Squealing sound in all modes and all bands

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KI7JOM
 

Posts: 2
Joined: 15 Mar 2023, 08:18

Squealing sound in all modes and all bands

Post by KI7JOM »

Hello all! I bought a pre-assembled radio from one of the trusted sellers on Amazon. My radio has a distinct squeal to it no matter what the settings are: volume, agc, vox, etc. When I first power up the radio, you can hear a squeal from the internal speaker. I thought maybe internal feedback, so I tried in-ear headphones. The squeal is still there. When I press any one of the four buttons, the squeal dips in frequency. It also dips with CW keying.

I bought a pre-assembled radio because I have huge fingers and soldering SMDs is VERY hard for me. I'm not afraid to hack away at it though! Where should I start?
DL2MAN
 

Posts: 706
Joined: 30 Dec 2021, 19:18
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Re: Squealing sound in all modes and all bands

Post by DL2MAN »

I suggest
1. a reset (press and hold rotary button, while powering up)
2. re-Install Firmare
If both doesn´t help, I´d suggest to contact sunny for replacement.

73 Manuel; DL2MAN
KI7JOM
 

Posts: 2
Joined: 15 Mar 2023, 08:18

Re: Squealing sound in all modes and all bands

Post by KI7JOM »

Thanks Manuel. I'll give those both a try! Should I write down my frequency offset? Will it be lost in the reset?
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