I have sent a few pictures to N1BUG directly. If
anyone else would like me to see them, drop me a
e-mail. The reflector won't accept photo's.
The April 2006 QST page 41 has the article on
building the ultra sonic detector.
On 8/26/2012 10:32 AM, N1BUG wrote:
> 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
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.2197 / Virus Database: 2437/5225
> - Release Date: 08/26/12
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