A 9:1 UnUn for use on HF (1.8-30MHz) with up to 250w RF power. For use with "random" end-fed wires.
Use of counterpoise/radials is advised.
- 9:1 ratio (450>50-ohms)
- FT240 ferrite core (not iron powder!)
- Use with random end-fed wire or vertical - or see our End-Fed Halfwave Coupler
- SO239 coax input and M4 (4mm) terminals for aerial+counterpoise
- Sealed with potting-compound - fully weather-proof
- All fixings are stainless-steel
- Weight: 300g
We like CB19917 from CPC for our aerial wire