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Aaron: Once again, I'm the software guy, not the one who designed the board; that was done by Farrukh and he is better able to answer these types of questions. That said, I do know that the pots can

Jack, and all... As you know, I'm in the process of putting together a very detailed construction manual for the radio which will be handed out to everyone who takes on the project as part of the

Norbert, One test I did make was to disconnect the speaker, plug in the headphones, and pull the DDS board and check for hiss. It was still there. The I pulled the oscillator chip - U2 (LM 602) and

You've been writing about this for over a week. Have you tried what has been suggested (i.e., replacing the LM386, checking the transistors, etc.)? Have you tried different sets of headphones rather

Hi! I played with the radio for a while yesterday and I'm having some difficulty copying other stations. I hear them very low, like "far away" , fainting. I'm noticing a lot of the "hiss" noise that

Thanks for the quick reply Jack. Guess I must have missed that file.? I think I have enough parts in the junk box to put one together.? I'll let you know the results.Dave, W0DF

There are photos of a BCI filter that should work with the Forty-9er posted on this site along with the values. It will be less expensive to make, since the CQ article is for 100W and uses hand-wound

Hola! Dennis and Jack, I was able to fix the "increments" issue with the new code from Jack. I ended up using the file named TempVFOCode.ino and I replaced the rotary.h and rotary.cpp (lower case) in

Jack, Is there a schematic/parts list available for the BCI filter available yet, or are you waiting for the article to appear in CQ (which month??)? I just let my subscription expire and will have to

Norbert, Were you able to figure out the issue you were having with receiving stations and the fact they sounded "far away?" I'm not sure how the individual parts in your 49-er kit were put into the

See my last post. If you downloaded the rotary file from the website listed in the vfo sketch, the increment function will NOT work. Get the rotary files that Jack posted a few days ago and that will

SUCCESS AT LAST!!!!!! After weeks of trying to figure out what I did wrong, my DDS VFO is working flawlessly and the increment problem has been solved. I replaced the rotary files downloaded from

OK guys, I managed to put everything together and so far is looking good. It powered up fine, so far I'm noticing that the encoder "step" function is not working when I push it down. It does move up

Am having some success making contacts with the 49-er transceiver this evening due to the SKCC Weekend Sprint contest going on at the moment. Just to clarify the setup on this end, the 49-er is taking

My apologies to the group. It appears this thread has be hijacked to continue the discussion about the hiss issue I'm having with my 49-er. I have some additional information but I'll put it out on

Thanks, Dave. Well... that's exactly what I'm using - a 12 volt gel cell. Heavy bugger but it's working great. The radio itself is working perfectly. The rotary encoder is tuning as it should. 40m is

Aaron,? I am using a 12 volt gel cell battery to power my 49er and I'm using Yamaha CM-500 headphones.? I don't know if the earbuds would make a difference or not, but as Jack just said, wall warts

Sorry... forgot to answer that question. I'm using a 12v, 8aH battery. It's the same one I use when I take my other rigs portable. Aaron - N2HTL On Sat, Apr 9, 2016 at 10:32 PM, Jack Purdum

I'll second Jack's recommendation on the Radio Shack solder.? That is all I use on circuit boards.? It is great stuff.? If I ever run out, I may have to quit the hobby. Dave. W0DF

I have a Jetstream 30A power supply with adjustable output voltage. I run it at 13.8V for my 100W rig, but 12V for my Forty-9er. Wall warts can be very noisy and so can some cheap 12V supplies. If you