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Also, adding the Spot/Fine Tune button lets you tune in 1 Hz steps. Even when covering a 300 KHz span, the Fine Tune button makes it easy to tune the BITX.

Zero is probably a good value for now: ? ??/g/BITX20/message/24738 ( /g/BITX20/message/24738 ) You don't want to just copy that uBitx schematic and expect it to

Great! By how much did you have to reduce the value? Was 9999 ok, or did you need to go lower? 73 Allard PE1NWL

I am planning on building a uBITX and as I was going through the schematic I noticed that C241 & C245 are labeled 0. is there a proper value for them? Art KB8HGW

What GPS engine did you use?? Where can I get one for $6.95?? ?The GPS device listed in the QEX article costs a lot more.? Definitely interested in duplicating this.?? Thanks Greg KD4VV

It works! Thanks. Now I just have to determine the optimum value. I guess that is what I get for getting a good deal on ebay. I'm gradually learning how the code works. 73 Brent

Hi Brent, an alternative way to fix your problem is perhaps the following change. Normally, when the pot is at its upper limit, the 'knob' value should read 10000. Fast tuning will normally start when

Thanks a lot! Looks really interesting.

Hi I think you made a mistake in labeling the filter at the input of the receiver section. It is a BPF not an LPF Regards Lawrernce

Would changing the value in line 1943 to something less than 10000 help?

Hi again Allard I tried making those changes, no luck. Changing the values does extend the tuning range, depending on what value I put in (eg? I can get the radio to tune to 7105 instead of 7100),

Goran VE6GPO wrote... Looks great, but nitpicking a bit, isn't the filter over on the left actually a bandpass filter and not a low pass filter? -- 73 Keith VE7GDH

Thanks I'll let you know how I make out 73 Brent

Another idea, which you may have already implemented: Different builders will have different size and placement of the two touch pads, and thus different capacitance when not being used. Also, some

Hi Jerry, Thanks for this idea. I haven't considered that option. When I have some time I'll try it out to see if it would work. If so it could save us one I/O pin! 73 Allard PE1NWL

Goran, Thank you !! 73, Dale K9NN Sent: Tuesday, October 03, 2017 7:46 PM To: [email protected] Subject: Re: [BITX20] BITx40 Block Diagram ? Last spring I did the same for the DX section of VE6AO.

sorry should be line 1831, not 1838

Hi Brent, OK, now I understand. In v1.24, at line 1838: knob = knob * 10000L / 10230L; // scale the knob range down to 0-10,000 change to: knob = knob * 10001L / 10230L; // scale the knob range down

Hi Allard Sorry for the confusion. What I mean is that there seems to be some resistance left in the pot when you reach the stop at the upper frequency end, so the voltage on the wiper of the pot

Last spring I did the same for the DX section of VE6AO. Created a block diagram in Visio. Here's the picture: Hope this helps. 73, Goran VE6GPO