You can get custom-made decent quality cables with double shielded coax
(either RG-316D or RG-142) from China (where else?) for pretty low
prices. I am sure the cable isn't mil-spec but I cut a piece open and
the shield coverage, which is the main thing I worry about at HF
frequencies, is pretty good. The connector finish is sometimes a bit
rough (particularly the BNC bayonet part) but they hold up pretty well
and I haven't seen any damage from mating them.
The place I mainly work with is "RF Bat" or "SuperBat" at rfbat.com.
Ask for Amy and tell her I sent you. :-) (no commercial relationship, etc.)
John
----
On 1/16/21 12:40 PM, Brian Lloyd wrote:
On 1/16/21 04:32, Hal Murray wrote:
The 10 MHz is stronger near coax carrying 10 MHz and next to a
Z3801A. I'll
have to try some good cables. Anybody have a favorite source? Is
there a
magic word? Do I have to specify the type of coax?
Yes. RG400 or RG316. Do NOT use RG58 or RG174. Both RG400 and RG316 are
double-shielded to reduce leakage. The choice is dictated by length of
run and physical flexibility required. Mostly I use RG316 cables on the
bench. For more than a meter or so I go with RG400. You can get either
type of cable terminated with N, BNC, TNC, or SMA connectors.
All kinds of pre-made cable assemblies using RG316 are available from
Amazon for surprisingly-low prices. I can't buy the coax and connectors
for what I end up paying Amazon for completed cables. For RG400 I end up
making my own cable assemblies.
The LMR cables (Times Microwave and knock-offs) are pretty good too.
LMR195 is pretty good but not nearly as flexible as the aforementioned
cables. LMR400 is just too big and inflexible for easy use on the bench.
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