The DLARC Dispatch
The DLARC Dispatch
Your Monthly Signal from the Detroit Lakes Amateur Radio Club
Your Monthly Signal from the Detroit Lakes Amateur Radio Club
Embedded Files
Detroit Lakes Amateur Radio Club • [Month], [Year]
www.w0emz.orgIn This Issue
In This Issue
On the Air & On the Calendar
Key Up for These Events!Wavelength Wisdom
Your Technical Tip(s) of the Month!Member Spotlights
The Ham Behind the Handle!Stay Connected!
Where The Ragchew Never Ends!On the Air & On the Calendar
Key Up for These Events!On the Air & On the Calendar
Announcements
Announcements
THE HAM & EGG NET
The Holiday Inn has changed things up. The only option for breakfast is now the buffet.
Wavelength Wisdom
Your Technical Tip(s) of the Month!Wavelength Wisdom
Who Needs a Lab? Pills, Tape, and Mutual Inductance
Who Needs a Lab? Pills, Tape, and Mutual Inductance
Jim Bowlby (KF0SVB) sent in a brilliant "field report" on the power of mutual inductance. Using what can only be described as "exquisite" construction—a CVS pill bottle, some cardboard, and a bit of tape—they proved that you don't need fancy gear to see physics in action.
By nesting two coils, they were able to swing the total inductance significantly just by flipping the orientation.
Check out these bench results:
Check out these bench results:
Individual Coils: $L_1 = 4.016 \mu H$ | $L_2 = 3.175 \mu H$
Series (Far Apart): $7.402 \mu H$ (Almost exactly the sum of both!)
Nested (Phase-Additive): $10.18 \mu H$
Nested (Phase-Subtractive): $4.681 \mu H$
It’s a great reminder that in ham radio, "ugly construction" often yields beautiful data!
Technical Tips & Tricks
Technical Tips & Tricks
EZNEC Antenna Modeling
In this video, Ted Edwards (W3TB) shows us how to get started with EZNEC by modeling a dipole. Several versions are created. This is a very good introduction to get you up-and-running quickly with EZNEC.
APRS is more than just
dots on a map...
If you’re like most hams, you probably think of APRS (Automatic Packet Reporting System) as a tool for tracking your location or seeing who is driving nearby. But what if I told you it’s actually a powerful, global messaging network?
Member Spotlights
The Ham Behind the Handle!Member Spotlights
Gerald Parker (K0GPX)
This month’s Member Spotlight shines on Gerald Parker, K0GPX, a true living link to the early days of amateur radio. First licensed in the mid-1950s, Gerald’s lifelong passion for CW, vintage vacuum-tube equipment, and WWII military radios reflects a deep respect for both the technical and historical roots of the hobby. With decades of experience, an impressive collection of classic gear, and a willingness to help others learn and build, Gerald represents the knowledge, curiosity, and craftsmanship that continue to inspire today’s amateur radio community. Read more!
CQ CQ From his shack!
Stay Connected!
Where The Ragchew Never Ends!Stay Connected!
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