Topband: Non-inductive resistors

i4jmy at iol.it i4jmy at iol.it
Thu Dec 18 22:16:33 EST 2003


Anything has inducvtance/reactance, and a small inductive reactance is not affecting the beverage at all.
Standard film resistors, few turns of resistive metal film compound laying on a very small diameter ,have a small reactance at 2 MHz. 
Some 5x 2W 2200 Ohm in parallel (1/5 also the original inductance) already make a practical and easy, and effective 440 Ohm 10W termination, whose SWR is neglectable at 2 MHz.

73,
Mauri I4JMY

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>From      : topband-bounces at contesting.com
To          : topband at contesting.com
Cc          : 
Date      : Thu, 18 Dec 2003 09:52:46 -0700
Subject : Topband: Non-inductive resistors

> Folks,
> can anyone recommend a source for relatively inexpensive non-inductive resistors.  I have exhausted my supply.  I need  ~ 6 or so resistors in the  450-500 ohm range (1 watt or better) for my beverages.  They are hard to single source and very expensive even in lots.  In addition, many  manufacturers say they are non-inductive but that is not necessarily true at 1.8 MHz.    Carbon composition seem to be the only non-inductive resistors at 2 MHz.  
> 
> Thanks in advance
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