[Elecraft] BNC 5W Dummy Load

[Vic Rosenthal]

Fernando Quinones wrote:

> Recently read about someone's adventure with a BNC termination unit.
> This here is what I used and works great, even with my QRO Jupiter with 
> nil effect.
> <http://pages.sbcglobal.net/nf6q/k2dummyload.html>

A couple of questions and a comment:

1) The picture is captioned "5w BNC with ..."  Do you have an ethernet 
terminator that is rated for 5w, or are you saying that it can handle 5w 
when it's heatsinked by the oil.  I have a bunch of BNC ethernet 
terminators, but they appear to be able to handle only a watt or less in 
air.

2) Is the purpose of the extensions to get the terminator into the 
middle of the jar so it will be surrounded by oil, or is there another 
reason?

3) Comment:  I'm surprised that the thermal conductivity of the small 
interface between the terminator and the oil is good enough to allow you 
to use it with your Jupiter!

This is a great idea if it is really practical, because the terminators 
are very good (low-reactance) dummy loads!  If I make one, however, it 
will be in a metal can.

Vic K2VCO