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Garmin GTN650. RF squelch
- Thread starter tclaire
- Start date
tfarrell839
Active Member
Re: RF Squelch on GTN 650 750
Tim,
Let me explain by example: Imagine you are miles out from your destination airport and want to pick up the ATIS, you tune that in and you don't hear anything, but you push the squelch button and now you can hear the broadcast, faintly but broken. If you decrease your RF squelch, you increase the sensitivity level to "break" squelch, so you will hear the broadcast from further away, but the quality might not be ideal. If you increase the RF squelch, the COM requires a stronger signal to break squelch, so you will need to be closer to the broadcast point. Too little RF squelch could mean that you pick up things that you don't necessarily want to hear, like a distant airport that is using the same Unicom as the airport you are flying into.
Hope that helps.
Tim
Tim,
Let me explain by example: Imagine you are miles out from your destination airport and want to pick up the ATIS, you tune that in and you don't hear anything, but you push the squelch button and now you can hear the broadcast, faintly but broken. If you decrease your RF squelch, you increase the sensitivity level to "break" squelch, so you will hear the broadcast from further away, but the quality might not be ideal. If you increase the RF squelch, the COM requires a stronger signal to break squelch, so you will need to be closer to the broadcast point. Too little RF squelch could mean that you pick up things that you don't necessarily want to hear, like a distant airport that is using the same Unicom as the airport you are flying into.
Hope that helps.
Tim
Tim,
I wonder why you are asking this question.
I just installed my GTN650 and during initial flights I had the RX break squelch at random times. Very annoying. I went into setup and moved it from 0 to about 68. This stopped the nuisance squelch breaks. Seems the factory setting is very low. I have not had a chance to do a good job of checking yet as I may now have it too high but I have not missed a local radio call yet.
I also had to move the sidetone volume way down.
I wonder why you are asking this question.
I just installed my GTN650 and during initial flights I had the RX break squelch at random times. Very annoying. I went into setup and moved it from 0 to about 68. This stopped the nuisance squelch breaks. Seems the factory setting is very low. I have not had a chance to do a good job of checking yet as I may now have it too high but I have not missed a local radio call yet.
I also had to move the sidetone volume way down.
Gt
I was not sure what it adjusted for sure but had a idea. Mine was set up at 80%
Flying over west texas wanted to make sure did not miss anything with atc
I now have it set to 40%
Tim
I was not sure what it adjusted for sure but had a idea. Mine was set up at 80%
Flying over west texas wanted to make sure did not miss anything with atc
I now have it set to 40%
Tim
captainrichhill
Member
Frustrated
Where do I find the squelch adjustment? I have a GTN650 that has the same issue but can't find anything in the manual other then turning the squelch off by pushing the volume knob in.
Where do I find the squelch adjustment? I have a GTN650 that has the same issue but can't find anything in the manual other then turning the squelch off by pushing the volume knob in.
