Baluns and Ferrites

Baluns, Chokes, Isolators, UnUns and Ferrite Toroids for HF+VHF. We try to offer the best prices for FT140-43, FT140-61, FT240-31, FT240-43 and FT240-61 toroids in the UK.  The following chart shows how different ferrite materials perform across HF.  The green band indicates "resistive", which is desired for best performance.  As you can see, 9 turns of coax on an FT240-31 will suffice.  Coax can be RG316, RG58, RG8 "mini" or RG142 depending upon your power requirements.

Ferrite Toroid Chart

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13mm Snap-on Ferrite Clip
A 13mm Snap-on ferrite clip for keeping RF out of keyboards/mice and other Shack perhiperals. A few ..
£1.75
1:1 Balun 100w
A general-purpose 1:1 Current Balun for use on HF with your 100w transceiver.  This design uses..
£40.00
1:1 Balun 400w
It's a bit of an animal - actually, it's a lot of an animal -  A 1:1 Balun for use on HF (1.8-3..
£48.00
1:1 μBalun 100w
A 1:1 "micro" Balun for use on HF (best suited for 7-30MHz) for when you're out portable or need a l..
£18.00 £15.00
31-Mix Snap-On Ferrite
If you're in need of a mains filter or ad-hoc RF choke, this snap-on 31-mix ferrite is a serious ite..
£15.00
4:1 Current Balun QRO
A 4:1 Current Balun (Guanella) for use with OCFD, Loops and other situations where your aerial is ar..
£50.00
5mm Snap-on Ferrite Clip
A 5mm Snap-on ferrite clip for keeping RF out of keyboards/mice and other Shack peripherals. Works w..
£0.85
9:1 UnUn 250w
A 9:1 UnUn for use on HF (1.8-30MHz) with up to 250w RF power. Use of counterpoise/radials may affec..
£35.00
9mm Snap-on Ferrite Clip
A 9mm Snap-on ferrite clip for keeping RF out of keyboards/mice and other Shack perhiperals. A few l..
£1.25
Balun Hardware Fixings
Our various Balun products come with M4 stainless-steel fixings but there are times when you might r..
£2.50
Choke / Line Isolator 400w
A 1:1 Choke/Line Isolator for use across HF frequencies and handles up to 1kW RF power (assuming 1:1..
£45.00 £40.00
Choke Balun for ATU/G5RV 400w
This is a no compromise solution.  A robust 1:1 Choke Balun for use with a Doublet or G5RV wher..
£45.00
CobWebb Balun Box
The CobWebb is a popular antenna due to its small size - it's a 5-band HF aerial, under 8ft square, ..
£60.00
End-Fed Half-Wave Coupler
The End-Fed Half-Wave is a popular choice for simple /P operating but can also be used equally well ..
£40.00
Ferrite Toroid FT140-43
A small ferrite toroid for use in baluns and line-isolators. 8 turns of RG174 (100w) or RG316 (400w)..
£3.00
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