Sean Victor Hum A bit about me

Mountains

Having grown up in the Canadian Rockies I have spent much of my life hiking, backpacking, scrambling, skiing/snowboarding in the mountains. I still take an annual ‘pilgrimage’ to the Rockies and other mountainous areas around the world to get my fix.

Home, sweet, home: Lake O’hara, in the Contiential Divide near Lake Louise, Alberta


Cycling

I also mountain bike though I have turned into a road-biker since moving to Ontario. I used to ride a 1997 Gary Fisher Paragon hard-tail bike, but since moving to Ontario I’ve become an avid road cyclist. My "serious" wheels are an Argon 18 Radon (a hybrid aluminum / carbon fibre bike), a great ride from a great Canadian company. For commuting, I recently discovered a great local company, Gallant Bicycles who make-to-order bicycles. I use a single-speed Gallant for commuting to work, which is a great no-nonsense bike with an added benefit of giving a training effect due to the single gear.

Cycling the 140km 2012 inaugural Gran Fondo in Banff, Alberta.

Completing the 2014 inaugural Gran Fondo in Niagara Falls, Ontario.


Electronics

From an early age I've been fascinated with electronics, mainly in two areas: radio and high-fidelity audio. My interest in the former inspired many grand experiments growing up, from small crystal radios to large Tesla coils, and ultimately culminated me in pursuing higher education in the area. I also became inspired to become an amateur radio operator in 1997. I am currently have an amateur radio license (advanced class) under callsign VA3SHV (previously VE6SVH). While I was active mainly on 2m in the early days, recently I've become interested in digital modes on HF, such as PSK31, JT65. I am also interested in amateur satellite communications at VHF with the AMSAT satellites.

Home-built 40m superheterodyne transceiver

Home-built "ultra-linear" class-A push-pull amplifier based KT77 tetrodes.

My interest in high-fidelity audio stems from listening to people debate whether solid-state or vacuum-state electronics has "the best sound." It seemed the only way to resolve this debate was to try building a vacuum-state amp myself. I've recently dabbled with a few "kinkless tetrode" designs that have become my favourite for listening around the house. My conclusion is that of course it is suggestive and the preference related not so much about the faithful (high-fidelity) reproduction of sound but the warmth (or lack thereof) offered by various amplification platforms. For me, it's just all about the fun of building these things!


The Rest

While all the stuff above is great, nothing in life brings me more happiness than these little guys! Recently asked if they seem like double the work, I responded simply:

  work = +3 dB
  joy = NaN