I use 5 Watt wire wound resistors of 0.1 and 0.22 Ohms and
series/parallel a heap of them up to get the desired resistance/power
dissipation level.
You gotta overkill on the power rating because you don't want them
getting hot and you often can't mount them in a cooling air stream.
73, Alek.
VK6APK
On 24/01/2015 7:17 AM, ki7m@comcast.net wrote:
This discussion of single and multi-tube amps has been interesting. I learned a whole lot
by finding www.somis.org (AG6K Richard Measures site including kits for suppressors on
various amps) and www.w8ji.com Charles T. Rauch Jr. sites (what a station!). I put one of
Rich's suppressor kits in my Dentron MLA-2500 "basket case" amp trying to
improve it. I'm not proud of my 'construction' technique (read the whole instructions
before starting) but I'm sure it helped. One of the things I wonder about is how you add
a resistor to the filament lead since it seems it is going to have to be about 0.2/0.4
ohms or so at high current. Maybe a wire but that can add inductance so I was never clear
on that. I suspect my Dentron could use that mod but I haven't done it yet.
Terry
KI7M
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From sunny Binningup, Western Australia.
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