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MICOR noise squelch board - by Masters Communications
http://www.masterscommunications.com/products/squelch/ms25.html
It is used to create a quality noise squelch logic to be interfaced with a standard repeater controller or radio interface with AllStar. It doesn't mute or control the audio in any way. This board uses the Motorola MICOR squelch chip for noise squelch detection.
MICOR type noise squelch board - by Masters Communications
http://www.masterscommunications.com/products/squelch/ms50.html
It is used to create a quality noise squelch logic to be interfaced with a standard repeater controller or radio interface with AllStar. It doesn't mute or control the audio in any way. This board uses some IC's and other discrete components to provide operation similar to the Motorola MICOR squelch chip.
Modifying a MICOR mobile Audio & Squelch board for use in ...
https://www.repeater-builder.com/micor/audio_squelch.html
Modifying a MICOR mobile Audio & Squelch board for use in a base or repeater station By Kevin K. Custer W3KKC : Concept: This article describes how to modify a common Mobile Audio and Squelch (A&S) board (TLN4310B) for use in a base or repeater station. The Station A&S board can be rather scarce in some parts of the globe.
MICOR Squelch Board - Masters Communications
http://www.masterscommunications.com/products/squelch/ms25_docs.html
It requires discriminator audio and a source of DC power. It doesn't mute or control the audio path in any way. It uses the Motorola MICOR SC6709 squelch IC (also marked M6709 or M7716 depending on manufacturing date). Assembly: If you purchased our kit, refer to the parts list and make sure you have all of the components you need to build it.
Motorola MICOR Squelch Operation and Theory
https://www.repeater-builder.com/micor/micor-bi-level-squelch-theory.html
Adding the MICOR squelch is a nice addition to any repeater receiver and naturally, when a need shows up, somebody fills it for a price. Audio Test Solutions makes a conversion board called the "RLC-MOT" that will add a MICOR squelch into any receiver that provides raw squelch noise. The board is much smaller than the MICOR audio squelch board.
Duplex modification of a mobile Audio & Squelch board
https://www.repeater-builder.com/micor/micor-mobile-audio-and-sq.html
Duplex Modification of the MICOR® mobile "audio & squelch board" By Kevin K. Custer W3KKC. Concept: Make the mobile audio & squelch board less susceptible to RF when using a mobile converted to repeater station, and allow the audio & squelch board …
Modification of the Station Audio and Squelch Board for ...
https://www.repeater-builder.com/micor/station-a-s.html
Anyone that runs 900 MHz MICOR radios will be happy to trade you for that TRN5716 series board. Benefits: Rewiring the shunt switches will allow more effective muting of the audio path. Modify the board to use "And Squelch". And Squelch is very helpful in eliminating the squelch noise burst when using the Motorola PL decoder board. Description:
https://groups.io/g/repeater-builder/topic/micor_station_audio_squelch/32546860?20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,32546860
MICOR station audio/squelch board ID Bob M. #173228 . I've got two MICOR station audio/squelch boards here, but the stamped "TRN" numbers have been wiped off, probably by someone cleaning the flux off the board. I THINK these are TRN6006A boards but I …
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