[RFI] RFI Digest, Vol 115, Issue 23.....identification or rfi

N1BUG paul at n1bug.com
Sun Aug 26 11:32:07 EDT 2012

I would like to see the photo of an ultrasonic RFI locator with 19" 
dish. I would also like to know where you got the dish. I have a 12" 
one and have thought about trying to go larger. The problem is 
finding a dish that is flat enough. The available 40 kHz transducers 
have about 50 degree directivity. That requires a very flat dish. I 
haven't been able to find any suitable candidates.


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