新的801hp3好像程都是3，如30w,300w和3kw满刻度。另外是n头的。
附件是801hp原版本的图纸，大量程有额外的二极管校正刻度，以便公用一条小功率的刻度。
在eham上对这个表的电路有以下几点zl3ag认为要改：
when i investigated the circuit, found that the peak hold timing was acheived with a 220uf electrolytic with 2k ohms accross it. considering the limited current delivery of a 358 op-amp, the 220uf was never going to charge successfully with syllabic-rate dc drive. i replaced the 220uf with a low leakage 0.47uf capacitor and the 2k with 3megohm. recalibrated and now marvellous. nothing wrong with my linear.
