Ramsey Electronics DA25 manual

Disk

Cone

Coaxial Cable Center Conductor

Coaxial Cable Shield

Mounting Pipe

Coaxial Cable

Ramsey offers two models of this particular antenna, one with no active components and the other with a low noise preamplifier to further boost the antenna gain.

The DA25 kit which you are about to assemble is the non-preamplified version. The advantages to this particular model are its ease of use (no external power required) and the fact that it can just as easily be used as a transmit antenna as well. Experimenters have used this particular design for a host of transmit applications including increasing the distance of their PC’s wireless LAN to boosting the range of cordless phones.

However, if your particular application is for reception only, and power is not an obstacle, you may decide to “upgrade” to the preamplified version of this kit, the DAP25. The good news is, if you have not begun assembly, you may return your kit for full credit towards the amplified version.

DA25 • 9