Steel, being magnetic, is quite lossy at RF. OTOH, aluminum at RF is only 28% lossier than copper. However, no RG-6 (AFAIK) has a copper clad aluminum conductor.
Rick N6RK Jim Brown wrote: > On 1/23/2013 2:58 PM, [email protected] wrote: >> 1.8 0.3 0.6 350 >> 3.5 0.4 0.6 500 > > Yes, and you can see this difference in mfr data sheets that are > sufficiently detailed (Belden, for example). The differences are > greatest at the lowest frequencies. > > Note also that copper clad aluminum does not suffer nearly as much from > this, so I suspect it's the effect of the steel on the distribution of > current. For example, loss in LMR400 (Cu clad Al) is quite close to > solid Cu of the same diameter (Commscope 3227, #10 solid copper, same > shield as LMR400) on 160M. > > 73, Jim K9YC > _________________ > Topband Reflector > > _________________ Topband Reflector
