---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 12/19/03: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:01 AM - Audio panel, of sorts... (Larry Bowen) 2. 06:10 AM - electrical wiring (Dean May) 3. 06:27 AM - Re: ANL 20n current limiter source (Robert L. Nuckolls, III) 4. 06:33 AM - Re: Microair T2000 testing BLANK_LINES_70_80 (Robert L. Nuckolls, III) 5. 06:33 AM - Re: OV module on RV with 60A (Robert L. Nuckolls, III) 6. 06:34 AM - Re: OV module on RV with 60A (Robert L. Nuckolls, III) 7. 07:09 AM - Re: Microair T2000 testing BLANK_LINES_70_80 (Ken Simmons) 8. 09:49 AM - Re: Stereo (not really) intercoms (Jim and Lucy) 9. 10:20 AM - Re: Stereo (not really) intercoms (Larry Bowen) ________________________________ Message 1 _____________________________________ Time: 05:01:44 AM PST US Subject: AeroElectric-List: Audio panel, of sorts... From: "Larry Bowen" --> AeroElectric-List message posted by: "Larry Bowen" I'm finally wiring my intercom inputs as described below with a capacitor. Does it matter which way the capacitor is oriented? - Larry Bowen Larry@BowenAero.com http://BowenAero.com >Thanks Bob. How would I determine the size for the capacitor? > >- >Larry Bowen >Larry@BowenAero.com >http://BowenAero.com >2003 - The year of flight! > > >> -----Original Message----- >> From: Robert L. Nuckolls, III [mailto:bob.nuckolls@cox.net] >> > >> >I have 3 or 4 audio signals I need to capture somehow without a >> >traditional audio panel. For example, nav radio, AOA, traffic >> >detector, etc. I also have an ol' 4-place NAT intercom. >> I'm wondering > >if I can run the audio out from these various devices to the > otherwise > >unused MIC pins on the intercom. As an example, passenger 3 will > >actually be AOA annunciation. Is there any reason why this wouldn't > >work? > > This might work. You want to use a capacitor to couple audio to > these inputs to keep the microphone DC power on these pins from > feeding back into or being loaded by the audio sources. Headset > audio levels are in the same ballpark as microphone levels so > I'd say the odds are in your favor. > > Bob . . . ________________________________ Message 2 _____________________________________ Time: 06:10:50 AM PST US From: "Dean May" Subject: AeroElectric-List: electrical wiring --> AeroElectric-List message posted by: "Dean May" Bob; I recently purchased your book "The Aeroelectric Connection" and noticed a conflict within. In the chapter "Electromagnetic Compatibility" page 16-12, paragraph three states "... keep fat wires away from skinny wires." which I assume to mean that the 2 & 4 gauge wires should be in a separate conduit from the 20 & 22 gauge wires. However, you then state in Appendix Z, Note 5; "Try to run ALL wiring in a single path down one side of the airplane. ... Use one side for wires, the other for engine controls." Which is correct? Thanks Dean May ________________________________ Message 3 _____________________________________ Time: 06:27:45 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: ANL 20n current limiter source --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 07:51 PM 12/18/2003 -0500, you wrote: >--> AeroElectric-List message posted by: "Dan O'Brien" > >Was planning to place a final order to collect remaining needs for my >electrical system and saw that the B&C site doesn't offer ANL 20 current >limiters. I figured this would be the right one for my #2 alternator, the >SD-20. If not, would I do harm by substituting an ANL 40? An ANL40 would be fine there. Alternatively you could use an automotive in-line fuse holder for a "fat fuse" . . . there is a line of plastic plug in fuses that are big brothers to the ATC plastics that fit the fuseblocks. Many automotive stores stock the Bussman HHX or something similar. http://www.bussauto.com/pdf/inlinefuseholder.pdf You can also buy fuses down to 20A for this holder at the same store . . . I'd put a 30A fuse in it. >On a similar topic, the information from Continental says that the >alternator that comes with the engine (IO-550) provides 70 amps. Should I >order an ANL 60 or an ANL 70 for the primary alternator? ANL60 from B&C would be fine here. The ANL series limiters are VERY robust compared to fuses and the potential overload on an "undersized" limiter is not an issue. Bob . . . ________________________________ Message 4 _____________________________________ Time: 06:33:08 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Microair T2000 testing BLANK_LINES_70_80 --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 11:43 AM 12/18/2003 -0700, you wrote: >--> AeroElectric-List message posted by: "Ken Simmons" > >Bob, > >I picked up a used T2000 transponder, but I'm not ready to install yet. Is >there a good way to test this? > >Specifically, my concerns are turning the thing on without an antenna. I >know transmitters can be damaged without a proper load attached, but I'm >not sure how a transponder works in regards to transmitting. Does it only >repond if it's interrogated? Will it receive and interrogation signal >without an antenna attached? It won't talk without being interrogated. Why do you need to turn it on if you don't intend to have an antenna connected yet? Bob . . . ________________________________ Message 5 _____________________________________ Time: 06:33:47 AM PST US From: "Robert L. Nuckolls, III" internally-regulated alt. Subject: Re: AeroElectric-List: OV module on RV with 60A internally-regulated alt. --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" internally-regulated alt. At 12:59 AM 12/19/2003 +0000, you wrote: >--> AeroElectric-List message posted by: "Amit Dagan" > >Hi All, >I would like to see a picture (or explanation) of an RV with Bob's OV module >and relay for the 60A alt that VAN's sell. >Thanks a lot, >Amit, RV-7, wiring. Not sure I understand your question. Does the alternator you have come with a built in regulator? Bob . . . ________________________________ Message 6 _____________________________________ Time: 06:34:53 AM PST US From: "Robert L. Nuckolls, III" internally-regulated alt. Subject: Re: AeroElectric-List: OV module on RV with 60A internally-regulated alt. --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" internally-regulated alt. At 12:59 AM 12/19/2003 +0000, you wrote: >--> AeroElectric-List message posted by: "Amit Dagan" > >Hi All, >I would like to see a picture (or explanation) of an RV with Bob's OV module >and relay for the 60A alt that VAN's sell. >Thanks a lot, Aha! you did mention this in the subject line. Okay, you can take any of the Z-figs and modify alternator wiring in accordance with Z-24 . . . See: http://www.aeroelectric.com/FAQ/Internal_Regulator/ Bob . . . ________________________________ Message 7 _____________________________________ Time: 07:09:36 AM PST US From: "Ken Simmons" Subject: Re: AeroElectric-List: Microair T2000 testing BLANK_LINES_70_80 --> AeroElectric-List message posted by: "Ken Simmons" It is a used unit and I guess I just wanted to make sure it would turn on(I don't have an antenna yet). I guess the best idea is to go ahead and buy an antenna and test it that way. I don't think that would cause any problems as long as it's left in standby. Of course, I'm 50 miles from the nearest radar so I don't think there would be a problem anyway. Thanks. Ken ---------- Original Message ---------------------------------- From: "Robert L. Nuckolls, III" >--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" > >At 11:43 AM 12/18/2003 -0700, you wrote: >>--> AeroElectric-List message posted by: "Ken Simmons" >> >>Bob, >> >>I picked up a used T2000 transponder, but I'm not ready to install yet. Is >>there a good way to test this? >> >>Specifically, my concerns are turning the thing on without an antenna. I >>know transmitters can be damaged without a proper load attached, but I'm >>not sure how a transponder works in regards to transmitting. Does it only >>repond if it's interrogated? Will it receive and interrogation signal >>without an antenna attached? > > It won't talk without being interrogated. Why do you need to > turn it on if you don't intend to have an antenna connected > yet? > > Bob . . . > ________________________________ Message 8 _____________________________________ Time: 09:49:58 AM PST US From: Jim and Lucy Subject: Re: AeroElectric-List: Stereo (not really) intercoms --> AeroElectric-List message posted by: Jim and Lucy I have an installation manual for that intercom in the shop. I could scan it and email it to you if you still need it. Jim Pollard At 08:16 PM 12/13/2003 -0500, you wrote: >--> AeroElectric-List message posted by: "Larry Bowen" > >I have a NAT AA80-001 intercom I'm trying to wire to my RV8. It seems >that this intercom (as well as a few others I've researched) accept >stereo input -- but have mono output. What's the point of that?! I >have stereo headsets, jacks, music in, and music source...but mono >coming out of the intercom. Is this a problem, or should I just tie the >L and R together at the headset jack and press on? > >Also, if anyone has a soft copy of the owners/installation manual for >the AA80-001, could you forward to me? Thanks. > >Thanks. > >- >Larry Bowen >Larry@BowenAero.com >http://BowenAero.com ________________________________ Message 9 _____________________________________ Time: 10:20:52 AM PST US Subject: Re: AeroElectric-List: Stereo (not really) intercoms From: "Larry Bowen" --> AeroElectric-List message posted by: "Larry Bowen" Another gentleman already sent it to me. Thanks though. - Larry Bowen Larry@BowenAero.com http://BowenAero.com do not archive. Jim and Lucy said: > --> AeroElectric-List message posted by: Jim and Lucy > > I have an installation manual for that intercom in the shop. > I could scan it and email it to you if you still need it. > > Jim Pollard > > > At 08:16 PM 12/13/2003 -0500, you wrote: >>--> AeroElectric-List message posted by: "Larry Bowen" >> >> >>I have a NAT AA80-001 intercom I'm trying to wire to my RV8. It seems >>that this intercom (as well as a few others I've researched) accept >>stereo input -- but have mono output. What's the point of that?! I >>have stereo headsets, jacks, music in, and music source...but mono >>coming out of the intercom. Is this a problem, or should I just tie the >>L and R together at the headset jack and press on? >> >>Also, if anyone has a soft copy of the owners/installation manual for >>the AA80-001, could you forward to me? Thanks. >> >>Thanks. >> >>- >>Larry Bowen >>Larry@BowenAero.com >>http://BowenAero.com