On Tue, 25 Jan 2005 21:34:44 GMT, "Highland Ham"
wrote:

Should a dual band open stub j pole like the one arrow makes be
grounded or not? Seems like someone told me no j polls should be
grounded according to their nec program. The website says it can be
grounded or not.
If it should not, then how do you protect from lightening?
=============================================== ==
Earthing any antenna does not protect against a lightning strike.
The best way to protect equipment attached to any antenna is to disconnect
the feeder near the radio equipment , keeping the feeder metal connections
away from any other metal.

When I go away from home expecting 'static' activity and lightning ,I always
disconnect the antenna feeders and 'park' the connectors inside a plastic
box

However ,earthing an antenna does help preventing static charge build-up .
Hence following a feeder disconnect ,before reconnecting it to radio
equipment , I briefly 'touch' the feeder connection(s) to earth.
My double ZEPP or Doublet wire dipole with balanced ribbon feeder has 2 ea
composite 47 kOhms resistor at the matching unit (tuner if you wish)
connected to chassis/earth.

Frank GM0CSZ / KN6WH



You don't put the end of the cable in a pickle jar filled with water?

73
Gary K4FMX

Gary Schafer wrote:

You don't put the end of the cable in a pickle jar filled with water?

Totally ineffective. The proper way earth your cable is into the nearest
available plant-pot.

People did this in the days of Mr Marconi and aspidistra plants, so it
must be all right... maybe you'd better talk to the plant first, to make
sure the pot is filled with genuine earth.


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Ian White, G3SEK wrote:
Gary Schafer wrote:


You don't put the end of the cable in a pickle jar filled with water?

Totally ineffective. The proper way earth your cable is into the nearest
available plant-pot.

People did this in the days of Mr Marconi and aspidistra plants, so it
must be all right... maybe you'd better talk to the plant first, to make
sure the pot is filled with genuine earth.

I've heard of using an "artificial ground". Is this where you fill the
pot with vermiculite or styrofoam?

Roy Lewallen, W7EL

Roy Lewallen wrote:
Ian White, G3SEK wrote:
Gary Schafer wrote:


You don't put the end of the cable in a pickle jar filled with water?

Totally ineffective. The proper way earth your cable is into the
nearest available plant-pot.
People did this in the days of Mr Marconi and aspidistra plants, so
it must be all right... maybe you'd better talk to the plant first, to
make sure the pot is filled with genuine earth.

I've heard of using an "artificial ground". Is this where you fill the
pot with vermiculite or styrofoam?

Exactly. You're really getting the hang of it now.


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek