[Hallicrafters] SX-28: Fast HT rise - long term stress on thereceiver's tubes?

[Todd, KA1KAQ]

On Sun, Sep 12, 2010 at 10:38 AM, Richard Knoppow
<1oldlens1 at ix.netcom.com> wrote:
> Actually, I am not sure if
> indirectly heated cathodes suffer from this as much as
> thoriated tungsten types found in transmitting tubes do.

They don't. It sounds more like it could be related to an elevated
line voltage issue or other issue. It's also one of the drawbacks to
solid-stating a tube power supply, thereby slamming the HV to the rig
immediately on power up rather than gradually with tube warm up.

~ Todd,  KA1KAQ/4