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Mount Houghton W7N/WC-002 Activation
Operating Position on Mount Houghton, Mount Rose W7N/WC-001 in Background Summit Trip Summary Distance: ~ 4.8 mi one way Transport: ...

Dan Koellen AI6XG
Dec 9, 20203 min read
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Scott Peak W6/NS-153 Activation
Operating Position on Scott Peak Summit Trip Summary Distance: ~ 4.2 mi one way Transport: Hiking Elevation Gain: ~1700 feet Time: ~2...

Dan Koellen AI6XG
Dec 2, 20202 min read
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Granite Chief W6/NS-115 Activation
Operating Position on Granite Chief Summit Trip Summary Distance: ~ 4.6 mi one way Transport: Hiking Elevation Gain: 2748 feet Time:...

Dan Koellen AI6XG
Nov 29, 20205 min read
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Wishing You a Very Random Christmas
Being the holiday season I decided to post this article from the December 2014 issue of Nuts & Volts magazine www.nutsvolts.com that I...

Dan Koellen AI6XG
Nov 23, 20201 min read
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Trapped 20/30/40 Meter EFHW Antenna
An End Fed Half Wave (EFHW) antenna for operation on 20, 30 and 40 meters was built for SOTA operation. By using traps, the antenna...

Dan Koellen AI6XG
Oct 4, 20208 min read
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Big Font Clock Update: Dimmer-Interface PCB and Setup Instructions.
A prior post described the development and build of a clock to display time and date for UTC and Local. The clock characters are large,...

Dan Koellen AI6XG
Jun 29, 20207 min read
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End Fed Half Wave Antennas: More About the Primary Capacitor
I recently posted a blog claiming that a capacitor in the primary of the matching transformer is not needed for end fed half wave (EFHW)...

Dan Koellen AI6XG
Jun 5, 20204 min read
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End Fed Half Wave Antennas: Is a Primary Capacitor Really Needed?
In my research on End Fed Half Wave (EFHW) antennas I found that nearly all have a capacitor in the primary (rig) side of the transformer....

Dan Koellen AI6XG
May 27, 20203 min read
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Auto Run for your Raspberry Pi - how to have your Rpi boot up in the desired configuration.
The Raspberry Pi (Rpi) is a great single board computer (SBC) that can be used in many projects and comes in different configurations. I...

Dan Koellen AI6XG
Apr 5, 20203 min read
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Big Font Clock - Relieve for Old Eyes
Recently the Maker Space that I frequent received a number of 4 line 40 character (4 x 40) LCD displays. They asked me to figure out how...

Dan Koellen AI6XG
Feb 9, 20209 min read
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Castle Peak W6/SN-038 Activation
Operating Position on Castle Peak Looking Southwest Summit Trip Summary Distance: ~ 3.5 mi one way Transport: Hiking Elevation Gain: ...

Dan Koellen AI6XG
Jan 12, 20203 min read
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Sand Ridge W6/NS-155 Activation
Operating Position Looking South From Sand Ridge Summit Trip Summary Distance: ~ 6.5 mi one way Transport: Hiking Elevation Gain: 1200...

Dan Koellen AI6XG
Jan 12, 20204 min read
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Mount Lincoln W6/NS-149 Activation
Looking east from Mt. Lincoln, Tinker Knob W6/NS-121 is hiding behind Anderson Peak Summit Trip Summary Distance: ~ 3 mi one way...

Dan Koellen AI6XG
Jan 11, 20202 min read
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Signal Hill (7751) W6/NS-393 Activation
Looking east from Signal Hill, Donner Lake is in the background and Lake Angela in the foreground Summit Trip Summary Distance: ~ 2 mi...

Dan Koellen AI6XG
Jan 11, 20202 min read
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Tinker Knob W6/NS-121 Activation
Summit Trip Summary Distance: 7.2 mi one way Transport: Hiking Elevation Gain: 1870 feet Time: ~3.5 hours one way Route: Via Pacific...

Dan Koellen AI6XG
Jan 9, 20203 min read
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How to do a SOTA Activation
SOTA activations are challenging and with risk, be sure you are experienced in hiking, navigation and survival skills.

Dan Koellen AI6XG
Jan 5, 20206 min read
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SOTA - What is it? Why I do it
What is SOTA? SOTA, or Summits On The Air, is basically an activity where ham radio operators take their radio equipment to a hill or...

Dan Koellen AI6XG
Dec 22, 20193 min read
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