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ok I have built my radio kit and the dds vfo and when I power it up everything looks good. I can get the display to change the frequency and when I key it make a nice sound a bit loud but nice sound. problem is I am not getting any signal into or out of radio. I took it to one of my elmers just to check the output frequency and there was none and no signal was herd. I have been back through board and looked for solder bridges and check the correct orentiation of the diodes and Capacitors and also looked for cold solder joints. I am not seeing anything that looks to be wrong. I did have the filter that we had to make up for the receive in opposite from the picture but I have fixed that and still nothing. any help would be appereciated. Thanks Nathan K7NDM

Gentlemen: With the hardware all connected, I powered up the Arduino from my computers USB port, and the LED on both the Arduino and DDS board lit up as well as the blank (16 square segments only) liquid crystal display. I then uploaded the "Blink" sketch, and the LED on the Arduino blinked away. I then uploaded the Liquid Crystal sketch with no change. I then looked for the Rotary.zip file and I was not able to find that in my downloads, so I suspect, I have done something wrong in downloading both of these files. I will have to confess; downloading software and getting it running is new to me! The hardware part of this project, I feel that I have done pretty good at. So gentlemen; what steps can I take to go on from here? Thank you all in advance, de Karl, KO8S

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the SoftwareControlledHamRadio group. File : /VFOControlProgram.ino Uploaded by : jjpurdum <jjpurdum@...> Description : Main control program for VFO in Chapter 16 You can access this file at the URL: https://groups.yahoo.com/neo/groups/SoftwareControlledHamRadio/files/VFOControlProgram.ino To learn more about file sharing for your group, please visit: https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398 Regards, jjpurdum <jjpurdum@...>

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the SoftwareControlledHamRadio group. File : /W6DQ_DDS_VFO.cpp Uploaded by : jjpurdum <jjpurdum@...> Description : The C++ library file for the VFO, Chapter 16 You can access this file at the URL: https://groups.yahoo.com/neo/groups/SoftwareControlledHamRadio/files/W6DQ_DDS_VFO.cpp To learn more about file sharing for your group, please visit: https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398 Regards, jjpurdum <jjpurdum@...>

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the SoftwareControlledHamRadio group. File : /W6DQ_DDS_VFO.h Uploaded by : jjpurdum <jjpurdum@...> Description : The header file for the VFO, Chapter 16. You can access this file at the URL: https://groups.yahoo.com/neo/groups/SoftwareControlledHamRadio/files/W6DQ_DDS_VFO.h To learn more about file sharing for your group, please visit: https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398 Regards, jjpurdum <jjpurdum@...>

A reviewer of our Arduino Projects for Amateur Radio gave us a horrible rating on Amazon. I know some of you have read the book and the fact that you're a member here suggests you might disagree. The DDS file he's says is missing from the download is missing...he's correct in that. However, rather than trying to contact Dennis, me, or the publisher, he just wrote the negative review. In several of his posts, he is implying that Dennis and I never built the projects in the book, including the Forty-9er project in QST. I tried to point out that I am accessible to help, but he wants no part of it. If any of you have the time or inclination, could you write a comment saying that I am accessible and that the VFO does work? Such thing can destroy the book's sales, which aren't that great anyway because of so many illegal download sites. At this point, however, it just a matter of principle now. Thanks! 73, Jack, W8TEE

Hi all.. I built two of the QST version of the 49er by Jack et al .. the first one wroks great, the second one will not transmit and there is no sidetone. The display looks correct and the rotor changes freq on the display just fine. I have changed the nano and the AD9850 board, still same problem. I have tested all components in circuit and cannot find anything wrong.. All voltages look good and there is no smoke.... I have disconnected the transceiver board and testing the VFO. The output freq is very erratic and usually settles at about 312 MHz. but with no measurable output power, just enough signal to make my freq counter crazy... I would very much like to use the VFO as a freq generator, but after several days, no joy... Please help bob kd4lv

Finally got the DDS VFO software sketch to work (changed sketch line LiquidCrystal_I2C to reflect LCD serial address 0x3F). VFO is now outputting a strong, clean 7 MHz sine to scope. Problem: I now notice that the KY-040 encoder initially tunes up/down for a few changes and then locks up and fails to tune. The encoder tuning increment switch works OK. I have bypassed both encoder CLK & DT pins to ground with 0.1 uf monos. Re-powering unit or rebooting nano gives the same scenario. I changed out the KY-040...same result. Encoder contact bounce related??? I also notice the encoder tunes backwards...CW down and CCW up frequency. Anyone have any ideas? Don / N5DM

Jack, You nailed it! This is such a great group, with really great members. I also want to express my thanks to the group for receiving the QST Cover Plaque. I appreciate YOUR comments about my role in our book. The way I see it though, I don't think either of us could have done it on our own. Synergism! 73, -dennis W6DQ Inyokern CA

Absolutely! I've often said I have enough EE knowledge to be dangerous. I know all three of us are tickled by the number of people who have taken the time to build the Forty-9er. For those who don't know, the rig was the original brainchild of Doug Hendricks (YouKits) and Wayne Burdick (Elecraft) and, I think, was a kit distributed by the NorCal computer group. Just another case of standing on the shoulders of those who preceded you. Anyway, if you're doing stuff with microcontrollers, share you work with us. I know it will be appreciated. 73, Jack, W8TEE

I would guess by September of this year, most of the 49-er/VFO radios that were built from March QST of this year, would be on the air by now, or will be very shortly, and will be ready for their first contest! The original 49-er xcvr would not work very well, because it only has a single frequency. But our new one, the 49-er/VFO, can now move about the 40 meter CW portion of our band, very nicely! The contest that I have in mind, is sponsored by the North Georgia QRP Club; they call it, Peanut Power QRP Sprint. It will be held on Sunday, September 25, 2000Z to 2200Z. Yes, you read the time correctly; only 2 hours long with very minimum impact on your family life! This is what makes it so "kool"! It is held on two other bands and modes as well, but, we only care about CW on 40 meters, 7061 kHz and above for this contest. They even have some different catagories too. But, you will need a Peanut Power Number, or, PPN number; it is free, but you must contact them to get it; I have mine, it is #136. Plaques will even be awarded to category winners, but really now, who of us really cares about that stuff? I just want to put this thing on the air, and see what it will do! But if we were to get a plaque; we could hang it on the wall the way Jack did with his plaque from the ARRL! I attached a PDF scan that will give you all of the information that I believe you will need. Hope to see you all the air with this new rig, passing out your PPN number! Gud Luc, 73, de Karl, KO8S, PPN 136

My ATTiny85 runs the Blink example to flash an LED across pins 4 and 5. But the Keyer code does not work for me to detect capacitance on pins 0 and 2 in the keyer circuit. I changed OUTPUTPIN from 4 to 1, and it still does not detect dits or dahs. Is there a newer version of the code than Chapter 8 Rev 4? Thanks, Bob KF6ABC Mix

I have ordered and received a couple of KY-040 encoders expecting to get the ones that are threaded to take a nut and getting ones that are unthreaded. The vendors have been nice about refunding money but I really need a encoder threaded and with a mounting nut. Anyone know of a source or want to trade for an unthreaded encoder? Thanks! Dave, N4ELM

Here's 10 encoders for less than $5 including shipping (search: 121993737161): Of course, these are from China, so you'd have to wait a while. Jack, W8TEE

I have quite successfully used these encoders from China and by carefully dismantling have been able to remove a tiny ball bearing to end up with a smoothly turning frequency controller for my SDR (no detents). Must admit though not as free running as this optical encoder :- http://www.ebay.co.uk/itm/Rotary-Encoder-400P-R-6mm-Incremental-Optical-Shaft-Working-Measurement-5-24V-/171640123948?hash=item27f68c722c:g:90sAAOSwHmhV8Te8 Rotary Encoder 400P/R 6mm Incremental Optical Shaft Working Measurement 5-24V www.ebay.co.uk Rotary Encoder 400P/R 6mm Incremental Optical Shaft Working Measurement 5-24V in Business, Office & Industrial, Automation, Motors & Drives, Sensors | eBay This encoder needed a voltage source greater than 5V so I added a series 1.5V AA cell, the output pulses had to be divided down in the sketch to give an acceptable tuning rate and the end result is a tuning control that when fitted with a weighted knob can be spun freely like a SW receiver of old.

A number of readers of the QST article wrote and asked where I got the acrylic case. Alas, Amazon is no longer carrying the case and I could not find a supplier who would sell in less than quantity 10. Well, yesterday I found virtually the same case at the Container Store, a chain with stores all over the country. They seem to have two sizes, and both have a hinged lid, which I like, as it makes it easy to get in the case, yet the display is protected from the elements. True, the lid can flop open pretty easily, but I found some pinhead-sized rare earth magnets online. By countersinking and aligning two of these magnets and gluing them in place, the lid stays shut but without a "visible" latching mechanism. BTW: I made a flat-forehead mistake doing this. On my first try, I forgot that like poles on a magnet repel. End result: a magical floating lid for the case! Anyway, go to their web site (containerstore.com) or try: http://www.containerstore.com/s/acrylic-square-hinged-lid-box/d?productId=10031027&q=acrylic%20hinged%20lid The cost is about $9 for the small one (6x6x2) and $19 for the large one (12x12x2). I'll be getting one of the smaller ones for the antenna analyzer project and will let you know about it. Jack, W8TEE

I thought about how to power the transceiver and found a nice solution that probably others have seen but perhaps not pointed out. There is a cable for sale on eBay that contains the electronics to go from usb to 12 volts and I picked one up for $1.68. It is rated at 750 ma and the current drawn by mine in the receive mode is 142 ma. I have not tested the draw when transmitting but if it does 3 watts like the construction article states, that would take the draw up by 250 ma for what would be a total of about 300 ma., well under the rated power. With this, my battery problem is simple. If you want to look at the cord, search for USB DC 5V to DC 12V Step-up Module Converter 2.1x5.5mm Male Connector WB6TOU

My receiver works, but the transmitter just sends a clicking sound. What VPP should I see on J6 from J3? What is the procedure for tracing this problem? Bob KF6ABC Mix

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the SoftwareControlledHamRadio group. File : /VfoSourceRev6WithKeyer.ino Uploaded by : arduino93111 <chuckhobin@...> Description : A simple example of adding a keyer to the VFO source code. You can access this file at the URL: https://groups.yahoo.com/neo/groups/SoftwareControlledHamRadio/files/VfoSourceRev6WithKeyer.ino To learn more about file sharing for your group, please visit: https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398 Regards, arduino93111 <chuckhobin@...>

I am in the process of putting parts on the board and noticed that there is an extra resistor on the ver2.1 board next to the C8 capacitor. The board indicates it to be a 1Meg. I have not been able to find a schematic for this version of the board. Everything else seems to be identical. I am looking for any information anyone may have about this difference? Also is anyone using a value other than 1meg for R2? Thanks for the help!