[Amps] Cool Amp Silver Plating Powder

[John Lyles]

Correction to what I posted.... I use 0.0006" thick electroplated silver 
for 200 MHz cavity circuits, running about 2000 amperes RMS circulating 
current. My finger slipped a digit. 0.006 would be a ridiculously 
expensive amount of silver plating.
K5PRO


On 3/2/14 10:00 AM, amps-request at contesting.com wrote:
> Message: 6
> Date: Sat, 01 Mar 2014 13:57:44 -0700
> From: John Lyles<jtml at losalamos.com>
> To:amps at contesting.com
> Subject: [Amps] Cool Amp Silver Plating
> Message-ID:<531249C8.2060809 at losalamos.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> We use it often at work. It's expensive. It doesn't do squat for
> improving the conductivity of surfaces like cavities and inductors for
> RF current, as Peter pointed out. That requires at least 3 to 5 times
> the skin depth which is less than 0.001" at 2 meters. At 200 MHz, where
> I have been working for the past 5 years on cavity HPAs, I use 0.006"
> of electroplated silver with very good success.