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A well-known problem... and I've encountered it here occasionally for some time (when I have that rarity, free time - and turn on my radios). It used to be that I often encountered S9+20-30 noise

Hi all, I'm developing a firmware for use without the screen, just over CAT, with some pins assignments for my project needs, but which can be easily wiped out. A totally new protocol is used for CAT

When I was a highschool ham kid growing up in San Francisco, the line noise was so bad that I once saw it indicate on my SWR bridge! - Jerry KF6VB

I purchased the full kit of Farhan's uBITX V6.? It went together easily and quickly.? Then I added the Teensy 4.1 adapter from the Skonk Worx replacing the supplied Raduino.? Before installing the

That's a good point. Tune down to the 074 position of the FT8 and if you hear a gaggle of them, you're likely hearing usefully. But I like to listen in the CW portions, there are usually some CW ops

Don't get overboard, this seems to be the new normal. The bands are empty besides the infernal noise of FT8 and a handful of diehard SSB / CW operators that one can count on 2 hands and yet, reports

The SMD cap is a ceramic and I consider them superior to the leaded variety. Raj

Hello, I wanted to know what type of capacitor is most effective for a power decoupling. Basically, is a SMD capacitor as effective as a ceramic or something other? In addition, there is a calculation

And nevermind... I figured it out. In my haste to test the broadcast filter, I failed to unplug the uBitx from USB. I had turned off the rig and never turned the power back on. So evidently there's

I recently acquired a ubitx v6 used and in all my tinkering, I can't get the audio through the speaker to resemble anything intelligible.? The audio using headphones however is distinctly

oshpark also has a "qrp bitx tia" ...surface mount termination insensitive amplifier ... again from EMRFD and similar to the amps in the micro-bitx...nice gain block Jim

Scott, One thing you might need to consider is your 200 spots on PSK Reporter my only be from receiving stations that might not be transmitting. Skip Davis, NC9O

Set the volume controls so that with the antenna connected and a quiet or relatively quiet part of the band, the volume is loud but not clipping or distorted. Measure the AC audio level. Remove the

The ubitx is my only hf gear.? What would I need ideally to quantify background noise and can I approximate it without additional gear?

That should’ve been going from no antenna to your antenna. Didn’t catch that voice recognition error. Really important to have some measurement of your background noise.

How much local noise are you experiencing? inverters, solar panels, noisemakers, Power line noise? In the middle of the day when you listen in the lower half of the 20 m band you should hear lots and

Still having quite a bit of fun building/moving antennas and using the uBITX to learn about propagation. This has me confused however.? Here's what I believe are the relevant details; uBITX ver6 1/2

Mark Well if your ubitx requires it at your qth, by all means finish it. I suggest making a note to ID this toroid, then finish building it. If it works, well we don't? need to know how many turns

Hello, see here: [email protected] | Only noise when connected to the antenna (

Hello, I found the source of the problem. Parasitic oscillation due to improper decoupling of the power supply on the conversion part No1. Now I get it, but it’s still a little distorted. It makes