I have installed the Garmin GTR 225 A to meet the 8.33 Khz mandate from 2018 in my RV8. The problem is that because I replaced the SL40 which was smaller in vertical dimension I had to do away with my intercom, and use the built in intercom of the Garmin Radio (yes I wish have purchased a trig or icom that fit the old sl-40 slot, but was not available when I purchased the GTR225). Now the problem is that setting the squelch to even 100 breaks the squelch when airborne. This leave both pilot and passenger with constant and loud background noise so the intercom has to be disabled (I hard wired a switch to disable it). Yes the RV cabins are noisy but with my intercom before I could find a setting where it would not break squelch and it was still possible for the intercom to pickup voice to communicate with passenger. Now with the built in garmin intercom it?s impossible to have the intercom activated. The com part works fine. Its only intercom that?s the issue. I use a zulu 2 headset btw.
What can be adjusted so the intercom does not pickup the cockpit background noice enough to open squelch all the time, when its already adjusted to 100 (which means it also cut off a lot of the voice even when speaking loud)? Is the built in Garmin intercom really that poor or was something not setup properly? I also requested the latest software update from the store where I bought the radio to rule out software issues, but so far only received an older software update which made no difference. I came across this
http://garmin.blogs.com/aviationalerts/2015/05/service-bulletin-1525b-gtr-225gnc-255-software-upgrade-to-display-software-version-211-and-com-softw.html
which looks like Garmin did some software updates on the intercom.
Im about to do some longer trips with my 7 year old daughter, but without intercom to communicate airborne I would not go ahead. Input/help appreciated.
What can be adjusted so the intercom does not pickup the cockpit background noice enough to open squelch all the time, when its already adjusted to 100 (which means it also cut off a lot of the voice even when speaking loud)? Is the built in Garmin intercom really that poor or was something not setup properly? I also requested the latest software update from the store where I bought the radio to rule out software issues, but so far only received an older software update which made no difference. I came across this
http://garmin.blogs.com/aviationalerts/2015/05/service-bulletin-1525b-gtr-225gnc-255-software-upgrade-to-display-software-version-211-and-com-softw.html
which looks like Garmin did some software updates on the intercom.
Im about to do some longer trips with my 7 year old daughter, but without intercom to communicate airborne I would not go ahead. Input/help appreciated.