[Amps] Cell phones, digital cameras and RF

[TexasRF at aol.com]

Hi All, if the phone/camera has issues with rf you have to wonder about  
long term effects on the operator. One would think that brain tissue is less  
robust than a cell phone.
 
Scary stuff!
 
73,
Gerald K5GW
 
 
 
 
In a message dated 3/6/2012 7:29:36 A.M. Central Standard Time,  
lists at w1nr.net writes:

I just  took some photos of my rather poorly shielded 4-1000 amplifier 
running key  down carrier on 20M with my Nikon D90 and did not notice any 
issues at  all. Neither have I seen issues with my Android smart phone in 
the shack  at any time during a contest weekend.

Mike, W1NR


On  03/05/2012 10:08 PM, Charles Harpole wrote:
>
> High RF fields ...  like being in a shack with two KWs running, puts 
lines in the video of a SONY  PD -100 model camera.  Tested.
>
> Charles Harpole
>  k4vud at hotmail.com
>   >  Date: Mon, 5 Mar 2012  15:43:06 -0500
>> From: k8ri at rogerhalstead.com
>> To:  amps at contesting.com
>> Subject: Re: [Amps] Cell phones, digital  cameras and RF
>>
>> On 3/5/2012 12:40 PM, Fuqua, Bill L  wrote:
>>>     How many times have you taken a  picture of an amplifier tube 
glowing very red with the cover removed and with  a cell phone or digital camera?
>>> I have done it a number of  times and yet the relatively intense RF 
electric fields seem to have no  effect. I have taken photos of my 4-1000A amp 
with
>>> bright red  plate and probably 6 or 7kV p-p rf only a foot away or so.
>>>  They must be very well shielded!
>>
>> They are poorly  shielded, but their operating frequencies and physical
>>  construction makes them pretty much immune to HF.
>> I've never used  the camera in the cell phone because no matter how many
>> pixels  they brag about they are limited by the laws of physics and that
>>  tiny lens.
>> Even the digital SLRs are limited by the lens but with  those you can get
>> the equivalent of a good 35mm  film.
>>
>> The camera in the cell phone is "handy" for some  things but not for
>> images you wish to make full screen on the  computer or prints that are 8
>> X 10 or larger.  At least I've  never seen one. Some smart phones have
>> promised to take multiple  images and  combine them for resolution.
>>
>>  73
>>

_______________________________________________
Amps  mailing  list
Amps at contesting.com
http://lists.contesting.com/mailman/listinfo/amps