I own property about 50 miles north of my home in a major city with an FM transmitter. Radio reception is questionable (some radios are very clear, others not very clear). Received this to try on my Grundig FR-200, usually not totally clean, and used the antenna mount attachment. Changed a bit, but not much. I tried to fully stretch and leave myself curled up. It was about the same as without. So I can't give a very good rating as it wasn't a really tough test for the additional antenna.
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