Re: [UKHAS] Launch Announcement: University of Southampton Project BLAST - Saturday 2nd February 2013 - ~12:00 GMT

[Steve Aerospace]

Drat - I was thinking of putting up a flight from Elsworth Saturday lunchtime using 434.075MHz (then off to help jcoxon on the way back) - I thought it was gong to be free - I should have staked my claim earlier.  Is anyone using 434.300MHz?  We really need a frequency booking system as the calendar doesn't provide the info.

Also I find people reporting exact launch frequencies difficult to work out who is using a particular frequency by searching emails - can we come up with a standard way of reporting frequency.  I'm not sure what the exact frequencies are dial frequency? (if so what is the audio offset USB/LSB) centre frequencies? 

Is everyones receiver really that accurate at 434MHz?

Steve G8KHW

On 28 Feb 2013, at 23:38, Marco (projectBLAST) wrote:

Marco (projectBLAST)

Feb 20

Other recipients:

Dear All UKHAS Members,

since our last week launch was delayed, we are planning to have it this Saturday at 12pm. We are in touch with the people at RevSpace and we will make sure that the two launches will interfere as little as possible. By the time our payload is going to be high enough, theirs should have already landed.

I post below the launch information again.

We are also using a second tracker, frequency is going to be 434.075 10mW.

LAUNCH INFO:

We will be testing the basic configuration of SHARP (no solar arrays deployment mechanism), but we will have a smartphone on top to test if it records the data that it was programmed to collect, as it will be used as the primary bus for a cubesat that we are developing and we hope to mount on top of SHARP in the future. This will be also a good chance for us to get some experience. Andrew Cowan from last year will be present as well, to help us with the tracking of the balloon.

Our launch site will be the same: Dover’s Hill, Chipping Camden, Gloucestershire (OS Grid Ref: SP 136 396 – Google Maps http://maps.google.co.uk/maps?q=52.054687,-1.802187&hl=en&sll=52.054687,-1.802187&sspn=0.005641,0.016512&t=h&z=16). Feel free to come and join us.

We are using the same device that was built last year, with the same characteristics.
We will be transmitting 50 Baud RTTY on 434.650Mhz Upper Side Band (320Hz ish Carrier Shift) for anyone wanting to track (very much appreciated). An FLDigi Profile will be available as well.

We are using the same setup as well: we will have one launch team with a mini van and one chase team in a separate car.
Mission Control back in Southampton can be contacted by tweeting @ProjectBlast, emailing in...@projectblast.co.uk, talking to the Project Sharp Team members in the #ukhas IRC channel on the day or via phone numbers available nearer the time. Emergency contact details for both the launch team and chase cars will be available as well.

We also created a website www.projectblast.co.uk which will soon have further information about the whole project.

We are available for any further information you might require.

Regards,
The BLAST Team,
Department of Engineering and the Environment
University of Southampton

 

 

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Steve Randall

Random Engineering Ltd

st...@randomaerospace.com

+44 7802 242135

[Anthony Stirk]

Hi Steve,

I'm trying to keep the information on Spacenear.us info box as accurate as possible. 434.300 should be ok. Number10 may launch on 434.400 and there is an outside possibility that I may throw a Pico up for a giggle on 434.200.

Cheers,

Anthony

[Matthew Brejza]

You could always adjust the frequency of your NTX2 as described on the bottom of: http://ukhas.org.uk/guides:ntx2 . A well insulated NTX2 wont drift down by more than 10kHz?

[Adam Greig]

The calendar does actually provide the frequency information in the event description - you might need to click to view more details to see it.

Adam

[Costyn van Dongen]

I'm on 434.250 on saturday from about 10:00ish to 13:00ish.

Cheers

Costyn

[Steve Aerospace]

Thanks Adam - your right - but no sign of 434.075 being used in the current lot.

Steve

[Steve Aerospace]

Yep I've played with them too - trimming the frequency on an NTX2 also seems to change the amount of shift (and visa versa) - a pain to set up properly again and still no guarantee that a flight adjusted to a lower frequency launched ahead of one on a higher frequency won't clash (they shift up in frequency with decreasing temperature).  I'm also not convinced that toward the limit of adjustment they are more susceptible to the oscillator stopping in cold. 

Steve

[Steve Daniels]

Am setup to receive here hopefully it will be in range at some point. Small beam point toward Southampton.

 

If anyone has a flight that might head my way, please give me a heads up and will setup to track.

I am in Paignton, South Devon. Happy to help anyone with a flight that looks to be heading my way

 

Steve Daniels

Amateur Radio Callsign G6UIM

APRSISCE/32 Beta tester and WIKI editor http://aprsisce.wikidot.com

 

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