[TowerTalk] FW: Beverage Layout Problem

[Matt]

Hi Jim,

Do you have any experience or knowledge you can share about how well the
shielding performs or compares at HF for double & triple shielded RG-6 &
RG-11 cables?   These (Commscope brand) ) have 1 (DS) and 2 (TS) layers of
~7 mil foil tape with either 60% or 77% coverage braid.   Do the layers of
foil make up for the lower braid density?

Thanks for any info you can offer.

Matt
KM5VI



>> Many so-called RG6 and RG8-X cables have thin, poorly manufactured
shields, so their transfer impedance is high. The higher the transfer
impedance, the greater the transfer of noise. Another factor increasing
transfer impedance is poor uniformity of the shield.

>> That's why a good RG58 with a copper braid shield makes a reasonably good
coax for Beverages. It's also why it's a good idea to add a common mode
choke to that coax.