International Space Colloquium at Guildford

AMSAT-UK FUNcube Mission Patch Rev4 20100609The AMSAT-UK International Space Colloquium will be held on July 24-26 at the Holiday Inn, Guildford, GU2 7XZ, UK.

Among the speakers will be:
Peter Guelzow DB2OS with an update on AMSAT-DL projects, including the Phase 4 satellite
Chris Brunskill, formerly of Surrey Space Centre (SSC), now working at the Space Catapult at the Harwell Campus. He will be presenting an extremely novel project aimed at schools and education
• It is hoped the BATC will be able to demonstrate live Digital TV reception from the International Space Station, using the Ham TV system
Drew Glasbrenner KO4MA, from AMSAT North America will be attending, and presenting the latest news of the FOX satellite(s) due for launch later this year, and also on their Phase 4 project

The Colloquium is open to all further information is at http://amsat-uk.org/colloquium/

Samantha Cristoforetti IZ0UDF with ISS HamTV Transmitter

Astronaut Samantha Cristoforetti IZ0UDF with the HamTV transmitter in the ISS Columbus module

Phase 4 Spacecraft Frequencies

Graham G3VZV and Bob N4HY at Friedrichshafen June 2015

Graham G3VZV and Bob N4HY at Friedrichshafen June 2015

At the Hamfest event at Friedrichshafen held during last weekend, more information was provided about the exciting new Phase 4 amateur satellites presently under construction

P4A – This is a hosted payload on the geostationary spacecraft Es’hailSat 2. This spacecraft will be located at 26 degrees east. Launch is expected in late 2016 with operations commencing shortly thereafter. This spacecraft will carry two amateur radio linear transponders. One will consist of a 250 kHz wide linear analogue transponder and the other will be a transponder for experimental digital modulation with an 8 MHz bandwidth.

The proposed frequency plan for this spacecraft is:

Narrowband transponder:
Uplinks: 2400.050-2400.300 MHz
Downlinks: 10489.550- 10489.800 MHz

Wideband transponder:
Uplinks: 2401.500 – 2409.500 MHz
Downlinks: 10491.000 -10499.000 MHz

P4B – This is a hosted payload on a US geosynchronous spacecraft. This spacecraft is expected to be initially located over America. The transponder will use digital modulation schemes with FDMA up and TDMA down. In addition, there will be linear transponder facility. Ground station hardware is already well developed and the launch is expected to take place in mid 2017.

The proposed frequency plan for this spacecraft is:

Uplinks: 5655-5665 MHz
Downlinks: 10455-10465 MHz

Further, similar, High Earth Orbit, projects were also mentioned during the meeting. These will also use downlink frequencies in the 10 GHz band in the Amateur Satellite Service.

Geosynchronous Amateur Radio Satellites http://amsat-uk.org/satellites/geosynchronous/

AMSAT-UK
http://twitter.com/AmsatUK
http://facebook.com/AmsatUK

$50SAT 19 months in Space and still working

Yaesu handheld and $50SAT 1.5U PocketQube

Yaesu handheld and $50SAT 1.5U PocketQube

Michael Kirkhart KD8QBA provides an update on the $50SAT amateur radio spacecraft which measures just 5x5x7.5 cm.

Sunday, June 21, 2015 marked the 19 month anniversary of the launch of $50SAT/MO-76/Eagle-2.  The good news is it still operating.  The bad news is the power situation has been degrading, with an apparent step change on or near May 12, 2015, followed by another on Tuesday, June 23, 2015.  The last full telemetry capture made here in EN82 land was on Wednesday, May 27, 2015, and the last time it was heard was on Friday, June 6, 2015.  I continued to attempt to listen for it for another week or so, and heard nothing.  Has anybody heard it since then?

At this point, I have been monitoring it using Anton’s (ZR6AIC) WebSDR as it makes daytime passes over South Africa.  These occur between 7:30 and 9:00 UTC, which translates to 3:30 and 5:00 AM here in EN82 land.  This is tough, as I am not a morning person.  Sometimes, however, you have to do these things; helping build a satellite might be a once-in-a-lifetime event.  During these passes, where it has already spent a significant amount of time in sunlight, the battery voltage is below 3400 mV.  Is the battery going bad?  While it is certainly possible the battery has suffered from some loss of charge capacity, one has to remember it is does not generate energy; it merely stores it.  Since it is the solar power system that generates the power used by the satellite and stored in the battery, could the drop in battery voltage be due to a degradation in solar power generation?

Back around May 12, I noticed the MPPT (solar) current readings were typically less than 10 mA.  This much lower than it should be.  To better understand what might be going on, a new chart was added to the telemetry spreadsheet which shows both the battery voltage and the MPPT (solar) current (with the zero readings removed), each with its own linear regression line.  This chart can be seen from the following URL:

https://www.dropbox.com/sh/l3919wtfiywk2gf/AABKSR5V4cOvEPqPYbs8QYZNa/Telemetry-analysis/Current-Telemetry/Battery-Voltage-MPPT-Current-Chart.pdf

Notice how the MPPT current trend line has been sloping downward, similar to that of the battery voltage.  Moreover, starting 2 weeks before June 4, 2015 (each X axis division on the chart represents 2 weeks time), each reading has been at or below the trend line.

A more striking comparison can be seen by doing the following:
1. Zoom in of the Battery-Voltage-MPPT-Current-Chart to show the 4 week interval starting May 7, 2015, and ending June 4, 2015
(see https://www.dropbox.com/sh/l3919wtfiywk2gf/AACdQtySHZW3kVl7UMgSrxfHa/Telemetry-analysis/Battery-Voltage-MPPT-Current-Comparison-2015-05/Battery-Voltage-MPPT-Current-2015-05.pdf )
2. Zoom in of the Battery-Voltage-MPPT-Current-Chart to show the 4 week interval starting May 8, 2014, and ending June 5, 2014
(see https://www.dropbox.com/sh/l3919wtfiywk2gf/AACracUWkivilfsKGBUFkmDXa/Telemetry-analysis/Battery-Voltage-MPPT-Current-Comparison-2015-05/Battery-Voltage-MPPT-Current-2014-05.pdf )

$50SAT Boards

$50SAT Boards

In comparing these charts, it is clear both the battery voltage and the MPPT current were significantly lower this year that during the same period last year.  On June 5, 2014, the trend line value for battery voltage was about 3610 mV, and for MPPT current was about 30 mA.  One year later (June 4, 2015), the trend line value for battery voltage was about 3380 mV, and for MMPT current was about 14 mA.  Therefore, while it is likely the battery has suffered some loss of capacity, it appears the low battery voltage is due to low solar power output.  There are many possible reasons for this, including:

* Solar cell damage due to sputtering: since there was no protective covering on the solar cells, impacts from high energy particles can damage the cells, causing a drop in output.

* Solar cell damage due to thermal cycling:  We know from telemetry data the interior of the satellite cycle between +30 degrees C and -30 degrees C each orbit.  It is likely the exterior temperatures experienced higher extremes, and this periodic thermal cycling may have caused the solar cells to fracture, thus leading to a drop in output.

* Short circuit failure of one or more of the diodes which isolate each MPP tracker output, which can cause an inactive MPP tracker (one whose corresponding solar panel is not facing the sun) to load an active one (one whose corresponding solar panel is facing the sun).

Because of the limited amount of telemetry gathered, it may not be possible to determine the exact cause.  If the solar output power continues to drop, the battery voltage may never get above the 3300 mV threshold needed to enable the transmitter, at which point we will lose the ability to monitor its status.  Even if this does happen, however, we never really thought it would last this long.  We would have been happy if it just worked, and really happy if it lasted a month or two.  19 months – this is way beyond what any of us expected!

As of June 25, 2015, the orbit has decayed by about 73 km since launch.  Since April 21, 2015, it has been decaying at a rate of about 1 km per week.  Apogee is now at 561 km, and perigee is at 529 km.

The following are the TLEs from 2015-06-25:

EAGLE 2
1 39436U 13066W   15176.16386703  .00013608  00000-0  90105-3 0  9991
2 39436  97.7444 252.3622 0022818  80.2035 280.1767 15.07230510 86697

Again, if anyone wants to make an attempt at predicting when it will de-orbit, here is some useful information:

Average cross-sectional area = 0.014252 m^2
Mass = 210 g
Area/mass ratio = 0.06787 m^2/kg

From the 2015-06-25 TLEs:
Semi-major axis: 6922.8 km
Eccentricity: 0.0022818
Apogee: 560.6
Perigee: 529.0

As always, please post any telemetry, or for that matter, any reception reports to the Yahoo discussion group.  We would especially like to encourage our friends in the southern hemisphere to listen for $50SAT/MO-76/Eagle-2.  We really appreciate everyone who has provided reception reports and telemetry as well as access to their WebSDRs.  To date, we have 3,098 individual error-free telemetry captures, and the vast majority of these did not come from Stuart, Howie, or I.

73 Michael Kirkhart KD8QBA
$50SAT/MO-76/Eagle-2 team

$50SAT is one of the smallest amateur radio satellites ever launched at 5x5x7.5 cm and weighs only 210 grams. Transmitter power is just 100 mW on 437.505 MHz (+/-9 kHz Doppler shift) FM CW/RTTY. It uses the low cost Hope RFM22B single chip radio and PICaxe 40X2 processor.

$50SAT has been a collaborative education project between Professor Bob Twiggs, KE6QMD, Morehead State University and three other radio amateurs, Howie DeFelice, AB2S, Michael Kirkhart, KD8QBA, and Stuart Robinson, GW7HPW.

Further information in the $50SAT Dropbox https://www.dropbox.com/sh/l3919wtfiywk2gf/-HxyXNsIr8

There is a discussion group for $50SAT http://groups.yahoo.com/groups/50dollarsat/

50DollarSat http://www.50dollarsat.info/

Essex STEM Balloons Launched

Image received from The Boswells School payload on June 29, 2015

Image received from The Boswells School payload at 1416 GMT on June 29, 2015

On Monday, June 29, 2015 three high altitude balloons from Essex schools and colleges transmitted Slow Scan Digital Video (SSDV) in the 434 MHz band.

The balloons, part of the educational Science, Technology, Engineering and Mathematics (STEM) initiative, were taken to an approved site at Elsworth, Cambridge for the launch.

Transmission coverage area of the balloons at 1352 GMT June 29

Transmission coverage area of the balloons at 1352 GMT June 29

The balloon from The Boswells School, Chelmsford reached an altitude of 36,937 metres. It had the call sign BWELLS and transmitted Frequency Shift Keying (FSK) ASCII RTTY at 600 bps on a nominal frequency of 434.450 MHz USB. Balloon frequencies may vary from nominal by several kHz during a flight due to the cold temperatures at high altitudes.

Stewards Academy, Harlow achieved an altitude of 39,876 metres. Their call sign was SWARDS and had a nominal frequency of 434.050 MHz USB and 300 bps data rate.

The Prospects College of Advanced Technology, Basildon reached an altitude of 38,659 metres with their balloon, call sign PROSP, which transmitted on a nominal frequency of 434.150 MHz USB with a 300 bps data rate.

All three balloons transmitted images using SSDV. Individual packets from an image were received by radio amateurs across the UK and NE Europe and automatically uploaded to a central server with the final image being built up from all the good packets and displayed on the web for all to see.

The SSDV images transmitted by the balloons can be seen at:
http://ssdv.habhub.org/SWARDS
http://ssdv.habhub.org/BWELLS
http://ssdv.habhub.org/PROSP

The balloon tracks were displayed live on the web at http://tracker.habhub.org/ and may still be available to view if you select the option to display the past 3 days.

The balloons carried a Raspberry Pi computer board and a Pi in The Sky (PITS) high altitude balloon tracker. On May 24 Chelmsford radio amateur Chris Stubbs M6EDF carried out a test of the PITS tracker for Essex Council, read his report at http://chris-stubbs.co.uk/wp/?p=578

Pi in The Sky project
http://pi-in-the-sky.com/
https://twitter.com/pitsproject

High Altitude Balloon links for online tracking, UKHAS mail list / chat room, WebSDR and SSDV
http://amsat-uk.org/beginners/balloons/

MADHEN EGGSPLORER-1 Balloon Launch

Eggs in Space on front page of the Sleaford Standard newspaper

Eggs in Space on front page of the Sleaford Standard newspaper

At around 10-11am on Sunday, June 28, 2015 Andrew Garratt M0NRD and the South Kesteven Amateur Radio Society are planning to launch balloons from the 10th World Egg Throwing Championship held at the Swaton Vintage Day at Swaton, near Sleaford, Lincolnshire.

As well as telemetry data it is also planned to transmit Slow Scan Digital Video images in 434 MHz. Depending on altitude the signals from a balloon may have a range of up to 800 km, potentially covering much of the British Isles. A real-time track with altitude will be displayed online at http://tracker.habhub.org/

Andrew provided this information on the UKHAS Mailing List : First ever flights for me, so in at the deep end. The ‘egg’ payload will be carried aloft by the balloon and will have a parachute decent into the North Sea when the balloon eventually bursts. There will be SSDV and backup tracker, kindly sponsored by MADHEN http://madhen.net/

Callsign – MADHEN
USB RTTY 300 Baud 880 Hz Shift – Ascii 8 bits, no parity, 2 stop bits Telemetry and SSDV – 434.400 MHz

Callsign – EGG1
Backup tracker
USB RTTY 50 Baud 380 Hz Shift – ASCII 7 bit, no parity, 2 stop bits
Telemetry – 434.650 MHz (old non-tcxo NTX fixed frequency)

Second flight planned, a foil floater with VAYU-NTX tracker kindly donated by Steve Smith G0TDJ

Callsign – EGGDX
USB RTTY 50 Baud 450 Hz Shift – ASCII 7 bit, no parity, 2 stop bits
434.450 MHz (fixed frequency)

Launch should be around 10-11am.

All help in tracking greatly appreciated

Andrew Garratt M0NRD
Chairman South Kesteven Amateur Radio Society
http://www.skars.co.uk/
https://twitter.com/eggsplorer1

UPDATE June 30, 2015:
BBC News report on the balloons http://www.bbc.co.uk/news/uk-england-lincolnshire-33277561

Andrew M0NRD’s report on the day
http://nerdsville.blogspot.co.uk/2015/06/first-hab-flights-were-success.html

Read the Sleaford Standard newspaper report
http://www.sleafordstandard.co.uk/news/local/eggs-in-space-team-of-radio-hams-scramble-to-be-first-to-achieve-egg-straterrestrial-space-mission-1-6803863

High Altitude Balloon links for online tracking, chat room, free software and SSDV
http://amsat-uk.org/beginners/balloons/

Ham Radio Field Day from Space

As part of the #askAstro program 16-year-old Brandon Martinez KF7RAO submitted a video question to astronaut Reid Wiseman KF5LKT about Amateur Radio on the International Space Station (ARISS)

On September 14, 2014 Brandon posted his question to YouTube and on October 10 Reid KF5LKT answered it from the space station. In his reply Reid describes his experience in June of Field Day from space.

Watch Brandon’s question and Reid’s reply

ARISS http://ariss.org/

NASA Astronaut’s ISS Field Day Operation Puts Smiles on Several Faces
http://www.arrl.org/news/nasa-astronaut-s-iss-field-day-operation-puts-smiles-on-several-faces

AMSAT 2015 Field Day – June 27-28
http://www.southgatearc.org/news/2015/june/amsat_2015_field_day.htm

Geosynchronous payload inches closer to reality

Millennium Space Systems AQUILA M8 Series Satellite Structure

Millennium Space Systems AQUILA M8 Series Satellite Structure

Colonel Fred Kennedy, USAF, Space Production Division and Program Manager for the Wide Field of View satellite (hereinafter WFOV) has accepted the proposal to allow Virginia Tech to place a hosted payload consisting of a Software Defined Radio designed and built by Rincon Research Corporation using support equipment and antennas designed by Virginia Tech and other volunteers to this effort.

The spacecraft hosted amateur payload will be included in the Aquila M8 bus by Millennium Space Systems who is the integrator for WFOV.  Our first role and immediate action item is to raise the $100,000 for Millennium to complete the study of the inclusion of this payload on Wide Field Of View.  Following successful completion of this study,  Virginia Tech will raise money to defray the cost of integration and launch of this payload.  After achieving orbit,  volunteers managed by Sonya Rowe and Zach Leffke of Virginia Tech will operate the payload for as long as it is over the US.  We at VT with the help of the ARRL will prepare partners in other regions to operate the spacecraft should it be moved in order to allow the WFOV to accomplish its primary mission and be prepared to take over operation of the hosted payload on its return to the area of the Contiguous United States (CONUS).

Colonel Kennedy told me how much he admires how unbelievably capable amateurs around the world have been in their many organizations to get spacecraft to orbit and wishes us the best of luck in the onerous task we will have of raising $5M to get this on board.

I will be making many details public now that Colonel Kennedy has told us we are a go if we raise the money.  I know this is a tall order but “A coward dies a thousand deaths and a brave person dies only once”.  I would rather go down trying than cower in a closet.  This is not intended as casting aspersions on any individual or organization just saying I must proceed hastily to succeed at all and I cannot afford caution.

Let’s GO!

Bob McGwier
Co-Founder and Technical Director, Federated Wireless, LLC
Research Professor Virginia Tech
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)

Geosynchronous Amateur Radio Paylod http://amsat-uk.org/satellites/geosynchronous/na-gso-sat/

FUNcube-1 / AO-73 Glitch and Commanded Reboot

AO-73 (FUNcube-1) - Image credit Wouter Weggelaar PA3WEG

AO-73 (FUNcube-1) – Image credit Wouter Weggelaar PA3WEG

On Sunday, June 21, there was an anomaly on FUNcube-1 that required the reboot of the satellite’s MCU (Microcontroller).

After a bus freeze, the databus watchdog did kick in as expected and rebooted the satellite. However, we did need to command the satellite back on to automatic mode.

When we did so on the 20:00 UTC pass, it came back up in the correct mode.

We envisage to switch back to autonomous mode either tonight or tomorrow morning local time.

FUNcube is still happy and healthy. This is the 4th reboot since launch, of which one was intentional. Thanks for your reports and concerns.

On behalf of the whole team best 73s,

Wouter Weggelaar PA3WEG
FUNcube team

FUNcube-1 (AO-73) Telemetry:
• Dashboard App http://funcube.org.uk/working-documents/funcube-telemetry-dashboard/
• Data Warehouse Archive http://warehouse.funcube.org.uk/
• Whole orbit data http://warehouse.funcube.org.uk/wod.html?satelliteId=2

KLETSkous Project Update

KLETSkous LogoThe South African Radio League (SARL) report at the pre-conference Engineering meeting held on Friday [June 19] members of the SA AMSAT CubeSat team made some tough decisions.

During the past few years, various options and subsystems have been experimented with.

The team has now set the launch date of KLETSkous at July 2017 with the first flight model to be ready by February 2016 for testing after which final integration will start. This requires that various module designs are locked down and built by October 2015.

It is planned to have all the modules wired together in a breadboard configuration for testing the interoperation of the various sub-units by December 2015. Some modules are at a more advanced stage than others, but in the next few months, the team expect to catch up and meet the deadline for the first breadboard test.

Frik Wolff, ZS6FZ, the League’s technical manager, has joined the team and is working on solar panels and stabilisation issues. Francois Oberholzer, an honours student at Stellenbosch University, is working on improving the weight/strength relationship of the space frame, a project that is part of his thesis. Nico van Rensburg, ZS6QL, as programme manager and the person responsible for documentation, will support the project manager, Hannes Coetzee, ZS6BZP.

There are many opportunities for radio amateurs to join the engineering team. If you have a particular expertise or passion to add value to the  KLETSKOUS project, please discuss your participation with Hannes Coetzee or any of the team members and send your details to saamsat@intekom.co.za

Source SARL http://www.sarl.org.za/

KLETSkous http://www.amsatsa.org.za/KLETSkous.htm

SA AMSAT Space Symposium June 20, 2015
http://www.amsatsa.org.za/SA%20AMSAT%20SPACE%20SYMPOSIUM%202015%20programme.pdf

QB50p2 FM Transponder Tested

QB50p1 and QB50p2 - Image Credit ISIS

QB50p1 and QB50p2 – Image Credit ISIS

AMSAT-Francophone report that the FM transponder on QB50p2 (EO-80) has been tested. A Google English translation of the post on their website reads:

On June 19, 2014, two 2U CubeSats QB50p1 and QB50p2 were launched as part of the QB50 precursor program into a polar orbit at an altitude of 680 km.

The satellite QB50p2 (object 40032) is equipped with a secondary FM transponder payload developed by AMSAT-F.

On Tuesday, June 16, 2015 almost 1 year after launch the AMSAT-F FM transponder on QB50p2 was activated by the main control station in The Netherlands for the duration of an orbit. At the Polytechnique in Palaiseau, we were able to receive telemetry in CW and put into action the FM transponder with an output of 1.5W.

A very strong signal was received at Palaiseau and by F6HCC in Brittany. The transponder was turned off at the end of the orbit.

In a few weeks, the transponder should be activated permanently. The signal is very strong, we will probably use a lower power level of 500 mW or 1 watt. We will inform you later.

QB50p1 (EO-79 / FUNcube-3) is equipped with a linear transponder for SSB and CW. The first tests were successfully completed in April and its transponder should also be enabled full-time in a few weeks.

Gérard – F6FAO

QB50 Amateur Radio Information https://www.qb50.eu/index.php/precursor-amateur-radio-operator

AMSAT-Francophone http://tinyurl.com/AMSAT-Francophone

The IARU Satellite Frequency Coordination Panel Status pages list these frequencies for the two satellites:

QB50p1 (FUNcube-3) has a VHF 9600 bps BPSK telemetry downlink plus a linear U/V transponder for SSB/CW communications similar to that already flying on FUNcube-1 with an output of 400 mW.
• 145.815 MHz 9600 bps BPSK telemetry beacon
• Inverting SSB/CW linear transponder 400 mW PEP
– 435.035 – 435.065 MHz Uplink LSB
– 145.965 – 145.935 MHz Downlink USB

QB50p2 has  a VHF 9600 bps BPSK telemetry downlink plus a separate RF payload from AMSAT-Francophone which will comprise of a FM voice transponder with UHF uplink and VHF downlink. It can also transmit FX25 telemetry at 9600 bps.
• 145.880 MHz 9600 bps BPSK telemetry beacon
• 145.840 MHz 9600 bps FSK FX25

To use the FM voice transponder Paul Stoetzer N8HM suggests programming these frequencies into your rig’s memories:

EO-80 AOS - TX 435.070 MHz 210.7 Hz CTCSS, RX 145.840 MHz
EO-80 2   - TX 435.075 MHz 210.7 Hz CTCSS, RX 145.840 MHz
EO-80 TCA - TX 435.080 MHz 210.7 Hz CTCSS, RX 145.840 MHz
EO-80 4   - TX 435.085 MHz 210.7 Hz CTCSS, RX 145.840 MHz
EO-80 LOS - TX 435.090 MHz 210.7 Hz CTCSS, RX 145.840 MHz

AOS = Aquisition Of Signal. TCA = Time of Closest Approach. LOS = Loss Of Signal

OSCAR Numbers for QB50p1 and QB50p2 CubeSats
http://amsat-uk.org/2014/07/02/oscar-numbers-for-qb50p1-and-qb50p2-cubesats/

Amateur Satellites at Skills Night

Steve Hedgecock M0SHQ sending Packet Radio to the ISS

Steve Hedgecock M0SHQ sending Packet Radio to the ISS

The Chelmsford Amateur Radio Society Skills Nights, are hosted by the CARS Training Team and continue to be a popular and appealing event, especially for newcomers to the hobby.

There was an excellent turnout on the evening of Monday, June 15 with 68 people signing in.

A major highlight of this month’s event was a live demonstration of amateur APRS packet data on 145.825 MHz FM from the International Space Station (ISS) as its flew overhead. Steve Hedgecock M0SHQ had clear reception and even managed to get a few of his own packets sent and relayed by the ISS.

Andrew Garratt M0NRD in Newark-on-Trent was one of those who received Steve’s packets and he immediately sent an eQSL.

Steve had received his new Elk 2m/70cms Log Periodic satellite antenna from the AMSAT-UK shop just a few days before and it performed admirably. During the evening Steve explained how to get started with amateur satellites. They can be received on handheld rigs and worked using low power, just 5 or 10 watts. Further information can be found at http://amsat-uk.org/beginners

On May 31 Steve M0SHQ was filmed making contacts via the SO-50 satellite by the team from the TX Factor TV show so you may see him in one of their future videos.

Satellites were just one aspect of great evening, with a wide range of activities from home construction to how to operate portable taking place. Read the report on the evening at http://www.essexham.co.uk/news/skills-night-june-2015-report.html and http://www.g0mwt.org.uk/skills/cars-skills-jun2015.htm

The next CARS Skills Night will be on Monday, July 20. It’s free to attend and all are welcome.