Re: digital modes on 2m 70cm
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First, there are other hyper-spectral systems on the market for the blind.
Second, the Tomcat (US Navy not USAF) F-14A+ is no more, The “Falcon” F-16N is an USAF fighter, not long-range fighter interceptor.
Third, the F-16N systems were not affected by that radar gun. If so, the Program Office and AO supporting the aircraft should be relieved of all and any future duties within the USAF Acquisition Corp.
Joseph D. Yuna
Joseph D. Yuna
Principal Systems Engineer
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From: firstname.lastname@example.org <email@example.com> On Behalf Of Bruce
Sent: Wednesday, October 21, 2020 6:18 PM
Subject: Re: [digital-mode-radio] digital modes on 2m 70cm
You brought back a memory of when I was working for the County as a radio tech. I was troubleshooting a pesky problem with a speed radar gun used by the Sheriff. The needle would hang up about half scale instead of falling to zero. Out of desperation I installed a headphone jack in the Doppler Radar audio path. I found the switching power supply was introducing a whine which was seen as a "signal." After I repaired the power supply, I took it on a test run. With the headphones I could hear the Doppler shift as I panned the dish antenna. Pan the signals up a stairway and I could hear the steps. I could tell where walls were. (Note: this could be developed into a useful tool for the blind) If I aimed it at a vehicle that was using a stick shift I could hear the shift points. Hmmm I thought what would it do with Military aircraft landing at a nearby Navy base? We drove to a frontage road that crossed the landing pattern, stopped and waited. Sure enough, a "Tom Cat F16 was landing. There are no "sights" on the gun to aim the marrow beam - but I was able to get a return and the audio tone went thru a screaming 8-10 KHz and the meter pegged hard well above 100 MPH!! I did not stick around for the MP's to show up! I wonder if the F16 IFF alarm went off?!
73 Bruce WA6DNT
On 10/21/2020 1:34 PM, Graham wrote: