NEC 21A

PA3PY-21A 172.1000

NEC 21A VHF receiver board, memory chips.

NEC 21A VHF receiver board, CPU and XTALs.

Hi-res memory and cpu/xtal side pictures.

PA4PY-21A UHF Skyper

NEC 21A UHF receiver board, memory chips.

NEC 21A UHF receiver board, CPU and XTALs.

Documented on hampager.de and jelmerbruijn.nl. Images are taken from jelmerbruijn.nl for comparison.

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