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Baluns and Ferrites
Baluns, Chokes, Isolators, UnUns and Ferrite Toroids for HF+VHF. We offer the best prices for FT140-43, FT140-61, FT240-31 and FT240-43 toroids in the UK - perfect for your balun projects. The following chart shows how different ferrite materials perform across HF. The green band indicates "resistive", which is desired for best performance. In most cases, 8 turns on an FT240-31 (of RG58 or RG142 depending upon power requirements) will suffice. 12 turns is better for a <15MHz aerial setup.
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A general-purpose 1:1 Current Balun for use on HF with your 100w transceiver. This design uses..
£35.00
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..
£50.00
A 1:1 "micro" Balun for use on HF (best suited for 7-30MHz) for when you're out portable or need a l..
£15.00
This snap-on ferrite is a serious item - It's a 31-mix ferrite that is ideal for use as a mains filt..
£14.00
A multi-ratio UnUn for use on HF (1.8-30MHz) with up to 200w RF power. Sometimes, a single rat..
£40.00
A 4:1 Current Balun (Guanella) for use with OCFD, Loops and other situations where your aerial is ..
£38.00
A 4:1 Current Balun (Guanella) for use with OCFD, Loops and other situations where your aerial is ar..
£45.00
A 5mm Snap-on ferrite clip for keeping RF out of keyboards/mice and other Shack peripherals. Works w..
£0.75
A 9mm Snap-on ferrite clip for keeping RF out of keyboards/mice and other Shack perhiperals. A few l..
£1.00
A 1:1 Choke/Line Isolator for use across HF frequencies and handles up to 1kW RF power (assuming 1:1..
£42.00
This is a no compromise solution. A robust 1:1 Choke Balun for use with a Doublet or G5RV wher..
£42.00
The CobWebb is a popular antenna due to its small size - it's a 5-band HF aerial, under 8ft square, ..
£55.00
A small ferrite toroid for use in baluns and line-isolators. 8 turns of RG174 (100w) or RG316 (400w)..
£2.75
A small ferrite toroid for use in the G3TXQ 1:4 CobWeb balun.
175w AM/Digi, 250w SSB (assuming..
£3.00
For use in baluns and line-isolators. More than enough for UK legal power so perfect for your QRO ba..
£7.00
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