4:1 Current Balun
£55.00 £50.00
Dipole Centre Kit
£6.00 £5.00
RG316 Coaxial Cable
£2.50 £2.00

9:1 UnUn 250w

9:1 UnUn 250w
Brand: Ham Goodies
Product Code: HG-91UNUN
Availability: 6
Price: £40.00
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A 9:1 UnUn for use on HF (1.8-30MHz) with up to 250w RF power. A good starting point for a 14-30MHz solution is around 6.5-7m of wire up a non-conductive pole with a few radials approx 5m each.  Experimentation with both may affect (or improve) performance.

USE WITH : Random length end-fed wire/vertical - or see our End-Fed Halfwave Coupler

  • 9:1 ratio (450>50-ohms)
  • FT240 ferrite core (not iron powder!)
  • SO239 coax input and M4 (4mm) terminals for aerial+counterpoise
  • 80x85x55mm
  • Sealed with potting-compound - fully weather-proof
  • All fixings are stainless-steel
  • Weight: 300g

We like CB19917 from CPC for our aerial wire

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