HamBuilder HBR4HF vs. HBR1HF QSO

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HamBuilder HBR4HF vs. HBR1HF QSO
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HBR4HF, 2 times dead TDA7052 audio chip. Everytime I replace it get fried by something. I send request to hambuilder but I do not know if i will get response.. Just a notice.

petrikajaneku