Speaking at HacDC: Gerhard Straub (K6XH) from Voice of America

When: Wednesday, February 11, 2015 at 7:30PM

Where: HacDC, 1525 Newton St NW, Washington, DC

RSVP (optional): on our Meetup.com group page

The HacDC Amateur Radio Club (HARC) presents Gerhard Straub, K6XH. This talk will be an overview of the International Broadcasting Bureau (the transmission side of Voice of America) transmission network. We’ll discuss the magnitude of the broadcasting operations and take a look at some of the facilities around the world that are utilized for Voice of America and other U.S. Government broadcasters. We’ll also discuss in more detail some of the antenna systems that are utilized.

This meeting is open to all!

Attendees who are licensed ham radio operators can participate in a door prize drawing for a Baofeng UV-5R Transceiver

About the presenter

Gerhard Straub, K6XH, is the Director of the IBB Broadcast Technologies Division. The Division has responsibility for the conceptualization, design, and implementation of all terrestrial AM, FM, TV, and SW broadcasting systems utilized by the IBB. The division also provides all propagation analysis, frequency scheduling, and off air monitoring of the broadcast network.

Julia Longtin to present at @31c3

Cast aluminum part fabbed via lost PLA with aluminum melted using kiln made from consumer microwave oven magnetron.HacDC member Julia Longtin will give a talk at the upcoming 31st annual Chaos Computer Club Congress in Hamburg, Germany, Earth, Milky Way. She will lecture about a process she has been perfecting over the past year for 3D casting aluminum parts via the lost PLA method using repurposed consumer microwave ovens to liquify the metal.

We use microwaves to cast aluminum from 3D printed [PLA] objects. This gives us the ability to cast high quality 6040 aluminum pieces using a 3D printer and commercially available consumer microwaves.

We manufacture microwave safe kilns for melting aluminum. We create microwave transparent molds that allow us to burn out plastic without heating the mold itself there[by] creating a quicker method of accomplishing the lost PLA process.

Julia‘s process is being developed as a contribution to the larger FOSSCar initiative, which aims to use an open source production and development model and recycled materials including refurbished and repurposed off-the-shelf technology to fabricate a road-worthy car.

Cryptoparty 2014 – Hi my name is Ed


press-release dated 17 September 2014


For Immediate Release

Who: HacDC

What: CryptoParty 2014: "Hi, my name is Ed."

Where: HacDC, 1525 Newton Street NW, Washington DC 20015 USA

voice: 202-556-4225 | www.hacdc.org

(Entrance is behind St. Stephen and the Incarnation Episcopal Church, via reddish door on 16th St NW, NOT via Newton St NW).

Geolocation: 38.93374, -77.03546

When: 20 Sept 2014 at 2pm ET


There has been heightening awareness about online security over recent years. The Snowden revelations have made the topic gain prominence with the main stream media and the general public. Concerns have been further amplified by widely publicized personal data thefts from large companies’ systems, vulnerabilities found in widely used networking software, the growing inadequacy of passwords as a means to maintain data security, and the privacy concerns raised by social media corporations’ use of our lives’ data streams. The topic is one that renders otherwise informed people powerless with its confounding technical issues and what to do about them. The CryptoParty format is meant to help educate lay and expert communities, and provide a friendly place for ad hoc Q&A.

Contact media inquiries: email hidden; JavaScript is required


Local DC hackerspace, HacDC, is hosting its 3rd annual CryptoParty. This event is aimed at all levels of computer expertise including anyone interested in cryptography, securing their information and identity on the Internet, and in the socioeconomic issues surrounding data privacy.

Talks have been scheduled on strengthening the security of email, WiFi, passwords, web browsing, and more. Speakers on topics relevant to public policy and legislative agendas are in the pipeline. Mini-workshops will be conducted on setting up encrypted email, placing secure phone calls, password management, and more. Two tracks are planned for novice and expert participants, respectively.

If anyone has knowledge to share in the form of a structured or ad hoc talk, would like to propose and run a mini-workshop, or volunteer for conference day logistical support, they are asked to contact email hidden; JavaScript is required to introduce themselves.

Twitter @cryptopartyDC

RSVP on Meetup.com (not required but useful for planning purposes): meetup.com/hac-dc/events/187948232/

Event page at cryptoparty.in

Event Google Doc: http://goo.gl/jpazAQ

Some speakers to-date

Arshad Noor is the CTO of StrongAuth, Inc., a Silicon Valley company focused on cryptographic key-management for more than 13 years. He has authored/designed open-source cryptographic tools: CSRTool, StrongKey, CryptoEngine and CryptoCabinet, written many papers/articles: Identity Protection Factor, Regulatory Compliant Cloud Computing, Data Encryption Infrastructure, etc. – and has spoken around the world at conferences hosted by RSA, NIST, ISACA, ISSA, ISSE, OWASP, CARTES, ABA and others.

Ben the Pyrate is a programmer, hacker, and social justice activist. Ben is a long time member of HacDC and one of the founding members of Project Byzantium. Having been obsessed with crypto since childhood, he is always looking for opportunities to share his passion for secret messages.

Hank Leininger has been breaking stuff and building stuff for a while. While playing defense, he wrote the HAP-Linux kernel hardening patches in the late ‘90s, which have been a part of GRSecurity since the 2.4 kernel series. In 2004 Mr Leininger co-founded KoreLogic, Inc., an expert security consulting practice. He does not have any interesting letters after his name.

Joe Klein, has played all roles in the security business over the last 30 years. As a researcher he developed the first IPv6 IDS, a Predictive Internet Threat Intelligence system, sensor networks security, hacked cars and other things that move, hacked time, and now runs a company creating the next generation security systems, based on biologically inspired methods and practices.  He also has patents and provisionally patents including  one in ‘Integrated cyber network security system and methods’.  When not geeking on technology, life is about training for triathlons, hanging out with friends at ‘hacker spaces’ and conferences, and enjoying an amazing life.

Mark is currently the Chief of Incident Management for a Industrial Control Systems (ICS/SCADA) focused response team where he has served in a variety of roles for the past 6 years.  Mark has previously done consulting in web application security, penetration testing and critical infrastructure security.  Mark has a BS in Computer Engineering from The Pennsylvania State University.

Zak Zebrowski is a data miner, specializing in forensic database analysis. He is interested in all things Perl, and enjoys teaching. 

HacDC is a member-operated community organization in Washington, D.C. devoted to collaboration in the creative use of technology. Founded in 2008 by a diverse group of engineers, artists, and hobbyists, HacDC hosts free and open activities to share knowledge, skills, and ideas. It features a meeting space and a workshop stocked with specialized tools and supplies useful for the collaborative development of technological and artistic projects. Visitors are encouraged to call before coming to make sure a member is available to show them around. +1.202-556-4225

HacDC is a District of Columbia Non-Profit Corporation, incorporated on March 26, 2008 (file number 280867), and organized exclusively for charitable, educational, and scientific purposes within the meaning of Section 501(c)(3) of the Internal Revenue Code.




USASEF 2014: Report from the field

Splat-shaped, acrylic give-aways engraved with the HacDC logo and domain.

HacDC member, condew, laser cut and engraved 2,042 “splats” of which 1,148 were given away to visitors to our table.

On Friday 25 April, Arte Technica reported:

Thanks to the generosity of Gary Mauler and Robot Fest we really do have an awesome location. Condew’s Arduino LED and hydrometer demo was in fact the highlight of our exhibit today. And the splats he made are going fast. They’re such a hit! Hope you can meet Danish, he is great with the crowds and has also decided to do add his own Arduino demo for our exhibit on Sunday.

The highlight of our day, after the close of Sneak Peek Friday, was a personal demo at our exhibit by the co-Founder of Backyard Brains. Ag4ve, condew, Danish, myself and eventually nearby exhibitors and even passers-by, witnessed an Giant South American Cockroach (Blaberus giganteus) turn right and around, and again, because of a miniature open source neural interface controlled by an iOS app.

FYI—Backyard Brains is looking forward to mirage335’s BioSignal Amplifier demo this weekend, and would enjoy a “Hangout” with other Biohacker enthusiasts at HacDC if there’s interest.

Last but not least, today’s heroes are Lee (N4TCW) and ITechGeek. Lee and his ARRL team literally opened doors for and helped HacDC quickly get to its destination. ITechGeek really busted his hump for us. He setup our very noticeable RasPi server with hacdc.org and wiki.hacdc.org and ALSO went to the space at 05:00, waited, and then helped with multiple transports. Of course, also of note was the staging by condew, Dan B., ag4ve and myself, but ITechGeek and Lee were singularly instrumental in getting us this far.

So even with a couple hours of sleep, all in all a good start.

The festival lasted through Sunday and our table had an estimated 3,000 to 5,000 visitors.