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I bought a BitX40 a while back with no intention of using the Raduino. It's still in the bubble wrap. $30 shipped prio conus. Email me direct if you're interested. vev at michvhf dot com Vince. --

Hello, All; My BITX40V3 Raduino just went "Tango Uniform"... Display is blank, (blocks only), no control of tuning, will not accept a reload of the sketch. COM port seems ok. Anybody have a spare

Becasue we are all using an Indian-designed device to launch quantum particles into the universe, I thought you would all be interested in this beautiful video.?? The Quantum Indians | | | | | | | |

I'm looking at getting a second bitx to multiband. I know this wouldn't work for the LPF, but I wondered if anyone had considered or tried making band pass filters using standard value miniature

BITX QSO Night, Sunday, October 22, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere Join us as we make contacts from BITX40 to BITX40 on 7.277 MHz in 40 meters! This is a worldwide event

Yes, beware q13 and qro. I just blew it up. Fwiw, an ordinary 2n2222a works quite nicely.

what i meant is that you must terminate all the clock inputs into resistive loads of between 100 and 80 ohms and then measure the spurs. - f

Here are the two lines (highlighted yellow below) I added to the checkTX routine at line 666 (in v1.25.1) to prevent the carrier burst. Will also be included in v1.26 (to be released soon). void

That looks like a great deal also! ? -- John - WA2FZW

The ones? I got were Nylon Unthreaded Spacers, 1/4" OD, 7/16" Length, for Number 4 Screw Size; item number 94639A690 ( https://www.mcmaster.com/#94639A690 ) ? -- John - WA2FZW

Yes Dave; ? ? ?That sounds like it would work, at least to the extent that it would suppress the Rx pop to the AGC limit. Connecting the diode directly to the gate of the FET might be more

I got a box of 180 assorted M3 standoffs from Amazon for ~$8.

I think I know what the problem is whith not being able to see emailadress etc. I opted for the read online only? ( no email update) and it seems like the site don't post the letters after @ .

https://www.mcmaster.com/#nylon-spacers/=19w4vsx ( https://www.mcmaster.com/#nylon-spacers/=19w4vsx )

/g/BITX20/topic/step_by_step_raduino_software/5038330?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,5038330 (

Hey John are these the right ones? I'm thinking not sense they are like a 1.28 a peice. The ones that are not threaded seem to come in packs of 100

The measurements should be through a 50 ohms pad. [email protected]> wrote:

No, no other mods. The only thing that might make a difference is that I'm using 75ms delay instead of 50ms. I found that for my rig 50ms is just too short to completeley eliminate the burst. (BTW

I was thinking of using the tx output from the Raduino, which goes to +5 on TX and drives the transistor that then drives the relays, rather than the PTT Sense which as you say goes to?zero on TX.?

Thanks Allard.? I did try using the PTT sense but still got a very short burst of carrier visible on the scope connected at the antenna output.? Maybe you have some other pop reduction mods in place