---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 05/16/10: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:12 AM - Ground power contactor diodes (Robert L. Nuckolls, III) 2. 12:46 PM - Building a push to talk circuit (Richard Girard) 3. 03:03 PM - SL30 Comm Failure message (John Brick) 4. 05:12 PM - A 35 amp C/B switch to control a Facet Aux Fuel Pump!!! (FrankC) 5. 05:18 PM - Re: SL30 Comm Failure message (John Schroeder) 6. 06:33 PM - Re: SL30 Comm Failure message (John Brick) 7. 07:30 PM - Re: A 35 amp C/B switch to control a Facet Aux Fuel Pump!!! (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 07:12:10 AM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: Ground power contactor diodes >Comments/Questions: I purchased a pre wired contactor from B&C for >ground power,when I received it I found it had one diode #IN5400 on >the two short post and a wire on one small post to one of the large >post, question is you have two Radio Shack diodes #IN5402 on your >drawing do I need to change the wiring and put the two Radio Shack >diodes on or will it work like it is. Thanks for any information. It will 'work' as received. Adding the second diode offers some protection against the rare instance of reversed polarity from a ground power source. Adding it is your choice. Bob . . . ________________________________ Message 2 _____________________________________ Time: 12:46:33 PM PST US Subject: AeroElectric-List: Building a push to talk circuit From: Richard Girard I bought a Vertex radio and need a push to talk switching circuit for it. I just can't turn down the VOX actuation level enough to deal with a pusher engine almost above my head, and a two stroke one at that. There is one listed in the manual, but there is no part no. listed. As it happens I have all the plugs and sockets to build one. If I understand how this this works I need two switches, one normally open, the other NC. The NO switch connects into the receiver and the NC into the transmitter so that when the button is pushed the receiver is grounded and the transmitter opened. Does anyone on the list have one they've built, a drawing of the circuit, or a web address where info can be found? Thanks, Rick Girard ________________________________ Message 3 _____________________________________ Time: 03:03:01 PM PST US From: "John Brick" Subject: AeroElectric-List: SL30 Comm Failure message After 4 1/2 years without trouble, my Apollo SL30 has begun to show this message briefly on startup. Then it resolves itself and does not reoccur in flight. Garmin bought out Apollo, long ago and has made some upgrades I think. Hope I can avoid sending this unit back to Garmin. Any ideas? jb ________________________________ Message 4 _____________________________________ Time: 05:12:50 PM PST US Subject: AeroElectric-List: A 35 amp C/B switch to control a Facet Aux Fuel Pump!!! From: "FrankC" Heh guys. I'm sort of new at this so give me a little slack. I'm trying to re-wire my aircraft with the proper wiring and changing out my C/Bs using Klixons. Question: In my removal of the old B&P C/Bs I came across one that was a 35-amp B&P C/B switch that was controlling my Facet Aux Fuel Pump. The funny thing is that Facets website says that it requires a max of 1 amp for the pump. I thought this was unusual to me. Any comments on why someone would wire it up with a 35amp C/B switch? Am I wrong in my thinking? Should I be using a much smaller rated C/B switch? Need lots of help. Not real savvy on wiring. Thanks guys. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297930#297930 ________________________________ Message 5 _____________________________________ Time: 05:18:44 PM PST US Subject: Re: AeroElectric-List: SL30 Comm Failure message From: "John Schroeder" John Does it have an internal battery? The 480 does and it gives out some messages when it starts to go bad. Call the Garmin AT tech support people and ask them. They are great folks - like Apollo/UPS. John Schroeder SL30, GNA480, GTX330, Lancair ES On Sun, 16 May 2010 17:58:12 -0400, John Brick wrote: > After 4 1/2 years without trouble, my Apollo SL30 has begun to show this > message briefly on startup. Then it resolves itself and does not reoccur > in > flight. Garmin bought out Apollo, long ago and has made some upgrades I > think. Hope I can avoid sending this unit back to Garmin. > Any ideas? > > jb > ________________________________ Message 6 _____________________________________ Time: 06:33:46 PM PST US From: "John Brick" Subject: RE: AeroElectric-List: SL30 Comm Failure message Nope, no internal battery. Will try to contact tech support tomorrow. Thanks, jb -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of John Schroeder Sent: Sunday, May 16, 2010 5:15 PM Subject: Re: AeroElectric-List: SL30 Comm Failure message John Does it have an internal battery? The 480 does and it gives out some messages when it starts to go bad. Call the Garmin AT tech support people and ask them. They are great folks - like Apollo/UPS. John Schroeder SL30, GNA480, GTX330, Lancair ES On Sun, 16 May 2010 17:58:12 -0400, John Brick wrote: > After 4 1/2 years without trouble, my Apollo SL30 has begun to show this > message briefly on startup. Then it resolves itself and does not reoccur > in > flight. Garmin bought out Apollo, long ago and has made some upgrades I > think. Hope I can avoid sending this unit back to Garmin. > Any ideas? > > jb > ________________________________ Message 7 _____________________________________ Time: 07:30:26 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: A 35 amp C/B switch to control a Facet Aux Fuel Pump!!! At 07:10 PM 5/16/2010, you wrote: > >Heh guys. I'm sort of new at this so give me a little slack. I'm >trying to re-wire my aircraft with the proper wiring and changing >out my C/Bs using Klixons. Question: In my removal of the old B&P >C/Bs I came across one that was a 35-amp B&P C/B switch that was >controlling my Facet Aux Fuel Pump. The funny thing is that Facets >website says that it requires a max of 1 amp for the pump. I >thought this was unusual to me. Any comments on why someone would >wire it up with a 35amp C/B switch? Am I wrong in my >thinking? Should I be using a much smaller rated C/B switch? Need >lots of help. Not real savvy on wiring. Thanks guys. Yup, if the pump is the only thing powered by this switch/breaker, then it SHOULD be a device sized for the wire that connects the pump to the bus. Are you sure this switch/breaker was being used for BOTH its capabilities as a switch AND a breaker, or just a switch. In other words, does the switch/ breaker bolt right to a bus bar along with other breakers . . . or dose it have WIRES on both terminals, one of which goes to the REAL breaker on the bus. You may find that this otherwise oversized critter was being used just for its functionality as a switch and the real circuit protection is right at the bus. If it IS a dual purpose device, then by all means, drop to a 5A device. 35 is MUCH too large. What kind of airplane is this? Bob . . . ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.