[Elecraft] (no subject)

[Tom Hammond]

Man folks, you took the words right out of my mouth... I've been doing a 
little research on this very thing for economical dummyloads.

I've been considering two (2) of the 100 Ohm 35W thick film resistors in 
parallel.

My one concern has been the accuracy of the resistance however. If I 
recall, the specs rate than at 5%, which shouldn't be at all bad. And if I 
parallel two, I may have a better chance of 'swamping' (averaging) out any 
single-device error.

If someone beats me to the punch, PLEASE post your results to the 
reflector... this loots to be such an easy AND ECONOMICAL project that no 
one (and YOU KNOW WHO YOU ARE - <G>) could grouse about not being able to 
afford a dummyload for their K2, and for their K2/100 for that matter (at 
least for short periods of time.

Let's go fer it, guys... it looks to be too good to pass up.

73,

Tom  N0SS

Don Wilhelm wrote:
>That does look a good candidate for some dummy loads.  Ohmite does not state
>the RF resistance, nor what can be expected at high frequencies.
>
>The Ohmite number is TCH35P100RJ for the 100 ohm TO220 package and
>TCH35P51R0J for the 51 ohm.
>
>Mouser's numbers are 588-TCH35P-100 (100 ohm) and 588-TCH35P-51 (51 ohm)
>
>I did notice on the ohmite website, that the power rating is valid if the
>case temperature is kept at 25 deg C. or less.
>
>At higher temperatures, the wattage rating must be reduced. - but then, that
>is what the heat sink is for!!!  Just a note to size it adequately for the
>power you are expecting to put into it.