highaltitude.log.20120928

[00:03] <natrium42> does anybody need a canon sd700is with a broken screen?
[00:03] <natrium42> it functions fine and is supported by chdk by the looks of it
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[00:47] <nigelvh> Afternoon all.
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[01:47] <Nickolai_> hello all
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[01:48] <Nickolai> still here haha
[01:49] <DrLuke> aahhh... the wonders of irc!
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[02:31] <Nickolai> hi DrLuke, I saw your conversation last night with the newbie from the UK, sounds like you gave him some good advice
[02:31] <DrLuke> thanks :)
[02:31] <DrLuke> I am always happy to help atleast as much as other helped me
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[07:36] <fsphil> braainnss.. I mean, morning
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[07:37] <costyn> Upu: hi, I see you pinged me last night
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[07:45] <costyn> Upu: what did you find?
[07:45] <UpuWork> hey costyn
[07:45] <UpuWork> yes I think the antenna is goosed
[07:45] <UpuWork> though not sure why
[07:45] <costyn> darn
[07:46] <UpuWork> I've removed it and put a new one on this morning will test tonight
[07:46] <costyn> ok cool
[07:46] <UpuWork> did you say you have 2 doing the same thing ?
[07:47] <costyn> yea I can't figure that out. The one you have I wasn't particularly careful in handling it (didn't drop it or anything - but no special care), but the one I still have I took out of the box and was really careful with after we chatted and you said the antenna pads are quite fragile
[07:48] <costyn> but you test all units before you send them to customers right?
[07:48] <UpuWork> well yeah I've started to glue them before I post out
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[08:01] <eroomde> morning
[08:01] <eroomde> at work before 9
[08:01] <eroomde> who knew?
[08:01] <eroomde> it's like being at work at 10.30 but with fewer people
[08:02] <Darkside> heh
[08:02] <Darkside> hey all
[08:02] <fsphil> we start at 8 :(
[08:02] <Darkside> i am in aussie land
[08:02] <eroomde> hope you've had your jabs
[08:02] <Darkside> have been for almost 11 hours now
[08:02] <eroomde> fsphil: ouch
[08:02] <Darkside> lol
[08:02] <fsphil> welcome back,.. er.. away
[08:02] <eroomde> i start after i've proprerly done toast and coffee justice
[08:02] <eroomde> and then crawl into the shower
[08:03] <fsphil> I've been told I need jabs before I go there, but I don't think they have a spider vaccination
[08:03] <eroomde> i am designing a pcb
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[08:04] <fsphil> always a good thing eroomde
[08:04] <eroomde> yes
[08:04] <eroomde> especially this morning
[08:05] <eroomde> we have a spitfire flyover at 10.30 too
[08:05] <fsphil> ah sweet, I've seen one of those. they make a great noise
[08:05] <eroomde> a joyous merliny gargle
[08:05] <eroomde> i am doing a gps pcb
[08:05] <eroomde> for the radio front end
[08:06] <eroomde> slightly wider bandwidth than the ezcap dongles
[08:06] <eroomde> and more stable local clock
[08:06] <fsphil> I'll buy one
[08:07] <eroomde> it's a bit pooey on its own, needs some way of plonking the sampled dataz into some form of storage
[08:07] <fsphil> can't push them over usb?
[08:07] <eroomde> if i put usb hardware on yup
[08:07] <eroomde> but this is more to trial a chipoid
[08:07] <Darkside> eroomde: what resolution samples?
[08:07] <eroomde> and i'm using my datalogger to sample the chip output
[08:08] <eroomde> 3 bit i think
[08:09] <eroomde> nope
[08:09] <eroomde> i am wrong
[08:09] <eroomde> 2 bits, on each of I and Q
[08:09] <eroomde> or 3 for I
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[08:17] <eroomde> searching for this chip on the net is quite amusing
[08:17] <eroomde> "Hi, im noob on arduino development, and im looking for some clues, i got a MAX2769 yesterday from MAXIM, just 2 samples, and im wondering if exist some help to connect to arduino or if someone had some experience with this micro(max2769)."
[08:17] <eroomde> on the arduino forum
[08:17] <eroomde> poor fella
[08:17] <eroomde> he thinks it's a whole gps rather than a front-end rf downcoverter
[08:18] <zyp> oh, I've talked to people believing that too
[08:19] <fsphil> so the plan is to record the output of the converter and do the processing later?
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[08:29] <eroomde> fsphil: sorry for delay
[08:29] <eroomde> yes that
[08:29] <fsphil> np, it's been a pretty laggy morning in general
[08:31] <eroomde> but yes that's the plan
[08:31] <eroomde> well, the real plan is fusion with inertial sensors
[08:32] <costyn> eroomde: so this MAX2769 is basically an RF receiver which sends on it's signals to another chip for processing? I can see how people would get confused by the page on Maxim.com
[08:32] <eroomde> so the inertial sensors can help you track the sattelite state (phase, freuqnecy 9the derivative of phase) and rate of change of frequency, and the same 3 things for the codes)
[08:32] <eroomde> and the sattelite positions can reciprocally help you track the state of the inertial sensors by removing biases and so on
[08:32] <eroomde> from an entropic point of view, it's just exploiting the mutual information
[08:32] <eroomde> costyn: yes correct
[08:33] <eroomde> it basically spits out baseband IQ of the gps frequency, a few MHz wide
[08:33] <eroomde> well not baseband, but a easy low IF like 3Mhz
[08:34] <fsphil> so the sensors help the software keep a gps lock
[08:34] <fsphil> that's cute
[08:34] <eroomde> yes
[08:35] <eroomde> and vice versa
[08:35] <eroomde> you basically set it up so you have a big vector called 'state'
[08:35] <eroomde> which is positions, velocities, accelerations, attitiudes and their rates and their derivatives, and a bunch of other stuff
[08:36] <eroomde> and whack anything that measures something to do with some of the state elements into a big vecotr of measurements
[08:37] <eroomde> and then you write down a whole bunch of differential equations about the system (how it moves) and how the measurements relate to the state
[08:37] <eroomde> in matrix form
[08:37] <eroomde> so that's a state-space model, which is a lovely and powerful technique for modelling all sorts of things
[08:37] Action: costyn is getting flashbacks to university math courses :P
[08:37] <eroomde> and then you can use state space models as the basis of hidden markov models, which let you predict future states from the current state and some measurements, in a probabalistic way
[08:38] <eroomde> the most common and sample example of an HMM is probably the Kalman Filter
[08:38] Action: daveake isn't because it was fortunately too long ago
[08:38] <eroomde> which you can use when the measurement noise and the process noise (the uncertainty in the rpediction step) are gaussian
[08:38] <eroomde> and when the dynamics are linear
[08:39] <eroomde> but there are more sophisticated/flexible techniques that you can use when those assumptions aren't true
[08:39] <eroomde> i'm looking at a particle filter
[08:39] <eroomde> which is very general and quite powerful
[08:40] <costyn> and where are you going to use all this for?
[08:40] <costyn> specifically the pcb you are designing?
[08:41] <eroomde> well, we'll fly it on our rocket
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[08:41] <eroomde> but really a combined raw gps and intertial logger could be put on anything
[08:41] <eroomde> and used to get very accurate reconstruction of the state of soemthing
[08:41] <costyn> very cool
[08:41] <eroomde> for example, gps sats send a chip every ms
[08:41] <eroomde> so in theory one can get 1khz position updates from gps
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[08:42] <eroomde> which is a very nice thing if you're looking at a very dynamic system, such as say a parachute deploying at high speed
[08:42] <costyn> current limits are the processing of hte chips by the reciever?
[08:42] <eroomde> correct
[08:43] <eroomde> that, and the receivers make all sorts of assumptions about your dynamics
[08:43] <eroomde> eg that you're not doing more than 1G
[08:43] <eroomde> or whatever
[08:43] <costyn> heh
[08:43] <costyn> so those assumptions all already built into current gps chips like ublox etc
[08:43] <eroomde> and they use a kalman filter onboard to estimate your position by looking at what the sats are saying and seeing if that makes sense given its onboard model of your dynamics
[08:43] <eroomde> and combining the two
[08:44] <eroomde> but in something like a rocket that's no use, it's all wrong
[08:44] <eroomde> whereas if you have say accelerometers, you actally know what your dynamics are at a given time
[08:44] <costyn> it makes sense :)
[08:44] <eroomde> and you can use the accelerometer values as part of the position estimate, along with the gps singals
[08:45] <costyn> but you have to do your own gps calculations to make use of your other sensor readings correct?
[08:45] <eroomde> correct
[08:45] <eroomde> so that's why i want the raw gps signals
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[08:47] <eroomde> so i can do the sensor fusion at a very deep level, before information is lost by any other assumption-led filtering
[08:47] Action: costyn understands
[08:48] Action: costyn is reading up on Markov, Kalman and Bayes :)
[08:48] <costyn> my final project at uni was with ensembles of naive bayes classifiers, but that was almost 10 years ago
[08:48] <eroomde> even tracking the sattelite signals is improved with the inertial data, so some people say pseudoranges are 'raw' but really they're not, because a pseudorange is where you think a gps code starts within your sampling window. and that is just an estimate, which thus can be improved with more information
[08:48] <UpuWork> I just managed to apply the soldering iron to the end of my finger :/
[08:48] <eroomde> it's sort of epistemically true
[08:49] <eroomde> i hate that UpuWork
[08:49] <eroomde> get it in water for a couple hours
[08:50] <costyn> eroomde: aren't there commercially available units that do what you want already? seems like something that is applicable in a lot of areas
[08:50] <eroomde> not that i can see
[08:50] <eroomde> just the front-end chips
[08:51] <eroomde> + also you really need to do the filtering yourself
[08:51] <costyn> strange. combining inertial refernce with gps seems like an obvious way to increase accuracy
[08:51] <eroomde> with knowledge of your specific dynamics
[08:52] <eroomde> costyn: i think there are some very expensive military units that will do inertial + gps
[08:52] <eroomde> but they still make assumptions
[08:52] <costyn> right
[08:52] <eroomde> I'm looking at about £200 parts cost
[08:57] <costyn> how will you calibrate/test it when it's done?
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[08:58] <eroomde> costyn: don;t really need to calibrate it as such because biases should be tracked automatically by the particle filter
[08:59] <eroomde> but have some ideas for testing
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[08:59] <eroomde> using computer vision
[09:01] <eroomde> i'm interested in using this stuff to detect discrete changes in model dynamics using some stuff i worked on on my masters, which is bayesian changepoint detection
[09:01] <eroomde> and there are some nice ways to test that
[09:01] <eroomde> like dropping the package from a building onto the ground
[09:01] <eroomde> which is a fairly discrete change in dyanmics
[09:02] <costyn> interestig
[09:11] <eroomde> costyn: the other plan is to retransmit the gps stuff from something you're not going to get back
[09:11] <eroomde> eg a rocket going out into the sea
[09:11] <eroomde> just have it have a local gps receiver, which it rebroadcasts at some other freq
[09:12] <eroomde> and then you on the ground receive that other freq, from which you can decode
[09:12] <eroomde> you need to get the inertial data down some other way, but there are ways and means
[09:12] <eroomde> i figured out a way to get the rockets time stamp embedded in the rebroadcast analogue gps signal
[09:13] <eroomde> which would eb the same timestamp used on another telemetry frequency for the inertial data, which would be much lower bit-rate
[09:13] <eroomde> 9ch of 16 bits sampled at 2khz is only 300ish kBaud
[09:13] <eroomde> which one can do digitally more easily than gps, which would be a pig to do digitaly
[09:23] <costyn> eroomde: clever :)
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[09:29] <DanielRichman> ~.
[09:29] <DanielRichman> ignore that
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[10:00] <kokey> if you want to execute your home directory that's your own business
[10:01] <Randomskk> idk about you but my username is `.' :P
[10:02] <daveake> http://xkcd.com/327/
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[10:06] <costyn> daveake: always good for a grin
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[10:32] <griffonbot> Received email: Jon Sowman "Re: [UKHAS] Mailing List Plans"
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[13:57] <Lucasbuck> could anyone help me with a question i have regarding differences between NTX2 434.075Mhz and NTX2 434.650Mhz radio modules
[13:57] <costyn> Lucasbuck: what do you want to know?
[13:57] <Lucasbuck> I'm looking at acquiring one for uk testing and eventual flight, and just wanted to know if the only difference was radio freq.
[13:57] <Lucasbuck> :)
[13:58] <costyn> Lucasbuck: yep
[13:58] <Lucasbuck> cool
[13:58] <Lucasbuck> is there any "preferred" choice between the two within ukhas?
[13:58] <costyn> I believe one is for UK and the other is for mainland EU
[13:58] <Lucasbuck> isn't the uk non legal one -> HX1 144.800Mhz?
[13:59] <Lucasbuck> and the other two are suitable in uk
[13:59] <Lucasbuck> im hafl guessing here
[13:59] <Lucasbuck> new to radio :)
[13:59] <costyn> trying to find it in the wiki :)
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[14:00] <costyn> Lucasbuck: hmm well not sure, http://www.radiometrix.com/content/ntx2 says 433 is EU and 458 is UK, but pretty much everyone here uses the 434 modules
[14:01] <costyn> Lucasbuck: if you stick around I'm sure someone else will pop in and give an answer
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[14:01] <Lucasbuck> 434 ok
[14:01] <jonsowman> Lucasbuck: 144.8 is APRS and an amateur band, you may not use it airborne in the UK
[14:01] <daveake> Both fine for UK
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[14:01] <costyn> Lucasbuck: there you go :)
[14:01] <Lucasbuck> awesome :)
[14:01] <daveake> (I mean the 075 and 650 NTX2)
[14:02] <Lucasbuck> is there any preference between the two?
[14:02] <jonsowman> Lucasbuck: we normally recommend 434.650 rather than 434.075 if you have the choice
[14:02] <Lucasbuck> cool
[14:02] <jonsowman> there is more noisy towards the bottom end of the band
[14:02] <Lucasbuck> awesome
[14:02] <jonsowman> .650 tends to be quieter
[14:02] <daveake> Just use whichever has least local noise for you
[14:02] <jonsowman> but both are legal :)
[14:02] <Lucasbuck> ive not dont radio comms on this level before
[14:02] <Lucasbuck> most hardcore was deploying long range outdoor 2.4 and 5Ghz radio
[14:03] <Lucasbuck> but that had nice network stacks to send data (once deployment issues were sorted)
[14:03] <costyn> well 10mW isn't that hardcore :)
[14:03] <jonsowman> people with no radio experience at all can put together HAB payloads - you'll be fine
[14:03] <Lucasbuck> is for me :)
[14:03] <Lucasbuck> awesome
[14:03] <Lucasbuck> i can do arduino/c
[14:03] <jonsowman> that will get you a long way
[14:03] <jonsowman> everything else you can find on the UKHAS wiki
[14:03] <Lucasbuck> i came to ukhas conf, im inspired to put a rock up my arse (no pun)
[14:03] <Lucasbuck> and get cracking
[14:04] <costyn> Lucasbuck: come back here if you have more questions (or lurk and learn lots - including stuff you never knew you wanted/needed to learn)
[14:04] <Lucasbuck> i just want to first get some radio comms and recv equipment
[14:04] <Lucasbuck> and then assist in tracking others payloads
[14:04] <costyn> Lucasbuck: good plan :)
[14:04] <Lucasbuck> get to grips with all that and df-dldigi
[14:04] <jonsowman> Lucasbuck: if you can, turning up to watch/help someone else's launch is a veyr good learning experience
[14:04] <Lucasbuck> then come on a launch or two
[14:04] <Lucasbuck> ^
[14:04] <Lucasbuck> yup
[14:04] <jonsowman> where are you based?
[14:04] <Lucasbuck> then i can see how not to blow myself up
[14:04] <Lucasbuck> south east london
[14:04] <Lucasbuck> WEST
[14:05] <Lucasbuck> sout west!
[14:05] <Lucasbuck> when i learn where i live
[14:05] <costyn> :)
[14:05] <jonsowman> we have launches fairly regularly in Cambridge
[14:05] <Lucasbuck> " awesome "
[14:05] <Lucasbuck> cool
[14:05] <jonsowman> if you want to come to one, let me or Randomskk know
[14:05] <Lucasbuck> im more than up for coming up to lend car / driving / radio skills (when obtained) for tracking
[14:05] <Lucasbuck> cool, thanks jonsowman
[14:05] <Lucasbuck> will do indeed
[14:05] <Lucasbuck> next Q for you all :)
[14:05] <Lucasbuck> radio tracking gear
[14:06] <Lucasbuck> ive seen that a yagi? is a good place to start
[14:06] <Lucasbuck> and ebayed them
[14:06] <Lucasbuck> suggestions or tips are welcome that are not on teh wiki :)
[14:06] <jonsowman> the Diamond A430 is an excellent Yagi
[14:07] <jonsowman> make sure you get one with a fitting that matches your receiver, or with an adaptor
[14:07] <jonsowman> something around the 11-14dBi mark is good
[14:07] <jonsowman> and also small enough to be portable
[14:07] <jonsowman> as you get towards 20dBi they tend to get too big
[14:08] <jonsowman> brb
[14:08] <hibby> How about vertically stacked handheld antennas? Again, too big, but perhaps more manageable.
[14:08] <Lucasbuck> cool
[14:08] <costyn> jonsowman: a crossed yagi is so you can receive both polarizations?
[14:09] <costyn> http://www.ebay.co.uk/itm/70cm-13-ELEMENT-CROSSED-YAGI-ANTENNA-430-440MHz-/300710459607
[14:09] <costyn> (never seen one before)
[14:09] <jonsowman> costyn: you tend to have two cables coming from them, as if they were seperate
[14:10] <costyn> ah ok
[14:10] <jonsowman> you use the appropriate one
[14:10] <hibby> we had switchable ones at the station in the uni - two cables out, so the polarization could be selected
[14:10] <jonsowman> alternatively you can use a harness to turn them into circular polarised
[14:10] <costyn> circular = any polarization orientation?
[14:10] <jonsowman> no, the transmitter must also be circularly polarised
[14:10] <hibby> circular polarization is it's own thing, iirc.
[14:10] <jonsowman> and in the same sense
[14:11] <costyn> ok
[14:11] <jonsowman> "right hand" or "left hand" circular polarisation
[14:11] <jonsowman> the standard for HAB was set as "right hand", if anyone ever uses it
[14:12] <jonsowman> if you use a linearly polarised antenna to receive a CP signal you incur a 3dB loss
[14:12] <jonsowman> anyway, actually brb
[14:12] <costyn> jonsowman: thx, got it :)
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[14:16] <eroomde> daveake: this is true
[14:17] <eroomde> i am not making this up
[14:17] <eroomde> i promise
[14:17] <eroomde> there is an islamic butchers in harrow
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[14:17] <eroomde> they are big lionel ritchie fans
[14:17] <eroomde> the store is called
[14:18] <eroomde> Halal, is it meat you're looking for?
[14:18] <hibby> :D
[14:18] <jonsowman> hahah
[14:18] <jonsowman> excellent
[14:18] <costyn> hahahaha
[14:18] <Laurenceb> thats what she said
[14:19] <daveake> eroomde lol
[14:19] <kokey> I once drove around Kensal Rise area, and this car was in the traffic next to me, an old Toyota hatchback which appeared to be a bit of a mobile shrine to Freddy Mercury
[14:19] <kokey> with trinkets, and what looked like straw or netting, and pictures of Freddy Mercury
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[14:23] <daveake> 2 shops in Reading ... https://maps.google.co.uk/maps?q=garrard+street+reading&hl=en&ll=51.453539,-0.974629&spn=0.013091,0.02738&sll=53.800651,-4.064941&sspn=12.672499,28.037109&hnear=Garrard+St,+Reading+RG1,+United+Kingdom&t=m&z=16&layer=c&cbll=51.453585,-0.974457&panoid=RMo8PjXUeM0mUE-OkobKXQ&cbp=12,355.84,,0,-4.51
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[14:34] <Dan-K2VOL> any good hackerspaces or balloon clubs in AMsterdam?
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[14:36] <hibby> no, but I know of some fine coffe shops...
[14:36] <kokey> I think lionel ritchie was banned by the censorship board in South Africa for a while
[14:36] <kokey> my girlfriend refers to the UKHAS as the balloon club
[14:38] <costyn> Dan-K2VOL: my hackerspace is in the Hague. Amsterdam has one but it's not very active and in the middle of a move
[14:39] <costyn> Dan-K2VOL: the hague one is apparently one of the biggest and most active in NL
[14:39] <costyn> Dan-K2VOL: but i've never been to any others, so I can't really compare
[14:40] <Dan-K2VOL> cool cotyn
[14:40] <Dan-K2VOL> costyn!
[14:40] <Dan-K2VOL> I'm in Amsterdam for the weekend
[14:41] <Dan-K2VOL> if you happen to come by I'll buy you a beer, I really appreciated your help on mission control
[14:41] <costyn> Dan-K2VOL: are you there already?
[14:41] <Dan-K2VOL> I am!
[14:42] <costyn> I am too, but at work :)
[14:42] <kokey> shell does R&D around den haag so I would imagine there are some geeks about
[14:42] <costyn> kokey: most of my hackerspace fellow members are IT guys like myself
[14:43] <kokey> I know this since I considered a FreeBSD job there, like 6 years ago or so
[14:43] <kokey> or OpenBSD
[14:43] <kokey> can't remember now
[14:43] <costyn> Dan-K2VOL: where are you in Ams?
[14:44] <costyn> kokey: I'm not very fond of *BSD
[14:44] <Dan-K2VOL> near Central Station
[14:45] <costyn> Dan-K2VOL: hmmm would be cool to get a beer, but then I'd have to ask the wife to feed and put the kids to bed by herself :)
[14:45] <Dan-K2VOL> haha no problem
[14:45] <costyn> Dan-K2VOL: can you give me an address? lemme see if I can park there
[14:46] <costyn> (or coordinates)
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[14:47] <kokey> costyn: I used to be into *BSD, now I seem to do mostly Linux
[14:47] <kokey> and a little AIX and Solaris
[14:48] <eroomde> ESTEC (ESA's research and PM campus) is in nordwijk just outside den haag
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[15:21] <griffonbot> Received email: gonzo_ "[UKHAS] Ofcom Update: GPS Jamming Notice"
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[15:48] <Lucasbuck> another Q for you all, what is a fair price for a :
[15:48] <Lucasbuck> http://www.ebay.co.uk/itm/Yaesu-FT-817ND-Used-From-LAMCO-Barnsley-/110954770099?pt=UK_Mobile_Phones_Communication_Ham_Radio_Receivers_Transceivers&hash=item19d56b6eb3#ht_1614wt_1211
[15:48] <Lucasbuck> or similar quality 2nd hand?
[15:48] <UpuWork> its a good unit
[15:48] <UpuWork> they are alway quite expensive though
[15:49] <UpuWork> Icom IC-R10 isn't a bad idea either
[15:49] <UpuWork> http://www.ebay.co.uk/itm/Icom-IC-R20-hand-held-scanner-from-LAMCO-Of-Barnsley-/110916694423?pt=UK_Mobile_Phones_Communication_Ham_Radio_Receivers_Transceivers&hash=item19d3267197
[15:49] <UpuWork> also cheaper
[15:49] <Lucasbuck> looking
[15:49] <UpuWork> http://www.radioworld.co.uk/catalog/second_hand_ic-r20_icom_scanner_wideband-p-4279.html?osCsid=066f5574a34455251883d1c72c75a075
[15:50] <kokey> I couldn't find an R10 when I was looking last time
[15:50] <kokey> I suppose people hold onto them
[15:50] <Lucasbuck> due to size and portability?
[15:51] <UpuWork> yep
[15:51] <UpuWork> FT-817 is a great radio
[15:51] <UpuWork> it can TX too if you have a license
[15:52] <Lucasbuck> nice
[15:52] <Lucasbuck> what price range is good for a 2nd hand one
[15:52] <Lucasbuck> + the battery inside, if its nearing its end of life, it is possible to replace?
[15:52] <UpuWork> 817's are always fairly expensive they hold their value well
[15:53] <UpuWork> yes you can they are about £35-£55 depending if you go for a genuine one
[15:53] <UpuWork> if its just for testing get a SDR for the moment
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[15:55] <nosebleedkt> hey hi !
[15:56] <UpuWork> hi nosebleedkt
[15:56] <nosebleedkt> what was the UK site where we buy the balloons?
[15:56] <UpuWork> www.randomengineering.co.uk
[15:56] <nosebleedkt> yes thankx
[15:57] <nosebleedkt> I asked people from my fanpage
[15:57] <nosebleedkt> if they find it a good idea to donate
[15:57] <nosebleedkt> for my next flight
[15:57] <nosebleedkt> and they seem very positive
[15:57] <UpuWork> fair enough :)
[15:57] <UpuWork> ok I'm off home bbl
[15:58] <Lucasbuck> yeah its for testing atm
[15:59] <Lucasbuck> but i'de like to help in tracking too
[15:59] <Lucasbuck> as it will help me skill up for my own flight
[16:02] <DrLuke> Lucasbuck: why don't you consider a SDR dongle? they only cost 15$-ish
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[17:59] <Lunar_Lander_> hello
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[18:23] <Upu> ping costyn
[18:26] <natrium42> hey upu :)
[18:27] <Upu> hey natrium42 :)
[18:27] <Upu> if I'm ever taken hostage
[18:27] <Upu> can I have James not you doing negotiations pls :)
[18:27] <natrium42> trololol :D
[18:28] <Upu> It made us chuckle
[18:28] <natrium42> i am canadian, it's fine
[18:28] <Upu> We just noticed they have a lighest payload category
[18:28] <Upu> which we'd have the top 20 in
[18:28] <natrium42> 3rd party, etc
[18:29] <Upu> but they seem to be rewriting the rules as Team GB launched 6 balloons at the Olympics as viewed by over 1 billion people
[18:29] <daveake> ^^ I said that would happen
[18:29] <fsphil> you did
[18:30] <Upu> all they need to do is stipulate launches have to be done under a blue sky and Team GB wouldn't stand a chance
[18:30] <fsphil> visual confirmation of burst
[18:30] <natrium42> haha, should send a proposal of other categories
[18:31] <natrium42> non-technical ones
[18:32] <fsphil> "cutest teddy"
[18:32] <daveake> "launcgh location as a zip code2
[18:32] <natrium42> most artistic payload
[18:32] Action: Upu pats Dave
[18:32] <Upu> best pink payload launched in the rain by two silly people
[18:32] <daveake> :)
[18:32] <Upu> Dave n Ants Aerospace UK Gold medal
[18:33] <fsphil> coldest launch site
[18:33] <daveake> wettest recovery
[18:33] <Upu> most fish and chips eaten after a recovery
[18:33] <fsphil> hah
[18:33] <Upu> that chips not fries
[18:33] <fsphil> nah fries are not as good
[18:33] <Upu> oh we could have fun with this
[18:35] <natrium42> us hab is stagnating
[18:35] <natrium42> at least wbelk is doing something interesting
[18:35] <Upu> Bill and Dan are doing interesting stuff
[18:35] <Upu> CNSP is
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[18:41] <chris_99> you guys seen this https://www.eclipserocketry.com/catalog/product_info.php?cPath=21_22&products_id=56
[18:42] <chris_99> so it's powered by nitrous oxide seemingly?
[18:52] <Upu> costyn:
[18:52] <costyn> Upu: that works :)
[18:52] <Upu> ok :)
[18:53] <natrium42> omg, reading comprehension fail...
[18:57] <natrium42> Upu: i should make your nick appear pink, right now it's red :D
[18:57] <Upu> lol
[18:59] <natrium42> dave's is pink though
[18:59] <Upu> thats red really :)
[18:59] <natrium42> i know! it's reversed
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[19:02] <Upu> Nothing silly about the work they are doing at all. They have created packages at weights in the ounces and methods and procedures for launching balloons no one thought possible. I applaud every one of those guys across the pond.
[19:02] <daveake> What's an ounce? :)
[19:03] <Upu> its like a fat gram
[19:03] <daveake> ah
[19:03] <natrium42> Upu: < natrium42> omg, reading comprehension fail...
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[19:04] <Upu> yep I see what you mean now
[19:05] Action: costyn doesn;t
[19:06] <DanielRichman> costyn: I didn't either, until I found this: http://groups.yahoo.com/group/GPSL/message/12288 (and the replies linked below it)
[19:07] <Upu> yeah sorry should have explained
[19:08] <Upu> For some reason Keith Kaiser who runs ARHAB seems to thing we don't launch big balloons over here
[19:08] <daveake> despite the content of his altitude table
[19:08] <Upu> how he thinks we get mylar to 44k is beyond me but hey ho
[19:10] <daveake> The registration form has "balloon type" as one of the fields
[19:10] <Upu> I only submitted a latex flight last week, then cancelled it one day later
[19:10] <Upu> yay weather
[19:16] <costyn> Upu: good weather/bad weather?
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[19:16] <costyn> natrium42: and I see what you mean about reading comprehension fail :)
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[20:19] Nick change: cuddykid_ -> cuddykid
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[20:45] <griffonbot> Received email: Dave B "=?ISO-8859-1?Q?Re=3A_=5BUKHAS=5D_=A0Mailing_List_Plans?="
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[21:02] <natrium42> good point about the filtering
[21:02] <natrium42> what i was thinking too
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[22:16] <griffonbot> Received email: Kevin Walton "[UKHAS] Re: Mailing List Plans"
[22:16] <griffonbot> Received email: Ali al-Azzawi "Re: [UKHAS] Re: Conference 2012"
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[23:53] <griffonbot> Received email: steamfire@gmail.com "Re: [UKHAS] Mailing List Plans"
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[00:00] --- Sat Sep 29 2012