Don't forget that the HX and HY series signal samplers are directional, which means that the forward and reverse responses can be asymmetrical- depending upon the position of the loop. In many cases, the capacitive coupling method of the HZ series is superior for applications calling for an iso-tee device. Choose wisely.
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo Sent: Saturday, July 12, 2008 8:15 PM To: [email protected] Subject: RE: [Repeater-Builder] Measuring Desense > The one I use looks exactly like the one shown, but mine has > a small disk at the end of the adjustable BNC probe. > 73 - Jim W5ZIT The picture in the PDF is for a different model that uses a grounded loop (HX or HY series), not the capacitively-coupled (electrostatic) HZ series like the ones Ridge sells and the ones you and I have. On the capacitive ones, you can't short to the thru-line no matter how far you run the coupled section in because the center conductor on the coupled leg is recessed in from the end of the teflon. --- Jeff WN3A
