I've been asking about this my self. In the code is function button for different modes and functions. One is CW mode which requires the external use of a transistor to hold PTT for a bit while cw code in sent. Then after a bit it times out, unkeying the PTT.?

That's what I understood from reading the comments in the code. It seems to me if you can put the sound of your CW tone on a certain frequency by an offset so it can be heard by another on that frequency and you can hear them, then you are doing CW.

But the others don't think it's that simple. And I haven't tried it yet. I lost a month of experimentation, and traded it for a month of troubleshooting and repair, just to play with it now.

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Once again I was beaten to the punch. Rubbing alcohol surface tension sucks it around and under the hot glue which is just stuck on the surface of the object. It could also be used to get the glue out of carpet or fabric as long as you didn't smear it in and around the fibers. For smoother objects like we are talking about here, apply some rubbing alcohol without making a mess and just wiggle it. It will suck in under the glue breaking the surface bond. And you could probably get it off the wound toroid too. And wood.

It has also been recommended to glue the center toroid of the analog BITX for drift stability. Among other fixes for that too.

Another product that may work is Zinc-Rich Cold Galvanizing Compound spray used by welders. The spray-can I have says it is 97% pure zinc, see: . After making all cutouts and holes, the inside of the plastic enclosure could be sprayed with this product (the plastic would probably need to be well cleaned before spraying).

I ordered a Raduino from HfSigs, and wonder if there are other resources? I'd like to see other uses, schematics, and sketches. I searched this group and didn't see anything, so if I missed something, sorry.

73, TIA: Charlie K?TAN

Jack, what would you recommend as a resource for learning programming an Arduino for someone who knows programming principal, but does not know the specific things for Arduino?

I have 3 decades of programming experience but 95% is Pascal and SQL (I do this for a living). Very basic C knowledge though.

When I look at the Raduino sketch, I understand what's going on and I am able to make some changes, but I miss some knowledge of the basic concept to make a sketch from scratch that goes beyond "hello world".

Good indeed. ?I'll be reading it myself, as am new to this world of Arduino.

Jerry, KE7ER

Has anyone built and used the Analog Devices SSM2165-1 voice compressor circuit from AD5X that can be used for dynamic or electret mics. Links for the pdf's are: ? and? .? Looks like it would be simple to add to the BITX40 for more TX audio punch. The author states that the gain is set for unity, so it may need a way of adjusting for a small amount of gain if needed.

I would like to add my request for a wiki. I am new to the BitX world. After I finish setting up the board as delivered, I'd like to start doing mods and upgrades. Unfortunately I am completely overwhelmed by the unorganized pile of stuff here. I know there are gems in it somewhere but I have no idea how to find them. Sorting through hundreds of directories looking for interesting projects or "must have" mods just isn't a viable option, even if I did have a clue as to what I might do first.?

Rather than add to the growing pile of plaintive "what do I do now" posts on this board, I'd like to be able to find stuff myself. Then I can ask intelligent questions. Right now? Not really possible. ?Thx and 73 de Bill K7WXW

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