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Hi Folks. A little update after some testing (no watt meter, just a dummy load and a Multimeter) rv2&3 - 200 ma, mic ptt. Loud hallow = 1.7 amps but gate volts on FET are 3.8 & 3.99-4volts . is this

Hi Neil, I have the same problem when transmitting on my 20 meter EFHW antenna. The problem is too much RF near the radio. If you install a 1:1 common mode filter choke on your antenna feed line that

Don, I have to apologize here. Wiring the positive lead to the tip and the ground to the ring does put the two headset speakers in series via the two ground wires that are connected together. I

You make electronics a "work of art", an artistic experience. Thanks Don -- Michael Shreeve N6GRG 15901 Cloverdale Road Anderson, CA 96007 530-410-8678 "Don't worry about a thing, 'Cause every

I wired the two wires to the plug so they contacted the tip and middle element of the 1/8" stereo jack. That way my monaural or stereo connections both work fine. On the stereo the base ring never

Hi Tim! So to clear this up. So wire the "tip" only and use a 1/8" stereo to mono adapter for stereo headphones right? (That would work as a safe solution. Not saying it is the only one.) I was less

Mike, How do the two speakers in a stereo headset get wired in series? Usually the positive lead from one goes to the tip and the positive lead of the other goes to the ring. Then they have common

Dedicated to the TDA2282Ms who have given up the ghost with a puff of smoke https://www.youtube.com/watch?v=z15pxWUXvLY Puff The Magic Dragon -- Peter, Paul & Mary ~ Live 1965 Seriously since the

Thomas, You pretty much nailed it. And there is an isolating capacitor on the output, a 470uf one. It's a point I hadn't considered. The problem is that when you connect that capacitor from the

1. It doesn't matter what you would tell someone to do. What matters is the wiring instructions provided for the radio. 2. Connecting the positive output to both the tip and the ring is not a wiring

You do realize than an 8ohm resistor in series with your 8ohm speaker will cut your volume somewhere in the range of half, right? Do you have enough volume output to be able to cut it in half? I

That's a great idea - thanks for sharing that solution! - Jeff AG7NW

I always use an external speaker. I include a switch and headphone jack(s) along with audio limiter for hearing safety and comfort. Details can be found here. ( http://www.nd6t.com/qrp/speaker.htm )

Hi all,? I have been using my uBITX in a case I purchased from Carl Beck, W5BEK. I love the radio! I have one issue going on.? When I transmit on 20 Meters the Raduino switches into menu mode

I'm assuming you're using a good antenna. The noise figure of the front end should be comparable to that of most rigs. In such a case, naturally generated background noise on active HF bands below

I'm finding the uBitx signal/noise ratio on CW to be almost intolerable. ?The background hiss is loud and irritating, and weaker signals get lost in it. ?I haven't tried hardwiring in a narrower

BITX40 ord 2/24/2018, shipped 3/3/2018, sched delivery 3/7 - terrific now for the uBITX ordered 3/1/2018 ):>

This is a non-ASCII code, which suggests that the code had something copied/pasted into it. The error message does a pretty good job of identifying the line number where the error occurred. Go to that

Hi Justin, If you want to change vfo, i think you should check qrp-lab.com for kit to built vfo. Hans Summer make really amassing kits. It Can even be controlled by gps to keep the frequency. There

Did you open the sketch file or entered it with Cut&Paste?? Could be that a <SPACE> was changed to <SHIFT-SPACE> which usually you cannot easily ?distinguish in the editor. Maybe manually typing in