[ARC5] Bypass Cap Question

Kenneth G. Gordon kgordon2006 at frontier.com
Mon Nov 25 12:21:07 EST 2013


On 24 Nov 2013 at 23:01, Mark K3MSB wrote:

> It was suggested to me that I bypass all the power leads with a 0.01
> uF cap.

Yes.

> So, what's the point in adding the 0.01 uF caps to each of the power
> leads,

As several have explained, electrolytics make HORRIBLE bypasses at 
RF...and even at high AF. As far as RF is concerned, electrolytics aren't 
even there.

In fact, I have seen the necessity at VHF to parallel two different kinds of 
capacitors to get proper bypassing. Although your rig is operating at much 
lower frequency, you still need the 0.01 mfd ceramics.

Ken W7EKB


More information about the ARC5 mailing list