Insignia NS-HDTUNE Take Apart/Exploration
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From: Chuck on 8 Mar 2010 13:06 On Fri, 5 Mar 2010 16:34:59 +0000 (UTC), root <NoEMail(a)home.org> wrote: >William R. Walsh <newsgroups1(a)idontwantjunqueemail.walshcomptech.com> wrote: >> >> No tuners were harmed in the making of this page or in the exploration. >> By the way, I have been completely unimpressed by the performance of >> this tuner. (I'm so glad I paid nowhere near the retail price!) I'd >> recommend you look at something else if you want to listen to HD radio. >> >> William > >My local BB has sold the tuner for $70 compared to the normal $99. >I have been thinking of buying one for some time, what are your >complaints and do you have a recommendation for a better unit? I bought one of these tuners from Best Buy liquidation. The main problem I have is, at least once a week, when the unit is first turned on, it won't receive a signal. Since unplugging it for 10 seconds makes it functional again, I haven't tried to repair it. Sensitivity on my sample isn't great, but no worse than the average for modern tuners. Chuck
From: William R. Walsh on 8 Mar 2010 14:54 Hi! > Very nice. A photo of the unit before disection might be useful. Ask and ye shall receive. Okay, it's not a "before" picture, but the unit is back together and on my stereo shelf. http://greyghost.mooo.com/nshdt-review/audiostack.jpg (564x446, 52KB) The "scratch and dent" damage comes mainly from a scrape across the top cover that disrupts the paint. The case is minorly "kabonged" but that was easy enough to fix with some careful work in the garage. The stereo receiver below the tuner is an Insignia HS-R2000 and I find it to be an excellent piece of equipment. http://greyghost.mooo.com/nsr2000-review/ > TI and Atmel partnered on the design. TI does the screaming media > decoding. Atmel does the analog RF and conventional AM/FM decoding. Interesting to know. I didn't turn that up in my research (at least not that I remember). I am surprised by the presence of the Atmel tuner. Atmel is not the first name that comes to mind when I think "radio tuner IC"...more like "microcontroller" or "FPGA". > So, did it work when you put it back together? How many spare screws? No HD Radio tuners were harmed in the making of that teardown. Despite the obviously less than ideal environment, nothing was harmed, no screws were lost and none were left over. William
From: William R. Walsh on 8 Mar 2010 14:55 Hi! > I have a office carpet that lives on a diet of small hardware. Drop > anything onto the carpet, and it will immediately be injested by the > carpet, never to be seen again. The carpet is very much a picky eater > as it will ocassionally regurgitate a few of the larger items. I find > it necessary to regularly feed the carpet a ration of screws and > washers in the hope that it will be satiated and not devour anything > important. May you never have to put a vacuum cleaner across it. The shrapnel may be terrific. :-D William
From: Jeff Liebermann on 8 Mar 2010 18:48 On Mon, 08 Mar 2010 12:51:43 -0500, Meat Plow wrote: >On Sun, 07 Mar 2010 09:37:18 -0800, Jeff Liebermann ><jeffl(a)cruzio.com>wrote: > >>On Sat, 6 Mar 2010 21:34:52 -0600, "Klaatu" <nospam(a)today.com> wrote: >> >>>So you have the nuclear powered Sirius radio that gets reception in your >>>garage? >>>Idiot, satellite radio is line of sight. Wont work in a garage, under a >>>bridge, or under anything that obstructs line of sight. DOH! >> >>Try again... >> >>Both Sirius and XM have terrestrial repeaters to fill in dead spots in >>metropolitan areas, where tall buildings get in the way. >><http://www.dogstarradio.com/sirius_map.php> > >Besides that Jeff, Sirius penetrates my gararage roof just fine. And I >can take the radio inside and get decent reception through the ceiling >and roof in certain spots. But there is a time period of a minute or >so that when one sat goes out of range and the other comes in range >that is shaded so the signal drops out where as outside there isn't an >issue. Sirius works differently from XM and is generally a better system in marginal areas. There are 3 RF channels around 2.3GHz. Two come from each of the two satellites. The 3rd from terrestrial repeaters. The Sirius receiver decodes all 3 channels simultaneously and conglomerates the usable data (which creates a 4 second delay). XM uses 6 carriers but only decodes 2 carriers (to save power and CPU horsepower). The satellites also follow a rather odd figure 8 pattern over the Americas, which results in signal strengths changing over the day: <http://en.wikipedia.org/wiki/Sirius_Satellite_Radio#Satellite_technology> If you have a wooden roof on your garage, I'm not surprised that Sirius works inside. However, if you live in a concrete and steel apartment building, where the garage is under the building, I suspect you're hearing a terrestrial repeater. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com jeffl(a)cruzio.com # http://www.LearnByDestroying.com AE6KS
From: Jeff Liebermann on 8 Mar 2010 18:59
On Mon, 8 Mar 2010 13:55:34 -0600, "William R. Walsh" <newsgroups1(a)idontwantjunqueemail.walshcomptech.com> wrote: >Hi! Not high enough. >> I have a office carpet that lives on a diet of small hardware. Drop >> anything onto the carpet, and it will immediately be injested by the >> carpet, never to be seen again. The carpet is very much a picky eater >> as it will ocassionally regurgitate a few of the larger items. I find >> it necessary to regularly feed the carpet a ration of screws and >> washers in the hope that it will be satiated and not devour anything >> important. > >May you never have to put a vacuum cleaner across it. The shrapnel may be >terrific. That's the way I usually find the screws. When I run the vacuum cleaner, I usually hear little pings and clunks as the vacuum cleaner inhales the screws. It's usually a lost cause trying to fish them out of the dust bag. I have a magnetized iron bar that I sometime drag across the carpet. It's made for picking up nails at construction sites and works fairly well. When that doesn't work, I have a Bissell 150 mechanical floor sweeper: <http://www.bissell.com/ProductDetail.aspx?id=2981> where I can easily fish the screws out of the catch bin. Another trick I use requires a flashlight. I shine the light *across* the carpet. Anything higher than the carpet surface will cast an easily visible shadow. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com jeffl(a)cruzio.com # http://www.LearnByDestroying.com AE6KS |