Hi Tom,
On a 160 meter mail list there are hams who report using RG6 - 75 ohm TV cable - on that band in their DXing station at full legal power of 1500 watts (and maybe a little more) without issues. Just go ahead and use whatever you have. This if HF, not microwaves.
73,
Bill KU8H
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On 09/30/2018 04:59 AM, Tom, wb6b wrote:
I'm beginning to like SMA cables and connectors more and more. For my
short cable runs such as from transceiver to tuner or dummy load I use
short SMA cables and SMA to BNC, SO239/PL259 and F connector adaptors.
It is a great way to hook just about anything to anything. For things I
build, I now mostly use SMA. I'm thinking about replacing the two pin
antenna connector on the uBITX board with an SMA. Although for the short
length from the board to the current BNC connector, the individual wires
twisted together is probably just fine.
I live at a resort town and before I made a trip down the mountain and
bought some 50 ohm coax cables, I used 75 ohm (supposedly high grade)
coax cable available at the hardware store. It seemed to work well, but
I was making an adaptor by splicing the 75 ohm coax to a SMA cable
(before I received the SMA to F adaptors) and found the 75 ohm coax
cable has aluminum wire for the shield braid. The center conductor may
be copper clad steel. None-the-less it did work. For significantly
higher power transceivers the power handling capacity of the TV 75 ohm
coax (and the SMA cables) would be an issue.
Tom, wb6b
--
bark less - wag more
