On Fri, Dec 6, 2013 at 1:52 AM, Tom Knox <act...@hotmail.com> wrote: > > > Amazing how reasonable some of these Chinese cables and other electronics > are. The quality is also constantly improving. But I would see if they can > use at least RG/142. It is more expensive but I would not recommend RG/58 > for a GPS antenna. Or even for distributing 5 and 10 MHz outputs if you are > going for maximum performance. >
I prefer RG-400 (teflon dielectric) myself but, yes, double shielded, silver plated braid RG-142 is good. At 40GHz bandwidth the 2.4mm connectors require precision machining. In > addition the cable will need to act as a waveguide beyond about 30Ghz. > Needless to say they will always command some serious money. If you are > going to that expense I would recommend 2.4mm to 2.4mm with a 2.4mm to > 3.5mm adpater. An SMA connector will limit the cable to use below 20GHz. > Skip at RDR has had some new surplus 2.4mm cables recently. He may still > have some longer lengths. They are not $6, but they were reasonably priced > and very nice. > I guess I'm a lo-fer then. I don't have anything that operates above 15GHz. The amazing thing is that I once thought that 1GHz was the next step below light. :-) -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive Spring Branch, TX 78070 br...@lloyd.com +1.916.877.5067 _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
