[Hallicrafters] I bet you knew this already.

[Jim Larsen - AL7FS]

I am having trouble relating the discussion to the Subject.  How will I ever 
look up this info in the future...search on "I bet you knew this already?"

<sigh>

Jim
Jim Larsen
http://www.AL7FS.us/
Anchorage Alaska  (907)345-3190


Roger (K8RI) wrote:
> 
> 
> Jack Dunigan wrote:
>> My radio bench has one of those magnifying lights in which I put one 
>> of those curly, energy saver bulbs. It is bright, runs cool, and 
>> supposedly saves money. When I fire up my Hallicrafters S38-C and turn 
>> on the light, a terrible buzz obliterates all signals on the lower 
>> half of the broadcast band. From about 900 khz down absolutely nothing 
>> gets through. When I switch off the light, the radio works normally. 
>> You all probably knew this already, but I was preparing to tear down 
>> the radio, replace filters, change tubes, and the like. Glad I 
>> switched off the light. Then I discovered that the radio is affected 
>> the same way by another lamp in the room maybe 6 or 7 feet away with a 
>> tubular quartz bulb and a dimmer switch. Changing the dimmer changes 
>> the tone and intensity of the interference.
>>  
>> Is there an easy way to filter this out? Incandescent lamps in a 
>> ceiling fixture seem to have no effect at all.
> I have one on the bench with no problems, nor have I ever had any 
> interference problems from either CFLs or standard fluorescent lights.  
> OTOH I know many who have.  Also, dimmer switches are notorious for 
> creating hash.
> 
> 73
> 
> Roger (K8RI)
>>  
>> Jack
>>
>>
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