Hello Bob.

18 Jul 04 11:00, you wrote to John Tserkezis:

 JT>> The following is from the back of an old DSE cattledog, though
 JT>> only part of  the list.  I've picked the two more common cable
 JT>> types.  Ask if there are other  cables types you're interested in,
 JT>> there are about 15 different types listed,  some 50 ohm, some 75
 JT>> ohm, some 93 ohm.

 JT>> Attenuation in dB/100metres
 JT>> Type                50MHz  100MHz  200MHz  400MHz     Velocity
 JT>> RG-58C/U    50ohm     10.8   16.1    23.9    37.7     66%

 BL>  Losses are roughly half the 50 MHz figure at 10MHz, where they
 BL> level off to simply resistance losses.

hmm. it's starting to sound more and more like DC...

but that could be the hammer syndrome - I understand DC :)

All else is manipulationg symbols I don't fully understand.

Jasen

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