开云体育

Farhan, It is good to know that the SMD devices installed on the sBitx are COG 250 volts.? That is far and above the needed rating for the V3 power levels.? Do you know the size?? It would make it

I am appalled. These are 250v C0G parts purchased from Mouser. - f

Congratulations, Jack!??Persistence pays off. When checking the voltage spec on the capacitors, remember that the scope is measuring peak to peak, so the capacitor rating needs to be greater than

Success: C402 had failed. It's suppose d to be 470 pF but when removed measured only 18 pF. Thanks Evan for the encouragement. I had waited to remove each SMD capacitor but with my SMD hot air station

Well I’m glad to hear that the cw reading has been improved because it was pretty close to dreadful. That’s not your fault, FLDGI just had a lousy algorithm. I tried to steer people away from it.

I get it that the pandemic showed that the Pi had a large and captive audience, but it also forced users to explore a lot of alternatives, both other embedded computers as well as low-end desktops and

Gordon, The cw decoder of v3 works better. It is better than most other algorithms and I have ideas on how to make it better. I think I need ti get onto a call with people "invested" in this to decide

We will need a way to detect when the web ui is active to prevent this (thinking hard...) [email protected]> wrote:

Try changing the diodes first. Be sure to use 1n4007s from Mouser ir Digikey only. The others don't work as expected.

Yes, it should only some up if you go to a really really low frequency like 500 kHz

Jack I am unsure that the in-circuit capacitance should sum up with the inductors between the capacitors.? Could this point to a short in one of the toroids?? It may be a good idea to pull the

1. Have you looked at the waveform going into the low pass filter to be sure that it actually looks like the right frequency? Is there a possibility that you have more second harmonic then

Steve -- OK, so quick easy workaround until there is a fix. Plugged in a set of headphones. Problem temporarily solved, everyone in the house is much happier. 73 Roy

2021, 2022: enormous effort was required to even FIND a raspberry pi. You could expect to spend well over $100, you might have to pay 170 and buy a complete starter set up to get one… For

I've read that sidetone suggestion. Unfortunately I have CW sidetone at 5, sbitx volume at 40, and set desktop volume to 16. What happens (additional info) is as soon as the FT8 TX starts, the

Jack - is anything in that LPF getting hot when you transmit?? If there's a short, that RF power may heating the shorted device up. 73 and HNY; Steve, N3SB

FYI - there are two versions of sbitx.c - the first one includes Gordon KX4Z's mod to eliminate LPF relay chattering during CW transmit on the DE. The second version is more appropriate for those with

I checked voltages on 17 meters along different points of the LPF chains first through LPF_A and then through LPF_B (the one that seems malfunctioning). CW, Drive=100 LPF_A???????

Hi Roy; Right now the way to turn down the FT8 monitor volume during transmit is to change the mode to CW and turn down the sidetone level, then go back to FT8. 73 and HNY; Steve, N3SB

I have been following the audio thread over the last days, so hopefully someone will have a suggestion for my problems. When using FT8, the transmit volume is reset to 76 (as seen on the desktop