On Sat, 06 Feb 2010 09:07:25 -0800, Fred Abse
wrote:

On Thu, 04 Feb 2010 11:44:01 -0600, The Phantom wrote:

On Thu, 04 Feb 2010 00:46:55 -0800, Fred Abse
wrote:

On Fri, 29 Jan 2010 00:08:01 -0600, The Phantom wrote:

I measured the frequency response with a 750 MHz sweep. The input signal
was applied with a short length of 50 ohm coax, with a 50 ohm feed through
termination at the input BNC connector; the scope probe was not used.

Most of the commercial 50 ohm through terminations I've measured are
pretty useless as low as 500MHz.

The one I used is behaving properly at 750 MHz. It came from Pasternack, and
their claim was: VSWR: 1.2:1 MAXIMUM, DC TO 1 GHz

How have you measured it? Network analyzer?

I wish. Nothing so fancy. I used an HP8657B signal generator, followed by a
sensitive military surplus SWR meter. Both instruments I use mostly for amateur
radio meaurements. The terminator SWR was less than 1.1:1 by this method.