During a routine analysis of whistlers on the wide-band VLF recording of the DEMETER satellite. a specific signal structure of numerous fractional-hop whistlers. termed the "Spiky Whistler" (SpW) was identified. These signals appear to be composed of a conventional whistler combined by the compound mode-patterns of guided wave propagation. https://countryscenesaddleryandpetsuppliers.shop/product-category/weymouth-bridle-double-bridle-noseband/