- Broken Nook Simple Touch - 1 Update
- Need Hot Swap adapter for 2.5 inch ssd - 4 Updates
- Selectivity vs. sensitivity - 2 Updates
| The Real Bev <bashley101@gmail.com>: Jun 12 09:43AM -0700 On 06/11/2018 07:37 AM, micky wrote: > were obvious but some a few were just little cracks. I think you could > solder straight the "wires", the traces, but you'd have to scrape off > the lacquer or whatever it's covered with. Extremely nearsighted person examined whatever was visible and found nothing cracked or broken, so I put it in a plastic bag to await inspiration or the breakage of the one I'm using now. Thanks, guys. -- Cheers, Bev "One's chances of winning the lottery are not appreciably improved by actually buying a ticket." |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 11 01:44PM -0700 On Mon, 11 Jun 2018 03:03:50 +0000 (UTC), root <NoEMail@home.org> wrote: >> It works, but the plastic mechanism is very flexible >> and I'm afraid I'm gonna break it with every ejection. >Thanks for responding. I just ordered the HDCV-4 from NewEgg. <https://www.newegg.com/Product/Product.aspx?Item=9SIA8HV54A2408> Except for the lack of ventilation, it looks ok. >I do have a Kingwin Hot Swap Caddy that takes the 2.5 drive, >but the caddies are no longer available from Kingwin. Caddy? I just use the SSD with some folded over tape to help extract it. The 4 side mounting brackets for the 2.5" drive act as guides. No caddy needed. Usually use this Rosewell adapter: <https://www.newegg.com/Product/Product.aspx?Item=N82E16816132098> <https://www.newegg.com/Product/Product.aspx?Item=N82E16816132098R> -- 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 |
| micky <NONONOmisc07@bigfoot.com>: Jun 11 08:30PM -0400 In sci.electronics.repair, on Mon, 11 Jun 2018 13:44:37 -0700, Jeff >Usually use this Rosewell adapter: ><https://www.newegg.com/Product/Product.aspx?Item=N82E16816132098> ><https://www.newegg.com/Product/Product.aspx?Item=N82E16816132098R> How is it that vendors have so many open box items? It seems like once in a while someone would send something back, so there could be one, maybe 2 of something, but often I see whole webpages for individual open box items |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 11 09:14PM -0700 On Mon, 11 Jun 2018 20:30:46 -0400, micky <NONONOmisc07@bigfoot.com> wrote: >in a while someone would send something back, so there could be one, >maybe 2 of something, but often I see whole webpages for individual open >box items Newegg has their Premier plan, which offers both free returns and no restocking fee: <https://www.newegg.com/neweggpremier/> So, people use it and Newegg gets stuck with a bunch of returns that they unload for a discount. Amazon Prime also offers free returns, but limits the returns to those items fulfilled by Amazon: <https://www.amazon.com/gp/help/customer/display.html?nodeId=201532130> -- 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 |
| The Real Bev <bashley101@gmail.com>: Jun 11 10:42PM -0700 On 06/11/2018 09:14 PM, Jeff Liebermann wrote: > <https://www.newegg.com/neweggpremier/> > So, people use it and Newegg gets stuck with a bunch of returns that > they unload for a discount. Anybody remember DAC? Mail order place. Wonderful catalogs. They sold slick inexpensive electronics/appliances. Their breadmakers were really neat, and may have been the first 'affordable' ones. The bad thing was DAC's liberal return policy, which resulted in everybody returning their breadmakers after the thrill wore off maybe 1 or 2 months later. They had a local store with an open-box section -- full of breadmakers. They eventually went belly-up, which was sad. The guy tried to start back up a few years later, but it didn't work out. > Amazon Prime also offers free returns, but limits the returns to those > items fulfilled by Amazon: > <https://www.amazon.com/gp/help/customer/display.html?nodeId=201532130> Somewhere I read you can return Amazon stuff at Whole Foods stores, which might or might not be more convenient than shipping it back. -- Cheers, Bev "A complete lack of evidence is the surest sign that the conspiracy is working." -- Tanuki |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 11 12:43PM -0700 On Sat, 9 Jun 2018 18:02:00 -0700 (PDT), Phil Allison >The FM signal is inherently wide band, with +/-75 kHz deviation at peak audio level - if the IF bandwidth is less than 150kHz, distorted sound is the result. >I have a radio scanner ( AR 1000xlt ) with wide and narrow FM modes, 30kHz and 200kHz respectively. Listening to broadcast FM while in narrow mode is *intolerable*, in wide mode it sounds just fine. >.... Phil A bit of hair-splitting here. The FM channel allocation in the USA is at 200 KHz intervals. However, if one adds the digital (HD Radio, IBOC, iBiquity, etc) modulation, the bandwidth is now 400 KHz wide: <https://en.wikipedia.org/wiki/In-band_on-channel> This is what it looks like on a spectrum analyzer: <http://www.learnbydestroying.com/jeffl/crud/KBRG-100_3.jpg> <http://www.learnbydestroying.com/jeffl/crud/KCSM.jpg> In most HD Radio receivers, the IF bandwidth is set by a digital filter. For conventional FM, it's 200 KHz wide. For digital FM, it's 400 KHz wide. I suppose it could be front panel set by the user, but methinks it makes more sense to have the IF bandwidth automagically set by the mode and sub-channel. Measuring Your IBOC Spectrum <http://www.nautel.com/wp-content/uploads/2011/08/NAB-Measuring-Your-IBOC-Spectrum-David-Maxson.pdf> -- 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 |
| Michael Black <mblack@pubnix.net>: Jun 11 10:54PM -0400 On Sat, 9 Jun 2018, Phil Allison wrote: > I have a radio scanner ( AR 1000xlt ) with wide and narrow FM modes, > 30kHz and 200kHz respectively. Listening to broadcast FM while in narrow > mode is *intolerable*, in wide mode it sounds just fine. Continuously variable for FM doesn't make sense. But there have been some FM tuners that could be switched between "wide" and "narrow", in relative terms. So for strong signals, wider bandwidth is fine. But for weaker signals, narrower bandwidth avoids interference from adjacent signals that are stronger. It wasn't uncommon for FM DXers to swap the ceramic filters in their FM receivers from the often 280KHz bandwidth to down about 180KHz, at one time one could go to a catalog and order Murata ceramic filters in a range of bandwidths. If you don't need FM, you can get by with narrower, though of course nt in the tens of KHz wide. The scanner wants "narrow" for two way communication which is narrow deviation, 10KHz or smaller in recent years. The wide is for broadcast FM and maybe some other things, since yes, the "narrow" in this case is way too narrow for FM broadcast. Of course, the wider bandwidth can be useful for things like receiving weather satellites, which may have a wider deviation of something like 40KHz, but also because of doppler shift, an even wider bandwidth makes things easier. I know I've seen modifications for scanners to use with weather satellites, and they bypass the narrow filter at 455KHz, which leaves an FM broadcast band type ceramic filter at the first IF of 10.7MHz. There was a time twenty years ago when I was bringing home lots of Delco car radios from garage sales. I'm not sure what the FM filter is in there, but they certainly seemed to have better skirt selectivity than other FM radios I'm familiar with. The AM filters seeemd sharper too. Michael |
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