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"Arfa Daily" <arfa.daily@ntlworld.com>: Oct 28 02:05AM "Danny D." <dannydiamico@gmail.com> wrote in message news:m2mkq5$c0c$7@dont-email.me...   > BTW, here's a view from below today, when I dropped my glasses > and had to climb down the steep hill to retrieve them.   > https://c4.staticflickr.com/4/3943/15645979325_89a8481615_b.jpg   Pardon me for a silly suggestion but ...   ... in view of the - how shall we put it - challenging ? - nature of the site, wouldn't it be a good idea to have your specs on one of those strings around your neck ? And tools like hammers, roped to your belt ?   Arfa

"Danny D." <dannydiamico@gmail.com>: Oct 28 03:56AM dpb wrote, on Thu, 23 Oct 2014 08:13:06 -0500:   > ERRATUM: I forgot to divide the cable limit by the two above > -- the actual limit per cable is (optimistically) as used by > your friend 14000, not 28000.   Here's the response from the neighbor building the deck... https://c4.staticflickr.com/4/3953/15460990220_5b1f28763d_b.jpg   The 3/8" steel suspension cable is a good deal higher than 10 feet above the deck at the ends. Currently that 3/8" steel cable is anchored at a tree about 25 feet above the deck at the beginning end of the deck.   Also, the 100 foot final length of the deck was a guess that is probably a bit high, where perhaps 80 feet might be closer to the final length. So the 11 degrees may no longer still be the result of the calculations.   Looking at the photos, the angle of the cable looks like around 30 degrees to me. If the height of the suspension cable above the deck is 25 feet, and the length of the deck is 80 feet, we now have 32 degrees.   Using his tension formula, we get a tension of 4,718 pounds. So, I believe, that means the 3/8" suspension cable can support almost six times what we are assuming.   While the deck was originally supposed to be free floating, since we decided to anchor the close end of the deck on the dirt path (so that people could just step onto the deck from the path), that end of the deck is now supported by the two fence posts, so half of its weight goes away.   If, additionally, we add another fence post, in a "T" shape support, at the end of the first 16-foot-long section, then the weight of that first 16-foot-long section goes away completely, as does half the weight of the next 16-foot-long section. And we still have the option of supporting the other half by attaching it to the small redwood trees, along with half of the third section.   If we really did get to 28,000 pounds of tension, the trees would pull closer together, reducing the distance, and making the angle steeper. It thus gets asymptotically harder to actually put that much tension on the cable.   The treehouse itself, when it's built, will be supported mostly by the redwood trees.

"Danny D." <dannydiamico@gmail.com>: Oct 28 04:20AM Arfa Daily wrote, on Tue, 28 Oct 2014 02:05:05 +0000:   > ... in view of the - how shall we put it - challenging ? - nature of the > site, wouldn't it be a good idea to have your specs on one of those > strings around your neck ? And tools like hammers, roped to your belt ?   That's a good suggestion, as we have tools all over the place! https://c4.staticflickr.com/4/3948/15647694665_4bc6370a50_c.jpg   Usually, we tie in when we're out on the cable, with no firm footing: https://c4.staticflickr.com/4/3947/15461051649_0ffee9cb37_b.jpg   And, we tie in when we're working on the steep slope below the deck: https://c4.staticflickr.com/4/3950/15461715927_30b042e8a8_b.jpg   The harnesses we use are the same ones we use for climbing the hills: https://c2.staticflickr.com/6/5602/15026942014_d22eb1ee32_b.jpg   Here's my setup, for example, as I was digging the fence post holes: https://c4.staticflickr.com/4/3950/15461715927_30b042e8a8_b.jpg   And, here's what I used when I had to double-line rappel downslope: https://c4.staticflickr.com/4/3932/15648510152_b903b1b22c_c.jpg   Even so, we've had a few of the typical gotchas, from dropping the spool of wire (where it rolled a hundred or so feet downhill before getting wedge under a fallen tree) to the inevitable search for missing glasses and hammers.   Such is the nature of working in the trees...

"Danny D." <dannydiamico@gmail.com>: Oct 28 04:31AM dpb wrote, on Mon, 27 Oct 2014 21:06:58 -0500:   >> https://c4.staticflickr.com/4/3943/15645979325_89a8481615_b.jpg > Where are the supporting cables in the picture--on top or > just hidden by the view?   All the supporting cables are above the deck.   It's a bit hard to see in that picture from below today, but the 3/8" steel cable is glinting in the sunlight a few feet *above* the deck. https://c4.staticflickr.com/4/3943/15645979325_89a8481615_b.jpg   The deck is not attached to *anything* other than the cable on the free- floating end, as we build it out. In fact, while it's hard to tell from the angle of this picture, but the end of the second 16-foot-long section is still shy of the leftmost redwood by about a foot, and maybe it's two feet shy of the right-most redwood tree: https://c2.staticflickr.com/6/5600/15648508432_8ea7136264_c.jpg   Here is a picture taken earlier in the day, before we planked the second 16-foot-long section, showing how the 10-foot-wide deck is suspended from the steel cables (this is the second of the two 16-foot-long sections): https://c2.staticflickr.com/6/5601/15026940484_8853aa5e3e_c.jpg

"Danny D." <dannydiamico@gmail.com>: Oct 28 04:37AM dpb wrote, on Mon, 27 Oct 2014 21:06:58 -0500:   > plus how well their root systems are capable of that additional > continuous load, particularly when the ground gets saturated when it > finally does rain again...   This is a good point, in that sometimes it pours out here, and this is a steep slope, so the runoff could be great.   We just had a half inch of rain over the weekend, and this is a shot of the cables and the people on the decking (the dog won't go on the deck): https://c4.staticflickr.com/4/3953/15460990220_5b1f28763d_b.jpg   We're still about a foot from the left-most redwood here, and about two feet from the right-most redwood, so we "can" attach to them (if decided) with the third 16-foot deck section: https://c2.staticflickr.com/6/5600/15648508432_8ea7136264_c.jpg

"Arfa Daily" <arfa.daily@ntlworld.com>: Oct 28 09:53AM "Danny D." <dannydiamico@gmail.com> wrote in message news:m2n5iq$c0c$26@dont-email.me... >> strings around your neck ? And tools like hammers, roped to your belt ?   > That's a good suggestion, as we have tools all over the place! > https://c4.staticflickr.com/4/3948/15647694665_4bc6370a50_c.jpg     Boy oh boy ... I thought I was making a bit of a silly suggestion there ...       > Usually, we tie in when we're out on the cable, with no firm footing: > https://c4.staticflickr.com/4/3947/15461051649_0ffee9cb37_b.jpg     Work clothes ?       > And, we tie in when we're working on the steep slope below the deck: > https://c4.staticflickr.com/4/3950/15461715927_30b042e8a8_b.jpg     That's concrete, yes ? Looks a little lean on the mix ... ?     > getting wedge under a fallen tree) to the inevitable search for missing > glasses and hammers.   > Such is the nature of working in the trees...     Hmmmm ...   Arfa

"Arfa Daily" <arfa.daily@ntlworld.com>: Oct 28 09:57AM "Danny D." <dannydiamico@gmail.com> wrote in message news:m2n6ir$c0c$28@dont-email.me... > steep slope, so the runoff could be great.   > We just had a half inch of rain over the weekend, and this is a shot of > the cables and the people on the decking (the dog won't go on the deck):   Animals have a sort of 'sixth sense' about this sort of thing. Perhaps this should tell you something ... d:-}   Arfa

John Robertson <spam@flippers.com>: Oct 28 09:38AM -0700 On 10/28/2014, 2:57 AM, Arfa Daily wrote:   > Animals have a sort of 'sixth sense' about this sort of thing. Perhaps > this should tell you something ... d:-}   > Arfa   The dog is the only one paying attention to load factors.   John :-#(#   -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."

"Danny D." <dannydiamico@gmail.com>: Oct 28 04:46PM Arfa Daily wrote, on Tue, 28 Oct 2014 09:53:11 +0000:   >> https://c4.staticflickr.com/4/3947/15461051649_0ffee9cb37_b.jpg > Work clothes ?   We're all retired, and, getting a bit complacent, so, we tend not to own (real) work clothes.... :)   But, we're getting real good at buying army surplus static line! https://c4.staticflickr.com/8/7474/15627944646_f7aaff11cc_b.jpg   Maybe we should pick up a pair of these Ghillies as fitting work clothes, since we're always hanging around in the trees: https://c4.staticflickr.com/4/3943/15465541258_e2d8aa3fd1_b.jpg

N_Cook <diverse@tcp.co.uk>: Oct 28 03:35PM On 27/10/2014 21:22, Helmut Wabnig wrote:   > Contact spray > http://www.youtube.com/watch?v=q1BxYWlT2yc   > w.   At least that is a "do no harm" activity.   Uses 4x 10.7M ceramic resonators, the resistance associated with 2 of them , is from the rest of the circuitry Looks like it was a retrofit electrolytic to a 9.4V line, with a large component side solder blob that had corrossion product that touched a bare bridge wire from the mute line of the main control IC.

Phil Allison <pallison49@gmail.com>: Oct 27 07:53PM -0700 David Platt wrote:   > if you're tuned away from it by twice the intermediate frequency > (e.g. by 21.4 MHz) - a second "image" of the station appears on > the dial.     ** Not really possible since the FM band is only 20MHz wide.   For a low side local osc:   88.1-10.7 = 77.4 = lowest local osc f   77.4+20.0 = 97.4 = highest local osc f   97.4+10.7 = 108.1 = higher f than any station.     > and create "spurious" signals located on either side of their true > locations on the dial. These spur signals will often be noisy and > distorted.   ** Plus contain the audio modulation of both signals.   Be a real pain if the two FM carriers differed by 10.7MHz ...   FYI:   The 2nd harmonic of strong carriers can intermod with the 2nd harmonic of the local osc to produce a new signal on the dial.   In this case, the FM deviation is doubled so may be distorted by the detector.     ... Phil

dave <ricketzz@earthlink.net>: Oct 28 05:15AM -0700 On 10/27/2014 01:48 PM, whit3rd wrote:   > Alternately, one can attenuate (filter) either the interfering FM station or the (presumably > AM) difference-frequency station: this can be done with a lossy antenna+load > placed near your radio, so can apply without access to antenna terminals.   I used to work on Radio Row in Houston. One day the FCC came to visit KILT FM 100.1 because they were causing squeals on the aeronautical band. It wasn't any of the station's pro gear making the interference; it was an old console FM receiver in the station lobby. 100.1 + 21.4 = 121.5. Radio row was on the direct approach to Hobby Airport or this old mis-aligned radio would have never been busted.

Michael Black <et472@ncf.ca>: Oct 28 11:40AM -0400 On Tue, 28 Oct 2014, dave wrote:   > FM receiver in the station lobby. 100.1 + 21.4 = 121.5. Radio row was on the > direct approach to Hobby Airport or this old mis-aligned radio would have > never been busted.   I thought that was some of the basis of the ban on electronic devices on airplanes.   Certainly there is folklore that when AM/FM transistor portables became cheap and available, suddenly people were using them on airplanes, and that did or could have caused interference, precisely because the local oscillator radiated and in the aircraft band.   It's murky whether that was the specific cause of the rule or not, and probably made murkier since it's been forty years since I read about this.   Michael

Ricardo Abreu <meus.registos.online@gmail.com>: Oct 28 05:09AM -0700 Nope, I don't own an HV probe.

"Arfa Daily" <arfa.daily@ntlworld.com>: Oct 24 01:26AM +0100 "Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message news:qKd2w.526388$_u1.307583@fx30.am4...   > (Mind you, I doubt this is the IC in question here, so this is kind of OT)   > Gareth.   TDA7293 is indeed the correct package, so it might be. There is actually an electrolytic on the opposite end of the board that has also blown apart so badly that you can't see what value it originally was. The IC has burnt pins and print as it went up, and deposited a fair bit of soot around. I might get the IC out tomorrow and clean up a bit and see if it is actually going to be worth spending the time on. It is basically a piece of Chinese garbage, and probably not worth very much in the first place. It certainly isn't in very good condition, and doesn't look like it has been very well looked after, so it might be time to replace it anyway ...   Arfa

John Robertson <spam@flippers.com>: Oct 23 05:01PM -0700 On 10/23/2014, 12:53 PM, bud-- wrote:   >> Slowest Opening. >> Most damage to contacts.   > http://web.archive.org/web/20110104003731/http://relays.tycoelectronics.com/appnotes/app_pdfs/13c3264.pdf   This is very interesting, it raises points I had never considered such as the momentary current flow through the diode and coil, and how that can stress other parts. The two articles are good reading!   It explains why (in my field of pinball repair) manufacturers stopped putting suppression diodes on the coils and instead put them in place to protect the driver devices (transistors/Mosfets, etc.).   Thanks for bringing this topic up!   Do note that both articles say you HAVE to protect the driver device from the back EMF!!   John :-#)#   -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."

N_Cook <diverse@tcp.co.uk>: Oct 22 09:06AM +0100 bit more tech stuff http://aviationweek.com/technology/skunk-works-reveals-compact-fusion-reactor-details   So superconducting magnets next to superhot plasma, just the insulation would be the size of a truck

Reinhard Zwirner <reinhard.zwirner@t-online.de>: Oct 21 10:04PM +0200 > Does it have any battery which after a few years needs replacement?   > Any chance I can find out what battery Curren M8039B uses so I only open it once?   > And see what's inside (schematics) before I risk breaking it?   Hi,   I don't know such piezo-type of watch.   On the other hand I own a watch which contains an electromagnetic generator which is driven by an automatic-type rotor. A supercap is charged by that generator and serves as power supply for a quartz movement. With a fully charged supercap the watch will work a few days without arm movement.   <http://www.seikowatches.com/world/technology/kinetic/index.html>   HTH   Reinhard

"Arfa Daily" <arfa.daily@ntlworld.com>: Oct 28 01:58AM "micky" <NONONOmisc07@bigfoot.com> wrote in message news:vfts4a5q7h9aq760903n59seci0l5530kl@4ax.com... > is not it.   > I don't know what's wrong with them sometimes. They should have known > not to get rid of it.   You can force the search to only include sites with specific words by enclosing them within double quotes i.e.   "Sharp" "free" "TV" "schematics"   returns only pages with those specific terms. There are better examples when you are engaged in an actual search, but that will do to illustrate the principle.   The + sign now seems to be something to do with returning Google+ pages. I hadn't realised that had changed ...   Arfa

Oren <Oren@127.0.0.1>: Oct 27 06:31PM -0700 On Tue, 28 Oct 2014 00:39:33 +0000 (UTC), "Danny D." >for all kids, especially the kind of kid who likes to do it his own >way, and the ones who don't like sitting down at a desk for 180 days >in a row.   I was told I would be drafted and it did happen, I went early by unsung my draft notice. IOW I enjoyed some time before any chance that I would killed in a war that was controlled by politicians.   I went back to school when I later became interested :)

"David Farber" <farberbear.unspam@aol.com>: Oct 27 11:06AM -0700 This Canon ImageClass D660 printer/scanner/fax was subjected to a power surge. An open neutral line on the customer's street knocked out a lot of equipment in a lot of homes. I was able to locate the damaged power supply board by following the fine aroma of charred components. The result of the damage was that it just needed a few capacitors and a T4A fuse. I powered it back up and was able to print a test page ok. However, before I proceed putting this all back together to check everything else, I noticed that there's an l.e.d. on the system control(?) board which has an amber l.e.d. that continuously blinks like a turn signal. http://webpages.charter.net/mrfixiter/Repair/Blinking-led.jpg   Does anyone know if this is normal?   Thanks for your reply. -- David Farber Los Osos, CA

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