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I'm gonna talk to you about the digital radio amateur workstation I'm going to kind of cover I did a radio I'm gonna cover what this bigger draw system is how to use it and then hopefully I can hopefully gonna have a demonstration and just the process of using I've kind of lured some advantages of the system without further ado first off you got to go the first part this is why digital radio and Jason just starting didn't miss anything yet what's disarray Tavor and now we talk about digital radio involves computer somehow or a very smart radio I think you could look at and think about Morse code and Riddhi as being really the first digital modes for lack of a better term you're not using voice you're using sound so why does a radio and I mentioned you kind of look at that the lineage with CW and Riddhi and forms like that and now we're at more advanced forms but the they all have the same advantage they can handle a weak signal propagation you have low power you have not Apple antennas or you have non optimal conditions Bank conditions yes seems conversations on a single frequency which means that the calls gonna overlap by each other on one signal frequency without interrupting the other conversation if clear precise communication I didn't say concise but it's precise because you actually actually have letters and the system does error checking so you know whatever is being transmitted is being received correctly more advanced you can send the scan documents for example you know an emergency situation you need a prescription or a they've talked about a an approval form to for budgets or get equipment shipped you can actually scan a document get a seizure skin scan it back and send it over there's a modes and of course again it kind of goes through that disaster prep thing you can send pictures you want to show an area of the destruction or whatever else you can send over the digital modes so some of you guys this is your set up for digital radio in the early years you've got your standard voice radio you've got it hooked up to a computer and then you've got the computer between the two is some kind of modem some kind of device it takes computer audio and our computer requests and puts an audio format that the radio can transmit and this is essentially all digital radio works like I said it's a lot it's built into the Peter or in the radio itself but that's what's happening so here is draws and this is a Raspberry Pi hat and for those who don't know - Raspberry Pi is a single board computer it's about that big and this sits on top of that so it's a hat it's just on top like a hat kind of talked about a little bit later but just overall what it has is this is a GPS antenna input this is a GPS receiver itself this is your audio connections that can run to radios and an inside you have a bunch of other nice bells the whistles to do the rest of work if I cut out please remind me okay so what is that thing I just showed you like I said it's a hat and raspberry compliant it should work on a raspberry 4 so that means a raspberry 3 or 4 you should be to plug in and work on the box it supplies power so you just give it 12 volts and the reason I bring that up as the Raspberry Pi is designed to take 5 volts USB power the Hat can take standard 12 volts like what you have for your regular radio setup and will create power for the Raspberry Pi off that so it makes a little more a little easier to use in a condition but the conditions it's got two interfaces like I said two radio interface two audio interfaces essentially using many din connectors in my radio that yaesu it just plugs directly in and I think most radios alike that you get a little bit older radio and you stop having to make your own connections Alex it has onboard GPS using the external antenna so that's important because of it used an internal antenna you'd have to be careful where you mounted it but as it is I can stuff in the middle of a box and it does just fine as long as I have the external antenna connected the PPS for stratum one time source that means it's getting a part per second interval from the GPS clock and is creating its own time signal so first off the pie itself has a very good time sync which is important for digital modes but secondly it shows up as a amputee time source like your computer automatically knows what time it is and when to change the clocks right well that's the npt that's the and mark and explain what that academia is position as a time source so if you have this pi under network it can be the time source again thinking about a fuel condition that you have to have disarray Dios have to have a time sink and Dave and I struggled with that and we had to do manual time hacks you know entering exact moment that we hear the WWV and this while I'm a CLE sinking if everything on the same network and the real time clock is battery backed up so if you do is lose the GPS signal momentarily you still have that constant time signal see everybody's in sync so overall kind of mission that the drawers had the overall drawers system requires the hat a Raspberry Pi or three or four words software and the external antenna that as the complete drawers system and I kind of take you through the next part I marry what had any slides capabilities just this is this system I'm talking about this box with these items in it you can do packet modes you're familiar with those ie APRs as well as sound card digital modes are your agent of stuff anything fldd does wsj X everything that does and win link connections there is a this talked about it has capably for user voice there is some software with addy star in it I don't understand what it's for it seems like it's more towards if you're gonna hook this up to a repeater system and that other set of connectors you might see in the picture that's really for connecting to a repeater type setup I'll have repeaters I haven't looked at my gentlemen alright so I've talked about this piece of hard worker and is a radioed setter so how does the drawers do it was it doing for my elephant at some point is a self-contained box to handle the HF and VHF UHF communication different modes it is the audio interface it's rig control and it does all the encoding decoding and data so that is what you need do digital modes now caveat I said no disrepute er needed no signal lengths or equivalent needed I mean is a radial sort of I kind of get into that essentially the whole draw system is one little box so here's the two ways you can use it headless which means it's not connected keyboard monitor I can't talk about that in a second or workstation it is the entire computer so you bring your monitor with you the keyboard so headless mode that's how I'm gonna use and that's I'm using it right this second that screen you saw when you're checking in that was that the drawers PI running yeah V and see it into us that's the pi screen so I'm the pyre ends now nothing's attached to it except for the GPS antenna on the radio so that's headless mode no keyboard Mouser monitor similar device controls it like a tablet I said perhaps a tablet and I've actually tried it and he can use a tablet to do all the same things so think about that your deployment box is that and a tablet and just a PI draw so that's why I said it's sort of all you need so you had to have the radio and it does some way to communicate to the draw system this is how I should run it and this is what I've shown you this is the headless mode so I'm using VNC software and if you use a Raspberry Pi at all you are probably using BMC software to control it it's just a remote desktop and it comes to start automatically on most of the PI distribution software including this one so this and not the background that's my screen but this in here this is what the PI would be showing if you plugged it into a monitor so I have full control of everything on the screen but also it runs a web server and there's some things that run via that and this particular example is how I contact wind link to do email essentially wind like email and this you can see is a they can this is the web address on the PI that this page of the wind link is and so I just had to go through the buttons and I can send and receive wind link email as well as compose it now for those do we link this does not do the standard messages that when Lync Express does so this would be workstation mode and this is actually my box I'm just about done working but I have hidden in the middle as the Raspberry Pi I have a wireless keyboard attached to it and then this monitor is attached to it so this would really be all I would need in just this box for my particular setup or like I said if you don't have monitor with you just the pie and a tablet of some sort Hardware talk about that a little bit the additional pieces I didn't mention here's the battery backup clock this is the interface for other radios ie repeater and this is the power input this is my box nevermind the the fancy carving there aren't many Raspberry Pi boxes made out of metal that are actually big enough to hold the PI hat this draws hat on top of it so I found one which is actually even too big but I got the job done the fortune is such a tight fit that I had to huh no word this bit by bit solely it's a way trying to make a make a hole for the stuff to fit I couldn't just lay it in there mark it out and I cut it cuz it wouldn't fit I had to cut a hole before it actually fit enough for me to cut more holes if that makes sense but this is looking at this is how I have it can set up my radio just just purely by accident cuz just fit that way but it became important important because there's a microSD card in case of me to swap it out or something if this is buried I don't have a hard time getting that back out that's GPS antenna where GPS about that 12 volt input I just found a barrel connector I had and use that side view I'm showing the two audio inputs the standard for the draw software is the left it talks about left and right for your auto inputs so my rate is attached to left and so the the software understands what the left radio is and you can have two radios it can differentiate between the two and send different commands as far as that transmits the PTT signal or other things to the different ratings they didn't know what you want to do I think it'd be a little bit too complex for what I need theoretically I could hit my akin would up to it for APRs well I'm doing decent modes like without metal box or without plastic box that's the middle box I don't please II but I wanted the RFI shielding just in case and I wasn't sure about box Enterprise and there's are all plastic you can there cut around boxes I wasn't sure what that is okay thank you I'm less subject I did read some people took regular plastic boxes then they align them with aluminum foil or some kind of aluminum sticky tape and that seemed to do the same job I just happened to find that particular box that wasn't too expensive so drawers as it is and I'll kind of show you what whatever is available available for a set up there is a disc image you write to the car to stick it and boot it up but you still have to go through a setup process it's it's very well written and the folks working on it I've spent a lot of time so it's set up so you putting your your a call sign and any other things you have to personalize it to you and it loads all the software around it goes entire script of loading software so it isn't it isn't pre-loaded exactly but once you run the setup script then it's all set up for all the basic things the one thing in wasn't set up and really wasn't documented very well is a radio one on one if you want to see how much power your radios putting out if you just click the mic you're not gonna get accurate signal right you get actual representation how much power you're putting out you need some kind of input into it before you get an RF out and so I first started running it I was getting nothing out of it it was triggering the transmit what doesn't going out I could tell because my power meter wasn't moving so I actually show now a different mode of my radio but I was using this which is what the EAC owner manual says - damn it - display to see if if it's actually getting an input to send out - you know their RF circuits and right now this is how it looks normally now that I have it set up but initially once I found this menu thee this bottom line is the only thing with being lit up so there's nothing coming in to the radio to go back up and so that part wasn't well annotated luckily like I said very supportive group on their group's i/o page and I found out by accident there that a feature they didn't know about is another webpage - running on the PI the entire time called the drawers manager it does a few things the important thing it does is set your levels and these are not my career levels is just a screen shot before I had got it running so this allows you to set your levels but even then it's like okay - what do I set there is a calculator but only works if you know what the radio requires for input and I couldn't find anything listed from mine so talking back to forth to the writer used to recommend as setup you'll put the raid on low power and have an HT in here in the office and just put on the same frequency on that you know an off frequency I was doing this over VHF I was on off frequency on five watts there's a but there's a there's a little command on the software package that will set at 2200 Hertz tone so it's transmitting a single tone such a radio up there you seem to keep increasing until you hear that tone correctly without overdrive or analog a digital gain it still doesn't make sense to it but essentially the analog gain is is data going to the radio so the ELA game is is the carrier going to do and mine set at zero now the digital game is this is how I'm going to describe it and the the software guy that wrote this describes it differently but essentially it's how much how much effort the pie is going into creating the Senath goes out on the waves and they call DB's but it doesn't make sense to call DBS but that's they wanted to use it anyway I had a crank man all the way up before I get an output is modulation but I wouldn't send the tone until I raise it all the way up so that was the only difficult part of than setting up wind link but the wind link setup wasn't part of the draws anyway it was additional I'm gonna go one more slide and I'm gonna show you what was available in the resource for setting it up and so this is why I used this is their group's i/o page and that was my single source except for the win link stuff and I was Kate came forward ACK his YouTube page yeah three videos on the subject and I went to the first video which is actually the second video that I needed so I had it go to a later video he made do that one there's oh okay that was the basic set up and then I go back to the first video I found probably logically the first video I found occurred earlier than the second video that I had to use but regardless of that that is all I need to do to get the thing running for win link I'm sure you get out of this thing alright so if you call that Northwest is a radio groups i/o page and dig in there specifically one for the UD RC which is the earlier version of drawers so they've they've been transitioning the heart or a little bit essentially the same thing they have a wiki at the bottom which leaves of this page alright this gets a little bit confusing until the guy he admits this is basil and 7nx admits he's not very good documentation but they did a really good job anyway so you start this link it says getting started right so I have my brand new image that downloaded from them and I stuck it in booted up so that link takes to this page now how getting started takes at this page and so that goes through how you set up the whole installation the entire thing going back here there's a test and verification page and I guess what that tells you how to test the x.25 stuff some different tune things but mostly this around the x.25 that's working and to see if your sound card parts working all this stuff worked out of the box there was never a problem with that and that was all that their instructions help and the other thing said it was the main page of the message page where he posts a question and they get the software guy where did he really answer within a day or so on so that made this much easier to operate and my final picture in this so this said this is drawers running on my PI remotely so I have i remote it in through the desktop and this is ws GTX running on it and if you haven't used WS GTX it does all these different types of digital modes including whisper and I've fun whisper you be very useful so I mentioned I think I missed the beginning I found a side benefit this whole thing is I have no setup you know what I want to use a diesel mode other than set up to the antenna but don't use diesel modes on VHF or whatever I'm set up all I have to do is power on the box because the PI power is on all the stuff I don't like this starts up and I just open the window and start clicking what I want as opposed to the setup I had for field day I had my signal link and all this stuff plugged in my laptop I had to boot up the laptop make sure the signal length everything came in here me buddy used these things knows this made sure they had the right comport slowed all the different software packages for rig control and everything else and then do the digital modes this I just turned the box on look up an antenna and go so for me once it got past the initial learning curve of trying to figure out what they're trying to tell me if you just read through the steps and do them like it says it installs like it should so me per se I'm really enjoying I think is actually a good investment some of the other toys I bought I haven't used that much this thing's been on doing stuff since day one so I'd like to open to questions I can go back to any other slides or demonstrate something whatever you guys want this is your training how much does it cost I forget the AP rear house it was 150 150 that's always a big question ok so I'm hearing the pilot get pretty hot on the radio ceiling fan on it blowing across it good question so that's my big concerns mission be in the box there is a a salad for a second so I've got this whole list of commands that I use to do stuff I think this one yeah I'll show you [Music] they say these guys wrote all this stuff so it's all there it's just hidden but this is going to show you right now what this thing is running and there's no fan running on it right this second and this my office action kind of warm so right now Sydney 15 degrees I have a little fan I'm in the process of changing things a little bit still I have a little fan that's gonna blow across and I was testing those fan blowing across it and I never with a fan on it a little eighty millimeter fan with that blown across it it was about five degrees cooler it never got any hotter than 60 I never had any these commands pop up if it gets over temp I never got any kind of throttling or anything like that I'm sorry this is a 3a fellas great yeah the four is a different story and I haven't heard any long-term answers about that one and this is a is a four case that has double fans on it and the way that the drums board is in there there's no room for it I barely River he'd say def in a room for a fan above the pie for so I don't know if he can stack it maybe market answer this I don't know if he can stack those uh those as connectors to raise this hat higher up and put some load on Othello's make things worse that's why I'm not running a four on it but I haven't either it's plenty of horsepower in this three oh you need to put the heatsinks on the PI 3 and that it should be ok this is the main things in there right now the 4 needs a fan is it it's running a lot of hunger a lot faster that's probably the one I'm hearing guys tell me on the radio there that they're going you things are hot along the guys were wishing they had to pop by to because it seemed to be cooler but that's why here on the radio I'm an invest in the pies yet at all so I wasn't sure but I just tell me what's going on funky yeah well it's tough a hundred fifty bucks for the for the hat and I think the PI threes are probably 35 or 40 student I'm not sure I paid for they'll be giving away soon yeah I know Jesus is trying to figure out what he's gonna do with his radio well I like what I'm seeing here so far I mean I have no experience with stuff like this but we say the documentation for someone that has not a lot of experience where digital was pretty easy to understand or kind of right right there was no part of the farthest back up again there was no setup that I don't remember doing any kind of setup for the WSJ TX it just yeah once I father whole scripts it just worked out of the box well the only thing is here tilt sunroof and asked or what I did you may have I've gone in and I've done the wind link part which are quite a lot of manual entries but I think it knew told what radio was and how is going to connect and my got the in assumes like via this register to be a USB to serial device and so I don't have any set up for that i basis plugged it in and right now and I don't remember sitting anything at all the configurations it just it just dude did what it does it changed the channel is right there you can see so you check a band it's gonna change channel for you so as far as WS GTX there wasn't any work ahead do that remember f LG G some reason I think I might have had a setting to do but it wasn't it wasn't very much and once you have it up and running yeah it's listing so I just fired it up and it's just listening right now and so I know this is kind of like going backwards but you have antenna to radio to the goal drawers box or whatever yeah and then that's connected to and then the Raspberry Pi can go like talks to the to the drawers box is that what's going on yeah the drawers pouch is on top of the Raspberry Pi that's what I couldn't show it it's wedged in the box top the Raspberry Pi so it it and the PI or one complete package mm-hmm so in my case the the radio is plugged into that one all cases everybody's array is going to be plugged into the audio port unless you're like surrender Peter it's got an example but the there's a drawers had right there so there's a spy so you can see where the to plug in there where there's on the PI there's a header oh sorry to even see that Dave was Vanna so just plugs in any of the Raspberry Pi it's a standard just plugs in the top called the GPIO plus so that draws plugs into the PI yeah yeah that's right the Hat does it sits on top of the Raspberry Pi gotcha nice a self-contained unit and like I said because the draws board supplies power to the PI you can give it 12 volts like you're partying radio from sorry for another like total noob question here's the Raspberry Pi is basically a little computer and operating system and what you're in what you're doing like what we're seeing on your screen here you're on just like your desktop or laptop computer and you're using I know it VNC is so desktop and you're just doing a remote desktop into the Raspberry Pi I'm the PI so what you're seeing right there is the PI desktop okay if I click the monitor if I plug the mantra in the PI you see the exact same thing no difference okay God ever played with raspberry pi like that my life so the Raspberry Pi is a Linux based computer and I'm sure ones other things for the really strange people but the main distributions are Linux and but they're pretty well fleshed out and like I said this you know linux to do the basic stuff you follow the commands and it loads everything am limas is required to do some of the deeper stuff but man it's not like Marco Reus Linux it's like you know there's simple stuff it even shows you type this thing it hit Enter key