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QCX Mini Loud audio clicks

Luis Pacheco All Messages By This Member #110197 Hello all, Please, I need your help. I built the QCX mini 20m version initially with no problems. Rx was good and TX went to 5w after tweaking the filter inductors. A few days later there are some loud audio clicks. Rx is still working when between clicks. Some times there are periods of a few seconds with good audio, then they come again. Any clue to the origin of the problem? In attach is a sample of the audio. Thank you Luis CU2IJ -- Cordiais sauda??es, -- Cordiais sauda??es, Luís António Mota Albergaria Pacheco móvel: +351 962374276 luis.a.albergaria@... luis.a.albergaria@...
Ronald Taylor All Messages By This Member #110201 Hi Luis. That sounds like interference to me. So, maybe a dumb question but ... Is either the radio or the antenna close to your Wi-Fi modem? Or close to a cell phone? I've heard my cell phone data transmissions in my QCXs if the phone is within a half meter or so of the radio. I also hear a continuous tone (not clicking) on about 14.030 MHz that is coming from my wi-fi modem about 2.5 meters from my operating position. Possibly even something from a power supply or some other gadget in the vicinity. It also sounds a little bit like an electric arcing somewhere in the area to me. When I was a kid?we had an electric fence and it made very similar sounds on the radio whenever weeds grew up into it. Just some thoughts. You might try running it on a battery to eliminate noisy power supply and/or move it to a different location away from your house on a temporary wire antenna and see if the issue persists. Good luck ... 73 .. Ron toggle quoted message Show quoted text On Sun, Sep 17, 2023 at 1:24?PM Luis Pacheco <luis.a.albergaria@...> wrote: Hello all, Please, I need your help. I built the QCX mini 20m version initially with no problems. Rx was good and TX went to 5w after tweaking the filter inductors. A few days later there are some loud audio clicks. Rx is still working when between clicks. Some times there are periods of a few seconds with good audio, then they come again. Any clue to the origin of the problem? In attach is a sample of the audio. Thank you Luis CU2IJ -- Cordiais sauda??es, -- Cordiais sauda??es, Luís António Mota Albergaria Pacheco móvel: +351 962374276 luis.a.albergaria@... luis.a.albergaria@...
Luis Pacheco All Messages By This Member #110203 开云体育 Spot on, Ron Seams to be some sort of interference. Thank you for your help. Best 72 Luis CU2IJ On 17/09/23 21:27, Ronald Taylor wrote: Hi Luis. That sounds like interference to me. So, maybe a dumb question but ... Is either the radio or the antenna close to your Wi-Fi modem? Or close to a cell phone? I've heard my cell phone data transmissions in my QCXs if the phone is within a half meter or so of the radio. I also hear a continuous tone (not clicking) on about 14.030 MHz that is coming from my wi-fi modem about 2.5 meters from my operating position. Possibly even something from a power supply or some other gadget in the vicinity. It also sounds a little bit like an electric arcing somewhere in the area to me. When I was a kid?we had an electric fence and it made very similar sounds on the radio whenever weeds grew up into it. Just some thoughts. You might try running it on a battery to eliminate noisy power supply and/or move it to a different location away from your house on a temporary wire antenna and see if the issue persists. Good luck ... 73 .. Ron On Sun, Sep 17, 2023 at 1:24?PM Luis Pacheco <luis.a.albergaria@...> wrote: Hello all, Please, I need your help. I built the QCX mini 20m version initially with no problems. Rx was good and TX went to 5w after tweaking the filter inductors. A few days later there are some loud audio clicks. Rx is still working when between clicks. Some times there are periods of a few seconds with good audio, then they come again. Any clue to the origin of the problem? In attach is a sample of the audio. Thank you Luis CU2IJ -- Cordiais sauda??es, -- Cordiais sauda??es, Luís António Mota Albergaria Pacheco móvel: +351 962374276 luis.a.albergaria@... luis.a.albergaria@... -- Cordiais sauda??es, Luís António Mota Albergaria Pacheco móvel: +351 962374276 luis.a.albergaria@... luis.a.albergaria@...
Bruce Akhurst All Messages By This Member #110218 The most obvious questions are does it do the same with the antenna disconnected and on an alternative power supply ideally 9 orb12 v from a battery?

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