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Is the mike the small round can like a transistor, but with no leads ? If so, I have one. I was handed this kit by the guy who bought it. -- Jim/N4AAB

Jack, Thanks for the info. We certainly appreciate your skills and determination you and your partner are putting towards this project. From the user end ,its all about tackling one at a time and

The mike should be there. It is a small part slightly bigger than a watch battery and needs to have leads soldered to it. As to the speaker, it must be8 ohms. v/r Fred W4JLE

Some of your encoder questions are answered in the manual. The resistor isn't needed as I use the pull-ups in the MEGA. The 0.1uF caps are for debouncing. They probably are not needed either. If you

Jack, Got the board together , all aligned and tested - voltages good. ? Loaded the sketch - Display looks fine. Tuned the VFO and display frequency moves. *Some observations / issues are* : Every

You should have an electret mic cartridge and a NO push button switch in your parts. Attached is an article I wrote for QRP Quarterly that describes how I built a mic from those parts. Jack, W8TEE

Hi all, I'm new to the group, and just built my BitX this weekend. I found that the 3.5 mm audio jack that came with the kit can be wired so that it uses a speaker, unless headphones are plugged in.

All: I've just uploaded Release 2 of the B40 assembly manual, B40AssemblyManual02.doc . This pertains to adding/using the modifications I've added to my BITX40, mainly via the PCB that I'm using. It

Hi Dexter, My friend took the circuit diagram to staples and they printed the file from his thumb drive perfectly clear, in color ?about 16x 30 for $ 3.00 each - heavy paper What a difference. ?For

I'm using a small 2" speaker without issues. However, I think a headset is the way to go unless you're demonstrating the unit. Jack, W8TEE To: [email protected] Sent: Sunday, July 9, 2017 10:48 AM

I would be interested in a parts list as well. At our last club meeting one of the new hams said the Bitx40 kit was over his head and he asked if someone else could complete it. So I volunteered. I

Never mind! I found it this morning the answer is in message #21519 ( /g/BITX20/message/21519 ) . It seems like there are a lot of threads about the VU2ESE AGC circuit. Is there a

Yes, I'm getting 12V to the drain when The PTT is pressed

Thanks, folks. I have the info I needed. Heard first sigs in amongst a pile of static, so progress is being made. Just investigated how to wire the second supplied 3.5mm socket for the mic in a basic

I'm confused too. I can't seem to find the version of the schematic that you referenced; still trying to find my way around here! So much to digest! I thought I read somewhere that the red wire from

I had converted the same sch into B&W and here it is. -- Regards Sarma

Before you yank out the IRF, do this check: Power the board and final, disconnect MIC and with PTT pressed check if 12V is getting to the IRF drain.

I totally agree with ekelly. I have had almost exactly the same experience with lifting a trace from the top of the board while focusing on the bottom of the board where the solder pads are. The

I have some IF510's on order. I hope that's the problem because it will be an easy fix. It's worth a shot.? I've never tried transmitting with this radio without a dummy load attached.

IRF510 - A tip for those replacing the transistor. Don't try to remove it with a solder sucker. The pins fit too tightly into the circuit board and unless you have a way of heating all three pins at