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Ashhar and all, I found the problem and fixed it. It was not completely bad soldering on the DC connector, it was also the 1N4148 diode in series with the incoming 9 volts being OPEN. After re-flowing

John There is also an Antuino groups.io group. Bob

I had the same problem. Mine was a bad solder joint on the negative battery to switch area. As Farhan says, just reflow it and you should be good. -- Dan, NM3A

Paul, Might this be what your looking for? https://www.adafruit.com/product/1713 Paul KL7FLR

Thanks KE7ER thats helps a lot.

I bought one of these to experiment with, thinking there may be an op amp gain stage between the electret and the A pin (audio out). Unfortunately, there isn't. So unless you want a VOX, this module

OK, I'll check that. The series 1N4148 on the battery line could also be open. I found the schematic. Had trouble downloading from github but finally got it. Thanks, Jim

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

From my post 71040: There's an updated schematic in this July 26 2019 post from Farhan along with a list of changes: /g/BITX20/message/70551 As he states in that post, it all got

That would be nice. Mine works fine on the external power input but 6 brand new AA cells in the battery box (9.56V) wont even light it up. I did check and have the 9+ volts on the PCB terminals but

Check hfsignals website, and the files section of this group.

This may not be going to the right group. Is there a manual available for the Antuino? My unit arrived today. I thought I joined the Antuino group but I see the last posting I received was on 8/17.

Thank you so much for your help Woody! I'll try to get my hand on a small ceramic cap and let you know if this resolved the problem. I'll also try to salvage the ferrite sleeve from an old cable. I'll

Used sticky back copper foil to line the plastic case on my SDRPlay. Worked well. Cleaned up some noise issues. Jim WA3APC

CAREFUL!

On my no-mods-yet v5 ?BitX when I upload the?UBITXV5_CEC_V1.200_16P.hex I get 16 block symbols in the LCD upper row and no function or encoder response. When I upload?ubitx_20._org.hex I get a

I took a course from the Mises Institute once on intellectual property. It wasn't until I was IN the class that I found out the professor was an IP contrarian. He didn't agree with copyright and

On 8/22/2019 20:15, SP9DEV wrote: Would adding a very small capacitor (nano/pico order) help as well? Or would this be too small to make any difference? And another question, does anyone know any

On 8/22/2019 21:38, Donald wrote: Jerry Gaffke, in post #44333, suggested using a 1/2A fuse for the main board, and using 2A or 3 A for the PA. Any suggestions otherwise? Perhaps a little over-kill,

There is a racket going on with college textbooks. These days you can wind up spending $300 on a required book for a class. And there's various schemes to discourage a used market, kickbacks to