I have one of these units ... http://pw1.netcom.com/~t-rex/ ... A nifty device. I purchased the complete unit as a kit about 7 years ago for around $40 plus shipping. I have never seen him advertise the kit, I found out about that after I contacted him. The gentleman that produces this kit is also a ham, a KC7 .... in Nevada. I added a $14 radio shack speaker/amplifier for all to hear. I have not used it to find noise, when the rain stops I'll see how it does. I does have about a 150' to 200' detection range on the local bats depending as per my gain setting.
73, Mike WA5POK -----Original Message----- From: Tim Duffy K3LR Sent: Wednesday, December 21, 2011 8:38 PM To: 'Chet' ; 'Lee Ward' ; topband@contesting.com Subject: Re: Topband: Noise problem question Hi Chet: Just add a "l" to the end http://www.midnightscience.com/ultrasonics.html I own one of these units - it is great for finding power pole problems. 73, Tim K3LR -----Original Message----- From: topband-boun...@contesting.com [mailto:topband-boun...@contesting.com] On Behalf Of Chet Sent: Wednesday, December 21, 2011 8:01 PM To: 'Lee Ward'; topband@contesting.com Subject: Re: Topband: Noise problem question The link noted below does not work for me. I am using I E 8. I tried it 3 times. Please post a better one if you have one 73 Chet N4FX -----Original Message----- From: topband-boun...@contesting.com [mailto:topband-boun...@contesting.com] On Behalf Of Lee Ward Sent: Wednesday, December 21, 2011 8:27 PM To: topband@contesting.com Subject: Re: Topband: Noise problem question Phil, W0XI, has put a kit ultrasonic detector on the market. Well worth looking into. http://www.midnightscience.com/ultrasonics.htm 73, Lee, K0LW -----Original Message----- From: topband-boun...@contesting.com [mailto:topband-boun...@contesting.com] On Behalf Of W2PM Sent: Wednesday, December 21, 2011 4:04 PM To: John G3PQA Cc: David Raymond; topband@contesting.com; Jon Zaimes AA1K; W5UN Subject: Re: Topband: Noise problem question I have used one which the ARRL RF lab brought down here to address a very serious problem. We were able to identify the BOLT on the insulators where arcing was coming from, photograph it, attach both the audio file and the spectral display unique to each offender and the power company still reneged. Until FCC saw this and that was the end of the power company resistance. Problem fixed. Those devices are not easy to aim however. You need a steady hand and lots of patience. Sent from my iPhone _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK