highaltitude.log.20150226

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[07:51] <Vaizki> Ian_, yes those commercials are a bit confusing but there's something very Finnish about the humor ;) And it's HELEN because HELsingin ENergia was the old name. the company is still owned by the City of Helsinki.
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[09:24] <infaddict> morning all
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[09:38] <infaddict> for packing out space inside payload, i've seen people using rigid foam (poly/stryo). is the softer foam also an option (upholstery type foam) or is there too much air to hold moisture?
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[09:45] <Vaizki> anything that is open-cell I wouldn't use
[09:46] <Vaizki> so polyethylene maybe but upholstery foam no
[09:48] <SpeedEvil> I don't see why not - if it's not too dense
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[10:01] <Vaizki> maybe I just hate foam. polystyrene is nicer. and when my payload is in the sea it won't soak water and sink :)
[10:03] <SpeedEvil> that's a reasonable point
[10:04] <daveake> The sinking won't matter once the salt water hits the electronics
[10:04] <Vaizki> I guess if I needed to fill empty space in a payload.. packing peanuts?
[10:04] <Vaizki> or maybe they are too static prone
[10:05] <SpeedEvil> you get antistatic packing peanuts
[10:05] <infaddict> mine is square payload box and my intention is to box in the 2 camera and then pack out all remaining space with solid foam leaving board nearer the top
[10:05] <infaddict> so 95% solid if possible
[10:05] <Vaizki> antistatic peanuts might be conductive
[10:05] <SpeedEvil> They're not meaningfully conductive
[10:05] <infaddict> or tasty
[10:05] <SpeedEvil> they are about as conductive as wood
[10:06] <Vaizki> the pink stuff probably is yes
[10:06] <Vaizki> don't use the black stuff :)
[10:06] <infaddict> is worth buying one of these cheap hot wire cutters or is there a better way to cut foam?
[10:06] <infaddict> styrofoam type stuff
[10:06] <Vaizki> do you have a lab psu?
[10:07] <infaddict> nope, nearest i have is an adjustable DC adaptor which i use for breadboard
[10:07] <Vaizki> you could use that and nichrome / steel wire?
[10:07] <Vaizki> ah
[10:07] <daveake> I have a hot-wire cutting table
[10:07] <daveake> probably a bit ott for 1 flight :)
[10:07] <Vaizki> but yes I would defintiely recommend hot wire
[10:07] <infaddict> haha yer daveake
[10:07] <infaddict> ive seen others heating up a knife
[10:07] <infaddict> but for £10 a cheap cutter might do enough for 1 flight
[10:07] <daveake> I have a mains-power knife too :/
[10:07] <infaddict> to begin with
[10:08] <daveake> I much prefer using XPS foam and a sharp knife
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[10:08] <Vaizki> xps? extruded?
[10:08] <daveake> yes
[10:08] <daveake> The pink or blue foam
[10:08] <daveake> not that horrible white stuff
[10:08] <Vaizki> right, building insulation
[10:08] <SpacenearUS> New vehicle on the map: 03DN4GB-11 - 12http://tracker.habhub.org/#!qm=All&q=DN4GB-11
[10:09] <infaddict> yep its the blue stuff i have
[10:09] <daveake> It's heavier but you need less as it's also stronger
[10:09] <daveake> and much nicer to work with
[10:09] <infaddict> my payload box is the white stuff but i dont need to cut that much (other than camera hole), but intend to pack/protect inside with blue stuff
[10:09] <infaddict> and antenna hole
[10:10] <daveake> I use the white stuff for premade boxes and balls
[10:10] <daveake> but anything custom I use the pink or blue sheets
[10:10] <daveake> White is better for packing as it's lighter
[10:10] <infaddict> yep i've got a 15cm x 15cm white box
[10:10] <Vaizki> EPS foam you want to wire cut yes
[10:10] <Vaizki> at least I do
[10:11] <infaddict> so wire is great for straight line cuts. what is i want to drill a hole, like for coax.
[10:13] <Vaizki> heat a pipe end and push it through?
[10:14] <daveake> drill a hole
[10:15] <daveake> Or push through something pointy
[10:15] <alxwntr> :)
[10:16] <infaddict> yer wasnt sure how the blue stuff takes drills... one way to find out!!
[10:16] <Vaizki> the blue stuff takes them ok I think
[10:16] <Vaizki> I thought you wanted to cut the EPS white box
[10:17] <alxwntr> it's good - it's not like the expanded polystyrene that just cracks to pieces
[10:18] <infaddict> yer i will be doing internals with blue stuff but i do need to cut the white box for 2 camera lense hols and a RF coax hole.
[10:18] <infaddict> guessing hot knife for that job
[10:19] <alxwntr> you need a flared hole for the lens, right?
[10:19] <alxwntr> or is it poking right through?
[10:19] <infaddict> my fluke the extended lense is spot on the thickness of the box
[10:20] <infaddict> so i think i just need a normal hole
[10:20] <alxwntr> oh handy
[10:20] <infaddict> i will build blue foam structure to hold camera in place, without pressing any buttons hopefully
[10:21] <infaddict> so 2 cameras and battery pack will go at bottom, then filler up to nearer the top and the main board/gps etc.
[10:22] <Vaizki> hmm I just realized I have some hollow punches inherited from my grandfather's workshop..
[10:22] <Vaizki> have to try them out on foam
[10:23] <daveake> Buy some cookie cutters
[10:23] <Vaizki> or just hobby knife it?
[10:24] <Vaizki> ok that could be a bit tough
[10:25] <alxwntr> Guess it depends on the lens size
[10:25] <alxwntr> if it's small (like #808) you could always try a drill on n offcut and see how it takes it
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[10:26] <daveake> It's surprisingly hard to cut a round hole neatly with a flat blade
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[10:26] <alxwntr> especially in that 'orrible stuff
[10:27] <alxwntr> quick Q about talking to uBlox:
[10:27] <alxwntr> the tutorial has two methods
[10:27] <alxwntr> it seems that sending 0xB5, 0x62, 0x06, 0x01, 0x08, 0x00, 0xF0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x2B
[10:28] <alxwntr> is the same as "$PUBX,40,GLL,0,0,0,0*5C"
[10:28] <alxwntr> is one better/faster?
[10:28] <alxwntr> why would you put all that in when the string is easy to understand?
[10:29] <alxwntr> and how does one convert between them?
[10:29] <Vaizki> you get confirmation for the ubx binary
[10:29] <alxwntr> and not for the string?
[10:29] <Vaizki> I don't think so
[10:29] <alxwntr> ah, that's useful
[10:30] <alxwntr> how does one form the binary sentences?
[10:30] <Vaizki> read the protocol spec
[10:30] <Vaizki> https://u-blox.com/images/downloads/Product_Docs/u-bloxM8_ReceiverDescriptionProtocolSpec_%28UBX-13003221%29_Public.pdf
[10:30] <alxwntr> I swear I did - couldn't find it
[10:30] <alxwntr> but I'll try again
[10:30] <Vaizki> 21.11.10 UBX-CFG-MSG (0x06 0x01)
[10:31] <Vaizki> that's the message you pasted to us
[10:31] <Vaizki> it's always 0xB5 0x62 followed by msg class & id (0x6 0x1)
[10:32] <alxwntr> yeah - I could find the IDs associated with, for example, GGA etc
[10:32] <alxwntr> but not how to form the sentences
[10:33] <Vaizki> 20.1.9 Messages Overview
[10:33] <Vaizki> When configuring NMEA messages using the UBX protocol message CFG-MSG, the Class/Ids shown in the
[10:33] <Vaizki> table shall be used.
[10:33] <Vaizki> there's your table of pseudo-classes and id's for NMEA
[10:34] <Vaizki> another option is to just configure the port you are using (serial or i2c) to not send out any NMEA at all
[10:35] <alxwntr> ah sorry, just realised you're sending section numbers
[10:35] <alxwntr> thanks a lot
[10:35] <Vaizki> yea I'm way too helpful
[10:35] <alxwntr> heh
[10:36] <Vaizki> cureently I use 21.11.16 UBX-CFG-PRT (0x06 0x00) to turn off NMEA for I2C (which I use to connect to the ublox)
[10:36] <Vaizki> but turning off nmea sentences individually works fine as well
[10:37] <Vaizki> (I leave them turned on for the serial so I have a debug port on the GPS to see how it's doing)
[10:38] <alxwntr> I'm using the R3 hardware serial port
[10:38] <infaddict> alxwntr: reason you would use the char array is you will likely be firing other hex messages (such as config or nav request) so having a routine/function to send it makes sense.
[10:39] <alxwntr> sure, as in the tutorial
[10:39] <infaddict> ideally you would also check for an ACK back from the gps that it received and processed the command
[10:39] <alxwntr> I can use the same function
[10:39] <infaddict> rather than fire and forget
[10:39] <infaddict> yep once you have a function to send, you can use it for any message
[10:42] <alxwntr> hmm. I have no idea what I'm doing with binary
[10:43] <alxwntr> I can see what you mean about message structure, but I wouldn't know how to populate it
[10:43] <infaddict> yep to find out the message contents you have a few options
[10:43] <infaddict> 1) is to install u-center windows software (free) and goto messages window
[10:43] <infaddict> it gives you correct HEX syntax for all commands
[10:43] <alxwntr> ahaaa...
[10:43] <alxwntr> that sounds helpful
[10:43] <infaddict> 2) find sample code on internet which does what you want and steal the messages
[10:44] <infaddict> for 2) tho sometimes they are out of date or incorrect
[10:44] <infaddict> but for disabling NMEA they are pretty short and standard
[10:45] <alxwntr> sure
[10:47] <alxwntr> ok, I've got u-centre running. I'll have a play
[10:48] <alxwntr> thanks
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[10:49] Nick change: Jacob -> Guest58726
[10:49] <infaddict> no probs. when u send a command, you will get a acknowledge command sentence back and you should see this (it will begin B5 62 in hex) coming back in your input data.
[10:50] <Guest58726> Is there anyway of calculating the antenna gain for a 1/4 wave antenna? and also the transmitting power
[10:50] <infaddict> if u dont see that ack there is a problem
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[10:51] <alxwntr> ok. Guess I have to hook up the gps to the pc...
[10:52] <alxwntr> currently just using the Arduino
[10:52] <daveake> Guest58726 in theory 2.14 dBi
[10:52] <infaddict> i just serial print the data coming into arduino
[10:52] <infaddict> never hooked my gps to PC
[10:53] <infaddict> are you using serial or i2c to communicate with gps?
[10:53] <alxwntr> serial
[10:53] <alxwntr> pins 0+1 on the R3 (I think)
[10:54] <infaddict> ok. does the R3 have another serial port you could use for debug?
[10:54] <alxwntr> nope, just the one
[10:54] <infaddict> ok
[10:54] <alxwntr> I had to use hardware serial because softserial uses interrupta
[10:54] <alxwntr> and it disrupted the rtty
[10:55] <infaddict> so its a challenge to serial print for debug as that will comm with gps
[10:55] <alxwntr> well, apparently not
[10:55] <alxwntr> I can still print to serial
[10:55] <alxwntr> when the gps is connected
[10:55] <alxwntr> which I didn't think I could do
[10:55] <daveake> yes you can
[10:55] <daveake> just don't send anything that the GPS might think is a command :)
[10:56] <alxwntr> sure :)
[10:56] <alxwntr> so, once the Arduino is hooked up, I can connect via u-centre?
[10:56] <infaddict> yer not ideal but should be ok
[10:56] <infaddict> no, just use u center to figure out hex commands
[10:56] <infaddict> then put those commands into your code
[10:57] <infaddict> run the code and serial debug the responses back
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[10:57] <alxwntr> sorry, I thought you meant send them to the gps with u-centre
[10:57] <infaddict> nope i just use u-center to help with commands, esp useful on long complex ones
[10:57] <Guest58726> daveake, do you have an equation for that?
[10:58] <alxwntr> sure - seems sensible
[10:58] <daveake> Guest58726 What are you trying to do?
[10:59] <Guest58726> im trying to make a link budget for the antenna and transmitters to calculate the size of my telemetry package
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[11:00] <daveake> "size if my telemetry package" ?
[11:00] <daveake> of
[11:01] <Guest58726> well just how much im able to transmit at a time
[11:01] <daveake> You're trying to see what max Tx data rate you can use?
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[11:03] <Guest58726> yes, im doing it in an academic setting so i need to provide reasons for all my choices
[11:05] <daveake> http://www.urel.feec.vutbr.cz/~raida/multimedia/en/10-4-A.pdf
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[11:18] <Guest58726> does the transmitter suggested in ukhas transmit at 10mW?
[11:19] <daveake> "ukhas" doesn't impose any particular power
[11:19] <daveake> In the UK there's a legal limit of 10mW ERP for the frequencies normally used here
[11:20] <Guest58726> whats ERP?
[11:20] <goopypanther> effective radiated power
[11:20] <daveake> You said you were calculating the link budget?
[11:20] <daveake> You can't do that without understanding ERP
[11:22] <Guest58726> well im trying to, its all very new to me
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[11:46] <tweetBot> @G7IGB: 144.390 FM APRS balloon heads for UK: The solar powered around-the-world high altitude balloon... http://t.co/wbyCgF7Tl4 #hamradio #ukhas
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[12:14] <Vaizki> ofcom is launching fighters already?
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[12:28] <YO9GJX> http://amsat-uk.org/2015/02/25/aprs-balloon-heads-for-uk/
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[12:32] <infaddict> so it will change freq then
[12:36] <lz1dev> !whereis k6rpt-11
[12:36] <SpacenearUS> 03lz1dev: 03K6RPT-11 was over 03North Atlantic Ocean 10(37.68424,-70.75001) at 0311296 meters about 0321 hours ago
[12:37] <lz1dev> !hysplit k6rpt-11
[12:37] <SpacenearUS> 03lz1dev: HYSPLIT for 03K6RPT-11 - 12http://spacenear.us/tracker/hysplit_cache/150226-10_12230_K6RPT11.gif
[12:38] <lz1dev> yeah that looks like 50/50 chance of actually going over the uk
[12:38] <Vaizki> and as usual, zero chance of coming into my range..
[12:39] <Vaizki> oh well, maybe some day
[12:40] <lz1dev> oh, they havent linked the tracker :(
[12:40] <lz1dev> oh well
[12:41] <Vaizki> 'murica you see
[12:43] <Guest58726> Is there a way of calculating the maximum data bit rate for an antenna
[12:44] <lz1dev> it will probably show up over spain around midnight
[12:44] <Guest58726> transmitter*
[12:48] <Geoff-G8DHE-Lap> data rate is dependent on bandwidth used - so you would need to define the bandwidth of the transmitter and then the communications protocol used to get a data rate
[12:48] <Geoff-G8DHE-Lap> Start from here perhaps http://en.wikipedia.org/wiki/Communication_theory
[12:52] <Vaizki> that's a long way
[12:59] <R34lB0rg> "it's complicated"
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[13:04] <Vaizki> Guest58726, I think a better approach is to explain your use case (data rate required, link budget etc) and collect ideas, then verify them with math & trials
[13:04] <Vaizki> but no, there is no magic excel file
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[13:10] <infaddic_> in habitat, if i define lat/long as integer with scaling, how does it know its position data? is it because i pick name of "latitude"?
[13:10] <Guest58726> i have created a link budget now but it doesnt seem to help with bandwidth
[13:10] <infaddic_> if i choose co-ordinate, there is no option for scaling
[13:18] <daveake> Guest58726 Have a look at http://www.mike-willis.com/Tutorial/PF13.htm
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[13:22] <ppp__> !flights
[13:22] <SpacenearUS> 03ppp__: Current flights: 03B-64 434.500 Contestia 64/1000 10(3afe)
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[13:27] <Guest58726> whats is a NetID?
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[13:48] <Vaizki> infaddict, yes chose latitude and longitude in payloadgen
[13:48] <Guest58726> what baud do people usually transmit at? is 300 overkill?
[13:49] <Vaizki> 50
[13:49] <Vaizki> well depends on your mode I guess
[13:50] <Guest58726> whats the advantage of 50?
[13:50] <Vaizki> aprs is 1200bps always and seems to work but it's on 144.800 where path loss is not so high as on 433MHz
[13:51] <Vaizki> I would say the advantage with 50 is that the "mark" or "space" in RTTY is held for a longer time and thus more clearly detected by the receiver
[13:52] <daveake> Generally more power is used for APRS
[13:52] <Vaizki> so can be picked up with less SNR
[13:52] <Vaizki> daveake, yea sorry forgot that
[13:53] <Guest58726> my packet is 600 bits so id considered 60 baud for convenience.
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[13:54] <daveake> I thought you were going to use maths?
[13:55] <daveake> I don't know if you're intending this flight to be tracked by others, but if so then 60 baud isn't convenient as it isn't a supported baud rate by dl-fldigi
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[13:57] <Guest58726> just tracking it ourselves, i have made a link budget. but im not sure where the data rate fits into it. I've found my link margin buts thats about it
[13:57] <Guest58726> ourselves=(me and my friend)
[13:58] <daveake> data rate affects bandwidth used
[13:58] <daveake> bandwidth affects noise level at receiver
[13:58] <daveake> that affects link budget
[13:59] <Guest58726> is that part of the receiver sensitivity?
[13:59] <daveake> no
[14:00] <daveake> We need an ed right now to take you through the maths
[14:00] <daveake> If you're looking for a practical answer, 50 baud gives plenty of range and gives a reasonably short packet time
[14:01] <Guest58726> even for a packet size of 600 bits?
[14:01] <daveake> You mentioned 600 bits which is a tad more than usual and I'd probably go up to 150 or 300Hz for that, to get the packet rate up
[14:02] <daveake> But you haven't said how often you need data
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[14:02] <daveake> For chasing, it's good to have a new position every 15 seconds, roughly, so you get a good final position before you lose the signal.
[14:03] <daveake> So I would keep the packet time down to 15, maybe 20 seconds
[14:05] <daveake> I don't know what's in your 600 bits, but I'll guess that it's environmental data. You could decide that you don't need that when the balloon is low. So you could just send position packets when low, and full 600-bit packets when high.
[14:05] <daveake> Anyway up to you
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[14:09] <Guest58726> so if we have 60 symbols per packet, and baud is symbols per second, and you suggest every 20 seconds isnt that 1200baud? im sorry if this is primative and annoying
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[14:10] <Geoff-G8DHE-Lap> If your using simple RTTY thenits 600/60 = 10 seconds or more standard 600/50 = 12 seconds
[14:10] <Geoff-G8DHE-Lap> plus a bit for start & stop symbols
[14:10] <daveake> and is this 600 data bits? or does that 600 include start/stop bits?
[14:10] <daveake> snap
[14:11] <Guest58726> includes the start and stop
[14:11] <Geoff-G8DHE-Lap> 50Baud or 50 bits per second is much easier to track and receive in that cse
[14:12] <Geoff-G8DHE-Lap> case*
[14:12] <daveake> yup 50 is fine for this
[14:12] <daveake> assuming ofc you don't need data more often for some undisclosed reasonn
[14:12] <daveake> -n
[14:12] <Guest58726> alright, and that'll transmit one packet every 12 seconds?
[14:12] <daveake> 600/50 = 12
[14:13] <Geoff-G8DHE-Lap> Yup one sentence, Packet has a slightly different meaning
[14:13] <daveake> Yes, so does this 600 bits include framing? e.g. the UKHAS format is $$somedata<Checksum><LF>
[14:13] <Geoff-G8DHE-Lap> but is frquently used as well
[14:14] <daveake> So remember you need to send that too
[14:14] Nick change: Mission-Critical -> MissionCritical
[14:14] <Guest58726> its everything include checksums and starts and stops
[14:14] <Guest58726> and all data
[14:14] <daveake> OK 12 seconds then
[14:16] <Guest58726> thank you for your help
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[14:22] <Vaizki> so if I have a flight doc and people select that in dl-fldigi, is it just used to configure the software or also transmitted to habitat which flight I'm tracking?
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[14:26] <Geoff-G8DHE-Lap> Its used by several things, it tells habitat what to store, dl-fldigi how to set the protocol, Calendat for human consumption ...
[14:26] <Geoff-G8DHE-Lap> Calandar*
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[14:28] <Vaizki> yes but my selection of the flight doc in dl-fldigi, is the flight doc id or payload id transmitted to habitat together with the packages?
[14:28] <Vaizki> sentences
[14:29] <Geoff-G8DHE-Lap> The Flight Doc groups the relevant Payload docs together, and then brodcasts the data to the relevant software
[14:31] <Vaizki> yes I have used dl-fldigi.. ok I was thinking of optimizing payload lenght and wondering what habitat uses to match incoming sentences
[14:31] <Vaizki> payload couchdb doc number or callsign from sentence
[14:32] <Geoff-G8DHE-Lap> I thought it used callsign to identify the Flight Doc which then loads the formats from the Payload docs .. ?
[14:33] <Geoff-G8DHE-Lap> but not had to consider that myself before
[14:33] <Vaizki> well my payload doesn't have a flight doc and it works so...
[14:33] <infaddict> yep i was told it doesnt need flight doc to appear
[14:33] <Geoff-G8DHE-Lap> maybe it uses both then
[14:33] <infaddict> just payload
[14:33] <infaddict> as when testing payloads they appear on the map dont they?
[14:33] <infaddict> without flight doc
[14:34] <Vaizki> infaddict, yes
[14:34] <infaddict> but they dont appear in the current flight list calendar
[14:34] <Vaizki> with flight doc they also appear in the active flights of fl-dldigi
[14:34] <infaddict> yep
[14:34] <Geoff-G8DHE-Lap> indeed
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[14:35] <Geoff-G8DHE-Lap> Probably best asked in #habhub
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[14:37] <Ian_> Guest58726 50 Baud is a standard communication rate. Like resistors there are preferred standard rates, for a good reason - interoperability.
[14:37] <Ian_> Did you say that you were from Sweden . . . ? :)
[14:38] <Vaizki> swedes don't like interoperability
[14:38] <Vaizki> they even drive on the right
[14:38] <Ian_> The lake awaits. It's possible to walk on water, but like good HAB projects, the design has to be frozen before you set out.
[14:39] <Vaizki> maybe he can send it over to us ;)
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[14:44] <infaddict> yep walking on water and coding from a spec are both easy.
[14:44] <infaddict> when both are frozen ;-)
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[15:00] <Ian_> I was thinking more of the type and recent Swedish flight experience really daveake, but thanks,
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[15:02] <daveake> "experience" is one word for that :/
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[16:25] <tweetBot> @daveake: BBC Stargazing Live event in Leicester, March 20th - Watch eclipse images from a #raspberrypi weather balloon http://t.co/1BZNyYECUW #UKHAS
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[16:26] <infaddict> my eclipse glasses arrived today ;-)
[16:26] <daveake> cool
[16:28] <Geoff-G8DHE> Ah ha so that's what the flights are about ;-)
[16:28] <daveake> "ESA Astronaut Paulo Nespoli comments “I’ve never been to Leicester" ... well this is a big thing for him then lol
[16:29] <Geoff-G8DHE> lol
[16:30] <infaddict> ha
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[16:31] <infaddict> but for setting them in sending msgs you dont need to worry as u-center does it all for you
[16:31] <infaddict> but if you need to receive them in a message u need to understand them
[16:32] <Geoff-G8DHE> Wasn't he the astronaut who tried to drown in space!
[16:33] <daveake> They got his name wrong :/
[16:33] <Geoff-G8DHE> no u in it
[16:35] <Geoff-G8DHE> Ah no that was Luca Parmitano
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[16:52] <Ian_> ping alxwntr
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[18:34] <SpacenearUS> New position from 03VEGA-I after 033 days silence - 12http://tracker.habhub.org/#!qm=All&q=VEGA-I
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[18:51] <Vaizki> uh oh.. KJ4TDM-1 looks like a Knoxville city center landing...
[18:52] <Vaizki> ooops sorry no
[18:53] <Vaizki> I still don't know how to use the tracker it seems...
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[19:03] <Lunar_Lander> hello
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[20:18] <fox123> Hi, please how frequency and mode DN4GB-11
[20:19] <DL7AD> i think it does aprs on 144.8
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[20:23] <Vaizki> since a lot of uk people here, anyone used the sdrplay sdr?
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[20:56] <infaddict> is there a separate channel for habhub/habitat questions?
[20:57] <infaddict> is it #habhub by any chance
[20:59] <Geoff-G8DHE> Indeed
[21:00] <infaddict> ok thx Geoff-G8DHE
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[21:04] <fox123> GL ALL
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[21:06] <tweetBot> @AMSAT_UK: #RSGB respond to #Ofcom 420-470 MHz review http://t.co/DgjTRPUEge #amsat #hamradio #hamr #cubesat #ukhas
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[21:18] <infaddict> basic question guys. if tx at 50 baud my normal sentence will take around 13 seconds to tx. what is point of updating GPS or other data more frequently than that?
[21:18] <infaddict> one reason might be to have a better "last good fix" position
[21:23] <daveake> #1 if you're going for altitude, you'll probably get a higher number
[21:23] <daveake> #2 if you're logging you'll have more data
[21:24] <infaddict> ok thanks dave. likely only 65 metres but it all counts!
[21:24] <daveake> I lost a record by about that once :/
[21:25] <infaddict> what is the current altitude record out of interest?
[21:25] <daveake> I think 44.4km
[21:25] <daveake> close enough
[21:26] <infaddict> yep
[21:26] <infaddict> sure i'll beat all the them in first launch ;-/
[21:27] <infaddict> i'll be happy with it not landing on a motorway and actually finding it again
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[21:50] <SpacenearUS> New vehicle on the map: 03Gabro01 - 12http://tracker.habhub.org/#!qm=All&q=Gabro01
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[22:33] <SpacenearUS> New vehicle on the map: 03PS-36 - 12http://tracker.habhub.org/#!qm=All&q=PS-36
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[22:40] <Steve1_> oh thank god
[22:40] <Steve1_> i thought i broke my ntx transmitter
[22:40] <Steve1_> but it lives to transmit another day
[22:40] <Vaizki> and you blamed god? that's a bit cheap?
[22:41] <Steve1_> anyone but myself
[22:41] <Vaizki> sounds reasonable
[22:42] <ProSpectre> night all
[22:42] <Vaizki> I screwed up with an NTX2 a couple of times, seems to be pretty robust
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[23:43] <Laurenceb_> https://www.youtube.com/watch?v=MGh5x_tjAB8&feature=youtu.be
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[23:46] <SpeedEvil> Interesting
[23:47] <SpeedEvil> What's that using? Ultrasound? Pressure?
[23:47] <SpeedEvil> Just INS?
[23:51] <Laurenceb_> yeah, with manual directions
[23:51] <Laurenceb_> and video to googles
[00:00] --- Fri Feb 27 2015