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Jon Elson <jmelson@wustl.edu>: Nov 08 02:45PM -0600 > Questions:   > a) What is the actual resistance in ohms of the OEM fan and the > replacement fan if measured across the contacts.   Meaningless. These fans have a commutation circuit and some FETs in them, so you will not read anything that resembles a resistance on them.   Jon

"pfjw@aol.com" <pfjw@aol.com>: Nov 08 12:55PM -0800 On Tuesday, November 8, 2016 at 3:42:12 PM UTC-5, Jon Elson wrote:   > Meaningless. These fans have a commutation circuit and some FETs in them, > so you will not read anything that resembles a resistance on them.   > Jon   No. The two that work ohm out at ~10 meg. The two that do not ohm out at ~20K. So, yes, you are seeing 'resistance' on them. Clearly "these fans" are not created equal.   Peter Wieck Melrose Park, PA

N_Cook <diverse@tcp.co.uk>: Nov 09 02:43PM On 08/11/2016 12:21, N_Cook wrote: > The fan drive starts in slow speed mode, no confirmation full speed for > 2 seconds at startup, which I like to see on such amps , but I don't > think is built-in to these amps   Curiouser and curioser. I found a pretty knackered , high impedance, 12V 0.16A fan and that worked fine. Removed fan and placed a pot across and dropped down to 10K , eventuallly, and no protect mode. Tried fixed 8K2 and no protect mode. Put an impedance "break" as far as DVM-R is concerned, of a Darlington BDX47 and 10K bias R, so DVM-R across the new low impedance fan I was hoping to place in there now measuring 2M . Dropping 0.9V on bench ps. But still triggered protect mode of SMPS. So not simply resistance problem. SMPS is perfectly happy with 78 &79 V regs off those SMPS Tx taps, but the fan supply is taken off before a choke, significant?

N_Cook <diverse@tcp.co.uk>: Nov 09 03:09PM I was mistaken , fan supply is downstream of the choke, same point as input to a 7812. I tried a ferrite ring choke in the 10K resistance fan line, but same protect mode scenario

"Michael A. Terrell" <mike.terrell@earthlink.net>: Nov 09 09:55AM -0500 >> How about using life sized scarecrow, with a leftover 'Hillary' >> Halloween mask? ;-)   > True enough. Deer are rather stupid and might actually be afraid of Hillary. Whereas a Trump mask would definitely attract them - also any sheep, goats, rabbits and other herd animals in the area. Certainly any such unwilling or unable to think for themselves.   They apparently think well enough not to vote for Hillary.     -- Never piss off an Engineer!   They don't get mad.   They don't get even.   They go for over unity! ;-)

Jeff Liebermann <jeffl@cruzio.com>: Nov 08 09:13AM -0800 On Tue, 8 Nov 2016 05:16:23 -0800 (PST), Tim R <timothy42b@aol.com> wrote:   >Is it broken, or are they supposed to do that?   Kinda sounds like you're dealing with a bad solder connection or loose connector. Unplug it, tear apart the speed controller, and look for bad solder connections or loose connectors. If you don't feel safe with electricity, kindly resist the temptation to apply power and wiggle the wires.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Adrian Caspersz <email@here.invalid>: Nov 09 10:21AM On 08/11/16 13:16, Tim R wrote:   > I expected you could use a speed control to ramp it up and down while > it's running but this one doesn't function that way. Is it broken, > or are they supposed to do that?   Mechanical?   If it is the type with an intermediate pulley, take both belts off and clean/lubricate the pulley shaft.   ALDI Workzone 500w Drill Press unboxing / assembly https://www.youtube.com/watch?v=A6mv4yWklNA   Mine (same as vid) gums up with dirt, the pulley jams on the shaft and the motor stalls. Hasn't got electronic speed control, ye have to move belts.   Great drill, otherwise. Cost me 25 pounds (UK).   -- Adrian C

Tim R <timothy42b@aol.com>: Nov 09 05:05AM -0800 On Wednesday, November 9, 2016 at 5:21:46 AM UTC-5, Adrian Caspersz wrote:   > Great drill, otherwise. Cost me 25 pounds (UK).   > -- > Adrian C   No, not mechanical. No belts, just a motor that speeds up and down incrementally, so I assume some kind of primitive SCR control.

captainvideo462009@gmail.com: Nov 08 01:56PM -0800 > I tried posting something about this in the past but got no response. I'm holing that this time someone might read it who may have a theory as to what could be going on.   > I live in southern New Hampshire and watch OTA TV out of Boston, which is about 60 miles from here. Lately I as well as several other people I know have been experiencing intermittent problems with channel four. While most other channels are presently operating fine, for the past 10 days or so channel 4's signal has been in the toilet. This station, WBZ TV operates on UHF channel 30, runs 825KW, and has an antenna height of 390 meters. By contrast Channel 5, WCVB, operates on UHF channel 20, runs 625 KW, and shares the same tower and has it's antenna at the same height as channel 4's, and we never have any problems with that channel. Could propagation be that much different 60 MHZ apart? What is really weird is that the signal just drops to almost nothing.   > I discussed this with the chief engineer at Channel four and he had no explanation for this. Does anyone have any theories about this? Thanks, Lenny   Here is some background information from my previous posting: (I was thinking "drive" miles when I said that we were 60 miles from Boston). As the crow flies we are about 45. Sorry for that bit of misinformation. The following previous post was when the problem first surfaced.   Sep 21 For the past ten days or so we have been having problems with TV channel 4. This station broadcasts on UHF from Boston Mass. and we are about 45 miles (as the crow flies) from the transmitter. The antenna is an old, but in good condition, very high gain Channel Master 5 foot parabolic which is mounted on a tripod about 6 feet off the roof. There is a mast mounted Winegard GA 8780 preamplifier with a 28 DB UHF section along with a very low noise figure mounted about 2 feet from the antenna. The cable is RG6 Quad which goes into a two way splitter. We have several different receivers, Converter boxes) but the one I use for assessment because it shows signal quality as well as signal strength is a Channel Master 7001. Our elevation is 410 feet and we are surrounded by trees, some deciduous and some pine.   Most of the time, in spite of this not so ideal situation, (location) I can receive the three networks and a few independents. The signal display on the converter shows, as two horizontal bars, "signal quality" and "signal level". On most channels most of the time signal quality is pegged at 100 percent and signal level runs between 45 and 55 percent. Within this window I usually have no problems with reception. As long as signal quality doesn't fold back I usually will get no drop outs. If it should falter excessively though both picture and sound will break up and intermittently freeze. So I'm pretty familiar with what conditions will produce a good signal.   Lately Channel 4 although displaying 54 percent signal level and 100 percent signal quality has had very slight "tearing streaks" going through the picture. If these aberrations only affected the picture we would be able to watch the program. However this problem seems to chop up the sound as well. This makes it impossible to watch a program.   The weather of late has been hot and humid, which is atypical for New England this time of year. I've noticed in the past that during this type of weather we do sometimes lose reception on several channels for a day or two but never this long. I'm just wondering if anyone might have a theory as to what could be happening here. This only seems to affect channel 4, (where all our shows happen to be). Thanks, Lenny   I also corresponded with the chief engineer at WBZ and got this back.   Lenny,     My apologies for the delay in replying.     I don't have a good answer for why your reception has degraded recently. We have not been having any trouble with our transmission systems.     Your installation sounds like a good one, though I think it may be a bit overdone, as a high-gain antenna in combination with 28 dB of amplification is probably more than you need, even at that distance. For comparison, I live 43.1 air miles from the transmit antenna, and I use a Channel Master 4228 8-bay bowtie antenna on the roof of my one-story house, with no amplification. I get full-bore signal into the TV on almost all channels. We have had incidences with viewers who had too much amplification in which they lost WBZ and WFXT, which had the most powerful signals in the Boston market (at the time). They were overdriving their TVs and as a result suffering the loss of the two stations they should have received with the least effort.     Wish I had a more definitive answer…     cid:image001.jpg@01CEC683.AF077500   Robert Yankowitz, CPBE   WBZ-TV WSBK BOSTON   1170 Soldiers Field Road, Boston, MA 02134   Chief Engineer   file:///M:/pmasucc/Work/General%20Info/email-combo%20logos.jpg   o 617 562-5044   c 617 828-1041   f 617 787-7106   www.cbsboston.com   Then I replied back:   Lenny I wish I had answer for why your reception has degraded recently. We have not been having any trouble with our transmission systems.     Your installation sounds like a good one, though I think it may be a bit overdone, as a high-gain antenna in combination with 28 dB of amplification is probably more than you need, even at that distance. For comparison, I live 43.1 air miles from the transmit antenna, and I use a Channel Master 4228 8-bay bowtie antenna on the roof of my one-story house, with no amplification. I get full-bore signal into the TV on almost all channels. We have had incidences with viewers who had too much amplification in which they lost WBZ and WFXT, which had the most powerful signals in the Boston market (at the time). They were overdriving their TVs and as a result suffering the loss of the two stations they should have received with the least effort.     Wish I had a more definitive answer…     cid:image001.jpg@01CEC683.AF077500   Robert Yankowitz, CPBE   WBZ-TV WSBK BOSTON   1170 Soldiers Field Road, Boston, MA 02134   Chief Engineer   file:///M:/pmasucc/Work/General%20Info/email-combo%20logos.jpg   o 617 562-5044   c 617 828-1041   f 617 787-7106   www.cbsboston.com   rbyankowitz@cbs.com   -------- Original message -------- From: Wufoo <no-reply@wufoo.com> Date: 9/21/16 11:00 PM (GMT-05:00) To: CBS Local Site Contact Us <sitecontactus@cbs.com>, "Eich, Julie O" <joeich@boston.cbs.com> Subject: General Information - Boston - [#95913]   Name *   Leonard Stein   Email *   captainvideo462009@gmail.com   Phone Number *   (603) 887-4253   Direct Your Message To CBS Local Staff In... *   Boston   Link (if appropriate)   Please forwaed this to engineering dept.   Comment   For the past ten days or so we have been having problems with TV channel 4. We are located in Chester N.H. about 45 miles (as the crow flies) from the transmitter. The antenna is an old, but in good condition, very high gain Channel Master 5 foot parabolic which is mounted on a tripod about 6 feet off the roof. There is a mast mounted Winegard GA 8780 preamplifier with a 28 DB UHF section along with a very low noise figure mounted about 2 feet from the antenna. The cable is RG6 Quad which goes into a two way splitter. The receiver, (converter box) is a Channel Master 7001. Our elevation is 410 feet and we are surrounded by trees, some deciduous and some pine.   Most of the time, in spite of this not so ideal situation, (location) I can receive the three networks and a few independents. The signal display on the converter shows, as two horizontal bars, "signal quality" and "signal level". On most channels most of the time signal quality is pegged at 100 percent and signal level runs between 45 and 55 percent. Within this window I usually have no problems with reception. As long as signal quality doesn't fold back I usually will get no drop outs. If it should falter excessively though both picture and sound will break up and intermittently freeze. So I'm pretty familiar with what conditions will produce a good signal.   Lately Channel 4 although displaying 54 percent signal level and 100 percent signal quality has had very slight "tearing streaks" going through the picture. If these aberrations only affected the picture we would be able to watch the program. However this problem seems to chop up the sound as well. This makes it impossible to watch a program. I am a TV repair technician and I have never seen this type of choppy sound on either OTA or cable before.   The weather of late has been hot and humid, which is atypical for New England this time of year. I've noticed in the past that during this type of weather we do sometimes lose reception on several channels for a day or two but never this long. I'm just wondering if anyone there might have a theory as to what could be happening here. This only seems to affect channel 4, (where all our shows happen to be). Thanks, Lenny   Reply | Reply to all | Forward | Print | Delete | Show original   Add star Klem Kedidelhopper<captainvideo462009@gmail.com> Sun, Oct 2, 2016 at 3:55 PM To: "Yankowitz, Robert B" <RBYankowitz@cbs.com> Reply | Reply to all | Forward | Print | Delete | Show original Hi Robert   Thank you for getting back to me. One thing that I failed to mention is that this is not a new installation. We put this antenna up about three years ago and it has always seemed to perform well.   I hear what you are saying about overload, and in theory Chester NH is not such a haul from Boston. TV Fool never mentions the use of an amplifier for my location relating to Boston, and I have used that resource a lot to determine whether an antenna job at a certain location would be feasible or not. The preamp though has always seemed to make a substantial difference here as well as throughout town. I had a customer years ago who lived out of town near the top of the mountain that is partially blocking our South West view. He was watching everything from Boston including 10 and 12 from Providence, with rabbit ears. So I've always figured that it must be the foliage and the terrain that's attenuating my signal.   Before digital, for my own house I used separate VHF and UHF antennas. We never needed any help with VHF, but UHF was always a challenge for us. The UHF antenna at the time was an 8 bay. During this period Winegard had just come out with a commercial preamp that had slightly lower gain but boasted an unheard of 1DB noise figure. I had to try this so I ordered one and installed it after the 8 bay. I pointed it towards Boston but channel 50's transmitter in Hudson NH splattered across the entire band. Although having a very hot front end the commercial preamp was not nearly as forgiving of overloads as the 8780. I eventually put a 20 DB trap set for channel 50 in line and that solved the overload problem. However in spite of all this, UHF reception with the 8 bay from Boston was never really very good at our house.   Since as we all know it's not possible to watch a polar bear in a snow storm with digital three years ago I realized that I had to do something. This parabolic which I'm presently using is a 300 ohm antenna which I had liberated from a job about 20 some odd years ago. I had always planned to use it "some day" and it had been sitting in the woods behind my house since. It had a few broken reflectors which I repaired.I looked up the specs recently on this antenna and it seems to beat everything out there. Gain is between 13 to 16 DB, but it's narrow beam width is really where it excels. Early on I had considered that my problem could possibly be multipath, however just turning this antenna a few degrees and signal starts to drop like a rock.   We didn't have cable TV here in Chester until the early 1990's, and back then I used to install quite a few antennas and retrofit existing ones with preamps. I had a nice Sadelco signal meter that tuned up to channel 83. I no longer do antenna work so I don't presently have equipment to measure OTA signals. So now admittedly a lot of this is an educated guess. Back then most consumer equipment particularly antennas were 300 ohms, and since the GA8780's input impedance also was 300 ohms I kind of standardized on this amp for my retrofits as well as new installations. The noise figure was about 3 DB which was the best of the time, beating Channel Master's figure of 5. However the real attraction of this amp was the very forgiving limiter circuit. I never had one overload on me, including those used in installations much higher than mine.   So as you might imagine I've been very frustrated with this problem. However as of five days ago the problem has disappeared. Signal levels and quality as measured on my converter boxes show no difference, and if this was weather related we have had varying degrees of weather through this period as well. We do sometimes experience days at a time where reception is poor for whatever reason but it's always reflected on the signal strength and quality indication on the converter box meter. This was definitely not the case this time though. To the best of my recollection in this past three years this particular type of problem has never happened before.   I do have a theory though that I wanted to suggest. The orientation of my antenna when it is optimized for Boston puts it a few degrees South East of New York City. Do you think that skip conditions were such through this period of time that this could possibly have been CO channel interference from WNBC in New York? As I had previously mentioned no other channels were affected nor have I noticed anything unusual on any of the Amateur frequencies or my low band two way business radio system.   We do occasionally see what I believe must be tropospheric inversion, and we do seem to experience them at different times of the year. During these periods, which typically last up to five days, Boston UHF TV stations that I never can pull in such as 56 and 68 come bombing in, and many times with 90 percent signal strength. Then as mysteriously as they appeared, after a period of time they're gone. This episode however didn't seem to be an inversion, as there were no newcomers in my channel line up through this time.   In 1975 I decided that I wanted to work in broadcasting. I got my First and I was hired as a studio technician for a UHF TV station in Central New York. Much of that work involved translator maintenance. I still recall (although not fondly) those awful cold trips up the mountains when the snowmobile wasn't running to service those miserable things. After that stint I switched careers to military, and then industrial electronics. I took a hard look at my life after that and since I had been repairing TV's from the time I was a teenager I decided to go in for myself. So since 1983 I've operated my own consumer electronics service business. Now I'm semi retired, (whatever that means) and I haven't seen the inside of a TV studio no less a network studio in 45 years. I'm sure much has changed.   I'm sure that you are more than familiar with it than I but I found a rather interesting article on tropospheric propagation on Wikipedia, and there was also if you are interested some propaganda on my antenna.   Thank you very much for trying to help me evaluate this problem. I appreciate the time and trouble you've taken. Very truly yours, Lenny Stein, KC1CPX   https://en.wikipedia.org/wiki/Tropospheric_propagation   http://www.rocketroberts.com/cm4251/cm4251.htm rbyankowitz@cbs.com I wanted to include all the background information before this thread began. Lenny   BTW, here are my coordinates: and although the topo maps said different according to Google my altitude is 115 meters

Allodoxaphobia <knock_yourself_out@example.net>: Nov 09 11:55AM > On Sunday, November 6, 2016 at 7:40:38 PM UTC-5, captainvi...@gmail.com wrote: >> I tried posting something about this in the past but got no response.   More than likely because you're posting from google groups.   * Killfiling google & XXXXbanter.com: jonz.net/ng.htm

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Nov 08 07:48PM The objective is to add a laptop running XP-SP3 to an empty socket on the VM hub.   There are several possible causes - I don't know which one/how many are stopping the gubbins up.   VM may not allow XP on their network, but I've been told any OS should work as long as I have the DCHP settings right - I could do with a hint where to look for that.   Last time I experimented with Linux, it somehow got online without me entering any UN or PW - I think I got those right, but if Linux can sort that out its one point in favour.   I'm aware that Ethernet cables come in straight and crossover configurations. The one on my tower PC obviously works, but I don't know if its any better for the laptop than the one I tried - its a lot of hassle to get at the back of the tower.   Any help would be appreciated to narrow down which cause(s) are stopping things.   Thanks.

Adrian Caspersz <email@here.invalid>: Nov 09 09:24AM On 08/11/16 19:48, Benderthe.evilrobot wrote:   > VM may not allow XP on their network, but I've been told any OS should > work as long as I have the DCHP settings right - I could do with a hint > where to look for that.   I'm so glad I'm not on virgin.   -- Adrian C

Pup Dup <pupdup1@gmail.com>: Nov 08 09:09PM -0800 Our website is the best place to watch your favorite shows lets you to watch and download free episodes anytime and enjoy browsing.

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