熊猫1501/1502电路图

腊月十八

日前偶得一旧书《收音机手册》第2集，系1958年－1963年期间出品的一些国产收音机电路图。时见坛中朋友谈论电子管调频机的文章，今传上《熊猫牌》1501/1502收音机电路图，希望对诸君有用，只是调频接收范围为64.5～73MHZ。<img src="attachments/94kk/2005931545338.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window
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腊月十八

复诸君：
1.谢各位指点。
2.很高兴为大家服务。
3.打算：
      先把该书目录传上；
      各位需要哪图告诉我，复印后寄各位；
      再设法全书传经典书籍版，不过时间将会很长，一方面我的拍照、电脑水平实在太差太差。再者，需上班时趁空而为，很是不便。见谅。

      不知妥否?

腊月十八

照片效果欠佳，特别元件表，无法辨认，但－－－我已经：
1000W 碘钨灯、距书 1.2米、垂直照射书面；相机距书 0.5米；不用闪光灯。
感觉光线足够明亮，不知为何依旧模糊？而相近条件下另一张则清楚：<img src="attachments/94kk/20059315585896.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window
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CTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open('attachments/94kk/20059315585896.jpg');}" onmousewheel="return imgzoom(this);" alt="" />
顺便问一下：
上图板子右上方七只是何规格的“中周”? 能否用于收音机? 请哪位解惑? 谢谢!
(该线路板从废品站找来，没有见外壳，象是电话机里的，因见几个收废品人正在包装砸开的电话机塑料壳，地上散有一些破碎的线路板，找了块好点的，要了我 2 块钱! 据他们说，以前曾砸过许多收音机，为得到塑料！可惜！来迟了！)

腊月十八

1.线路板上“中周”外形尺寸：7*7*12豪米。
2.集成电路：( MC34018P/HHSO9248 )、 (  LSC417021P/BW01-1010B/4D55ALLFJ9252 )、 ( MC14066BCP/FFMV9247 )、 ( MC14069UBCP/FFQP9239 )、 ( MC14069UBCP/FFKD9230 )、 ( LM567C/219 )、( LTV817/LITEON )、( 7808CT/QGL239)。标“摩托罗拉”标记
3.三极管：A102、A1267Y、C107、C3199Y、－－等等。
4.二极管：看不清型号，透明玻璃，比米粒还小，三十多只。

上述元件在收音机方面可否利用?

zxy2266

你好,可以给俺复印一份寄来吗?我可以出邮寄费和复印费的,谢谢了

3ax31e

你的板子可能来自一台无绳电话
芯片MC34018是话筒和扬声器组合处理电路
<img src="attachments/94kk/200594114795.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window
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CTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open('attachments/94kk/200594114795.gif');}" onmousewheel="return imgzoom(this);" alt="" />
MC14066和MC14069是模拟开关和反相器 性能和CD4066 CD4069一样
LM567经常作音调检波
<img src="attachments/94kk/200594131495.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window
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CTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open('attachments/94kk/200594131495.gif');}" onmousewheel="return imgzoom(this);" alt="" />
至于三极管都是日本型号 A字头的就是2SA系列 高频 PNP管 C字头的就是2SC系列 高频NPN管子 日本的晶体管型号看不出管子的材料和功率大小 可以查手册
比如C3199就是2SC3199
<img src="attachments/94kk/20059415095.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window
CTRL+Mouse wheel to zoom in/out';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new window
CTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open('attachments/94kk/20059415095.gif');}" onmousewheel="return imgzoom(this);" alt="" />

您的书很棒 是宝物啊 可否上传到经典书籍版？请拍照时候选用手动测光 人工白平衡 这样图片会比较好看 至于清晰度是由于压缩的太厉害了 您拍照的时候选用最高清晰度 拍成黑白（灰度）照片 再处理成黑白（两色）GIF格式图片 体积就会小于150K 满足论坛发帖子的要求 否则是看不清楚上面的字的 或者用扫描仪直接转成黑白的GIF图 体积很小

哈色勃莱德

资料真好,不清楚可惜啊，

不清楚的原因通常 是对焦的问题，没有对准，也可能快门速度较慢，拍摄时手发抖所致，也有可能是后期处理不当，压缩过大，造成图片信息损失

解决的办法：

1 对焦不准：注意对焦，瞄准所摄物体后，先半按快门按钮（即按下快门按钮行程的一半，手指头上会有明显的感觉），此时相机自动对焦，待相继发出对焦准确的提示音后，或者待液晶屏幕出现对焦准确的提示图案后（通常是绿色的方框），再平稳的按下快门按钮的另外一半行程。

2 手发抖：  最好的办法是把相机放在稳固的三脚架上拍摄。如果没有脚架，可以把握住相机的手靠在稳定的物体上，如墙壁，桌子等。或者用三根棍子用手握在一起，形成一个简易三脚架，然后再用手把相机和棍子把在一起，然后拍摄。

3 后期处理问题： 这个比较难说清楚，您用您相机的最大分辨率，最小压缩率的模式拍摄，然后您可以把原照片发到我的电子邮箱里，我帮您处理。
  我的E-mail： maassaass@163.com

3ax31e

哈兄真是热心人！我要一份没处理的照片 嘿嘿
3ax31e@163.com

3ax31e

鼓励楼主啊！为人民服务的大好人！
还是扫描的清楚 可以慢慢来 不要耽误工作啊
咱们草总应该支持一下 建议把图片尺寸放大到300K

MRF247

中间上方绿色的晶体16点几兆下面应该还有个3357或3361的IC ,再上面的中周是个455KHZ的解调中周,它的右边黑方框是455滤波器,其他看似中周的线圈中心频率大致都在46~49MHz.供参考.

60年代的爱好者

关于图片尺寸，如果是黑白图纸，建议用图形软件处理一下，把颜色设置为黑白，然后另存为GIF文件，一个几百K的JPG文件就变成几十K的GIF文件，而尺寸和清晰度不变。

杰胜

谁有熊猫1501侧面的喇叭罩图片，求！

白居不易

国产电子管收音机带调频的极少，只有春雷101符合现在调频波段。

校园风

杰胜 发表于 2014-7-21 11:48
谁有熊猫1501侧面的喇叭罩图片，求！

同求

Gastovski

为神马我看见的是一堆乱码？！