It all depends upon the manufacturing process, some are spiral deposited
from reports. I havent dug any deeper.
Ive been using the Xicon 5W MOX since the early 90's.
Carl
KM1H
----- Original Message -----
From: "Steve Thompson" <g8gsq@f2s.com>
To: <amps@contesting.com>
Cc: "Steve Thompson" <g8gsq@f2s.com>
Sent: Sunday, March 14, 2010 6:07 AM
Subject: Re: [Amps] 100 Ohm 2W
Are any brands or families particularly bad?
Including a tiny bit of lead length, a variety I have here all
have around a couple of ohms of reactance at 30MHz - about 10nH.
Some bigger ones, 5W rating have higher inductance, about 40nH.
Steve
Carl wrote:
>
> As long as they arent a problem at 10M from inductance. Not all MOX are
> created equal.
>
> Going back to the discusssions of the 90's I prefer 5W MOX with a couple
> of caps to cancel the XL.
> A gentleman from Ameritron wound up using that concept...............
>
> Carl
> KM1H
>
>
>
> For the few pennies they cost, it's worth thinking about getting
> 3W metal oxide resistors. They withstand overload and high
> operating temperatures much better than carbon. To be fair to
> Rich, that's one thing he did get right.
>
> Steve
>
>> I have been reading the mail and have a question. If 100ohm 2W are
>> hard to
>> come by, how about two 200 2w in parallel. I have a source of NOS
>> 200ohm 2w
>> carbons.
>
>> Rich , KDØZZ
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>
>
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