---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 06/13/13: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:36 AM - Using the OVM as a trigger for a hard disconnect of the B lead (Bob Verwey) 2. 03:12 AM - Re: Bob's living in the future! (James Kilford) 3. 04:38 AM - Hanger Antenna (Mark Banus) 4. 05:43 AM - Re: Hanger Antenna (Robert L. Nuckolls, III) 5. 05:44 AM - Re: Using the OVM as a trigger for a hard disconnect of the B lead (Robert L. Nuckolls, III) 6. 05:56 AM - Re: Using the OVM as a trigger for a hard disconnect of the B lead (Bob Verwey) 7. 06:18 AM - Re: Hanger Antenna (Christopher Cee Stone) 8. 06:30 AM - Re: Hanger Antenna (Jay Hyde) 9. 07:54 AM - Re: Hanger Antenna (Robert L. Nuckolls, III) 10. 08:02 AM - Re: Hanger Antenna (Bill Putney) 11. 11:27 AM - Re: Hanger Antenna (Robert L. Nuckolls, III) 12. 11:34 AM - Re: Hanger Antenna (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 01:36:46 AM PST US Subject: AeroElectric-List: Using the OVM as a trigger for a hard disconnect of the B lead From: Bob Verwey Listers, With the internally regulated alternator scenario, in the event of a voltage spike or alternator runaway, what to do? What about a master type relay on the B lead that is disconnected by the OVM? Not a very clean solution, but is it doable? Best... Bob Verwey ________________________________ Message 2 _____________________________________ Time: 03:12:17 AM PST US Subject: Re: AeroElectric-List: Bob's living in the future! From: James Kilford Note how he doesn't actually deny the existence of the time machine... but deftly side-steps the issue! I'm keeping my eye on the Aeroelectric store, just in case the TM-1 appears... On 13 June 2013 02:02, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > nuckolls.bob@aeroelectric.com**> > > > At 05:43 PM 6/12/2013, you wrote: > >> >> Hey Bob, >> >> I notice your emails are arriving a day in the future... have you >> mastered the time machine, or is your computer confused about the date? :-) >> > > Thanks! I'm putting 90% done and 90% to go on setting > up a new computer. My ol' P4 machine was getting long > in the tooth . . . nearly 10 years old. I'm planing some > video production and thought it would be nice to have > a bit more byte-thrashing snort. Picked up a dual-core, > 3.2G machine with lots of RAM for $150 delivered to my > door (aint eBay wunderful?). Put a dual screen video card > in it and I'm really enjoying the up-tick in responsiveness. > > Now I'm finding out how 'nice to have' bits of software > still need to be chased down and installed. Got the > date fixed! As Eric noted a few days ago, the advances > in video hardware are amazing. The stuff I've acquired > new to my desk is a generation or more old and STILL > of astounding value and capability . . . and dirt cheap. > > > Bob . . . > > ________________________________ Message 3 _____________________________________ Time: 04:38:56 AM PST US From: Mark Banus Subject: AeroElectric-List: Hanger Antenna Bob, I was wondering if there is an antenna type that I can install on the exterior of my hanger and wire it into the hanger that will provide signal to my FM music radio TV, and VHF handheld. I presently have antennas for each internally mounted inside the hanger. They work fine until I close the hanger door. If the outside hanger antenna had a "repeater" inside I think it would work. Is there such a device? I want to minimize the number of holes I put in the hanger wall. TNX Mark Banus ________________________________ Message 4 _____________________________________ Time: 05:43:57 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Hanger Antenna At 06:38 AM 6/13/2013, you wrote: >Bob, >I was wondering if there is an antenna type that I can install on >the exterior of my hanger and wire it into the hanger that will >provide signal to my FM music radio TV, and VHF handheld. I >presently have antennas for each internally mounted inside the >hanger. They work fine until I close the hanger door. If the >outside hanger antenna had a "repeater" inside I think it would >work. Is there such a device? I want to minimize the number of >holes I put in the hanger wall. >TNX >Mark Banus I presume you're willing to use only one service at a time. I.e. you don't need to watch tv and listen to the hand-held at the same time. There are some effective, broadband antennas most notable of which is called the 'discone'. One example is offered here http://tinyurl.com/54fk You can build these things pretty easily. It just depends on how much your time is worth. If you're inclined to hammer one out yourself, consider http://tinyurl.com/kc9ruge The discone is not an efficient antenna but it's performance over a broad range of frequencies is the selling point. If your TV/FM/VHF signals are not 'fringe' levels, the discone is a good option. Bob . . . ________________________________ Message 5 _____________________________________ Time: 05:44:38 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Using the OVM as a trigger for a hard disconnect of the B lead At 03:35 AM 6/13/2013, you wrote: >Listers, > >With the internally regulated alternator scenario, in the event of a >voltage spike or alternator runaway, what to do? >What about a master type relay on the B lead that is disconnected by the OVM? > >Not a very clean solution, but is it doable? See figure Z-24 in the book. Bob . . . ________________________________ Message 6 _____________________________________ Time: 05:56:35 AM PST US Subject: Re: AeroElectric-List: Using the OVM as a trigger for a hard disconnect of the B lead From: Bob Verwey Thanks Bob, I was reminded by Jay Hyde that you have covered this......as usual, one does not pay much attention until it's in your face! Best Bob Verwey On 13 June 2013 14:44, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > nuckolls.bob@aeroelectric.com**> > > At 03:35 AM 6/13/2013, you wrote: > >> Listers, >> >> With the internally regulated alternator scenario, in the event of a >> voltage spike or alternator runaway, what to do? >> What about a master type relay on the B lead that is disconnected by the >> OVM? >> >> Not a very clean solution, but is it doable? >> > > See figure Z-24 in the book. > > > Bob . . . > > ________________________________ Message 7 _____________________________________ Time: 06:18:35 AM PST US Subject: Re: AeroElectric-List: Hanger Antenna From: Christopher Cee Stone Mark... Jim Weir at RST Engineering has a dipole base station kit that works very well for FM radio and VHF com. You can build it to whatever center frequency suits you, typically 108-130 Mhz. I have built a couple and they work very well. They do require a lead-in of 50 ohm coax. from there you can use a splitter for VHF com radio and FM radio (use a balun to connect coax to twin-lead). TV is another antenna as the VHF channels are centered around 75 Mhz. http://www.rst-engr.com/rst/catalog/base_station_antenna.html Chris Stone RV-8 Newberg, OR > > At 06:38 AM 6/13/2013, you wrote: > >> Bob, >> I was wondering if there is an antenna type that I can install on the >> exterior of my hanger and wire it into the hanger that will provide signal >> to my FM music radio TV, and VHF handheld. I presently have antennas for >> each internally mounted inside the hanger. They work fine until I close >> the hanger door. If the outside hanger antenna had a "repeater" inside I >> think it would work. Is there such a device? I want to minimize the number >> of holes I put in the hanger wall. >> TNX >> Mark Banus >> > > I presume you're willing to use only one service > at a time. I.e. you don't need to watch tv and > listen to the hand-held at the same time. > > There are some effective, broadband antennas most > notable of which is called the 'discone'. One > example is offered here > > http://tinyurl.com/54fk > > You can build these things pretty easily. It just > depends on how much your time is worth. If you're > inclined to hammer one out yourself, consider > > http://tinyurl.com/kc9ruge > > The discone is not an efficient antenna but it's > performance over a broad range of frequencies is > the selling point. If your TV/FM/VHF signals are > not 'fringe' levels, the discone is a good option. > > Bob . . . > > ________________________________ Message 8 _____________________________________ Time: 06:30:09 AM PST US From: "Jay Hyde" Subject: RE: AeroElectric-List: Hanger Antenna Wow- that practical antenna design document contains a wealth of information; thanks for the link Bob. Johannesburg Jay -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: 13 June 2013 02:43 PM Subject: Re: AeroElectric-List: Hanger Antenna --> At 06:38 AM 6/13/2013, you wrote: >Bob, >I was wondering if there is an antenna type that I can install on the >exterior of my hanger and wire it into the hanger that will provide >signal to my FM music radio TV, and VHF handheld. I presently have >antennas for each internally mounted inside the hanger. They work fine >until I close the hanger door. If the outside hanger antenna had a >"repeater" inside I think it would work. Is there such a device? I >want to minimize the number of holes I put in the hanger wall. >TNX >Mark Banus I presume you're willing to use only one service at a time. I.e. you don't need to watch tv and listen to the hand-held at the same time. There are some effective, broadband antennas most notable of which is called the 'discone'. One example is offered here http://tinyurl.com/54fk You can build these things pretty easily. It just depends on how much your time is worth. If you're inclined to hammer one out yourself, consider http://tinyurl.com/kc9ruge The discone is not an efficient antenna but it's performance over a broad range of frequencies is the selling point. If your TV/FM/VHF signals are not 'fringe' levels, the discone is a good option. Bob . . . ________________________________ Message 9 _____________________________________ Time: 07:54:10 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Hanger Antenna At 08:18 AM 6/13/2013, you wrote: >Mark... > >Jim Weir at RST Engineering has a dipole base >station kit that works very well for FM radio >and VHF com. You can build it to whatever >center frequency suits you, typically 108-130 >Mhz. I have built a couple and they work very >well. They do require a lead-in of 50 ohm >coax. from there you can use a splitter for >VHF com radio and FM radio (use a balun to connect coax to twin-lead). >TV is another antenna as the VHF channels are centered around 75 Mhz. The off-air VHF tv channels run 59 to 88 Mhz for ch 2-6 and then skip over the fm broadcast, vhf aviation, ham radio and pubic service frequencies to pick up at 175- 216 Mhz for ch 7-13. The dipole Jim describes is probably no less efficient at the extremes of your range of interest than the discone. Bob . . . ________________________________ Message 10 ____________________________________ Time: 08:02:35 AM PST US From: Bill Putney Subject: Re: AeroElectric-List: Hanger Antenna But since the digital TV conversion, most of the TV channels are now on UHF (even if they show up as "Channel 2" on your set) you need some antenna elements in the 500-800 MHz range too. At least in the Seattle/Tacoma area there are only 2 VHF TV signals left even though we have stations 2, 4, 5, 7, 9, 13 (plus a bunch of UHF). Bill On 6/13/13 6:18 AM, Christopher Cee Stone wrote: > Mark... > > Jim Weir at RST Engineering has a dipole base station kit that works > very well for FM radio and VHF com. You can build it to whatever > center frequency suits you, typically 108-130 Mhz. I have built a > couple and they work very well. They do require a lead-in of 50 ohm > coax. from there you can use a splitter for VHF com radio and FM > radio (use a balun to connect coax to twin-lead). > TV is another antenna as the VHF channels are centered around 75 Mhz. > > http://www.rst-engr.com/rst/catalog/base_station_antenna.html > > > Chris Stone > RV-8 > Newberg, OR > > > At 06:38 AM 6/13/2013, you wrote: > > Bob, > I was wondering if there is an antenna type that I can install > on the exterior of my hanger and wire it into the hanger that > will provide signal to my FM music radio TV, and VHF handheld. > I presently have antennas for each internally mounted inside > the hanger. They work fine until I close the hanger door. If > the outside hanger antenna had a "repeater" inside I think it > would work. Is there such a device? I want to minimize the > number of holes I put in the hanger wall. > TNX > Mark Banus > > > I presume you're willing to use only one service > at a time. I.e. you don't need to watch tv and > listen to the hand-held at the same time. > > There are some effective, broadband antennas most > notable of which is called the 'discone'. One > example is offered here > > http://tinyurl.com/54fk > > You can build these things pretty easily. It just > depends on how much your time is worth. If you're > inclined to hammer one out yourself, consider > > http://tinyurl.com/kc9ruge > > The discone is not an efficient antenna but it's > performance over a broad range of frequencies is > the selling point. If your TV/FM/VHF signals are > not 'fringe' levels, the discone is a good option. > > Bob . . . > > > * > > > * ________________________________ Message 11 ____________________________________ Time: 11:27:01 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Hanger Antenna At 10:02 AM 6/13/2013, you wrote: >But since the digital TV conversion, most of the TV channels are now >on UHF (even if they show up as "Channel 2" on your set) you need >some antenna elements in the 500-800 MHz range too. At least in the >Seattle/Tacoma area there are only 2 VHF TV signals left even though >we have stations 2, 4, 5, 7, 9, 13 (plus a bunch of UHF). > >Bill Interesting. I'd not kept up with those changes. In that case, I think the discone cut for a lower frequency on the order of 75 MHz is called for. That would capture the FM and aviation frequencies with some efficiency with pretty decent coverage in the upper reaches. Bob . . . ________________________________ Message 12 ____________________________________ Time: 11:34:40 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Hanger Antenna Plan C . . . As long as you don't want to use the antenna for talking with your hand held, there's another option for a broad spectrum receive only antenna. http://tinyurl.com/kex8u4k 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.