[SECC] New Beverage at W8FN

[Hal Kennedy]

Been using an Astron RS-7 linear supply as the "House power" 12 supply for
40 years.  The way to go...
N4GG

On Sun, Dec 6, 2020 at 9:49 PM Randy Farmer <w8fn at windstream.net> wrote:

> I'm also uncomfortable with using another switcher. It just happened
> that's what I had on hand for a quick fix, and it was an improvement. I
> plan to order a small linear supply this week to fix the problem for good.
> The old unit was the only remaining SMPS in the station. Soon there will be
> none, and I'll be happier.
>
> 73...
> Randy, W8FN
>
> On 12/6/2020 4:54 PM, Bill Coleman wrote:
>
> I have three Samlex SEC-1223 power supplies, and I’ve had to modify each one to be less noisy. I’m surprised you don’t have a problem with the SEC-1235.
>
> I’ve modified all three units:
>
> 1) FT50-77 toroids on the AC lines from jack to board.
> 2) Ferrite beads from the board to the power jack.
> 3) Bypass caps across the power output
> 4) Grounding case to the station ground
>
> Without it, there were a lot of strong birdies on 160m.
>
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