I use this calibration setup:
and for measuring the DUT:
Op wo 22 mrt 2023 om 15:50 schreef Doug <jdkearney@...>:
toggle quoted message
Show quoted text
One picture would be worth a thousand words.
Thanks, Doug, VA3DKA
On 22/03/2023 08:06, Donald S Brant Jr wrote:
On Tue, Mar 21, 2023 at 07:40 PM, Steve Johnson wrote:
@Donald, I don't understand this 180 degree positioning. Would that be
end-to-end? How much spacing (in mm) between them?
Yes, end to end at the end of your transmission line, the free ends
going to a ground plane surrounding the end of the line.
Think of a baseball diamond, the transmission line runs from home base
to the pitcher's mound; the resistors point from there to first and third
base, the grass is your ground.
I build them into the connector; I put them directly across the
connector with the resistors going from center conductor to ground. Make a
short by soldering a piece of shim stock across the connector, with a hole
to solder the center conductor. Use an open connector with the center
conductor cut flush for the open circuit.
73, Don N2VGU
--
*/If you forward this email, please delete the forwarding history which
also includes my email address. When sending emails, please BCC so as to
hide all addresses. Thanks for helping to prevent Scammers and Spammers
from mining addresses and spreading viruses./
73
Doug Kearney, VA3DKA
*
*Ottawa, ON *
--
This email has been checked for viruses by Avast antivirus software.
www.avast.com
