This has been an interesting thread. I purchased some 1/4" FSJ with BNC connectors from the usual auction site years ago for time nuts use but never installed it. It does seem to be a bit of a hassle to use in my time lab (I do use some FSJ with N connectors in parts of my home amateur radio station.)
I suspect I haven't looked hard enough for troubling leakage at 10 MHz from the RG400 I mostly use. I have the FSJ to fall back on if I take my time nuts hobby to the next level. Some of the fiber ideas seem promising as well. Mark Spencer [email protected] 604 762 4099 > On Aug 29, 2021, at 10:29 AM, Robert DiRosario <[email protected]> wrote: > > Andrew Sureflex (FSJ) is a lot more flexible then the LDF4 Healix, which is > what you find a > lot of on ebay and at hamfests. > > Here is some 1/4" Sureflex, new: > > Andrew Type N Male to Type N Male Sureflex Cable 30 feet F1RNA-PNMNM-30-L1 > NEW! > https://www.ebay.com/itm/173863049072 > US $30.00 + $13.02 Shipping. For two pieces shipping goes to $16.33, for > three $22.90 > > You can cut it with a hacksaw, do NOT use wire cutters. Connectors can be > installed with just hand tools. > > If you move the test equipment around it's not very practical, but if it's > setup on > a bench or in a rack it will work. > > Robert > > > >> On 08/29/2021 09:51 AM, Bob kb8tq wrote: >> Hi >> >> Skin depth is what gets you with most coax at 10 MHz, even with the “double >> shield” stuff. Hardline with a nice heavy outer would do better. It’s not >> terribly >> practical around the typical lab. Might not be a bad choice for a “burry in >> the yard” >> setup though. With normal cable, the losses from the soil at normal burial >> depths make a good shield, that makes dealing with it questionable even >> there …. >> >> Bob >> >>> On Aug 29, 2021, at 9:36 AM, Robert DiRosario <[email protected]> wrote: >>> >>> What about double shielded RG-223, or Thinnet ethernet cable? >>> Most Thinnet has both a braided shield and a foil wrap. >>> >>> Robert >>> >>>> On 08/28/2021 08:26 PM, Bob kb8tq wrote: >>>> Hi >>>> >>>> Anything you do that has a bunch of 10 MHz cables running out from here or >>>> there >>>> will impact your ability to listen to WWV at 10 MHz :) Other than killing >>>> all the sources, >>>> there is no silver bullet. >>>> >>>> Bob >>>> >>>>> On Aug 28, 2021, at 7:57 PM, Dana Whitlow <[email protected]> wrote: >>>>> >>>>> Bob, my own motivation for going to fiber was entirely different. I >>>>> simply wanted to >>>>> run 10 MHz all over the place from reference sources in disparate >>>>> locations in the >>>>> house, and I quickly discovered that cable leakage was embarrassingly >>>>> severe. So >>>>> I shut down and began contemplating a fiber link. But then reality set in >>>>> and I realized >>>>> that running fiber across the house had its own big problems, so I set the >>>>> project aside. >>>>> >>>>> Dana >>>>> >>>>> >>>>> On Sat, Aug 28, 2021 at 3:3 _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
