Reg Edwards wrote:
Cec, you forgot to say sci.physics.electromag were working at 500 MHz
and above.

Not true, Reg. My question was specified using RG-213 at 10 MHz.
--
73, Cecil http://www.qsl.net/w5dxp

On Tue, 11 Oct 2005 21:15:22 GMT, Cecil Moore wrote:


Not true, Reg. My question was specified using RG-213 at 10 MHz.

True enough, but in the context of the question as to whether the Bird
43 reads sufficiently accurately, the transmission line on which one
is interested in the decay of the evanescent modes is the Bird
Thruline coupler section, not Rg-213 or any other cable that might be
attached to the Bird.

Owen
--

Owen Duffy wrote:
Cecil Moore wrote:
Not true, Reg. My question was specified using RG-213 at 10 MHz.

True enough, but in the context of the question as to whether the Bird
43 reads sufficiently accurately, the transmission line on which one
is interested in the decay of the evanescent modes is the Bird
Thruline coupler section, not Rg-213 or any other cable that might be
attached to the Bird.

I didn't read it that way, Owen. IMO, the real question is:
What length of 50 ohm coax needs to be attached to the Bird
input and output to ensure that a 50 ohm environment is
present?
--
73, Cecil http://www.qsl.net/w5dxp

On Wed, 12 Oct 2005 02:03:10 GMT, Cecil Moore wrote:
What length of 50 ohm coax needs to be attached to the Bird
input and output to ensure that a 50 ohm environment is
present?
None.