---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 06/06/09: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:11 AM - Re: Re: Essential Incident - Almost (Long) (Ed Anderson) 2. 06:15 AM - Re: E-bus design goals (nuckollsr) 3. 10:27 AM - Re: Re: Stereo to Mono (Roger Cole) 4. 11:59 AM - xponder ant mounting (woxofswa) 5. 01:05 PM - Re: Re: Stereo to Mono (John Morgensen) 6. 04:05 PM - Wiring is done but SL-30 comm won't transmit (Jim Thorne) 7. 04:26 PM - Cessna 150F Landing/Taxi light switch. (Stuart Driver) 8. 04:41 PM - Re: Wiring is done but SL-30 comm won't transmit (Floyd) 9. 05:15 PM - Re: Wiring is done but SL-30 comm won't transmit (Ralph E. Capen) 10. 08:52 PM - Re: Re: Stereo to Mono (Matt Prather) ________________________________ Message 1 _____________________________________ Time: 06:11:03 AM PST US From: "Ed Anderson" Subject: RE: AeroElectric-List: Re: Essential Incident - Almost (Long) Hi Lenny, I have an auto alternator with internal regulator. The alternator ONLY needs battery voltage to get started - once its producing voltage it uses its own voltage to keep its field coils energized and magnetized. In fact, I can pull the alternator field coil circuit breaker once the engine is running and it has no effect on the alternator. Yes, you do need the battery to jump start /bootstrap the alternator to producing voltage. Now with the typical aircraft alternator, it's a bit different story. They normally have an external regulator which permits you to remove voltage from the alternator field coil and in this case, if you pull the CB and remove voltage from the field coil it will stop producing voltage. But, once again you only need the battery to get it started. At least that is my understanding of the major difference between auto and aircraft alternators. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Lenny Iszak Sent: Friday, June 05, 2009 10:45 PM Subject: AeroElectric-List: Re: Essential Incident - Almost (Long) Ed, Wouldn't isolating the battery from the alternator stop the alternator from generating power? Or do you have a permanent magnet alternator? Or was the alternator originally switched to the auxiliary, now non-existent battery to keep feeding your e-bus? Lenny Read this topic online here: http://forums.matronics.com/viewtopic.php?p=247043#247043 __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. ________________________________ Message 2 _____________________________________ Time: 06:15:33 AM PST US Subject: AeroElectric-List: Re: E-bus design goals From: "nuckollsr" There are no risks to electro-whizzies for operating the airplane with the e-bus alternate feed switch ON. However, you need to pre flight test the two power paths for operation. The original operating protocols suggested closing the e-bus alternate feed switch to power up the comm radio to get the ATIS and/or clearance delivery. This presumes, of course that your departure field has such services. If not, then closing this switch momentarily before doing anything else proves availability of this power path. The e-bus alternate feed switch would be off after closing the battery contactor and during engine start. After engine start, the e-bus should be verified energized via the normal feed path diode thus proving that power path. Re-closing the e-bus alternate feed switch later for the purpose of "getting the e-bus voltage up" offers no risk to the system or equipment. Be sure to add "E-bus alternate feed switch - OFF" to the post-flight check list. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=247068#247068 ________________________________ Message 3 _____________________________________ Time: 10:27:20 AM PST US From: Roger Cole Subject: Re: AeroElectric-List: Re: Stereo to Mono Does anyone know if the 1/8-inch phone jack audio output on a Garmin 396 is stereo or monaural? I plan to route this output into the monaural input of the intercom. If the Garmin output is stereo, I can do the two-resistor mixer that was mentioned previously in this thread. Roger Cole 1946 Cessna 140, flying Murphy Elite #709, working on fuselage rcole927@earthlink.net On Jun 5, 2009, at 12:40 AM, Chris Hand wrote: > decades news. If you > with play time of 6 hours > > > > Actually, I use a Sony Walkman in my RV-6A that has something on > the order of 400+ songs right now with plenty of storage room to > spare for more songs, videos, photos, etc. Weighs a few ounces, > plugs into my intercom, didn't cost much, and works great. It's a > Sony Walkman digital media player - smaller physical size than the > i-pods my kids prefer and does all I want for the RV. Although > once upon a time I did have one of the Walkman units you are > talking about, Sony has rehashed the name with current > technology.....not sure which era Don's Walkman is from. > > Chris > > ----- Original Message ----- > From: gmcjetpilot@yahoo.com > To: aeroelectric-list@matronics.com ; don@contractorsnorthwest.com > Sent: Monday, June 01, 2009 3:00 AM > Subject: AeroElectric-List: Re: Stereo to Mono > > I would not use a stereo to mono jack to go FROM stereo to MONO. It > really is made > for going from mono to drive a stereo headphone, split to drive > both L & R channels. > It is not designed to combine stereo to mono. > > Whats the big deal? Shorting L & R of an amp can cause damage, even > an iPod. If the > "Walkman" has a mono switch than its OK, but iPods do not have mono > switches. > > If you don't have a MP3 player (iPod) get one. Walkman are last > decades news. If you > don't have an iPod you can get 100's of hours of music on them with > play time of 6 hours > per charge. They are also small and light weight. > > There are some threads on how to properly combine stereo and ground > issues in this > forum. Just use the search engine. The easy way is with capacitor > and resistor, which > you can wire behind the panel. You would use a stereo 1/8" phone > jack and then > go from stereo to mono with the isolation Cap and Resistor. > > Cheers George > > > >From: > >Subject: AeroElectric-List: Stereo to Mono > > > >5/30/2009 > >Hello Don, You wrote: "I want to install a plug in my panel to > plug my > >stereo Walkman into but my intercom (PM1000 II) is mono." > >Here is one way to solve that problem -- > > >http://www.radioshack.com/product/index.jsp?productId=2102669 > > >This adapter will put the output of a mono jack on your panel into > both > >sides of your stereo Walkman. > > >Also take a look at some of the other adapters available. You may > want to > >put a normal airplane earphone sized jack on your instrument panel > so that > >either your Walkman (with an adapter) or an airplane earphone set > (without > >adapter) may be plugged in. > > > >=========================== > >> > >>Subject: AeroElectric-List: Stereo to Mono > >>From: "Don McIntosh" > >> > >>I want to install a plug in my panel to plug my stereo Walkman > into but my > >>intercom (PM1000 II) is mono. Can I just splice the Right and > Left leads together > >>to go into the intercom? Also the intercom pins are labeled "HI" > and "LOW". > >>Is this just the pin identification numbers? > >>-------- > >>Don McIntosh > >>Kitfox Series 7 under construction > >>Jabiru 3300 > > href="http://www.matronics.com/Navigator?AeroElectric-List">http:// > www.matronics.com/Navigator?AeroElectric-List > href="http://forums.matronics.com">http://forums.matronics.com > href="http://www.matronics.com/contribution">http:// > www.matronics.com/c > > ________________________________ Message 4 _____________________________________ Time: 11:59:33 AM PST US Subject: AeroElectric-List: xponder ant mounting From: "woxofswa" Since I already installed a reinforcement plate into the floor of my tailcone to mount my ground power receptacle, is there any reason that I can't mount my transponder antenna into the same plate an inch or two from the piper plug receptacle? Thanks in advance. I am loathe to drill holes into my skin without checking first. -------- Myron Nelson Mesa, AZ Emp completed, legacy build fuse in progress Read this topic online here: http://forums.matronics.com/viewtopic.php?p=247103#247103 ________________________________ Message 5 _____________________________________ Time: 01:05:44 PM PST US From: John Morgensen Subject: Re: AeroElectric-List: Re: Stereo to Mono I think I have a similar problem in a spam can. There is a 1/8 plug coming out of the intercom that I can plug into a Garmin 496. The results are audible but poor. XM radio is barely audible but verbal warnings from the 496 are much clearer. Could it be that I need a 1/8 mono to stereo adapter or is additional wiring required? Can I measure the resistance of the adapter to determine if it contains more than a solid connection? John Morgensen Roger Cole wrote: > Does anyone know if the 1/8-inch phone jack audio output on a Garmin > 396 is stereo or monaural? I plan to route this output into the > monaural input of the intercom. If the Garmin output is stereo, I can > do the two-resistor mixer that was mentioned previously in this thread. > > Roger Cole > 1946 Cessna 140, flying > Murphy Elite #709, working on fuselage > rcole927@earthlink.net > ________________________________ Message 6 _____________________________________ Time: 04:05:23 PM PST US From: "Jim Thorne" Subject: AeroElectric-List: Wiring is done but SL-30 comm won't transmit I used the bottom half of the Z-13 or I guess the Z-11 drawings. Finally turned on the Master Switch. The good news all the smoke stayed in the wires and the fuses didn't blow. The radio receives loud and clear. The only problem is when I hit the PTT on the SL-30 all I get is a loud squeal, thank goodness ground control didn't know where it was coming from, where do I start looking, using the old look for the simple fixes first? I have the CH stick grips with the PTT in the trigger portion. I'm sure that I'm not the first that has experienced this problem but couldn't find anything in the archives so would appreciate any helpful suggestions. Jim Thorne RV-7A CHD Getting close ________________________________ Message 7 _____________________________________ Time: 04:26:30 PM PST US From: "Stuart Driver" Subject: AeroElectric-List: Cessna 150F Landing/Taxi light switch. I have a very basic question. The switch in question burnt out so I obtained a replacement. For the life of me I can't figure out which wire goes where. I have three wires, power and feeds to the Landing and Taxi lights. The switch has four connectors marked H,R,A, B. The case is marked 600 and is a pull switch with two positions. Can anyone help? I am aware it is not RV related. When I'm not flying my RV4 I have the Cessna to take pictures etc. SSD ________________________________ Message 8 _____________________________________ Time: 04:41:33 PM PST US From: "Floyd" Subject: Re: AeroElectric-List: Wiring is done but SL-30 comm won't transmit Jim, I had the same thing and it turned out to be a shorted antenna cable. Disconnect the cable at both ends and use an ohm meter to determine if the center connector is shorted to the ground. In my case, one of the BNC connectors was shorted. Hope this helps. Floyd Wilkes 601XL ----- Original Message ----- From: Jim Thorne To: aeroelectric-list@matronics.com Sent: Saturday, June 06, 2009 5:55 PM Subject: AeroElectric-List: Wiring is done but SL-30 comm won't transmit I used the bottom half of the Z-13 or I guess the Z-11 drawings. Finally turned on the Master Switch. The good news all the smoke stayed in the wires and the fuses didn't blow. The radio receives loud and clear. The only problem is when I hit the PTT on the SL-30 all I get is a loud squeal, thank goodness ground control didn't know where it was coming from, where do I start looking, using the old look for the simple fixes first? I have the CH stick grips with the PTT in the trigger portion. I'm sure that I'm not the first that has experienced this problem but couldn't find anything in the archives so would appreciate any helpful suggestions. Jim Thorne RV-7A CHD Getting close ________________________________ Message 9 _____________________________________ Time: 05:15:46 PM PST US From: "Ralph E. Capen" Subject: Re: AeroElectric-List: Wiring is done but SL-30 comm won't transmit When you hit the trigger, does the SL30 TX light go on - indicating that the mic was keyed? ----- Original Message ----- From: Jim Thorne To: aeroelectric-list@matronics.com Sent: Saturday, June 06, 2009 6:55 PM Subject: AeroElectric-List: Wiring is done but SL-30 comm won't transmit I used the bottom half of the Z-13 or I guess the Z-11 drawings. Finally turned on the Master Switch. The good news all the smoke stayed in the wires and the fuses didn't blow. The radio receives loud and clear. The only problem is when I hit the PTT on the SL-30 all I get is a loud squeal, thank goodness ground control didn't know where it was coming from, where do I start looking, using the old look for the simple fixes first? I have the CH stick grips with the PTT in the trigger portion. I'm sure that I'm not the first that has experienced this problem but couldn't find anything in the archives so would appreciate any helpful suggestions. Jim Thorne RV-7A CHD Getting close ________________________________ Message 10 ____________________________________ Time: 08:52:00 PM PST US Subject: Re: AeroElectric-List: Re: Stereo to Mono From: "Matt Prather" The Garmin 396 owner's manual makes reference to connecting stereo headphones to the audio jack on the 396 (p114). I plug my 396 into my car stereo's aux port all the time. I'm pretty sure I get stereo signals from it. Regards, Matt- > I think I have a similar problem in a spam can. There is a 1/8 plug > coming out of the intercom that I can plug into a Garmin 496. The > results are audible but poor. XM radio is barely audible but verbal > warnings from the 496 are much clearer. Could it be that I need a 1/8 > mono to stereo adapter or is additional wiring required? > > Can I measure the resistance of the adapter to determine if it contains > more than a solid connection? > > John Morgensen > > Roger Cole wrote: >> Does anyone know if the 1/8-inch phone jack audio output on a Garmin >> 396 is stereo or monaural? I plan to route this output into the >> monaural input of the intercom. If the Garmin output is stereo, I can >> do the two-resistor mixer that was mentioned previously in this thread. >> >> Roger Cole >> 1946 Cessna 140, flying >> Murphy Elite #709, working on fuselage >> rcole927@earthlink.net >> > > ------------------------------------------------------------------------------------- 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.