174633.00 LEESON 174633 3HP SM2 SERIES FLUX VECTOR VFD,D2 HIDバルブ 8000K R/S共通 (GRX-93) | 株式会社アークス | スマホアクセサリー ヘルメット Bluetooth関連商品,Recently someone posted about accurate frequency standards and it reminded me of a rubidium frequency standard I put together about 12 years ago and which is still working well. At that time,,In 1955, transistors were rare and costed a lot for experimenters. A lowly 2N34 junction PNP for $10.75. Sylvania offered a 3N21, point contact tetrode transistor, for $25.20. Must have been a,ZX2043 中華製9バンドラジオキット その1 開封の儀 | バーチャル小林電気店