4 el. 30/17m Yagi

30/17 meter 4 element beam Yagi (10-18 MHz).

30m shortened element with high-Q loading coils.
No traps or relays, one single coaxial cable.

Boom made from 50mm tube.
Elements made from 35 to 12mm tube.

Specifications

• Forward gain in free space 30/17m (dBi): 4.9/5.7

• F/B ratio 30/17m (dB): 14/17

• Active element 30/17m: 2/2

• Frequency coverage 30m (MHz): 10.100 - 10.150

• Frequency coverage 17m (MHz): 18.068 - 18.168

• Bandwidth @ 1.5 VSWR 30/17m (kHz): 100/420

• Feed impedance (ohms): 50

• Power handling (kW): 5

• Longest element (m)/(ft): 12.20/40.0

• Boom length: 3.75/12.3

• Turning radius (m)/(ft): 5.92/19.4

• Weight (kg)/(lb): 22/48.4

• Wind survival (km/h)/(mph): 130/80.8

• Standard Mast size (mm)/(inch): 50/2 (55/2.25 or 60/2.50 optional at no extra cost)

Greases supplied

2 kinds of grease are supplied with your antenna:

• Aluminum contact grease: Professional grease containing 30% aluminum particles, recommended for the assembly of aluminum antenna tubes. Prevents binding, corrosion and the formation of aluminum oxide, and allows easy dismantling of antennas after several years.

• Copper conductive grease: Professional conductive grease with a copper base, recommended for all hardware requiring a sound and lasting electrical contact. Prevents oxydisation, damp ingress, and limits chemical reaction between stainless steel and aluminum.

Balun or no Balun ?

• This antenna does not require any balun.

• To avoid having stray current on the braid of a coaxial cable (often the cause of RF and/or TVI/BCI), you can make your own 1:1 choke balun with coaxial cable. Explanations are provided with antenna assembly instructions. (See also our F.A.Q).