[Antennas] re: building a dummy load

Fri, 8 Aug 2003 21:33:26 -0400

You can..

two problems

1)  The impedance of a light bulb changes as its filament heats up...
2)   It WILL radiate RF.

You can buy a porcelain ceiling socket, mount it on a board, and install a
100W bulb.  Make up a length of coax with an rf connector to match the radio
on one end.  For the other end,  just screw the coax shield to one terminal
and the center conductor to the other terminal in the fixture/.

Again. it's not a very good dummy load due to the varying impedance .. and
IT WILL RADIATE RF ... something a dummy load is supposed to keep contained
in its shielded case.
================
73, Frank
 ._._.

----- Original Message -----
From: "Hart Engel" <[email protected]>
To: <[email protected]>
Sent: Friday, August 08, 2003 9:03 PM
Subject: [Antennas] re: building a dummy load

> Someone has told me that I can build a dummy load using a 100-300w light
> bulb. Is this true?
>

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