I use RG302/U for 75 ohm chokes.
John KK9A
Jim Brown K9YC wrote:
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.
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