[bars] Avoiding EMI hazards for PC located near rig and sharing common AC line

[Dan Trainor]

Hello Allan,  Just a Suggestion to start off. Focus on your Grounding and Bonding system first. It is the key.  If you can, drive 1 or 2 8ft ground rods into ground outside your shack and run a flat copper strap from a ground rod to a single point bonding point (bus bar) in your shack.  Connect transceiver, power supply and any other equipment to this single point ground. Heavy Copper Bus Bar. Use 1-2 inch braided flat strapping, rather then wire for bonding connections.  Single point avoids ground loops.  Also, you do not yet know if you’re getting RF into AC 120v lines, so I would wait ti see, but if it is a problem you can use a robust industrial  Power Strip that has RFI filtering build inside. First prevention and/or mitigation step for RF in the shack is good Ground and Bonding.  Other steps follow such as filtering, suppressing with Ferrite on particular cables, if needed, but focus on Grounding and Bonding first. Good reference is Grounding and Bonding book from ARRL. 

> On Jun 23, 2023, at 12:03 AM, Allan Chertok <achertok at magnecon.com> wrote:
> 
> I plan to set up my ancient Atlas 350XL or smaller 210X transceiver in my home office and am concerned that conducted or radiated EMI might fry a nearby (e.g., 3 feet) laptop or smartphone.  The transceiver chassis will be grounded to a near by cold water pipe with an 8 foot run of  #6.  I think I should install an RF filter in the Atlas power supply 120 input and another in the laptop power dongle 120 input.   A more aggressive barrier to conducted EMI might be to run the transceiver and laptop off a 12V battery which would also support operation during a power outage. The charger could be disconnected when the transceiver is OTA.
> 
> Any suggestions will be very much appreciated...especially links to available 120 line filters.
> 
> Regards,
> Allan (new member)
> KD1DH
> Bedford MA
> 
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