EurekaSDR

Montana-built HF research network

Veteran-led · Integration engineering by BComm

Antenna systems

Site 1, Eureka, Montana DN28mu

ANT-01 — Hustler 6-BTV

Ground or short-post · 64 radials × 64 ft · R56

Photograph as ant-01-6btv.jpg

Six-band trap vertical. First sample of the ionosphere at this grid: lower-angle, vertical emphasis.

ANT-02 — 500 ft horizontal loop at 50 ft

Second sample of the same ionosphere

Photograph as ant-02-loop.jpg

Closed loop, five hundred feet of wire at fifty feet. Different angle, different polarization, often a quieter ear on local hash. Not a second 6-BTV.