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271 [2007/02/19 20:28] n5na |
271 [2007/05/21 00:41] (current) |
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===== Description ===== | ===== Description ===== | ||
- | Optional plug-in crystal to add the 15 meter band, 21.0 - 21.5 MHz, to the Century 21 Model [[570]]. Later models shipped included this crystal. | + | Optional plug-in crystal to add the 15 meter band, 21.0 - 21.5 MHz, to the Century 21 Model [[570]]. Later models included this crystal. |