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出土文物之所以有观赏价值,原因之一就是它能使当代的人们亲眼见到古老的历史,彷佛延长了人们的生命,老收音机也是这样。前不久,尼摩船长淘到一件宝物——几十年前的国产商品矿石机机匣,还有原配商品固定矿石1枚(带支架)。后来船长把这个罕见宝贝留在俺这儿,由于俺当年见过、用过这样的矿石机,所以决定尽可能把它复原,也借此机会感谢船长!
细看,机匣很可能是大跃进时期北京一个街道工厂的产品,手工作坊的风格很鲜明。
说是复原,其实很难100%做到。因为原样的零部件早已散失殆尽,只能尽可能复原了,故把复原二字以引号括起,算是自嘲吧。
坛里很多年轻朋友没见过商品矿石机,俺show的这个可说基本反映了原来的样子。从外观上看,零部件的布局与原样一致,电路图也是原样的。
机器里,矿石是商品固定矿石,有的原机就是使用固定矿石的,也有使用活动矿石的。线圈是双回路,我这个线圈是自绕的,但大小、外观则保持原样。原机用的分线器俺没有,只能用波段开关代替。原机单连是一种做工比较粗糙的360p,跟后来的标准化的空气单连不一样,俺这儿只有薄膜单连。接线柱俺这回用的是香蕉插头,原机不是,是那种老式的、铜拄加塑料罗帽的,坛子里有人show过。
特别说明一下刻度盘。原机是铝片印字的,俺这儿用的是水晶无线电网友在“古典收音机刻度盘艺术”一帖里提供的图样,到冲印店冲出来的,很美观实用,在此表示感谢!而天地线、耳机的标签则是PS的,与度盘一并印出。原机的天地线耳机标签是压在各自的接线柱下边的圆形标签。
试听效果:在北京市中心,室外天线,高5米长10米,可收本市9个电台,音量中等到宏亮。分线器可调节到适当音量,音量大则选择性差,音量小则选择性好。
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