[RFI] Common mode choke on 4 Square feedlines without skewing phasing?

[Jim Brown]

Thanks Grant. In a quick search, I found RG179 on Pasternak's website, 
but didn't see a relevant power rating at HF.  Looking at Belden's 
datasheet, VF is 0.695, so a bit more shortening of the feedline will be 
required as compared to LMR200-75.

73, Jim K9YC

On 1/23/2019 4:48 PM, Grant Saviers wrote:
> Another coax choice for 75 ohms is RG179, TFE + SCCS conductor + 
> silver shield.  Slightly less diameter than RG400.  I've not had SCCS 
> creep problems in dozens of QRO chokes I've made with 50 ohm SCCS 
> RG142, but if buying new 50 ohm cable the stranded RG400 is the better 
> choice. Belden says 1250 watts at 50MHz for the 75 ohm RG179, so for a 
> 160m or 80m 4 sq probably has lots of headroom. 179 is available on ebay.