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1. LF: Re: Noise R75 - rs232 from smpsu - (score: 1): Author: "Alan Melia" <[email protected]>; Date: Fri, 23 Jul 2010 23:14:32 +0100; Hi Laurence from memory ....I dont use laptops so didnt need do it.....the easiest way of "decoupling" the serial comms loops, is a pair of opto couplers on the RS-232 there are app notes in the data; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00300.html (12,782 bytes)
2. LF: Re: Noise R75 - rs232 from smpsu - (score: 1): Author: "Dave Sergeant" <[email protected]>; Date: Wed, 04 Aug 2010 11:29:31 +0100; I have an interesting example of this with my PC and router. Initially when I set assembled my new PC a couple of years ago I found terrible hash from its psu on 80m and 40m. This was traced to the i; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00507.html (10,801 bytes)

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