Home |
Search |
Today's Posts |
|
#1
![]() |
|||
|
|||
![]()
On Fri, 3 Jun 2005 18:01:05 -0400, "Walter Maxwell"
wrote: "Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken Sorry, Ken, knots are a no-no. DC can travel through them, but RF? Uhn Uh. The RF gets all tied up in them and doesn't know which way to go, so the power concentrates there and pulverizes both the wire and the insulation--the knot goes pooof! And down comes the dipole. How much did you say you paid for it? Reminds me of my youth. One of my earliest jobs was working in an automotive parts store. This was back when you actually had to know cars and how to read and look things up in paper catalogs and stuff like that. One test some of the oldtime mechanics would do on a new parts guy would be something like asking for a set of spark plugs for a Cummins diesel, a radiator cap for a Corvair or a pan gasket for a Powerglide transmission. I fess up... they got me on the last one. Ken, the only problem with the knot is that the wire will be weak at that point. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Imax ground plane question | CB | |||
Questions -?- Considering a 'small' Shortwave Listener's (SWLs) Antenna | Shortwave | |||
randome wire or MP-1 antenna with FT-980 | Antenna | |||
Two questions about random wire antennas | Shortwave | |||
What is it that makes auto radio get great reception | Shortwave |