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W7EXG USA flag USA

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QTH

W7EXG (Bill) is located near Tucson, Arizona,  among natural Desert Cacti growth of the Sonaran Desert, and is about 2 Miles from the Saguaro National Park.

  • Tucson, AZ. Temps
    • June/July High Average – 100 F (37.8C) (Record High 117F (47.2C) (1990))
    • 40 Days - Greater or equal to 100F (37.8C)  Average per year
    • Dec/Jan High Average – 65 F (18.3C)
    • Dec/Jan Low Average – 40 F (4.4C) ( (Record Low 6F (-14.4C) (1913))
  • Tucson, AZ. annual Rainfall is 11.6 inches per year. Half of rainfall occurs during the Monsoon Season -- July/Aug/Sept. Not always a DRY heat.

Below is a picture of W7EXG's SteppIR DB42 Antenna at QTH in the Sonaran Desert, among Saguaro Cacti shown. 

 

Below shows Details of the DB42. [5 element monobander -- (6m through 20m)  and 3 element (30m/40m antenna)]  Antenna height is about 60 feet (18.3m), and is on a 42 foot boom (12.8m). A 0.25 inch thick 2 inch mast is 15 feet long, with M2 2800 Orion Rotator embedded about 10 feet into the top tower section. Two thrust bearings help support the mast and its 300 lb load and torque, with a 20 sq. ft. wind load.  A 2m antenna sits atop the Boom Support Truss. All loop elements have truss support.

Below is a desert view from W7EXG QTH back yard.. toward the Saguaro National Park.

Biography

In 1956,  at age 13, I  received my WN7EXG Novice license at QTH in Eugene, Oregon.

My  1st CW rig was a homebrew crystal controlled 6AG7 oscillator, with a 6L6 Output stage, having an input power of  17 Watts.  I used a Hallicrafters S40B for my 1st general coverage receiver and 40m/80m Dipoles.

In the following years, I upgraded to a Heathkit DX35 AM/CW transmitter, and added a Heathkit VFO.

In 1958, after moving to Tucson, Arizona, I completed a homebrew VFO controlled AM/CW transmitter, running 50 Watts Input power.

In 1959, I upgraded to the Heathkit Apache (150W AM), and a Hy-Gain 3 ele 15M monoband Yagi.. and more dipoles.

In 1960,  I homebrewed a SSB Phasing Exciter for my first SSB phone operation, driving the Apache as a linear amp, to 180W PEP input power.

In 1966, I moved to the Phoenix area in Arizona, to pursue a professional career in the Electronics Industry.

In 1976, I built my 1st Transceiver – a Heathkit SB104 solid state rig.  Later, I added a  Heath SB200 amplifier, and upgraded to a 6 ele KLM 15M Monoband Yagi (36 ft boom) and more Dipoles.

In 1984, I upgraded to a Kenwood TS830, driving a Drake L7 Linear Amplifier with antennas cited above.

In 1990s, I modified circuitry of a Heathkit SB104 Solid State Transceiver, for pure solar power operation.  Using a 200W DC Solar panel, rig ran 100W PEP output, directly from the sun -- with NO BATTERY required in system. (Battery can be included for emergency operation).

I returned to Tucson, Arizona in 2010, (retired in 1995) where I now live, and I use a Yaesu FT2000D (200W PEP Output) into the SteppIR DB42, on a Crank-Up Tilt-Over 54 foot Tashjian tower. (See Photos above)

Best 73s to all!!

 

 

6151379 Last modified: 2015-07-16 00:19:22, 3756 bytes

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