---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 03/31/15: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:56 AM - Re: Re: Relays (rayj) 2. 09:17 AM - Re: Re: Handheld transceiver alternate antenna (Robert L. Nuckolls, III) 3. 10:47 AM - BMA Powerboard with Z19RB (Hariharan Gopalan) 4. 12:40 PM - Re: Re: Relays (Robert L. Nuckolls, III) 5. 02:10 PM - Re: BMA Powerboard with Z19RB (Robert L. Nuckolls, III) 6. 05:50 PM - Re: BMA Powerboard with Z19RB (Kelly McMullen) 7. 08:26 PM - Re: BMA Powerboard with Z19RB (Hariharan Gopalan) ________________________________ Message 1 _____________________________________ Time: 05:56:14 AM PST US From: rayj Subject: Re: AeroElectric-List: Re: Relays Larry, FWIW, I have had the same problem in the past, and found it was associated with sending or replying to emails with images embedded/attached to them. Didn't spend the time to find a solution other than to avoid images, so I can't offer any real solution to the problem. do not archive Raymond Julian Kettle River, MN The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest are the traits of success. And while men admire the quality of the first they love the produce of the second. -John Steinbeck, novelist, Nobel laureate (1902-1968) On 03/30/2015 10:28 PM, LarryRosen wrote: > > I will try one more time. Not sure why my message got through without any text. > > Putting the signal relay into a backshell seems like an interesting project I would like to try. > > > Are there any d-sub backshells that are better suited to stuffing the relay into? > I have looked some electrical catalogs for a mounting bracket like you describe. I take it it is a roll your own. > And finally would you solder wire to the relay and use pins into the d-sub? > > I will post pictures when I get it done. > Larry > > -------- > Larry Rosen > #40356 > N205EN (reserved) > <http> > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=440053#440053 > > ________________________________ Message 2 _____________________________________ Time: 09:17:30 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Handheld transceiver alternate antenna At 11:22 2015-03-30, you wrote: Found this article in kitplanes archive which describes a $2 antenna diplexer. http://tinyurl.com/nz6q8qb This would more properly be called a 'switch', a system whereby a single antenna may be routed to any one of two or more transceivers. A 'diplexer' is a device that allows two activities to share a single resource. WAyyyy back when, television receivers had both UHF and VHF antenna terminals on the back. One was expected to have both UHF and VHF antennas on the roof with separate feed lines brought into the house. A 'diplexer' would combine two signals from separate antennas for transport into the house on one feed line. A similar device was hooked up in reverse at the receiver to feed UHF and VHF signals to their respective inputs. Sony EAC-DD1 SAT/VHF/UHF Diplexer MT-1006 300-Ohm Input to 75 & 300-Ohm Output VHF/UHF/FM An Later on, wide band tuners would accept UHF and VHF signals into a single antenna jack . . .but a diplexer was still a useful thing to use for combining the two spectrums into one feed line on the roof. A duplexer is a bit more sophisticated. It's generally used to allow simultaneous use of a single feed line for both receive and transmit. Repeaters of all stripe will make good use of a duplexer to watch a single antenna and feed line for sub-microvolt signals coming down then separating that signal out to a receiver while simultaneously allowing a 100 watt transmitter to squirt a signal up the same feed line to the same antenna. TX RX VARI-NOTCH VHF DUPLEXER 144-174 MHz Model 28-37-06C HAM R Real magic stuff. I've tuned dozens of such devices and built a few for both commercial and amateur radio applications. They save you a lot of money for feed lines and antennas when your antenna site is hundreds to perhaps a thousand feet up the side of a tower. But they can be a 'horsy' beast. The legacy duplexer for 146Mhz was 4 to 8 "stove pipes" about 20" tall. UHF duplexers are proportionately smaller but still substantial pieces of equipment. There is good application for a diplexer/spltter in aircraft where a single VHF VOR antenna can be pressed into service to drive either multiple VOR receivers or even multiple GlideSlope receivers. Avionics Antenna Comant Dual VOR / Glide Slope Splitter, P/N CI What good man Jim has described in his article is a clone (along with evaluation of performance) of the Icom hand-held antenna jack and SWITCH that we discussed earlier in this thread and at some length years ago. Emacs! ^^^^ Icom Product ^^^^ Emacs! ^^^^ AEC DIY project ^^^^ Bob . . . ________________________________ Message 3 _____________________________________ Time: 10:47:32 AM PST US Subject: AeroElectric-List: BMA Powerboard with Z19RB From: Hariharan Gopalan Hello Group I happen to acquire a Blue Mountain Avionics Powerboard along with an EFIS purchase and contemplating incorporating this in the Z19RB on my Bearhawk. The Powerboard came with lighted switches and seems to make the wiring process simpler, hence the inclination to use it. Wondering if the powerboard adds any value, other than the lighted switch, which I guess I can add other wise as well, to the electrical system or should I just dump it and keep it simple with the Z19RB? Thanks Hari ________________________________ Message 4 _____________________________________ Time: 12:40:09 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Relays At 22:28 2015-03-30, you wrote: I will try one more time. Not sure why my message got through without any text. Putting the signal relay into a backshell seems like an interesting project I would like to try. Are there any d-sub backshells that are better suited to stuffing the relay into? I have looked some electrical catalogs for a mounting bracket like you describe. I take it it is a roll your own. And finally would you solder wire to the relay and use pins into the d-sub? Good for you . . . The legacy DSub shells have internal dimensions that closely mimic connectors themselves. The D15 backshells I use have internal 'thickness' heights on the order of 0.45" The relay you choose must have at least one dimension equal to or less than the internal height of the shell. If you like, I can mail you a shell and bracket. The connectors and hardware are prolific. Relays too. . . there's probalby 100 parts in the Digikey catalog suited you task. First crack at a search Emacs! http://tinyurl.com/p3f3cbh A surface mount version is good . . . you might have to cut pins off anyhow. Neat doesn't count Use solder cup connector and 24 or 26 awg wire. Solid wire is okay . . . after you've check it for functionality, you'll pot it with hot-glue. Let me know if you want the parts. Bob . . . ________________________________ Message 5 _____________________________________ Time: 02:10:32 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: BMA Powerboard with Z19RB At 12:46 2015-03-31, you wrote: Hello Group I happen to acquire a Blue Mountain Avionics Powerboard along with an EFIS purchase and contemplating incorporating this in the Z19RB on my Bearhawk. The Powerboard came with lighted switches and seems to make the wiring process simpler, hence the inclination to use it. Wondering if the powerboard adds any value, other than the lighted switch, which I guess I can add other wise as well, to the electrical system or should I just dump it and keep it simple with the Z19RB? Thanks Hari Thanks a long story my friend. But first, indulge us a bit . . . what kind of EFIS system came with the Power Board? Tell us more about your project: Engine, fuel system, ignition system, number and sizes of proposed alternators and how do you plan to use this airplane? Finally, why Z-19? Bob . . . ________________________________ Message 6 _____________________________________ Time: 05:50:26 PM PST US From: Kelly McMullen Subject: Re: AeroElectric-List: BMA Powerboard with Z19RB Also be aware that Blue Mountain is long out of business after a number of very shakey years prior to the collapse. So anything that is Blue Mountain design will be limited to generic electronic parts for repair. On 3/31/2015 2:09 PM, Robert L. Nuckolls, III wrote: > > > At 12:46 2015-03-31, you wrote: > Hello Group > > I happen to acquire a Blue Mountain Avionics Powerboard along with an > EFIS purchase and contemplating incorporating this in the Z19RB on my > Bearhawk. The Powerboard came with lighted switches and seems to make > the wiring process simpler, hence the inclination to use it. > Wondering if the powerboard adds any value, other than the lighted > switch, which I guess I can add other wise as well, to the electrical > system or should I just dump it and keep it simple with the Z19RB? > > Thanks > Hari > > Thanks a long story my friend. But first, indulge us a > bit . . . what kind of EFIS system came with the Power > Board? Tell us more about your project: > > Engine, fuel system, ignition system, number and sizes > of proposed alternators and how do you plan to use this > airplane? Finally, why Z-19? > > > Bob . . . > > ________________________________ Message 7 _____________________________________ Time: 08:26:37 PM PST US Subject: Re: AeroElectric-List: BMA Powerboard with Z19RB From: Hariharan Gopalan Thanks Bob, ever so grateful for such an amazing resource of knowledge and experience, humbly bow down :) The project is a 4 place bearhawk with an Eggenfellner 3.0 L Subaru EZ30 fuel injected engine. It has an SDS EFI and one 60A alternator. Since the engine is an electrically dependent engine, Z19 seemed to be the best. Though I am not IFR certified, eventually plan to fly IFR. I am aware that BMA is out of business, but considering the price at which I bought the package consisting of an 8" EFIS, 5" EFIS, the power board, auto pilot servos and the engine pod, it made sense in dollar terms to take a risk. The EFIS was practically new and I bench tested everything. Also, know of a few people who are happily using the same without any problems for several years. Other than the EFIS, I have acquired the following avionics: 1. GTX 330 2. SL30 3. Microair COM (backup) Eagerly looking forward to words of wisdom from this enlightened group. Thanks Hari On Tue, Mar 31, 2015 at 8:48 PM, Kelly McMullen wrote : > kellym@aviating.com> > > Also be aware that Blue Mountain is long out of business after a number o f > very shakey years prior to the collapse. > So anything that is Blue Mountain design will be limited to generic > electronic parts for repair. > > > On 3/31/2015 2:09 PM, Robert L. Nuckolls, III wrote: > >> nuckolls.bob@aeroelectric.com> >> >> At 12:46 2015-03-31, you wrote: >> Hello Group >> >> I happen to acquire a Blue Mountain Avionics Powerboard along with an >> EFIS purchase and contemplating incorporating this in the Z19RB on my >> Bearhawk. The Powerboard came with lighted switches and seems to make th e >> wiring process simpler, hence the inclination to use it.=C3=82 Wonderin g if the >> powerboard adds any value, other than the lighted switch, which I guess I >> can add other wise as well, to the electrical system or should I just du mp >> it and keep it simple with the Z19RB? >> >> Thanks >> Hari >> >> Thanks a long story my friend. But first, indulge us a >> bit . . . what kind of EFIS system came with the Power >> Board? Tell us more about your project: >> >> Engine, fuel system, ignition system, number and sizes >> of proposed alternators and how do you plan to use this >> airplane? Finally, why Z-19? >> >> >> >> >> 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.