In a message dated 7/2/2003 4:03:23 AM Eastern Standard Time, sire@iinet.net.au
writes:
> 1. Its (typical) velocity factor (have you every tried asking a TV cable
> supplier what the velocity factor of a particular TV cable is?...)
The celluar polyethylene dielectric stuff is normally 78%. If you have the
type similar to Belden 8215 (double shielded polyethylene dielectric) the VF is
66%. This is according to the Belden Catalog.
> 2. What sort of power it can typically handle (the cable
> may have to handle
> something of a mismatch).
Since it is roughly the same size as RG-8/RG-213, it should have about the same
power handling capabilities as RG-8. In the broadcast industry for a temporary
test transmitter set-up to make field strength measurements, we have put 3KW
into RG-8 WITH A GOOD MATCH. The stuff gets a bit warm but will handle the
power, again I stress with a good match. If there is a mismatch the maximum
handling power is derated accordingly. But I see no reason that you can't use
it for your application at the full legal limit if you have a reasonably good
match.
Hope this helps.
73................de Goose, W8AV
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