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Reviews For: Begali Coherer

Category: Ham Shack Accessories

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Review Summary For : Begali Coherer
Reviews: 1MSRP: 139 EUR
Demo device for the earliest transmitter: Marconi coherer
Product is in production
More Info:
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
WA8JNM Rating: 2011-07-17
Excellent demo device Time Owned: 0 to 3 months.
This is a wonderful way to demo Marconi's first receiver. A coherer is just a glass tube with metal filings in it. The filings coalesce in the presence of RF. The product transmitter is just a hand spark generator with a brass dipole attached. The "receiver" is just a little coherer with a light attached that shows when the filings become grouped together and conduct power from a battery when in the presence of the RF from the spark. Very neat. Highly recommended. I've never seen a coherer before, let alone one that can be demonstrated. Well worth the money, and I think will be an excellent way to introduce radio to a shack visitor.