*Series XP80 - 8 m / 26-ft Boom*
- 10-12-15-17-20-30-40 m

- Basic Kit (XP804): 4-band 10-12-15-20 m

- Add-on Kit (XP808): 6-17-30 and 40 m

### Active Elements

**20 m**
**5x driven full size (1/2 wavelength) elements**

LOG-1 + LOG-2 + LOG-3 + LOG-4 + LOG-5
**15/17 m**
**5x extended 1/2 wavelength plus elements about 5/8 wavelength long**

LOG-1 + LOG-2 + LOG-3 + LOG-4 + LOG-5 + EL-1B on 15 m + EL-1C on 17 m + EL-5A
**10/12 m**
**10 x 1/2 wavelength collinear elements 2 x 5 side by side**

LOG-1 + LOG-2 + LOG-3 + LOG-4 + LOG-5 + EL-1A + EL-2A + EL-3A + EL-4A + EL-1B as 3/8 radiator
**30/40 m**
**All driven elements**

LOG-1 + LOG-2 + LOG-3 + LOG-4 + LOG-5 + EL-1B + EL-1C + EL-5A as "C"

**NOTE:** Well-built multiband beams with driven elements have a 1-2 dB higher gain than conventional systems with the same boom length and bandwidth (better element illumination).
With a boom size of 8 m / 26 ft,
the XP80 is a real surprise, even for experienced DXers! Not only in the transmitting
mode, but also when receiving rare DX signals near the band ends. In critical
pile-up situations, the XP80 yields an outstanding and unexpected signal reading
and shows well its enormous directivity and the capability to fade-out heavy
QRM interfering from the side and back.

The model XP804 antenna is shown in Figure A. In this configuration the 20m band is using five actively driven full-size elements and turns out a solid 10 dB/D forward gain.

For the **15 m (and 17 m) band**, five directly fed 5/8-wave elements, in conjunction with elements 1B and 5A, provide a typical 10.5 dB/D forward gain. Operation on 17 meters requires an optional 8.2 m (26 ft) element at boom location **Z** which does not influence the 10-20 m settings, but has the same properties on 15 m.

All elements are working on **10 and 12 meters** and contribute to a 10-11 dB/D gain.

A coaxial T-match system on Log. 5 enables operation on the** 30 m band** without any mechanical extensions. The typical gain with this configuration is about 0 dB/D.

The** 40m band** is activated by use of an individual power coil at **Y**, yielding a 0 to 3 dB/D gain on this band.

*Remember, a 3-element monoband beam has 4 to 6 dB/D (see ARRL Antenna Book).*

**Notes:**

* Gain determined in the main lobe as described in the ARRL Antenna Book, 14th ed. pg. 15-23. Measurement accuracy according to CCIR plus/minus 2dB.

** F/B ratio and SWR vary according to conditions--e.g., electrical height above ground.

*** Plus or minus10%

**Sommer Antennas**
P.O. Box 710

Geneva, FL 32732

Phone: (407) 349-9114 | Fax: (407) 349-2485