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- radioresearchinc (23102)- Feedback left by buyer.More than a year agoVerified purchaseGood buyer, prompt payment, valued customer, highly recommended.
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Reviews (2)

Oct 03, 2020
Simple oscillator that produces a clean output around 400 Hz.
Simple oscillator circuit that gave me a 400 Hz tone I was looking for to implement into another project.

Feb 04, 2020
Value for my money
Swapped SIM card to new phone and all is good.