Gz－１－A中波广播发射机，一般都是六、七十年代的产品，在低周调幅器电路上没有采用外反馈，在元器件结构上，低前级音频变压器没有屏蔽，调整低末阴极平衡电阻和负偏压电阻均使用RXYC型可变线绕电阻，因为该电阻采用移动抱箍滑动接点，在调整指标时，不仅操作上感到十分不方 Gz-1-A medium-wave radio transmitter, are generally sixties and seventies products, the low-frequency modulator circuit without external feedback, the structure of the components, the low-level audio transformer is not shielded, low adjustment The end of the cathode balance resistance and negative bias resistors are used RXYC-type variable wirewound resistors, because the resistance of the mobile hoop sliding contact, in the adjustment of the index, not only the operation felt very wrong