Hello, This is not too much the subject, but as the other smartphone is not compatible with the screen, I will disassemble it and look at the state of the welds USB. See this example: Réparer le conne

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Hello Thank's for the recommendation I have another identical phone that I had dropped (after 3 days) and so the touch screen is broken. So I’m gonna swap the motherboard as soon as I can. I also alwa

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Hi Gerard, Mail pictures to yourself to move them from phone to computer. Jamey

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Hello, I tested my homebrew USB filter (It's a module) with a generator and oscillo as I planned This is not the most academic method but it seems to work I’ll give you a pretty gross result I put a r

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QSL Skip. It was meant for others here that did not have the prior experience. It is useful to evaluate receiver filters using noise and a audio spectrum analyzer, just software into a PC. Curt

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Yes Curt, I’ve used Spectrogram to setup the filters in my Elecraft K2 and it has been widely recommended on the Elecraft reflector from the beginning. Skip Davis, NC9O

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Maybe this is covered deep in the thread but I see mention of Spectrogram an audio dsp program. Tune to a spot that has only noise feeding a sound card. This will show well the shape of IF filtering.

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I read also "I would like to inject a signal directly on the Ubitx board and check out. My question is: What is the best place to inject the signal and the one to visualize.". The place to inject the

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gerald, kind of like an isolated ground. Place i worked for, we used transformers to isolate the grounds and also the sources fro the regular fed sources in electrical.. The source voltage went thru a

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I forget Separate ground betwwen analogic and digital signal (Connection with inductor or very fine track on the PCB (Solderjumper option) (It’s one of the methods I’ve been able to read on the net to

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Here carateristics of my second version of Cocoricco Ubitx Extended 12v and 5v power supply tracks Possibility to power the PA by 12v or external power supply (Handsolder jumper) Separate integrated p

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hello, Let me explain. This is a Ubitx of my manufacture (The scond Cocorico Ubtx lol) The SI5153 is on a small removable PCB. The nano is on support. The SSB filter is removable So without the SI5153

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Just to add to the headache. Amplitude response is not all. Phase response has to be flat as well. This needs a little hand waving... The crystal filter has a sizeable delay between the time a signal

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The Question was How to test an SSB filter Use Spectrogram

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Gerard, Why so completed if it could be done easily? Half way the movie on https://youtu.be/YN7mWSUraac and in the descibtion on that link is explained to to do it with only a laptop/PC with Windows.

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Hello, How to test an SSB filter if you only have a generator (it can continuously scan a frequency range, for example 10-14Mhz) and I can synchronize the oscilloscope on scan cycle + visualize the ou

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I live in Birmingham also. I am interested in buying. Jamie - KM4WYO Sent from AT&T Yahoo Mail for iPhone

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Changing subject. I have an uncompleted BITX 20. I will pay someone to complete and fix it to operate or if you want to buy it with all parts and instructions (USA only), I will sell it for $30 (buyer

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Ian, -27dbm at center should read less than -30dbm. So I guess you have 4-5db more signal. Change R20. first put a 1K-2.2K trimmer and bring down your line to just below -20 and check value with ohm m

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To eliminat the ripple at higher bandwidth, you can increase the impedance by adding resistors in series at both ends. Start with 100 ohms resistors.

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