[WriteLog] Re: lpt

2002年6月10日 06:48:27 +0900

Hi, Steve and all:
Steve Baron - KB3MM wrote:
>MAybe some other thing going on e.g. the RFI, etc.

I attached some ferrite cores to cables (to monitor, keyborad and mouse) 
for RFI and I made a Keying interface with a photo coupler. With this 
interface I tried lpt keying when I run writelog, but not succeeded. 
Then I found that the output level from my Keying interface is not enough 
to drive keying circuits of my rigs. So I replaced a photo coupler with 
a transistor and tried again. Then the level is higher, but not enough 
either. 
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Katsuyuki Ishii kkii@hcc1.bai.ne.jp