> To: amps@contesting.com
> From: lars.harlin@pocab.se (Lars Harlin)
> Subject: [AMPS] Parasitic suppressors
To: <amps@contesting.com>
> Date: Sun, 31 Aug 97 05:20:18 +0000
> Have followed the discussions abt VHF parasitics on the reflector and other
> Media.
> Has anyone tried using ferrit in a suppressor? Maybe core-saturation would
> be a problem??
>
> Lars / SM3BDZ
The problem is the change from a pure reactance to dominant
resistance takes place too slowly Lars.
It might work if the parasitic was very widely separated from the
operating frequency, such as in a tube that oscillates at VHF
used in a circuit designed to operate at audio.
I've been unsuccessful using ferrites with common tubes at HF, sharply
resonant suppressor actually work best. Ferrites are used to de-Q
cavity tank systems, and actually built into some tubes.
73, Tom W8JI
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