Topband: F connector how-to video

[Jim Brown]

On 2/4/2022 2:03 PM, Richard (Rick) Karlquist wrote:
> Before falling in love with a cable, it is worthwhile to check its 
> impedance accuracy vs frequency and its low frequency loss and the 
> consistency of its velocity factor.

For at least 20 years, I've been using nothing but double- or 
quad-shield Commscope RG6, and for about ten years, the flooded stuff 
that DX Engineering sells. Among other things, it's a joy to pull 
through the woods (and would also be in conduit), and the critters seem 
to not like the goo. I've measured most of the coax I've bought, and 
find it to be very good quality. From ZPlots, at VHF, Zo = 75.5 ohms, VF 
= 0.8414. At 2 MHz, 0.458 dB/100 ft, Zo is 77.9 ohms, VF = 0.834.

73, Jim K9YC