Nothing beats the jackal board.

Hans, who has been a source of major inspiration for us all has been recognised as a homebrew hero. https://homebrewheroes.org/?fbclid=IwAR0D4j4ZxMY49m59R6jlvjyAx7tXRRgTWIdPArz-zUgIAWX0_AG3OqbKq3o Tho

I had previewed a raspberry pi board for hf radios with a high end codec at the fdim. This is for a new radio that i am building to push the limits of what my homelab capability can produce. Pictures

#ft8

I too was reading up on it the other day. It would be easy to just take the output from the 3db rf attenuator pad into the audio preamp of the express receiver. - f

If you are thinking of a bank if band pass filters, then you dont need the complexity and performance hit of the double conversion ubitx. Go for single conversion like the bitx40 or bitx20. The perfor

Jonathan, I can arrange for a blank PCB if you want to solder it all up. it hurts my wrist to do it all over again. i have done it several times to test the new boards. there is very little education

You have the K8CEC website itself anf the github repo with sufficient documentation. Additonally, ubitx.net offers a more narrational form of documentation. F

#firmware

It looks like your potentiometer doesnt have a +5v connected. Can you confirm that the pot's center pin changes voltage smoothly between 0 to 5v as you tune it? - f

Sorry, it took a while to get my membership on the antuino group. SBL should work, probably even better than the ADE-1 - f

Allison, Glad to see you pitch in. How has your experience with the paralleled IRF510s been? You managed to push them to 50 Mhz.

The WA2EBY amp has been the staple around the bitx community. I am bored with the IRF510s now. I just bought a triplet of 811a tubes. I am mortified at the thought of 1000v dc in the shack...

That is what the Antuino is.

we did shipt them all out almost a month ago. I don't think anyone received them. Part of the problem is that the parts are very tiny and the indian customs where confused. I guess they tried licking

If you guys can locate, look for the bitx20a manual. It has a Tayloe T/R switching system. The other mod will be to keep the lpf relays powered up. The heaviest lifting is what we can do to avoid the

A 12v power supply is recommended. It draws about 80 ma of current when in operation. Most of it goes to light up the display. I didn't have any spare pin on the Arduino to turn the power to the displ

I have used Raduinos as a general purpose VFO on many radios. It works quite well. - f

the link is not opening miguel, can you recheck the url? - f

I think it could even be an issue with the way the LM386 is wired up. The power supply to the audio amp is via a 100 ohms resistor. So, when something loud gets into the audio input, it would draw mor

Jim, The SMD parts are assembled on a Panasonic pick and place. No chance of a reversed diode. What is, however, possible is that the DC connector, which is hand soldered, hasnt been soldered properly

You could just make LC filters as well. A triple tuned filter should do the trick. While you are at it, change the 1st IF from 45 Mhz to 60 MHz or beyond. - f

#bitx20 #bitx20help #bitx40 #bitx40help #filters