[RFI] RFI Identification Help

[Dale]

Kurt,

Regarding RFI from a digital recorder ...  That's why I keep a few analog cassette recorders around.  I even have a pair of hand-held "note takers" with built-in mics and powered by 4 AA cells.  They work great.  

Analog is NOT dead, it is still RF "clean", and yes, you can still buy blank cassettes (just saw some on the shelf at a Walgreens this week).  If you need a digital version of the recording afterwards, just connect the earphone output jack of the cassette machine to the mic input jack of your computer (adjust audio levels accordingly), and convert to MP3 with your favorite conversion software. 

73, Dale
WA9ENA   


-----Original Message-----
>From: KD7JYK DM09 <kd7jyk at earthlink.net>
>Sent: Nov 14, 2013 12:33 AM
>To: rfi at contesting.com
>Subject: Re: [RFI] RFI Identification Help
>
>"That also means shutting down computers and turning off any UPS that might 
>start up when the power drops."
>
>Don't forget to remove batteries from everything you can.  Many times I've 
>been plagued by a sound only to find it's in a laptop, that's shut off, my 
>HT, shut off, but in standby mode with "soft start", digital cameras with 
>internal clocks, electronic watches, for example, my Glycine Airman, which 
>ironically wipes out reception on navigation RDF equipment, a new digital 
>voice recorder to record RFI, yep, produced so much RFI nothing else could 
>be heard...  My friend jumps in the car, her cell phone, which is OFF, 
>generates a God awful amount of RFI, the digital camera I use to photograph 
>damaged power pole equipment, it screams so much I have to turn off my 
>receivers...  I can clearly hear what my daughter listens to on her MP3 
>player across a couple hundred MHz...  There's a LOT more to disable than 
>just flipping a main breaker, unless, of course, your RFI is 60 Hz and 
>nothing else!
>
>Kurt 
>
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