I was in Sam's Club yesterday and noticed that their GE CF bulbs have a
warning against using them close to emergency communications equipment.
A frequency range was mentioned: the upper limit was 30MHz, but I don't
recall the lower limit.
On 10/31/07 10:26 am Phil Camera wrote:
> My experience is as follows:
> I've replaced a number a incandescent bulbs in the house and especially in
> and near the radio shack and have not had a problem. Those bulbs are the 8
> to a pack GE styles from Sams Club.
> Now, I've done the same with the same bulbs on the two outdoor lights with
> photoeyes. On older photoeye units, these bulbs just burned out within a
> week or so (they are specifically not rated for photoeyes or dimmers). This
> past summer I replaced these two outdoor fixtures with new that had a
> different type of photoeye (replacement was due to old fixture starting to
> look beat up). I again tried these same CF bulbs and they have lasted for a
> long time......but
> The new problem I experienced is that when these came on and stayed on, RFI
> wiped out the AM radio (and most likely up into the amateur bands).
> I did an internet search and only found CF bulbs specifically rated for use
> with dimmers (none stated for use with photoeyes but I thought the issues
> were the same). I bought a few of these dimmer rated CFs and installed these
> and no more RFI. Gone.
> So if you are having interference issues with CFs; you may wish to try
> obtaining dimmer rated CFs and gives those a try.
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