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GNS 430 Volume

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slipstream(at)wavecable.c
Guest

Posted: Thu Oct 28, 2010 9:39 am Post subject: GNS 430 Volume

After installing a used GNS-430 in my RV-7 project, I'm 

noticing that the volume knob doesn't seem to be working 

-- The output is only at one level, and can only be 

altered by the headset's own volume control. I doubt it'll 

be loud enough for flight, even with the headset turned up 

all the way. I've tried it through the intercom 

(Sigtronics), and also without.



The audio Hi output is connected to the intercom (or 

directly to headset jack, during my trouble-shooting), and 

the audio Lo is grounded at the firewall.



Any thoughts?



Brooks Wolfe

RV-7 details details details...

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douglas.dodson(at)pobox.c
Guest

Posted: Thu Oct 28, 2010 11:38 am Post subject: GNS 430 Volume

This may not be your problem, but the actual volume lags the movement of the

knob on the Gx30 products.  It really annoys me, but hey what can you bu

develop a workaround.  The knob must be moved and left alone for a second or

two of actual reception before moving it again.  If you have the knob full

up and have left it there, then that issue is not your problem.



It could be a bad impedance mismatch between the 430 and your intercom

and/or headset.  Also, try grounding the audio lo to the 430 or intercom

rather than ships ground.



Doug Dodson

Glasair II-S FT

Flight Test Engineer, CFI-A/S&MEL/I/G

 

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