[Elecraft] OT looking for a part number for a....

[Don Wilhelm]

I would also suggest that the Caddock 50 ohm 915 series power film 
resistors be considered.
Although these are rated at 15 watts with a heatsink, they are rated for 
1.25 watts in free air.
Mounted to the BNC connector with zero length leads, they should be good 
up to 500 MHz.
See http://www.caddock.com/Online_catalog/Mrktg_Lit/MP9000_Series.pdf

I use the higher power ratings (on a heatsink) for dummy loads, and they 
can be considered 'precision dummy loads' with a 1% tolerance and the 
top frequency depends on the lead length and other mounting 
considerations.  150 MHz is practical with little consideration for lead 
length.

Warning - do not exceed the power ratings or they will 'let the smoke 
out' quickly.

73,
Don W3FPR

On 9/13/2014 7:17 PM, Mel Farrer via Elecraft wrote:
> Hi Jeff,
>
> Depending on the connector used, and the frequency of interest, I found the Caddock 1/4 W precision film resistors to be good to about 300 MHz,  Try, RN55D49R9F.  (49.9 ohm 1%) .  Allied carries them.
>
> Mel, K6KBE
>
>
>
> On Saturday, September 13, 2014 12:49 PM, Jeff Herr <herr42 at comcast.net> wrote:
>   
>
>
> ....50 ohm non reactive 1/4 watt axial lead resistor maybe 1% or better.
>
> I have a couple of old amphenol bnc 240 ohm terminators that I want to
> repurpose to 50 ohm.
>
> I am having trouble finding a non reactive part thats good up thru 500mhz.
>
>
>
> Jeff Herr,  WW6L
> 4636 Kelton Way
> Sacramento, Ca 95838
> 916.925.6089
>
>
>
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