Dave--- That is open squelch (White Noise) before and after the approximately one second presence of the signal----the data, if there is any, is thought to follow the third tone and finishes before the signal carrier, with PL, goes away.
Scott ----- Original Message ----- From: Dave Schmidt To: [email protected] Sent: Tuesday, December 12, 2006 12:02 PM Subject: Re: [Repeater-Builder] Mystery Signal In the wav file.... is that white noise or data bursts before and after the dtmf? Dave / N9NLU On 12/12/06, Jaime <[EMAIL PROTECTED]> wrote: Sounds like a digital signal. Could it be one of those new d-star rigs that some one has activated the autodial feature on the dtmf pad too? The DTMF sounds like it is coming from an autodial feature. My HT has this feature and so does my mobile rig. Jaime-KA3NXN ----- Original Message ---- From: Scott Overstreet <[EMAIL PROTECTED] > To: [email protected] Cc: Scott Overstreet <[EMAIL PROTECTED]>; Dave Platt < [EMAIL PROTECTED]> Sent: Tuesday, December 12, 2006 2:10:08 PM Subject: [Repeater-Builder] Mystery Signal Hello All An interfering mystery signal has suddenly appeared on the input (144.670 mhz.) of our repeater. Using a five kc. wide FM detector---The signal is approximately one second in duration---- opens with 100 hz. PL (which continues throughout) and then three DTMF "zeros" follow in rapid succession and then possibly a short period of some sort of data. The signal repeats exactly two times an hour and the source is off in between transmissions. This goes on continuously without interruption or apparent change. Our area is between urban and big city and the signal is strong enough to be heard over a wide area using only an HT. A wave file of the mystery signal is at: http://www.radagast .org/~dplatt/ hamradio/ Signal_3. wav using an FM detector with wide open squelch. We are obviously very interested in identifing this signal and its origin---- What is it ? Thanks-- Scott, N6NXI ---------------------------------------------------------------------------- Any questions? Get answers on any topic at Yahoo! Answers. Try it now.
