Test Equipment


The Saturday May 5th, 2012 Install fest saw 24 attendees! At least 8 computers were repaired, with Linux installed as the second Operating System, or, the first and only OS!

Max brought Donuts! Thanks, Max!

One Shuttle System computer was absolutely DEAD-On Arrival… Within about three minutes, it was fully functional, having been trouble shot as the CMOS was corrupted, by a dead battery, which was replaced, after which, it came up and booted with a Live CDrom of Linux Mint 12. Patrick Berry, KJ4JTK, refurbishes computers, so this was a well known problem.

Tracy installed Kubuntu on it, and proceeded to build and operate some of the Texas Instruments micro computer boards which he obtained for $4 to $28 each, including Free Shipping! Some run on UCLinux, a small programmable Operating System, for control of media, machines, and more!

Included in the LEAP membership are several HAM Radio operators!  Some Linux Enthusiasts And Professionals -Central Florida (LEAP-CF.org) are licensed Amateur Radio Operators. We actively promote HAM Radio, and invite other HAMs to attend! HAM Radio is fully integrated in this club of electronics hardware and software programming enthusiasts.

Phil Barnett, N4CR is shown in photos, tuning, testing, adjusting, and repairing radios, using some of his portable workbench test equipments, A Motorola Spectrum Analyzer, Frequency Counter, and more.

Some new visitors showed an interest in both Linux, and testing for their Technician License, as Linux has 78 HAM Radio programs to control radios, log contacts, design antennas, analyze and track satellites, provide HAM radio control, and more!

Many folks brought a computer, and lots of technical questions about computing, networking, and more! We enjoy the challenges presented, and are happy to answer questions, and provide solutions!

The Install Fests are held on the first Saturday each month, at Bldg. A at Winter Park Christian Church, 760 N. Lakemont Ave., Winter Park, Fl 32792.

Some new visitors received info and training on internet access, web browsing, and how to use features found on modern computers.  No question is refused!

What do you want to know, that we could help you with?

Open at 9 AM, closes at about 5 PM. Everyone is welcome!
Free coffee, cocoa, and knowledge!

http://leap.cf.org for dates, times, locations of meetings and Install Fests!

Photos, Bill Collins, for HPIM0421, others by Patrick Berry.

photo links

More Photos are appreciated, with credit, if you have any to contribute!

Patrick Berry, TSgt., USAF (Retired)
Secretary, http://www.leap-cf.org
Amateur Radio KJ4JTK — http://www.arrl.org

 

As mentioned on the net, the UCF club found our QRM scanning the band and took some movies. These are from April 13.

Hellraiser Transmitter Project - Photo by Hans Summers

Hellraiser Transmitter Project - Photo by Hans Summers

Hello again. I would like to share another resource that will inspire, inform, and astound. Hans Summers, G0UPL, is an Electronic Wizard of the Twelfth Degree (see the International Brotherhood of Electronic Wizards Handbook for further information). He has built a website that abounds with inspiration. His projects are visual and functional. He likes to use tubes and will spurn convention to create a visually appealing project. This is art. The amount of information is sure to keep you busy and should be bookmarked for reference.  I am interested in his extensive information on Huff and Puff Oscillator stabilizers and identifying crystal parameters. He builds his own test equipment and documents so that we can follow in his path. Several QRSS projects are detailed. I have added QRSS to my list of future projects. Thank you Hans, for sharing a lifetime of experience at HansSummers.com. 73

Robin

NORCAL S9

NORCAL S9

When I started planning the Hendricks BitX20a Project there were several pieces of test equipment that I found would help. One of the needed items was a signal generator. NorCal QRP Club makes a fine kit with easy to follow directions for those such as I, i.e. directionally handicapped. It has four crystal controlled frequencies. I needed 11Mhz so a quick trip to Sky Craft (that was a joke) supplied a crystal that was exchanged for the supplied 10Mhz crystal.  The S9 kit is a mix of surface mount and through-hole construction. It also has an attenuator that drops the signal to an S1 level. I am guessing  this could be helpful when adjusting the receive end filters. Upon completion I found the signal to be very weak and when I switched in the attenuator the signal disappeared. I took it to my Elmer, K4DF, and he described the circuit to me as we hooked it into his HF rig. When he finished showing me the oscillator and attenuation circuits he suggested I check the solder joints in the oscillator section. A magnifying glass and some quick soldersmoking solved the problem. This kit will fit in a Altoids tin, but I do like looking at it. These kits are great fun and provide practice with an iron. Soldersmoking rules. 73

Robin

Bitx20A Alignment in Progess

Bitx20A Alignment in Progess

Hello, I have been graciously allowed to post some thoughts about my ongoing relationship with a Bitx20A.

Where to begin… my name is Robin and I am a homebrewer. It all began when I found out you could build your own and learn about how a radio really works. No more black boxes with multiple-multifunction knobs and buttons for me. I was completely innocent, without a clue of the power this would have over me. Before I knew it I was a frequent-flyer at SkyCraft. Late night sessions at the dining room table with smoke wafting about as I ponder the perplexities of mixed oscillator signals filtered through polycrystalline mineral wafers. I still remember the joy of hearing the audible oscillations of my first Colpitts, but I digress. Consider the consequences, it is not for the faint of heart. If this is the path you choose, know what lies ahead. Capacitors that disintegrate before your eyes, signals that disappear after just a small tweak, and the frustration of “dang, I followed the directions and it don’t work”. I warned you!

That said, I will post a few photos and discuss my Bitx20 from time to time. I want to thank Tracy for his inspiration on the Tech Net and David for his Web expertise that allows me to be here. 73

Robin

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