[Elecraft] Elecraft Digest, Vol 236, Issue 2

[Bob McGraw]

There are many very nice, well filtered, well regulated power supplies 
on the market.  I see NO REASON for using anything other than the 
station power supply to power all accessories.    As to plant lights, 
use a separate power supply and not the piece of junk supplied with them.

I have and use two switch mode supplies for all of my station 
equipment.  That encompasses two 100 watt transceivers an a 150 watt VHF 
amp.   From 160M - 2M I have ZERO noise from either or from both of 
these supplies.   Frequently I am running two radios on 2 different 
bands at the same time.

Jim, K9YC, has very strong merits in that each and every piece of 
equipment MUST be bonded to a single common point.   I use the station 
power supply for my single common bonding  point.  I DO NOT use an 
external dedicated ground as it would be 35 ft in length and serve as an 
antenna to pick up noise.  After all, that is 1/4 wavelength on 40M.

As to what's in the neighborhood, that's another issue out of my control.

73

Bob, K4TAX

On 12/3/2023 9:52 AM, elecraft-request at mailman.qth.net wrote:
> Message: 14
> Date: Sun, 3 Dec 2023 05:19:39 +0000
> From: Bill Johnson<k9yeq at live.com>
> To:"jim at audiosystemsgroup.com"  <jim at audiosystemsgroup.com>,
> 	"elecraft at mailman.qth.net"  <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] Noise from KAT500?
> Message-ID:
> 	<SA3PR19MB73212793DCE6D7433D8BAF659C87A at SA3PR19MB7321.namprd19.prod.outlook.com>
> 	
> Content-Type: text/plain; charset="us-ascii"
>
> It gets worse with all the new gadgets and LED lighting.  I just
> installed new plant lights, LEDs, and the racket from the wall warts is
> terrible.  I shut them off when operating, or not interested in lighting
>   up the plants.  Terrible view of the noise on K4 graphic display.
>
> Bill
> K9YEQ