20 Most Recent Inland 3500 Consumer Headset - Page 7 Questions & Answers


The squelch control is advanced as far as required to quieten background hissing and weak radio signals - the squelch is an adjustable barrier that blocks unwanted signals and if advanced too far can also block wanted signals.

Many portable and handheld radios today employ an automatic squelch.

If the squelch control isn't working it is a job for the repair shop...

Radio... | Answered on Jul 03, 2019


Here's some info on the 601. Maybe it will help.

https://g8yph.blogspot.com/2015/07/avair-av-601-review.html

Here's the company website where you can download manuals.

http://www.avair.com.tw/support.html

Radio... | Answered on Jul 01, 2019


Not sure you can get 12 db from 6 elts.
From link below, looks like you'll need 8 or so.
https://www.electronics-notes.com/articles/antennas-propagation/yagi-uda-antenna-aerial/gain-directivity.php
Here's a design of one with 6 elts. You can size the elts proportionally to your desired freq. But it has less gain that you are looking for.
https://273k.net/gsm/designing-and-building-a-gsm-antenna/yagi/
If you want really high forward gain, maybe try a corner reflector, which will give you the desired db.
http://www.microwavetools.com/corner_reflector/
You could also try a rhombic, which can have extremely high gain if you have the space for it. There are many articles on rhombic design available.

Radio... | Answered on Jul 01, 2019

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