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Squelch Circuit - ElectroSchematics.com
https://www.electroschematics.com/squelch-schematic/#:~:text=Squelch%20is%20a%20circuit%20that%20acts%20to%20suppress,control%20from%20a%20wide%20range%20of%20radio%20receivers.
Audio Squelch Circuit - Making Easy Circuits
https://makingcircuits.com/blog/audio-squelch-circuit/
Application of the squelch circuit is also simple. All you need to do is attach the squelch’s audio input to the receiver’s external speaker output. …
Squelch function // What is it and how to set it properly
https://www.twowayradiocommunity.com/squelch-function/
The squelch function helps to reduce static and excess noise on your radio Briefly . Setting it properly improves audio quality by filtering out unwanted signals. What is the Squelch ? Squelch in the most simple term is a noise gate. For a signal to be heard it must be loud enough to open the gate and come through on your speaker.
Simple Souelch - Radio Amateur 12-1971 - Amateur Radio Archive
https://www.radioexperimenter.us/rm-1971-12/simple-souelch.html
A simple squelch arrangement can be added to most small transceivers, with minimum effort, to alleviate the problem. Two diodes and a few resistors are all that is needed to make this effective squelch. Fig. 1. Simple squelch ckcuit. Install before final audio amplifier.
Squelch Circuit - ElectroSchematics.com
https://www.electroschematics.com/squelch-schematic/
Squelch Circuit. Squelch is a circuit that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal. This squelch circuit is simple and has an amplification for sufficiently large to be incorporated into an assembly of automatically control from a wide range of radio receivers.
US3549795A - Audio squelch circuit for time division ...
https://patents.google.com/patent/US3549795A/en
The squelch circuit of the invention is'therefore very simple and inexpensive, and yet provides good snap action muting, well correlated with the major cause of audio noisepoor timing reference for audio recovery.
WTD Simple Audio Squelch - Amfone
http://amfone.net/Amforum/index.php?topic=16740.0
Topic: WTD Simple Audio Squelch (Read 12462 times) 0 Members and 1 Guest are viewing this topic. Carl WA1KPD. Contributing Member Offline Posts: 1598. WTD Simple Audio Squelch « on: August 07, 2008, 12:06:36 AM ...
Steve's FM Audio/Squelch board
http://stevedold.com/squelch/index.html
This is an FM audio squelch board that connects to an FM receiver's discriminator/detector and provides all of the audio and logic signals needed to connect to a repeater controller. Space on the board is provided to install an optional CTCSS (PL) decoder. It uses a simple low-power microcontroller to measure the noise level from the ...
VOS-1 VOICE OPERATED SQUELCH for SSB Single Sideband …
http://www.naval.com/vos/
Most SSB receivers today have a squelch that operates on the AGC threshold principle. When the incoming signal reaches a threshold as set by the squelch control, the squelch "breaks" and the audio circuit comes alive. This works well to an extent on AM and FM because a relatively steady carrier is involved.
Antique Radio Forums • View topic - Simple tube squelch ...
https://www.antiqueradios.com/forums/viewtopic.php?t=71578
Perhaps one of the others knows of a simple solution. What might work is rectifying the audio. There should be a difference in DC potential between quieting and noise. Use this DC to bias a triode like in the 12AX7 squelch then have the triode cut off the audio tube rather then passing the audio through another triode.
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