Whilst a choke of this sort might look a little tidier, you can easily make your own air-wound version just by rolling a few coils of coax around a plastic pipe. This both saves you money and reduces the extra losses introduced by additional connectors.
Type 31 ferrites for sale on Ebay. |
If you really want a linear, rather than coiled choke like this, you can buy the ferrites off the likes of Ebay for about a quarter of the price of a ready-made, commercial offering.
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