---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 11/25/11: 14 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 12:26 AM - Just A Few More Days To Make Your List Contribution... (Matt Dralle) 1. 08:15 AM - Schematic Drawings (Paul Zimmer) 2. 02:37 PM - Wire bundle Q (chris Sinfield) 3. 03:35 PM - Re: PTT Y adapter for RST intercom (user9253) 4. 07:50 PM - Re: PTT Y adapter for RST intercom (messydeer) 5. 07:55 PM - Re: Wire bundle Q (Robert L. Nuckolls, III) 6. 07:59 PM - Re: Schematic Drawings (Robert L. Nuckolls, III) 7. 08:35 PM - KX170/175 Installation Manual (Robert L. Nuckolls, III) 8. 08:57 PM - Re: KX170/175 Installation Manual (rayj) 9. 08:58 PM - Re: PTT Y adapter for RST intercom (user9253) 10. 09:08 PM - Re: KX170/175 Installation Manual (Kelly McMullen) 11. 09:19 PM - Re: KX170/175 Installation Manual (Robert L. Nuckolls, III) 12. 09:28 PM - Re: KX170/175 Installation Manual (rayj) 13. 09:31 PM - Re: PTT Y adapter for RST intercom (messydeer) ________________________________ Message 0 _____________________________________ Time: 12:26:47 AM PST US From: Matt Dralle Subject: AeroElectric-List: Just A Few More Days To Make Your List Contribution... There is less than a week left in this year's List Fund Raiser and only a few short days to grab one of the great Contribution Gifts available this year. Support is still significantly lagging behind last year at this point but hopefully it will pick up here towards the end. Please remember that it is solely the Contributions of List members that keeps the Lists up and running as there is no commercialism or advertising on the Matronics Lists and Forums. The List Contribution web site is secure, fast, and easy and you can use a credit card, Paypal: http://www.matronics.com/contribution Or, drop a personal check in the mail to: Matt Dralle / Matronics 581 Jeannie Way Livermore CA 94550 I want to thank everyone that has already made a generous contribution to support the Lists! Thank you! Matt Dralle Matronics EMail List and Forum Administrator ________________________________ Message 1 _____________________________________ Time: 08:15:55 AM PST US From: "Paul Zimmer" Subject: AeroElectric-List: Schematic Drawings Bob, drawing Z-12 shows the conductor from the battery contactor to the battery bus as being a 12 AWG conductor of 6 inches length or less (rev. K =93 04/20/05). I understand the reason for the short conductor is for crash safety for the always on buss. However, I=99m using panel mounted circuit breakers for my three power busses (main, essential, battery) and so adhering to the 6 inch specification isn=99t possible. What are your thoughts of the addition of a properly rated circuit breaker or fusible link on the engine side of the firewall to protect the remaining conductor the length of which I estimate will be 36 to 48 inches depending on location of the electrical conductor firewall penetration? By the way, my Ebus will have one PMAG (one PMAG, and one conventional mag installation), clock, cabin lights, fuel boost, and switched Ebus alternate feed on the battery buss. Thanks ________________________________ Message 2 _____________________________________ Time: 02:37:08 PM PST US Subject: AeroElectric-List: Wire bundle Q From: "chris Sinfield" Hi all I am running my wires and coax for my radio and intercom. I also have a Dynon Ext compass wires to run as well. If i run the compass and VHF coax together in the one bundle, will I get a heading change every time I TX? what about if I run the Intercom wires with the Compass wires will the same thing happen when I TX? I just have limited holes available to put wire bundles. Chris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=359253#359253 ________________________________ Message 3 _____________________________________ Time: 03:35:26 PM PST US Subject: AeroElectric-List: Re: PTT Y adapter for RST intercom From: "user9253" Dan, Your schematic, "RST intercom DPDT PTT with shields.JPG" looks OK to me. The goal is to connect only one mic audio at a time to the handheld radio. Your schematic accomplishes that. However, I suggest that you use relays as shown on RST dwg 422-3060. Then the mic audio wires can be kept short instead of running them to the control sticks. Short wires are less likely to pick up interference. By using relays, there will be only half as many wires going to the control stick. Double pole relays will allow the hand-held x-mit key to be connected directly to ground instead of through a series diode. Who knows if the handheld transmitter will be keyed with voltage dropped across a diode? The relays will not carry much current. So miniature ones with gold plated contacts are best. RST drawing 442-4072 was confusing to me at first until I realized that the headsets plug into the intercom and the other plugs and jacks interface the intercom with the radio. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=359259#359259 ________________________________ Message 4 _____________________________________ Time: 07:50:58 PM PST US Subject: AeroElectric-List: Re: PTT Y adapter for RST intercom From: "messydeer" Thanks, Joe :-) What you say makes sense about using a relay. I drew a couple diagrams, one with a single relay and another with a double relay, but I must be missing something, cuz it looks like both of them have the transmit key connected directly to ground. I also included another RST drawing. I put a diode in the same place in my drawings, but don't know why it's needed. I'm familiar with using a reversing diode normally put between the two coil leads, which hasn't been included. Why one and not the other? Another nice thing about using relays in my particular case is that I've already got the spst stick switches made and fitted, just waiting for wires. If I figure this relay thing out, looks like I'll still be able to use them :-) -------- Dan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=359272#359272 Attachments: http://forums.matronics.com//files/ptt_single_pole_relay_168.jpg http://forums.matronics.com//files/ptt_double_pole_relay_931.jpg http://forums.matronics.com//files/apnote_03_rst_ptt_relay_136.jpg ________________________________ Message 5 _____________________________________ Time: 07:55:49 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Wire bundle Q At 04:32 PM 11/25/2011, you wrote: > > >Hi all >I am running my wires and coax for my radio and intercom. I also >have a Dynon Ext compass wires to run as well. > >If i run the compass and VHF coax together in the one bundle, will I >get a heading change every time I TX? what about if I run the >Intercom wires with the Compass wires will the same thing happen when I TX? >I just have limited holes available to put wire bundles. Run them all together. Folks who build devices for airplanes are or at least should be aware of potential hazards to proper functioning of their system. DO-160 and other certification protocols were crafted for the purpose of raising awareness of potential risks and proving that the system designer adequately compensates for those risks. In short, if any manufacturer specifically states that you should maintain "certain separation" from the wires of other systems, there is good reason to question their due diligence in designing the product. It is not difficult to craft products 99.99% immune from all expected risks. Bob . . . ________________________________ Message 6 _____________________________________ Time: 07:59:53 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Schematic Drawings At 10:11 AM 11/25/2011, you wrote: >Bob, drawing Z-12 shows the conductor from the >battery contactor to the battery bus as being a >12 AWG conductor of 6 inches length or less >(rev. K 04/20/05). I understand the reason >for the short conductor is for crash safety for >the always on buss. However, Im using panel >mounted circuit breakers for my three power >busses (main, essential, battery) and so >adhering to the 6 inch specification isnt >possible. What are your thoughts of the >addition of a properly rated circuit breaker or >fusible link on the engine side of the firewall >to protect the remaining conductor the length of >which I estimate will be 36 to 48 inches >depending on location of the electrical >conductor firewall penetration? By the way, my >Ebus will have one PMAG (one PMAG, and one >conventional mag installation), clock, cabin >lights, fuel boost, and switched Ebus alternate feed on the battery buss. If your "battery" bus is on the panel, then it's not a battery bus but yet another bus tasked with different loads. Its long feeder would be fitted with another battery contactor. A battery bus is always hot, drives wires that are always hot but protected with fast devices rated below the legacy crash safety design rules . . . and located AT the battery. Once you depart from this convention, it's some other kind of bus that gets treated like other fat-wire fed busses in the airplane. Bob . . . ________________________________ Message 7 _____________________________________ Time: 08:35:13 PM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: KX170/175 Installation Manual A coule years ago, somebody here on the List offered me a .pdf copy of the King KX170 installation manual. In the Matronics archives, there's a note where I posted availability of that document in the installation data feature of my website. Now, for some reason unbeknownst to me, I don't it it either on my website or on my hard-drive. If somebody has access to this document (or any other vintage installation manuals) in .pdf, I'd be pleased to have copies for sharing. Bob . . . ________________________________ Message 8 _____________________________________ Time: 08:57:34 PM PST US From: rayj Subject: Re: AeroElectric-List: KX170/175 Installation Manual Bob, I have a kx 145 manual, but it's in paper and would take a while to scan. If you're interested, let me know and I'll try to get it scanned over the winter. Raymond Julian Kettle River, MN "And you know that I could have me a million more friends, and all I'd have to lose is my point of view." - John Prine On 11/25/2011 10:31 PM, Robert L. Nuckolls, III wrote: > > > A coule years ago, somebody here on the List offered > me a .pdf copy of the King KX170 installation manual. > > In the Matronics archives, there's a note where I posted > availability of that document in the installation data > feature of my website. > > Now, for some reason unbeknownst to me, I don't it it > either on my website or on my hard-drive. > > If somebody has access to this document (or any > other vintage installation manuals) in .pdf, I'd > be pleased to have copies for sharing. > > > Bob . . . > > ________________________________ Message 9 _____________________________________ Time: 08:58:18 PM PST US Subject: AeroElectric-List: Re: PTT Y adapter for RST intercom From: "user9253" Dan, How about a circuit like this dwg attached? Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=359284#359284 Attachments: http://forums.matronics.com//files/ptt_relays_239.pdf ________________________________ Message 10 ____________________________________ Time: 09:08:55 PM PST US From: Kelly McMullen Subject: Re: AeroElectric-List: KX170/175 Installation Manual I have the pinout diagram, but not the install manual. On 11/25/2011 9:52 PM, rayj wrote: > > Bob, > > I have a kx 145 manual, but it's in paper and would take a while to > scan. If you're interested, let me know and I'll try to get it > scanned over the winter. > > Raymond Julian > >> >> >> A coule years ago, somebody here on the List offered >> me a .pdf copy of the King KX170 installation manual. >> >> In the Matronics archives, there's a note where I posted >> availability of that document in the installation data >> feature of my website. >> >> Now, for some reason unbeknownst to me, I don't it it >> either on my website or on my hard-drive. >> >> If somebody has access to this document (or any >> other vintage installation manuals) in .pdf, I'd >> be pleased to have copies for sharing. >> >> >> Bob . . . >> >> >> >> > > ________________________________ Message 11 ____________________________________ Time: 09:19:29 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: KX170/175 Installation Manual At 10:52 PM 11/25/2011, you wrote: > >Bob, > >I have a kx 145 manual, but it's in paper and would take a while to >scan. If you're interested, let me know and I'll try to get it >scanned over the winter. Yeah, that's a big job. I used to have access to an automatic scanner that would take a stack of paper and make a big .pdf of two sided paper copies. Sure was handy. If you'd like to see the work added to the body of data offered, it would be appreciated but don't let it get in the way of anything important. Bob . . . ________________________________ Message 12 ____________________________________ Time: 09:28:28 PM PST US From: rayj Subject: Re: AeroElectric-List: KX170/175 Installation Manual do not archive I'll try to get it done, a little at a time. Raymond Julian Kettle River, MN "And you know that I could have me a million more friends, and all I'd have to lose is my point of view." - John Prine On 11/25/2011 11:16 PM, Robert L. Nuckolls, III wrote: > > > At 10:52 PM 11/25/2011, you wrote: >> >> Bob, >> >> I have a kx 145 manual, but it's in paper and would take a while to >> scan. If you're interested, let me know and I'll try to get it scanned >> over the winter. > > Yeah, that's a big job. I used to have access to > an automatic scanner that would take a stack of paper > and make a big .pdf of two sided paper copies. > Sure was handy. > > If you'd like to see the work added to the body > of data offered, it would be appreciated but > don't let it get in the way of anything important. > > > Bob . . . > > ________________________________ Message 13 ____________________________________ Time: 09:31:00 PM PST US Subject: AeroElectric-List: Re: PTT Y adapter for RST intercom From: "messydeer" Nice :-) Hadn't thought about this before, but I think the PTT relay grounds would go to a/c ground, and the other 4 would go to the radio jack sleeve, right? I also looked around Digikey.com for the relays. It was hard to match the relays with sockets that are sold separately. I'm browsing through Ebay, which may have something. -------- Dan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=359290#359290 ------------------------------------------------------------------------------------- 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.