---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 05/20/06: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:09 AM - Re: MB antenna length (Brian Lloyd) 2. 11:50 AM - Where to install the hall effect sensor (Aart van't Veld) 3. 12:27 PM - SL-30 Nav Audio Connection... (Scott) 4. 01:31 PM - Re: Where to install the hall effect sensor (Ken) 5. 01:45 PM - Re: SL-30 Nav Audio Connection... (Bill Denton) 6. 03:02 PM - ANL current limiters (Craig Mac Arthur) 7. 03:48 PM - Re: SL-30 Nav Audio Connection... (Scott) 8. 07:40 PM - Re: ANL current limiters - Bob need you comment (jerb) 9. 07:51 PM - ANL current limiters - Bob, need your comment. (BobsV35B@aol.com) ________________________________ Message 1 _____________________________________ Time: 08:09:41 AM PST US From: Brian Lloyd Subject: Re: AeroElectric-List: MB antenna length --> AeroElectric-List message posted by: Brian Lloyd On May 19, 2006, at 8:10 PM, Robert G. Wright wrote: > --> AeroElectric-List message posted by: "Robert G. Wright" > > > Where is the source for a 40" MB coax antenna? All I find in the > Connection > is a 75" length for a quarter wave balun. Antennas don't necessarily need to be resonant and/or efficient. If you have a lot of signal you might not need a lot of antenna. Consider that a marker beacon transmitter may run 50W of power or so into a directional antenna beaming it straight up at your airplane. Now consider that you need to receive it from only a couple thousand feet away at most. It doesn't take a lot of antenna at the receiver to pick up that signal. Frankly, just about any piece of wire will suffice as a marker beacon antenna. So, take a piece of coax, strip the shield off of about 40" of it (length is not critical) and connect the other end to your MB receiver. Put the unshielded 40" or so where it might be able to see the ground without to much shielding from the airframe. There is your MB antenna. Brian Lloyd 361 Catterline Way brian-yak AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry ________________________________ Message 2 _____________________________________ Time: 11:50:23 AM PST US From: "Aart van't Veld" Subject: AeroElectric-List: Where to install the hall effect sensor --> AeroElectric-List message posted by: "Aart van't Veld" Guys, I have read all available info in the list on the Hall effect sensor to measure currents but would like some detailed input and pro's and cons on the different positions where to put these sensors, be it over battery cables, bus feeders or alternator b-leads. Your help is appreciated! Aart van't Veld, RV7, wiring ________________________________ Message 3 _____________________________________ Time: 12:27:21 PM PST US From: "Scott" Subject: AeroElectric-List: SL-30 Nav Audio Connection... --> AeroElectric-List message posted by: "Scott" Is the Garmin SL-30 nav audio output (pins 20 and 23) only used if one has an audio panel? If pins 20 and 23 are not used, is nav audio output on the com side via pins 13 and 14? Or should the nav audio output (pins 20 and 23) be tied to the headphone circuit? Thanks for saving me the experimentation. -Scott Fifield ________________________________ Message 4 _____________________________________ Time: 01:31:26 PM PST US From: Ken Subject: Re: AeroElectric-List: Where to install the hall effect sensor --> AeroElectric-List message posted by: Ken Hi Aart FWIW I put one on the main b-lead. It lets me see how hard the alternator is working and it still confirms various items are working (drawing current) similar to the way it would if on the main bus feeder. I quickly learned to tell how much charging current is going into the battery by subtracting the normal running loads from the reading. I'd put it in the same place if doing it again. Ken Aart van't Veld wrote: >--> AeroElectric-List message posted by: "Aart van't Veld" > >Guys, > >I have read all available info in the list on the Hall effect sensor to >measure currents but would like some detailed input and pro's and cons on >the different positions where to put these sensors, be it over battery >cables, bus feeders or alternator b-leads. Your help is appreciated! > > > >Aart van't Veld, RV7, wiring > > ________________________________ Message 5 _____________________________________ Time: 01:45:57 PM PST US From: "Bill Denton" Subject: RE: AeroElectric-List: SL-30 Nav Audio Connection... --> AeroElectric-List message posted by: "Bill Denton" As part of the "setup" for the SL30, you are given the option of having the NAV audio "mixed" with the COM audio. This will make the NAV audio also appear on pins 13 and 14. -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Scott Sent: Saturday, May 20, 2006 2:24 PM Subject: AeroElectric-List: SL-30 Nav Audio Connection... --> AeroElectric-List message posted by: "Scott" Is the Garmin SL-30 nav audio output (pins 20 and 23) only used if one has an audio panel? If pins 20 and 23 are not used, is nav audio output on the com side via pins 13 and 14? Or should the nav audio output (pins 20 and 23) be tied to the headphone circuit? Thanks for saving me the experimentation. -Scott Fifield ________________________________ Message 6 _____________________________________ Time: 03:02:40 PM PST US From: "Craig Mac Arthur" Subject: AeroElectric-List: ANL current limiters --> AeroElectric-List message posted by: "Craig Mac Arthur" I understand that the ANL current limiter installed by the starter contactor protects the "B" lead from a large current draw from the battery. My somewhat philosophical question is this: Why not use one to protect the fat wire from the battery contactor to the main power distribution bus? Of course, the battery contactor can be manually opened, but there is recognition time and action required. Also, in the case of an accident that damages where that wire penetrates the firewall, there is no automatic protection for that wire. Craig Mac Arthur _________________________________________________________________ Is your PC infected? Get a FREE online computer virus scan from McAfee Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 ________________________________ Message 7 _____________________________________ Time: 03:48:49 PM PST US From: "Scott" Subject: Re: AeroElectric-List: SL-30 Nav Audio Connection... --> AeroElectric-List message posted by: "Scott" Bill, and Aeroelectric Gang- Thanks. That's exactly what I wanted to know. Is it true that when the Nav is selected, the com side is disabled? If so, the "mixing" of the com and nav on pins 13 and 14 would not be an issue. Is there any advantage at all to using Nav Audio on pins 20 and 23 if I'm not using an audio panel? Thanks again- Scott Fifield ----- Original Message ----- From: "Bill Denton" Sent: Saturday, May 20, 2006 2:42 PM Subject: RE: AeroElectric-List: SL-30 Nav Audio Connection... > --> AeroElectric-List message posted by: "Bill Denton" > > As part of the "setup" for the SL30, you are given the option of having the > NAV audio "mixed" with the COM audio. This will make the NAV audio also > appear on pins 13 and 14. > > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Scott > Sent: Saturday, May 20, 2006 2:24 PM > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: SL-30 Nav Audio Connection... > > > --> AeroElectric-List message posted by: "Scott" > > Is the Garmin SL-30 nav audio output (pins 20 and 23) only used if one has > an audio panel? If pins 20 and 23 are not used, is nav audio output on the > com side via pins 13 and 14? Or should the nav audio output (pins 20 and > 23) be tied to the headphone circuit? Thanks for saving me the > experimentation. > > -Scott Fifield > > ________________________________ Message 8 _____________________________________ Time: 07:40:12 PM PST US From: jerb Subject: Re: AeroElectric-List: ANL current limiters - Bob need you comment --> AeroElectric-List message posted by: jerb I would think the ANL would go on the output lead/terminal of the alternator to reduce the noise component alternators generate. Time to see guidance form a higher level, Bob would you mind commenting on this topic. jerb At 04:56 PM 5/20/2006, you wrote: >--> AeroElectric-List message posted by: "Craig Mac Arthur" > > >I understand that the ANL current limiter installed by the starter contactor >protects the "B" lead from a large current draw from the battery. > >My somewhat philosophical question is this: Why not use one to protect the >fat wire from the battery contactor to the main power distribution bus? Of >course, the battery contactor can be manually opened, but there is >recognition time and action required. Also, in the case of an accident that >damages where that wire penetrates the firewall, there is no automatic >protection for that wire. > >Craig Mac Arthur > >_________________________________________________________________ >Is your PC infected? Get a FREE online computer virus scan from McAfee >Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 > > ________________________________ Message 9 _____________________________________ Time: 07:51:59 PM PST US From: BobsV35B@aol.com Subject: AeroElectric-List: ANL current limiters - Bob, need your comment. --> AeroElectric-List message posted by: BobsV35B@aol.com Good Evening jerb Not sure, but I believe 'Lectric Bob told us he would be off list while he and his bride were enjoying a trip to conduct a seminar. Happy Skies, Old Bob AKA Bob Siegfried Ancient Aviator Stearman N3977A Brookeridge Air Park LL22 Downers Grove, IL 60516 630 985-8503 In a message dated 5/20/2006 9:42:30 P.M. Central Standard Time, ulflyer@verizon.net writes: --> AeroElectric-List message posted by: jerb I would think the ANL would go on the output lead/terminal of the alternator to reduce the noise component alternators generate. Time to see guidance form a higher level, Bob would you mind commenting on this topic. jerb