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I used those listed in the BOM: https://github.com/DRWJSCHMIDT/T41/blob/main/T41_V012_Files/T41_V012_BOMs/T41_BPF_Board_BOM_V12.6_02-16-25.pdf

Hi Oliver, What capacitor values did you use to go with these inductor values? Did you use D.Solt's values or Bill's John, G0SDF

You have a pretty good method for winding the coils and I don’t want to overlook that… I sometimes forget I am an insider and don’t always think all the angles… too close to the trees. Dr.

I was just offering to help, if you wanted me to. But, you're right, it would be better for someone with a solid electronics background to do it.

You can do the part that is familiar to you, yes. But I do sell it as a generic kit for other QRP radios too… and it has a lot of additional functionality above what we use for the T41. I’ll have

First things first. If you load the I2C scanner software, does the audio hat respond at address 0x0A on WIRE like it should…? If not, concentrate your resoldering efforts around Pins 18 and 19…

Do you want me to do it?

You're right, I forgot! Jack, W8TEE

V12 Boards Ver 50.2 SW All is working no freeze up or glitches since installing ferrite sleeves on ribbon cable. However if I install the audio hat it never finishes boot up before program stops with

Not its time to do it for the LPF too… and a section on winding that line section transformer and how to make the Power and SWR measurement work. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ

You are the one that wrote that section of the manual… so, yeah! I know, we have both slept… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big

Nice. Very complete. Is the term "stacked" explained in the manual? Jack, W8TEE

I just put this together today and added it to the back of the Assembly Manual. Makes it easier to see everything in one place. The next thing I’ll make and add is a test sheet for measured vs

I made up my own table. I just put one turn around the core, marked it with a sharpie. Then measured it. Then made up a spreadsheet, adding 2 inches to each length for pigtails. It came out pretty

Justin's manual has a similar table in it, but not the wire lengths. Because the BPF's use the smaller wire, the wire length in Kit and Parts should be very close to what you need. For example, L091

Jack Is there a similar sheet for BPF's LPF sheet is working out great Tim W4YN

Hi Jack I had a look at the file posted on 7/15/21 but its the same file as I already have downloaded. AT.h has no reference to "struct grafix" I can't see it mentioned anywhere in the code. Anyway I

I have not done all the bands but those match closely with what I have done. I also do not see much change messing around with turns spacing. On to LPF's to see how they come out. Tnx for all the work

I’ve made these changes to the assembly manual and the BOM for the BPF… Looks very good. The loss looks like about 3db maximum and that is easily made up by the RF amp in the front end. Also, that

These are great, Oliver. If it's okay with you, could you send me the hi-rez versions of the graphs? Al and I would like to include them in the book. BTW, I tweaked the toroids in the LPF board to