Stepping into Video

We are used to watching multi-million dollar productions, which are slick and for the most part engaging, so can we easily adapt to watching less than perfect productions by untrained but enthusiastic individuals? The answer is clearly yes given the success of YouTube; we can accept imperfect technical quality providing the subject is engaging.

I have learned a lot about video in the past year and discovered you don’t have to spend a huge amount of money to get good video. My new Fujifilm X-T2 – an excellent stills camera – does a pretty fine job. But good video doesn’t cut it without great sound and even the best sound and video is useless if content is boring or poorly presented. That requires direction and editing – skills I am learning bit by bit.

When I started, I needed a subject to cut my video production teeth on. I remembered an old friend who is a bit of a technical wizard and a collector of vintage high-voltage equipment, capable of producing bolts of lightening and deafening concussions, drama and excitement. Then there is the man himself, Garry Garbutt, a character somewhat out of his time and one who likes to inspire and educate. Garry belongs to a dying breed of hands-on engineers who can actually take apart a machine, figure out its intricacies, and fix it when it goes wrong; he would also be the first to admit that we are fast approaching the point where we will be unable to fix anything other than the simplest devices. Indeed, we already throw away malfunctioning modules and replace them with new ones or just toss out the whole machine and buy a new, improved version.

Garry is a natural showman and didn’t need a lot of convincing when I asked if we could make a series of short videos demonstrating some of the interesting vintage equipment that fills his workshop. If you would like to see how the Crookes Tube lead to the discovery of the electron, X-rays and ultimately modern electronics, Garry can show you. Perhaps the huge arcs fired from Tesla coils Garry built will inspire you. We had plenty of challenges and lots of fun making these less that perfect videos. Check them out on Vimeo;

 

or all five at: http://davidskelhon.zenfolio.com/garrygarbutt

 

Advertisements

Clouds and Silver Linings In A World Where Things Fix Themselves

I love quality; that’s why I have always used Nikon photographic gear. It’s the same with other aspects of my life; I once spent the five years driving a diesel Land Cruiser. A quality product, even if it was nearly half my age. I’m also an amateur radio operator, and a fairly miserly one I’ll admit. I can’t afford quality new gear so I dig around flee markets and “ham fests” for quality old.  Most of my equipment is from the era of large, chunky dials, and vacuum tubes. This type of radio is often referred to as a “boat anchor,” as once “dead,”these extraordinarily heavy devices fit the bill exactly. By now you are probably starting to get the picture.

A couple years ago I acquired a Yaesu FT 901 DM, one of the finest radios from the early 80s. It’s called a hybrid radio, because it has both transistors, and in the power amplifier, vacuum tubes. It’s a heavy beast, weighing in at nearly 45 pounds.

This one was almost cosmetically perfect but I bought it for a couple of hundred dollars knowing it needed some electronic TLC. I’m no radio engineer but I know that 90% of problems in electronics usually arise from a mechanical failure, such as a “dry” solder joint or a corroded contact in a switch or relay. Transistors and vacuum tubes have no moving parts and do not wear out in the conventional sense. So I optimistically dug around in the radio with it switched on – something requiring great care and focus as vacuum tubes in these old radios require a whopping 900 volts to operate.

Sure enough, as I prodded one of the many circuit boards, the receiver crackled into life and after 30 minutes of poking around I isolated the problem down to a little metal can containing a crystal filter – a device which helps tune-out unwanted signals. Lifting the corner of the can caused the receiver to scratch and crackle. With a soldering iron in one hand and the vacuum de-soldering tool in the other, I carefully melted and removed the solder from the wires connecting the can to the circuit board. Freed from the board, I then cut the can open to reveal an interconnected web of precisely ground quartz crystals. Further prodding revealed the culprit – a dry solder joint that was easily fixed.

After hastily reassembling, I fired it up. I now had a working receiver but unfortunately my voice couldn’t be heard on the airwaves. I prodded and pulled wires, removed circuit boards and cleaned contacts but to no avail. Frustrated and lacking some essential diagnostic equipment, I could not move forward. Eventually I took the radio to the basement store room and placed it carefully on a shelf several feet from the floor. I covered it with an old sheet and told myself it would be a winter project – one of many requiring my attention. For more than an instant I thought about selling it – no doubt there were lots of capable enthusiasts out there who were knowledgeable enough to be able to fix it. But then it was in such beautiful condition that I hated the thought of parting with it. After all, it’s a piece of history from the days when men were men and radios were huge, tactile machines and indestructible to boot – not the modern wimpy, nano sized devices driven by multifunction buttons and menus.

A few months later, I stepped into the storeroom in search of some unrelated household item, only to find this beautiful piece of history laying on its side middle of the concrete floor. I couldn’t believe it – how could that have happened? My blood pressure was rising as fast as my heart was sinking. Sparks flew in my mind. Had my dear wife accidentally knocked it off the shelf? Hardly likely and hell she would have known if she had, the impact would have been enough to shake the house down to its foundations. I lifted it gingerly, turning it over to inspect the damage. The rear of the casing was bent and the textured green paint irreparably damaged. I was, to say the least, hopping mad. Several hundred dollars had been wiped from its resale value and God knows what damage I might find inside.

Disgusted, I placed it back on the shelf pushing it several inches back from its earlier position. I shook my head – how in the hell could that have happened?

Several months past before I could bare to look at it again. Eventually I took it into the workshop and removed the bent covers to inspect the damage. The impact had popped the vacuum tubes and a mechanical relay from their sockets. I pushed them back into place. Besides the damage to the paint, the chassis was so badly twisted that one of the supporting feet now hovered a good quarter of an inch above the bench.

I plugged it in, expecting nothing. Strangely everything seemed to work on receive at least. Encouraged, I connected it to an antenna, grabbed the microphone, cleared my throat and announced my call sign. To my surprise power needles flicked to very healthy deflections. Wow! I took a deep breath and called, “CQ CQ CQ,” – the amateur radio operator’s request for contact. Instantly a reply came in the form of a male voice with a deep southern drawl, from the other side of the continent, telling me that I had “five-nine” copy and good audio!

I still haven’t figured out how a 45 pound radio ended up on the floor and I doubt that I ever will. Having crashed to the floor myself – literally and figuratively on several occasions over the last few years, I am reminded that not only had other people “written me off”, that I had also taken to writing myself off. But parts of myself had been shaken up in my falls and and like the 901 DM, despite being a little tattered around the edges, I believe I am now in better working order than before.