NOTICE:This item's shell no punch holes. Because there are three types of antenna position, M seat are the same, different terminal punch locations.Please choose punch antenna location.

Small, field erection gantry can be fixed, portable, waterproof.
Circular : NXO-100
Circular material: nickel zinc ferrite
Magnetic conductivity: 100
Overall dimensions: outer diameter 31 mm * height 7 mm * diameter 18 mm
Center frequency: 15 MHZ
Application frequency: 1-30 MHZ
Waterproof Case Size: 65mm * 60mm * 35mm
It production 1:1, 4:1, 9:1 the package using the the large size NXO-100 magnetic ring and 1 mm in diameter enameled wire, can work in the 1-30MHz shortwave, can withstand high power of 100W-200W, such as magnetic Barron's ideal kit.
Types of antennas: 1: 1, 1: 4, 1: 9 three production program antenna optional, 1: 1 and 1: 9 is three enameled hinge, 1: 4 is two enameled wire.
1: 9 balun suitable long-term antenna , with manual or automatic antenna tuner tune-day use.
1: 4 balun applicable LOOP antenna to antenna and Winton (200-400Ω).
1: 1 balun antenna suitable for bipolar DP (inverted V n V), such as Yagi antenna (40-100Ω).
Kits include 1.5m wire, please fold to 3 fold, each fold 0.5m.
1: 1 winding method: three-wire twisted around 7 laps, stranding extent (about 3-4 times per centimeter)
1: 4 Winding method: two-wire twisted around 8 laps, stranding extent (about 3-4 times per centimeter)
1: 9 Winding method: three-wire twisted around 10 laps, stranding extent (about 3-4 times per centimeter)
Note: After stranding, first put heat shrinkable sleeve, and then pass on the ring! Enameled two leaving enough length, a good number of laps around a specified, will be evenly distributed on the magnetic coil, and then start welding enameled wire header and tail
. Pack: 1 balun DIY kit