2007-09-01

RadioSport Tips | Sleep Deprivation

What happens when a RadioSport operator like myself turns 43-years old and plans to gut it out in the chair. What can I anticipate after 8 or more hours of consecutive contesting? Cognitively and physiologically, I'm devoting processing resources such as memory, visual, and auditory over a span of time while sitting in a confined space.

Sleep deprivation impairs high level, executive thinking and even one night of sleep deprivation diminishes cognitive processing in working memory and language according to Carpenter (2001). However one's cognitive resources default to supportive components as the brain adapts as suggested by researchers at the University of California, San Diego (Carpenter).

Stages of Sleep

Stage One happens when one begins to drift or becomes drowsy. This stage is referred to as theta activity. The characteristics of Stage Two sleep is rhythmic electrical bursts between 12 to 15 Hz often referred to as sleep spindles. Stage Three electrical activity ranges between 4 to 7 Hz called delta waves in addition to sleep spindles. The last stage of sleep is Stage Four and it is the deepest of all states and it is characterized by extensive delta wave patterns (Solso, 2001).

Brain Structure

What are the components of my contesting brain? Physiologically, my hindbrain consists of the following sub-components like the medulla, the pons, cerebellum, and reticular formation. Collectively, they regulate autonomic functions which are beyond my conscious awareness. Heart rate, blood pressure, and respiration are basic factors to gutting out the operating chair and the medulla is responsible for my success in the chair. Furthermore, the pons oversee regulation of one's sleep-wake cycle. Taken together, the medulla and pons, are particularly sensitive to chemically induced change. Overall, my cerebellum has the heavy duty task of planning, coordinating, and ensuring the smooth functioning of complex motor activities such as keying, typing, and pressing buttons on my transceiver throughout a contest (Broderick & Blewitt, 2006).

The midbrain is comprised of several small components such as superior colliculi, inferior colliculi, and substantia nigra. As a whole, they handle the processing responsibility of vision, hearing, and consciousness. In addition, the midbrain is networked with the reticular activating system found in my hindbrain. KA3DRR's midbrain receives visual and auditory input from the environment (Broderick & Blewitt, 2006). For example, processing Morse code using headphones while simultaneously keying the computer and processing change in score.

Lastly, my forebrain and its most recognizable component is the cerebrum. My cerebrum is separated into two hemispheres; left and right. A fiber network called the corpus callosum transfers information between the hemispheres. Language and speech are typically found within the left hemisphere and visual-spatial skills in the right. It is worth mentioning that my frontal lobe is responsible for voluntary muscle movement, planning, goal setting, and decision making.

In addition, the limbic system comprised of the hippocampus, amygdala, spetum, the thalamus, and hypothalamus regulate emotions. The limbic system operates in unison with other parts of the brain which helps me to think and reason. My thalamus is the primary switchboard operator who directs sensory traffic such as visual, auditory, touch, and taste to appropriate destinations within my contesting brain. My hypothalamus regulates hunger, thirst, body temperature, and breathing rate as well (Broderick & Blewitt, 2006).

In Sum

As an aging, re-entry level RadioSport operator it is important for me to develop not only a successful contesting strategy but a winning cognitive and physiological strategy as well. I believe, understanding the functions of my contesting brain and the effect of sleep deprivation on my performance, is a good first step.

Physiologically, I'm not as resilient as a 25-year old or 35-year old anymore and investigating current research will help me develop a nutritional/physical program and operating/sleep schedule in order to maximize my cognitive resources while gutting out the operating chair. One might look at successful training programs of endurance athletes such as ultra-marathoners or mountain climbers for example.

According to Broderick and Blewitt (2006) the hindbrain, the midbrain, and the forebrain comprise KA3DRR's contesting brain. Supportive systems such as the medulla, the pons, reticular activation, thalamus, and hypothalamus play a crucial role in my operating success. Each influencing the other through the long stretch in the operating chair.

Furthermore, researchers at the University of California, San Diego continue investigating the effects of sleep deprivation and cognitive performance (Carpenter, 2001). Researcher results indicated poor performance on math and verbal tests after sleep deprivation according to Carpenter's article.

73 from the shack.

Reference:

Broderick, P. & Blewitt, P. (2006). The Life Span: Human Development for Helping Professionals [2nd ed.] Pearson Prentice Hall, Upper Saddle River, New Jersey.

Carpenter, S. (2001, October). How does the brain catch up? [Electronic Version]. Monitor on Psychology, 32, Retrieved on September 1, 2007 from http://www.apa.org/monitor/oct01/braincatchup.html.

Solso, R. (2001). Cognitive Psychology [6 ed.] Pearson Education Company, Needham Heights, Ma.

2007-08-31

The Definitive NA Sprint mp3 Audio Collection

I continue scouring the Internet in search of RadioSport techniques and strategy. One recent cyber adventure revealed a definitive collection of NA Sprint practice audio.

K5TR's NA Sprint Practice mp3 Audio Files.

An athlete must practice and K5TR went the extra mile providing his open resource of practice audio files for free. I downloaded one file last night into my Real Player for a listen. The time spent copying varying code speeds builds my confidence. One might consider this collection of audio files as a Sprint pre-season. Additionally, K5TR varied the audio tone from 300 to 700 Hz while including text for download. I like this feature because signals on HF do not sound the same. Each mp3 is 5 to 6 megabyte.

Benefit for entry-level RadioSport Operator.

  • K5TR's NA Sprint Practice mp3 collection is free.
  • Practice builds confidence.
  • Confidence leads to success.

Many thanks goes out to K5TR from the RadioSport Blogosphere. His effort and time is appreciated. Think Sprint mp3 practice audio files and operate Sprint style.

73 from the shack.

Reference:

K5TR's NA Sprint practice audio files Retrieved on August 31, 2007 from http://www.kkn.net/~k5tr/audio/sprint_practice/.

2007-08-29

RadioSport Tips | Operate Sprint Style

As strategy is important so is technique. One hot deal going on over at the American Radio Relay League (ARRL) is the Contester's Rate Sheet. One will find an operating tip section in the read and this month's tip is golden for entry-level operators thinking about the Sprint.

One fundamental aspect of Sprint is the QSY rule and spinning the dial can be tiresome. How can I move beyond the spin?

Variable Frequency Oscillator (VFO).

  1. Start with both VFOs equal that is VFO A = VFO B.
  2. Tune VFO A until one finds a station.
  3. Call the station.
  4. If not successful the first time quickly set VFO A = VFO B and spin.
  5. Find a station and call.
  6. If no success move between VFO A and VFO B until you succeed.
  7. After successfully completing the exchange jump to the other VFO then quickly set VFO A = VFO B.
  8. Repeat steps.

Benefit for Entry-Level RadioSport Operator.

  1. Maximizes your search and pounce technique.
  2. An operator can make a lot of -Qs in a hurry when making a pass through a crowded band.

I plan on using the VFO A = VFO B operating technique during Sprint as suggested.

Reference:

American Radio Relay League (2007, August 22). Operating Tip. Contester's Rate Sheet.

2007-08-27

RadioSport Tips | North American Sprint CW Strategy

Basic elements in RadioSport, at least from my perspective, are successfully completing a QSO and scoring multipliers. I'm developing my operating strategy from this point-of-view. In addition, an operator needs a game plan and strategy is elemental. There are excellent resources available and N6TR's Sprint Survival Page is one of them.

Think Sprint and operate Sprint style.

First, KA3DRR is not a kilowatt station with yagi antennas or even a station running 100-watts into a tri-bander. This is strategy filter number one. Secondly, KA3DRR is 40-watts into a center fed inverted-L doublet at 30-feet. This is strategy filter number two. Next, KA3DRR can add points and potentially a multiplier for others. This is strategy filter number three. KA3DRR's cascade of strategy filters reduces operating expectations to within reasonable given my station configuration.

Think Sprint and operate Sprint style is my motto.

The Go-To template for Sprint strategy is N6TR's The Sprint Survival Page compiled by veterans of this unique North American RadioSport event. Here are suggestions found within this valuable National Contest Journal online document --

  • Most stations begin on 20-meters however a number of mid-west/east coast operators begin on 40-meters. Why? According to N6TR, propagation is a factor as skip lengthens through the evening (n.d.). Keep in mind major population centers and skip while developing one's Sprint band plan for the evening.
  • Time charts are worth considering as N6TR suggested that by 0130Z most of the activity happens at mid-field that is 40-meters. However 20-meters is not without point and multiplier potential up until 0230Z according to The Sprint Survival Page. One might check the action on 20-meters at 0200Z and up until 0230Z.
  • If thinking about Sprint operate Sprint style. One may find other entry-level operators in the upper 10 kHz of the typically used Sprint frequencies (N6TR). I found this strategy particularly useful in my first Sprint before blowing a circuit breaker.
  • Most operators go keyer-to-keyer in the 80-meter red zone during the last hour (N6TR).

The fundamental rule in NA Sprint CW is QSY. I'm not an authority on this or can I provide a beneficial explanation. What I can say is this -- think Sprint and operate Sprint style. N6TR's Sprint Survival Page is a stellar resource and leaves no room for under-interpretation. Use the link provided in my reference or multiplier section for a full and authoritative explanation by seasoned Sprint operators.

An added bonus within this resource are example cw Sprint QSOs. Now is the time to practice, keep in mind, practice breeds confidence. Furthermore, like any other sport, one needs strategy and the Sprint Survival Page is one stellar resource.

Got strategy? Think Sprint and operate Sprint style.

73 from the shack.

Reference:

N6TR (n.d.). Sprint Survival Page. National Contest Journal Retrieved on August 27, 2007 from http://n6tr.jzap.com/sprint.html.

2007-08-26

2007 RadioSport Schedule

Our summer season is coming to a close and a new season begins. My 2007 RadioSport schedule looks like this --

  • North American Sprint, CW 0000Z-0400Z September 9th.
  • California QSO Party, 1600Z October 6th - 2159Z October 7th.
  • ARRL Sweepstakes Contest, CW 2100Z November 3rd - 0300Z November 5th.
  • CQ Worldwide DX Contest, CW 0000Z November 24th - 2400Z November 25th.
  • ARRL 10-meter Contest, 0000Z December 8th - 2400Z December 9th.

My first goal is completing each contest. The objective is maximum operating time in the chair. Secondly, to follow prescribed operating techniques for example, Bill Fisher, W4AN (2001) suggested in his CW Sprinting - Beginners Guide the following operating techniques --

  • Read the rules.
  • Focus on accomplishment and improvement rather than comparing one's score against other competitors.
  • Relax.
  • Call CQ at a comfortable speed either high or low on the band according to Fisher (2001). This technique sets the tempo of the exchange according to one's skill set.
  • The Sprint typically begins on 20-meters and progressively works itself down to 80-meters. Fisher suggested 40-meters first if 20-meters is out-of-reach of one's current skill set. Then, after the initial rush and the activity picks up on 40-meters, make your 20-meter move.
  • QSY to the 80-meter red zone at 0230Z then as suggested above QSY back to 40-meters when activity begins to peak on eighty (Fisher).

KA3DRR personally challenges all entry-level RadioSport operators whose stations are low-power, low-profile or very low-power, very low-profile. My challenge? Operate the entire 4-hours of the Sprint, make at least 25 or more QSOs in conjunction with as many multipliers as possible. The ultimate goal is fun. Low-power to very low-power is less than 100-watts and low-profile to very low-profile is any type of wire or vertical antenna. One must operate within a CC&R challenged location i.e. condo, apartment, trailer park, and/or housing development.

I would like read about your RadioSport successes. Questions to think about 1). Who was your favorite operator? 2). Your favorite band? 3). Longest hop? 4). Shortest hop? 5). Best operating moment? 6). Worst operating moment? 7). What was learned from the experience? and, 8). Did you work any stations on all three bands 20, 40, and 80-meters?

More to follow as we prepare for the North American Sprint CW contest in September.

73 from the shack.

Reference:

Fisher, B. W4AN (2001). CW Sprinting - Beginners Guide. Retrieved on August 26, 2007 from http://www.contesting.com/articles/198.