More Mailbag!
Extended Teardown Video here: https://www.youtube.com/watch?v=2o8MDCIlOEk
Forum: http://www.eevblog.com/forum/blog/eevblog-821-mailbag/'>http://www.eevblog.com/forum/blog/eevblog-821-mailbag/
SPOILERS:
Military Mystery Item Teardown - UPDATE: This is very likely for a 1960's NASA Atlas D ICBM communications system!
Likely designed by Ellis G. Goodwin
http://www.eevblog.com/forum/blog/eevblog-821-mailbag/'>http://www.eevblog.com/forum/blog/eevblog-821-mailbag/msg806525/ #msg806525
Get Your Ass To Mars Buzz Aldrin
October 22nd 2015 USA Today Back To The Future Newspaper
Kickstarter KeyDuino: https://www.kickstarter.com/projects/1535978353/keyduino
Esinomed Infoview medical tablet computer
TDA7377 Power Amplifier Chip: https://tibounise.com/misc/TDA7377.pdf
500W PMPO Bullshit
Marine LORAN C Autopilot Teardown
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Hi welcome to everyone's favorite segment. My ol' bag where I just opened my mail. so exciting. This one's from Alexander Selma it comes from Deutschland Hi to all my German viewers.

my third know sorry yeah maybe second highest country I think equal with the old dot so at about 10% viewership or there abouts us is about 20% viewership and Germany's about ten. UK is about ten in Australia's about eight something like that Anyway wits anyway see what he sit in. We have a note hello from Germany he lives in Lake Jim C in Bavaria why don't we Berberian viewers he sent in Well I won't ruin it. Well packed.

it is a tablet computer. Um let's is Zeno med. It's a like a medical. High-tech solution is like a medical one.

That screen looks really interesting. There's a patent on that screen. well check it out. Wow Maybe a 2-minute teardown? Excellent.

and what else we got another two minutes here down. Oh my God. I have 500? What? like a dodgy? probably onehand / amp? Yeah yeah. I don't think yeah you can just you can just tell it's like a one-way brain.

Definitely 2 minute area. Let's go and he's a story behind the tablet computer and the Parabola fire. Alex is sentient. He got this one.

just it's rated at rated at 500 watts. RMS Maybe you can tell the correct rating for this piece of crap. Yeah I don't think it's going to be 500 watts? Yeah. I Think we're looking at the classic peak music power up with the Pmpo.

Let's take it apart and of course you know exactly what's going to be in this. It's just going to be a single power amplifier. I See, it's got the one screw in here. Let's take off the end caps and nope.

there we go. Slide it out that way. There we go. We've got one little staggered pin as a sip.

Pair up with our package. We'll take a look at the chip in that. But yeah, what's that brand? It's a J Winco vent. It's got a vent on the top.

Yep, it's gonna need it and that's a TD A 7377. Yep, a Jewel Channel 31 Rms power amplifier. 500 watts music power output. Yeah, what Are we in the back? in the 80s? And here's this tablet computer that he got from a company ten kilometres away from him.

They went bankrupt and he got tons of stuff for scrap metal prices. It was designed for hospitals to display all kinds of, you know, stuff for doctors and patient information and stuff like that, perhaps. And as I said, it's got the rather strange looking pattern on the screen. Check that out.

Is that something to do with the touch screen? Or really, do we have serial number 11? But hold on your hat. Alex says the internal battery is dead, but if we apply 15 volts to these terminals here, then we can actually get the puppy to pair up. Let's try it. Here we go.

Let's give it a purl. 15 volts. Wah-wah-wah Hang on. there's a button on the back I think I have to he says on the side but there's no button on the side.

So here we go. Oh yeah, Oh yeah, come on baby, you can do it. Ah Phoenix Award boys, let's run it yet. Ah Windows XP There you go, Look at that fancy pantsy Wow it's waiting until this thing boots could take a while.
Oh bloody. XP Give me Windows 3.11 Can we move the cursor? Yep. No worries, that come on boot. damn you Micro! CAPTCHA and I don't understand a word of it, but there you go.

Nope. Kinect Yep, it's connecting to something some sort of custom job looks like they've built. You know, probably some sort of R&D group or something have been commissioned by the hospital or whoever, some medical company to produce some sort of custom prototype. Hence, like the serial number like 11 they probably only made like.

you know, they had a contract to supply like 50 of these things or something. perhaps. So yeah. I got no wig I don't even know what any of that says I don't even know what I'm agreeing to I Got no idea, but no idea.

sorry. it's trying to connect but obviously can't say. Probably some wireless thing you can play solitaire. Check it out, don't worry about the patience.

geez, so that grid on. there's probably an early touch way. the only touchscreen a dying I was gonna say like I can't get look I can get I can get the move the 7 I can move the King I cannot move the 10. There's like a whole column there that does not that touch screen does not work on C So something's up there so that's probably what.

That's one of these early capacitive touch screens because you know it is not resistive because just the slight I don't even have to touch it. Alright, let's open this puppy up and see what we've got. Oh oh what a dog's breakfast! Look at the hot snot. next up.

one from Erica from Randolph Vance thank you very much Randolph he's from Lexington Kentucky excellent Lexington Kentucky I don't know where I've heard of it. Maybe was that a mailbag but interesting. What's inside this one look nice and flat like this. It's addressed to that crazy Hollywood Fantastic.

Um I can that I can pull the turbo tomorrow because this is gonna if I cut through. this is gonna have that horrible crappy stuff in it I'm sure this is yeah I just got attacked there. It is awful. We have a newspaper.

Yes kiddies. we used to read these things in. this is the tabloid format is it not? USA Today It's excellent. This is the one Fantastic.

Check out, Check it out. It's from the future which is now the past. Marty McFly Brilliant! So thank you very much Randolph for sending this in. This is fantastic.

This is actually the USA Today from the October 22nd 2015. This is not the joke one from that. Like this is not a movie prop reproduction. this is.

actually. well, it kind of. Well, yeah, it kind of is. but they actually included it in the actual USA Today It's the Hill Valley edition and there is Marty McFly youth child arrested for theft, fantastic cholesterol make you are maybe cancer cure and three injured when mum rehydrates pizzas nice is fantastic and Hollywood to remake a match made in space by George McFly Public more gullible than ever I've got to read that one ships linked by whales since 1979 Fantastic.
I thought it was piracy are responsible for global global warming didn't you know? I Can't believe they close the cafe eighties in the Moscow Unbelievable because Russians were not nostalgic about 1980s USSR or Leonard Brezhnev It's practically impossible to show this whole tabloid thing on the video here dancing in frame. but yet here we go. Jaws 19 Brilliant. The best Jaws sequel of the year.

Fantastic. And what are we got? Yeah and forever bloody USA Today flogging their own crap and the future is now the trilogy awesome and Michael Bloody Legend And there you have it. That was just an extra they put on the front. This is the real USA Today from the 22nd who's President of the United States in 2015? Well, apparently it's a woman and this is not a joke.

Unfortunately, that could be a real story these days. Next up, we've got one from none other than Buzz Aldrin The Buzz or some. not personally. But anyway RPX Sure, it's a fan of the Eevblog.

is he not you thumbs Mailbag, Let's check out what we've got. Oh yeah, oh yeah. get your American ass to Mars look at that. Brilliant I Love it.

Good on your buzz. Another one from the United States Tara squash with a Z H Thank you very much. Terrace from Cemre Mich in Washington. Haven't heard of semi mich I don't 70 of yours? That's probably not even any pronounce of that goodness.

Anyway, um, lots of people complaining about how I pronounced Kirchhoff in my recent Kirchhoff's laws videos. That's yes, that's actually how it's pronounced here in Australia I Believe that's the most common pronunciation in the US as well. I though I stand to be corrected and a few people took me the task over it that that's not the proper German pronunciation and all that I know. Welcome to the world of you know, evolution of language and all that sort of jazz.

Let's have a look what we got. haha. We have. Look at this that looks like we've got a note that me even though I'm not in it, that sort of thing looks like one of those uh, Fishfinder thingamabobs for a boat.

Cool. aha. Terrace Yes, he's from Seattle and well, originally from there. Well, he's a Ukrainian guy and yes, there he is.

You might recognize where he is. Yes, that's the Eevblog lab. Yes, he did visit a couple of years back. Oops, sorry for not immediately recognizing your name.

Terrace Anyway, what we've got is marine navigation system. It receives the Lauren see our signal is probably made in the mid-80s Well, let's tear it down so it did look like one of these I you know, fish sonar thingies. It's kind of got that look. you know, like I don't know what any of this crap means here.
but yeah, looking on the back I immediately I knew it wasn't because it's got an antenna there and autopilot. There we go. So it is a yacht nerve system made in Japan All the best stuffs made in Japan And there you go. That's nice construction.

I Like that like we saw in the Lauren receiver last time. We've got a model, multiple filters here and stuff like that so that's fairly typical. I Love how they're using that bracket at the back as a heat sink for these two puppies. A couple of fuses in there and not much going on under there.

but yeah. Nice multi board. well, two board construction around a third one for the LCD module. They wouldn't have manufactured that, they've just been off the shelf one so they'll just have some Mo classic nineteen eighties vintage processing down there.

This would have been a hand tape that layout. They got a genuine bodge wire on there and the main post digital processor board that's got classic Auto Route written all over it and you can probably see the shine on that. That's our conformal coat. They've actually masked off those two pins there you can see.

and yeah, look at that. looks like you know, flux residue from wave soldering. But it's yeah. they've conformally coated the back of that board for the marine environment.

They haven't conformally coated the top or the components though so well you know you're gonna go. You're gonna do that and conformally coat. You might as well go the whole hog. there it is.

Check it out and we do have a date code that 1984 there we go late 84 so it would have been manufactured in 85 or there abouts with our 10 megahertz reference oscillator there. Japan Radio Corp it's made in Japan Marty McFly approved. so I'm not sure what that puppy is. there could be some sort of custom basic, perhaps interesting so.

but anyway, we've got all very old-school look. Okie 8oc 85 In fact, we've got jewel. what have we got jewel processors in there? that's rather unusual and 8255 for the I/o Wow really old-school stuff actually. I Just noticed the whole thing's manufactured job by Japan radio Corp I think we didn't We see that last time in the previous mailbag teardown of the avionics stuff.

So there you go. geez or in everything. And they even did the display unit as well. Check it out.

Standard Hitoshi Chipset we've got I look I don't look that looks like your regular membrane panel. but I buggered. If I can press these bloody keys, there's just nothing there. Unbelievable.

So thank you very much Terrorists. That was excellent and sorry I Do forget how do you pronounce your name but it was good to meet you back in the lab. Yeah, couple years ago wasn't it? Geez, time flies. Oh my god.

Why from Deutschland Yet again it's from chip Guy. Oh geez yeah. parents were rather nice won't they? I'm from head over in Germany and open before bad arises arrived. Yes, the better ices are supposed to be.
what is it the 23rd of November Now they're supposed to be delivered in November But yeah, they're gonna be a dead light and it's gonna be no end of our testing. And down to it, not. well just be me. it'll be like every one.

we'll be testing this thing. so I don't know what their game plan is I Mentioned this on the on the forum thread I Don't know what the game plan is once they ship these things cuz up until now they've been able to. You know, use the excuse I You know all these bloggers don't know Jack because we haven't actually tested it. You know, as if we have to test gravity and things like that? Yeah, anyway that we don't know squat because we haven't tested that well.

once we get the real units, every man needs dolls. Go and test it and well, the game's gonna be up. The real performance start is going to be out and we're gonna know. Anyway, here we go.

It's a button to go with my fail button. Awesome! I'll stick my button up Beauty were FIFA power batteries. yeah, wouldn't trust those as far as I can throw. Geez.

Hmm bit crusty. Anyway, let's plug them in. it's got multiple voices Tiff's gone five brilliant Brilliant. I think we love it.

Another one from the US this once you've got freely get good on your Godfrey Let's see what he sent in shall we? He's from butter bought in Texas everything's bigger in Texas Sorry, that's a stereotype. but yeah, let's look alright. That's a note. We've got some real crumbly.

It's very heavy too, by the way. I got some real crumbly foam. So yeah, that's just. it's real crusty in here.

Well well does. Looks like he's cut down the exact shapes required. Super messy getting this thing out. Geez, the things crusty the hell is it? Multi Coda: What's international data systems? What's a multi code up to minute teardown? So Godfrey from Southeast Texas and he didn't know I did this for my full-time job? Yes, Unbelievable.

Isn't it like yeah? I Do this for a living I Opened my own. Unbelievable. Let's check out what is in this multi coder, huh? What some big-ass D connectors on here and that's about it. Hmm.

so all we know is that it's military surplus. And yep, check out the conformal coating. Look at that. Oh yeah, that whole board has depth.

Yep, this is military all right. Wow And look. the connector or potted as well look completely part of. they would have hand wired those and potted it.

Tiny thin body wires on there will gauge of those. Absolutely tiny. Wow And there's the other end of it. Wow That big thick.

a balloon. That's ridiculous. Wow Just you know, no thought given to the systems engineering of how it's all interconnect and stuff like that bugger it. We need to get 50 bloody wires from here to here.

Huge cable loom. Wow But they try to jam as much you know, 1970s or look by the looks of it functionality into a given volume like this and the density is incredible. Wow Look at this thing. look at all these blocks.
They're just completely potted blocks so each one of those if he custom-made that would be an individual and you know military part number for each module and they're just wired the damn things in and like just whack them on a board and really haven't done much interconnection with the board at all. And there's something. Look, these are the board to board interconnects. Wow, it's just unbelievable.

You can actually see how they've actually soldered those onto the top of these like you know, like pin header interconnects. It's just unbelievable. Well one of my first, in fact, part of my first job when I was 17 was troubleshooting her appear in military power supplies and things like that. Very similar to what stuff like this.

It was all horribly conformally coded. Although they didn't it wasn't as dense as this. They didn't have really end on end on components like this that give you a higher density. so everything was conformally coated.

So just to get in there and test it, you'd have to scrape like you're You know, to troubleshoot the thing you'd have to scrape away the conformal coating off the pin before he could probe it. And I repairing it was just was a nightmare. Jeez, those were the days. Looks like do we have a stud die? Oh there's but what the hell is this thing like? Is it some relay or something? That's just everything is hand wired? I mean yeah, we've got some.

You know? Yeah, the PCB is doing some things, but oh wow. and there's the back of the board. So here there's some interconnect going on. but woohoo it spotted.

Imagine like the amount of effort that goes into building this thing. It's incredible that wonder military stuff cost. You know? Yeah, we're hammer cost like $200 and there it is fully apart. If anyone has any clue what this thing actually did, multi-coated channels speed, some sort of you know multi-channel motion thingy I Don't know if anyone's got any clue from International Data Systems in Dallas, Texas? let us know.

Leave it in the comments Wow thanks Godfrey and postcard time this one comes from Canada from Steve that's the correct tongue angle. There you go. Beautiful and this one's from tears and we have a lovely church from the old dark Beauty and another one from Canada this is Bev and yes I've actually been to Beth and yes it is that gorgeous and we have a postal hack if we receive this and we did for Lucca he hacked the system. check out the price of the postage stamp Beauty Got through the system from Capri Fantastic! I Don't want my Italian viewers and Frankfurt in Germany I Think that one's been a little bit colorized but sure it's nice.

The Penn railway station Fantastic. this one's from Dustin in Texas one from Jenny from Finland hi to all might finish viewers fantastically that what's that white stuff? I Don't get it. Oh my God. Once from Andre in Thailand don't get many from Thailand I know all my Taiwanese viewers know Thailand Eviews I don't know Oh I'm sorry from his second house in Thailand Awesome thanks Andre I Do enjoy getting postcards so I don't always show them.
Sorry about that. but I'm sorry for those who hate, who cares I'm gonna show them occasionally so let's have a look. oh sorry, this one is from nobody. it's from the USA we've got some polar bears and yep, doesn't say what is it sister Wow got some dosh some funny money, some of these green stuff I'm smelling that at all I said in one of my old videos American money like this smells like a company or somebody described it.

no it wasn't me I Just repeated that somebody described us smelling something between feet and asks some combination of like 20 bucks. it's a donation thank you very much to United States Naval Ships Charles Drew thank you very much the United States Navy Seaman I guess something like that Charles good on you. he's a ship's electronic technician quite get the note because it mentions like a fluke an old flute 87 oh sorry Flukes 77 series four and how he's got issues with it's intermittent and would I not dissect this you I mean she could have missed it No, no fluke 77 mm-hmm that's from Alan Horowitz I'm sorry Ellen it's a yep then you notice that US NS United States Naval Ship I'm a ship zooming the Charles Drew I wonder what class that is what class of ship that is Oh I have to go Google I've got a really old one I Want to tell you the date but sorry it's from Gregor's dumb Mangala from oyster ik I'm know what idea where that is, no idea of whatsoever and what is it? It looks like maybe it's just a postcard sent in a letter because that's what it looks like and yes it is the hopper we're greetings from Vienna There you go. the postcard.

some old made into tunnel diodes. we have some tunnel goes I Do have some tunnel diodes beauty and there's the tunnel diode for you tunnel diode aficionados I know you're out there. come on, come out of the closet beauty. we've got one from France I Don't want my French viewers this could be like a last name first thing.

I think it's Pierre Charlie ah I don't think it's Charlie a Pierre as what it says there. So yep, we've got a note. Should I just read the note but that kind of sort of ruins it doesn't Oh have a look I'll have a peep myself no tell you what it is, bottle enters like it's in French I have no idea what it is I can't let's just open it, shall we? Yeah, this is one of these ones. It's all wrapped up so I got no idea where the sides are.

Like just get in there like this. Perhaps There we go, right? Okay, there we go. No box wasn't fragile Here we go. Scan the badge here.
Push Yeah! Wow Neat. Let's open it up. Check it out. It's the key do we know? and Scan the badge here.

We've got an NFC tag and presumably on the letter. Open it unless I scan it and then push the button. What is it? Disarm it? How can alarm doesn't go off or something? Scan the badge here. Yep, our.

do I have to keep it there and push? Oh yes, it opened I think that I just heard a solenoid. Oh, hang on right? So I can't open that? Oh there we go. we're in like Flynn Geez, that wouldn't it look dodgy to the x-ray people. Would it the airport? No, no uh-huh Looks like it's gonna be a Kickstarter Starting from this every of the November for one month.

I Think we're on time. it's the 23rd of November Um, it's what does it do. You can read right? NFC Tags peer-to-peer comes with a smartphone to show you this board. It's just a thing he just set up just for me to show it off.

Excellent. And it looks like he's got a video on YouTube about making it as well. Excellent! Thank you very much. Pierre And yes I had it right for this.

Pierre first even though they um it was came second on the thing and here it is. Let's try it again, shall we? It's here we go. so let's there's our there's our spot. The NFC tag.

Oh did the hots not come off? Anyway, there we go. Hey the solenoid goes around and if I don't have the tag there, hang on. yeah. See if I don't have the tag there then it doesn't open.

It sounds like it's opening but doesn't. Well if I whack it on, whack it on top. There we go, Beauty, It works. What a Bobby Dazzler So there you go.

That is the keyed we know board and I just checked the kick start up. Here's almost reached his ten thousand Euro goal to get this thing made. So check it out if you need a NFC Yeah, you can use it for anything really. This is just you know.

an example app where you could lock something with NFC key fobs but it's built into the Arduino board. Fantastic. No external antenna crap, Just whack it straight on the thing that you want to protect. Nice.

So if you want, check out the kickstart hold and get him down below. Thank you very much PA and it's designed in France Oh I gotta be made in France as well. That'll be neat. You.


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By YTB

25 thoughts on “Eevblog #821 – mailbag”
  1. Avataaar/Circle Created with python_avatars Untrust says:

    "Medical high tech solution"
    Oh, if only!

  2. Avataaar/Circle Created with python_avatars Tested to Destruction says:

    isn't get your ass to mars is a ''true lies'' reference? good old Arnold

  3. Avataaar/Circle Created with python_avatars SIR MEME says:

    ?!?!?!?!?!!

  4. Avataaar/Circle Created with python_avatars SIR MEME says:

    Where did you get the knife/dagger

  5. Avataaar/Circle Created with python_avatars yeah says:

    lexington kentucky? that's where i live. RANDOLPH.

  6. Avataaar/Circle Created with python_avatars Jack Newton says:

    Sah-mam-ish

  7. Avataaar/Circle Created with python_avatars hammi says:

    I think that tablet was some sort of production prototype. that weird case and the markings on top (for drilling the holes). I mean he got that directly from the company.

  8. Avataaar/Circle Created with python_avatars John Doe says:

    Correction to summary on forum: This was obviously not an autopilot, just a position receiver to be connected to the autopilot. Maybe, maybe not, using the same NMEA 9600bps protocol later used for GPS receivers.

  9. Avataaar/Circle Created with python_avatars ender_scythe says:

    The multicoder probably encoded communication.

  10. Avataaar/Circle Created with python_avatars AranE Games says:

    that 'NASA ICBM guidance system' must have been so hard to find, can't find anything of the sort on eBay. such a cool thing when you take into consideration what it could have been used for….

  11. Avataaar/Circle Created with python_avatars mspenrice says:

    That tablet is actually a bit newer and higher grade than we first thought, I think. The BIOS copyright is 2007, and it's got a good half gig of memory on board. Which is roughly equivalent to my own older HP tablet, but with a lower power (and so much cooler and much more efficient, one presumes) CPU and maybe a lower rez screen.Which is very confusing because why were they making that when machines with better performance and better touch screens could be had just by walking into a consumer electronics store at the time?

  12. Avataaar/Circle Created with python_avatars mspenrice says:

    I'm guessing that is the "A Knife" ๐Ÿ˜€

  13. Avataaar/Circle Created with python_avatars Baloo says:

    love you letter opener ๐Ÿ™‚

  14. Avataaar/Circle Created with python_avatars Asmodat says:

    Dave it is so sad, I can see you age over the years. Cut this sugar please !

  15. Avataaar/Circle Created with python_avatars TheLT says:

    Won't the guy who sent the military box get in trouble? ๐Ÿ™‚

  16. Avataaar/Circle Created with python_avatars Deepwinter says:

    Expression of shock, disgust and dismay was classic when Dave opened that "Tablet"

  17. Avataaar/Circle Created with python_avatars bagnome says:

    I feel the needs to mail Dave a can of instant snow.

  18. Avataaar/Circle Created with python_avatars The Akh says:

    Thats not a knife, now this is a knife.

    Sorry, just couldn't resist.

  19. Avataaar/Circle Created with python_avatars Zรฉ Bianchi says:

    Brazil has some viewership as well. Or maybe just me ๐Ÿ™‚

  20. Avataaar/Circle Created with python_avatars Tripcore says:

    People from Thailand are called Thai if I'm not mistaken.

  21. Avataaar/Circle Created with python_avatars Tripcore says:

    The audio is a bit harsh on my precious ears.

  22. Avataaar/Circle Created with python_avatars ๆ›น็คผๆžœ says:

    ๅผ€ๅฟƒ๏ผŒ่ฆๆœ‰็พŽๅฅฝ็š„ไธ€ๅคฉใ€‚

  23. Avataaar/Circle Created with python_avatars Asgardium - Tomclanys says:

    Lol I catched the reference and thought about Back to the future a minute before you said "Marty McFly approves!". Nice one ๐Ÿ˜€

  24. Avataaar/Circle Created with python_avatars The Grand Mufti of Wakanda says:

    That's not a knife…

  25. Avataaar/Circle Created with python_avatars ChozoSR388 says:

    I'd have to agree with the description of the small of American money. Stinks.

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