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Audio line isolation transformer - ePanorama
https://www.epanorama.net/circuits/audio_isolator.html
Building yourself an audio isolation transformer. If you want to build one yourself, you have to get two audio transformers which have 1:1 transformation ratio and greater than 1 kohm impedance. There are high quality audio transformers in the markes that meet those specs, but those can be quite expensive.
eHam.net
https://www.eham.net/reviews/detail/10306
The Radio Design Labs TX-LM2 audio isolation transformer has proven to be a neat little solution to a vexing audio problem in the operation of my home Amateur station. That problem is the isolation of audio lines shared between different audio components and …
RadiolaGuy.Com : isolation transformer - Vintage Radio
https://www.radiolaguy.com/info/Isolation%20Transformer.htm
Take care in operating such radio and you test equipment as serious damage can result to your equipment without the use of an isolation transformer. Some vintage radios were made in metal cabinets and can be DEADLY if the AC line is at case or chassis potential.
Isolation transformer recomendation | QRZ Forums
https://forums.qrz.com/index.php?threads/isolation-transformer-recomendation.580962/
G3YRO Ham Member QRZ Page. As has been suggested, ANY suitable mains transformer with TWO 115V Primary windings will do as an isolation transformer. By "suitable" you just need to make sure it has the same rating as the radio . . . ie if the radio takes 30 watts, you need a 30 watt (or more) transformer.
RADIOWAVZ ISOX - Ham Radio Outlet
https://www.hamradio.com/detail.cfm?pid=H0-008707
RF ISOLATION TRANSFRMR The ISOX is an UNUN Unbalanced to Unbalanced Isolation transformer. It's designed to provide galvanic isolation and inter-coupling of an at least partially unbalanced line and a substantially balanced line having similar line impedances which is capable of passing differential signals over a wide bandwidth while substantially attenuating any …
DIY Ground Loop Isolator: How To Make a Ground Loop …
https://www.radio4all.org/diy-ground-loop-isolator/
Audio Isolation transformers. You will need an audio isolation transformer with a 1:1 turn ratio. If the transformer has four terminals on each side of its primary and secondary sides, you will need only one isolation transformer. If it has only two terminals, you will need two transformers. You can get an isolation transformer from an older ...
Hamradio.in
https://www.hamradio.in/projects/digi-vu
A swift kick in the rear would be a more appropriate term. This was provided by Miku, VU2WAP. He offered me his Rigblaster Nomic for reverse engineering. Looking inside I found a 600 ohm 1:1 audio isolation transformer for PC to transceiver mic input and presets for level control An opto-coupler was used for PTT keying.
W3YY Audio Control System - Amateur Radio Station
http://w3yy.com/audio_control_system.htm
In the system described here, I use balanced pro-level audio whenever possible. If I need to interface with an unbalanced audio connection, e.g., the audio input and output on the radio or PC, I use a high quality isolation transformer to provide the necessary balanced to unbalanced conversion as well as to break any potential ground loops.
Audio isolation transformer picks up 50 Hz hum. How to ...
https://www.reddit.com/r/amateurradio/comments/4et578/audio_isolation_transformer_picks_up_50_hz_hum/
I wanted to test if the lack of isolation was an issue, so I put a 600:600 ohm audio isolation transformer on the radio-to-computer line. First off, ouch. The radio (which is powered by a Kenwood KPS-15 switching power supply) floats at 87 volts above the computer ground. The computer is connected to the earth ground.
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