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Audio


 

I read a webpage where the guy said he was told by Xiegu to only use 32 ohm headphones) earbuds

seems to help some. No rf feedback either. Maybe because I am using it on a dipole fed with coax and not a random wire


 

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Sent from for Windows

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From: Tech Guy
Sent: Monday, February 13, 2023 5:52 AM
To: [email protected]
Subject: [X5105-Users] Audio

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I read a webpage where the guy said he was told by Xiegu to only use 32 ohm headphones) earbuds

seems to help some. No rf feedback either. Maybe because I am using it on a dipole fed with coax and not a random wire

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In my last reply, I forgot to mention that, in addition to the audio amplifier I run, I also homebrewed a 4:1 (stereo to mono) audio transformer for the X5105 and other audio-bud type outputs. Yes, the X5105 is a 32ohm, stereo headphone output and should not be use with 8 or 4ohm mono speakers directly.

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See the picture below. The transformer can be used in either direction, but it doesn¡¯t make much sense going from 8ohms to 32ohms.

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The 32ohm, stereo input side gets plugged into the X5105 and the 8ohm mono output side gets plugged into a speaker. The third connector (screw terminal) is the same as the other input but terminated so it can plug directly into my headphone amplifier instead of the X5105. The transformer can handle up to about 10W RMS to the speaker, way more than anyone would need. If you decide to make one, I highly recommend using real shielded microphone-type cable for the connectors to eliminate outside noise on the audio.

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This transformer makes a big difference in audio clarity and provides the ability to crank-up-the-volume, when necessary. BTW, I set the X5105 audio output software setting to headphone when using the amp, and speaker without the amp, for clearest audio.

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Best 73, Lou N2JPR

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Sent from for Windows

?

From: Tech Guy
Sent: Monday, February 13, 2023 5:52 AM
To: [email protected]
Subject: [X5105-Users] Audio

?

I read a webpage where the guy said he was told by Xiegu to only use 32 ohm headphones) earbuds

seems to help some. No rf feedback either. Maybe because I am using it on a dipole fed with coax and not a random wire

?


 

Sounds reasonable. No version of the 5105 does Bluetooth does it? 6100? I¡¯m probably going to use the earbuds anyway due to size. ?Managed to work a few stations on 40 with good reports on TX. Thanks
73s John N4HNO?