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European Pirates and Private Stations / Re: Zeppelin Radio 6959.86 AM 0155 UTC 12 May 2023
« on: May 12, 2023, 0228 UTC »220- Checking back in and can still hear a weak trace of music. YL singer?
Yes.
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220- Checking back in and can still hear a weak trace of music. YL singer?
It would seem that such landlords' only recourse, once informed of the violations, would be to attempt to evict the pirate, which can take many months in some states
Sixteen recent, complaint-driven, FM-related notices to landlords in NY/NJ metro area:
https://thedesk.net/2023/04/fcc-16-pirate-radio-warning-letters-new-york-new-jersey/
Joseph Alexander of the Bronx (New York), the operator of the New Covenant Christian Church, which is the listed owner of a property where an illegal radio station is purportedly operating on 88.9 FM.
I've been buying generic "TPA3116" and/or "TPA3118" (the only difference is whether the thermal pad is on the top or bottom side) from the lowest priced eBay sellers, assuming (and we know what that means) that they were more-less the same. Which they may be, but that begs the real question as all of them I've got do not in fact have either 3116 or 3118 ICs on them, even though that's how they are marked. They cannot, because the real TI parts are in 32 pin packages and the ones I've got are in 28 pin packages! However, they may be genuine TI parts, just different ones - namely TPA3111d1, which is a 10 watt amplifier.
TI offers a family of parts built on the same platform in various power levels, and for those like me who are interested in low power QRP transmitters, the good news is they all can take up to 26 volt supplies, so the same modulator trick can be done.
I was planning to implement a change to cause faults to automatically reset by connecting the FAULT and SD (shutdown) pins together, but that's when I realized the pinout was wrong.
While I don't understand why it is not automatically resetting, the fault that occurs when connecting an input is probably as I guessed, a DC Offset fault: "To avoid nuisance faults due to the DC detect circuit, hold the SD pin low at power-up until the signals at the inputs are stable. Also, take care to match the impedance seen at the positive and
negative inputs to avoid nuisance DC detect faults." The real 3116/8 parts have a separate MUTE input but that pin is omitted on these misbranded TPA3111 parts, and the MUTE terminal is actually connected to pins 1 and 2, which are SD/FAULT. So it may be possible to connect a capacitor that will act like a power-on reset circuit to hold the SD input low at power-up.
I have one of the Wondom 100 watt amplifiers on the way, which I assume will be a genuine TPA3116 for use with a Lulu-type transmitter and it will be interesting so see how it compares.
0152 "In the City" The Jam
0154 OM with English accent saying "I'm not trying to impress anyone but myself" into "Trash" New York Dolls
0156 "Chinese Rocks" Johnny Thunders & The Heartbreakers
0159 "Fall Out" The Police
0202 "(Get a) Grip (On Yourself)" The Stranglers