landing gear annunciator

[DaveB]

I have a 65 super 21 and would like to have the plane remind me of the gear up rather than make a squeal sound....any recommendations   any brand annunciator better than another  Thanks  DaveB

[kortopates]

The best solution IMO is the http://www.p2inc.com/audioadvisory.asp not cheap but really works well.  

[RobertGary1]

I have the EI AV 17. Not too expensive and works well. You also get low voltage for free. I have it set to listen for EDM alarms, low vacuum, and stall as well.

https://www.aircraftspruce.com/catalog/avpages/av17voiceannunciator.php?clickkey=5403289

-Robert

[Vance Harral]

Another vote for the AV-17 - we've had one for years and really like it.  Note that you'll need an AVI-1 inverter to connect it to the existing gear warning circuitry: http://www.chiefaircraft.com/ei-avi-1.html.  Same if you have ram air and want to connect it to the generic "3 chime" warning.  You can wire directly to the stall warning without an inverter.  And of course, you can wire directly to the warning line of an EI engine monitor.

[RobertGary1]

22 minutes ago, Vance Harral said:

Another vote for the AV-17 - we've had one for years and really like it.  Note that you'll need an AVI-1 inverter to connect it to the existing gear warning circuitry: http://www.chiefaircraft.com/ei-avi-1.html.  Same if you have ram air and want to connect it to the generic "3 chime" warning.  You can wire directly to the stall warning without an inverter.  And of course, you can wire directly to the warning line of an EI engine monitor.

I wired my gear to the gear sonalert so I didn't need the inverter. I think I only needed the inverter for the EDM interface.

-Robert

[Vance Harral]

11 minutes ago, RobertGary1 said:

I wired my gear to the gear sonalert.

Me too.  But in my airplane the gear warning sonalert has one terminal permanently tied to ground, and the other terminal switches from N/C to +12V when the logic detects a gear warning event.  Hence the need for the inverter.  I just double-checked the schematics on this, and it's definitely the way the gear sonalert in M20F S/Ns 22-1306 and later are supposed to be wired.  It's certainly possible other models or S/Ns are wired differently.

The hookup at the stall warning sonalert doesn't need the inverter, because that one has one terminal permanently wired to +12V, and the other terminal switches from N/C to ground when the stall vane switch closes.  Any chance you're confusing the way the gear vs. stall warning sonalerts connect to the AV-17?

Edited September 10, 2018 by Vance Harral

[RobertGary1]

1 minute ago, Vance Harral said:

Me too.  But in my airplane the gear warning sonalert has one terminal permanently tied to ground, and the other terminal switches from N/C to +12V when the logic detects a gear warning event.  Hence the need for the inverter.  I just double-checked the schematics on this, and it's definitely the way the gear sonalert in M20F S/Ns 22-1306 and later are supposed to be wired.  It's certainly possible other models or S/Ns are wired differently.

Ok. Its also possible my memory has faded over the last 20 years.

-Robert

[DaveB]

Thanks for all the info Mooney guys....DaveB