From k0dan at comcast.net Sat Jun 15 12:05:39 2019 From: k0dan at comcast.net (dt) Date: Sat, 15 Jun 2019 11:05:39 -0500 Subject: [Motorola] Moto Siren/Pa 4-Sale In-Reply-To: <1ABD583F-2AD3-41AE-BA32-B73B2B63AA67@mac.com> References: <1ABD583F-2AD3-41AE-BA32-B73B2B63AA67@mac.com> Message-ID: <785a6997-d9e1-6ea2-7f8f-73c28a4e6957@comcast.net> MOTOROLA SIREN/PA This is a Motorola TLN1705B Systems 90 Electronic Siren and Public Address System. It consists of a Systems 90 control head with siren/PA module, power & control cabling with connectors, and TLN1691B siren power amplifier. All mounting hardware is included, along with an original Motorola manual. The control head can be integrated with other Systems 90 options and accessories, and can also be interfaced to other equipment. The power amplifier can drive a 100 watt speaker (85 watts RMS at 13.6V and 115 watts at 15 volts) in siren mode, and 45-55 watts RMS in public address mode. No speaker is included. Siren modes include Manual, Wail, Wail Override, Yelp, and Hi-Lo. This system is in fully operating condition, and in very good electrical and cosmetic condition. It has never been operated mobile. Rather, it was incorporated into a home burglar alarm system, and interfaced to an included custom alarm control board (timers, indicators) which is triggered by either normally-closed or normally-open sensor loops. Construction notes also included. The "Motorola part" of this system can easily be separated from the burglar alarm control board by simply removing the alarm board from the control head (see photos for details). Photos at: https://www.dropbox.com/sh/q79k92v7umu5qir/AACC4pY8HQZnbCvyBLn257-2a?dl=0 $95 + shipping or free local pickup Dan K0DAN k0dan at comcast.net From ad7i at ad7i.net Sun Jun 30 13:04:37 2019 From: ad7i at ad7i.net (ad7i) Date: Sun, 30 Jun 2019 13:04:37 -0400 Subject: [Motorola] Seeking info regarding Motorola Permacode Filters Message-ID: I'd like to use some Motorola Permacode filters (those used in Minitor II pagers) to make my own home-brew two-tone decoder. Does anyone happen to have the pinout for the Permacode filters? These are 4 pin devices and I suspect the pins are Ground, Power In, Audio In and Audio Out. But I'm guessing; sort of groping in the dark a bit here. I'm also looking for the specific voltage used to power the filter. And finally, what's the expected output from the Permacode filter with the proper frequency input tone? A sine wave at the desired frequency (like a very high Q band pass filter)? or is there a level detector in the Permacode filter so the output is a DC value (i.e, something like low output on correct tone detect and high output otherwise)? Is there some place I could get a copy that portion of a Minitor service manual that shows how the Permacode filter was wired into the system? I appreciate any information people can provide about these filters. Thank you. Paul, ad7i ad7i at ad7i.net