by turning the COM volume knob clockwise. Release the ENT key when the display activates and ?Garmin? appears on the screen.

The first page displayed is the Config Mode page. While in configuration mode, pages can be selected by turning the outer knob to select the high-level page, turning the inner knob to select the subpage, and then
pressing the ENT key to select the desired page. There are five main page headings: SYS, NAV, COM, AUD, and LOG. From the main heading, turn the inner knob to select the desired subpage and then press the ENT key. See Figure 6-1.

6.4.4.1 COM Sidetone
The COM Sidetone page (Figure 6-18) allows the installer to adjust the COM sidetone volume. COM sidetone is the audio spoken into the COM microphone. This setting only affects the volume of the sidetone for the GTR/GNC COM during PTT. To adjust the COM sidetone volume, rotate the smaller inner knob to the desired value. This field is adjustable in the range of 0 (zero) to 100. The default is 50.
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EXP Aircraft Services LLC
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  #3  
Old 01-02-2015, 05:51 PM
daveedtl daveedtl is offline
 
Join Date: Nov 2012
Location: Woodburn, Oregon
Posts: 3
Default PTT Volume

Thanks Walt. I made the sidetone adjustment this morning and it worked great. It is amazing the information you can find in a manual if you take the time to read the darn things.

Dave
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  #4  
Old 01-02-2015, 09:26 PM
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chazking chazking is offline
 
Join Date: Jul 2006
Location: State of Bliss
Posts: 396
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I find reading the manual twice with a day between reads helps me.
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