Peter Laws wrote:
> On Fri, Mar 19, 2010 at 00:46, Roger (K8RI) <email@example.com> wrote:
>> But getting back on track, I'd never noticed noise from those big lights
>> before, but this was a 20 over 9 plus crash and it happened every time
>> the light flashed and that is just from one tube. All of the wiring is
>> in EMT and well shielded. The building interior is bonded barn metal
>> finished in a baked on glossy white so lighting out there is very
>> efficient as is the shielding. I have to stand in front of a window just
> Isn't this just the ballast or whatever they call the starter circuit?
> Isn't that pretty common with T8 installations?
Probably, darned if I know. I've never heard them start and this is the
first one I've heard fail. OTOH it's so quick that I might never have
noticed it before, but that crash is louder than anything on the band.
The tubes start flickering when they are about to fail, but I hear no
noise from that either. I've only had to replace one ballast in the
last 10 years. (Actually I replaced the fixture as that was cheaper
than purchasing just the ballast)
I usually leave the rig on either 50.125, or 7.155 (+/-) while working
out there. That way I catch the 6-meter band openings in the day or
early evening, or lots of DX on 40.
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