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Re: VFO Encoder Tuning Stops
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
By jjpurdum · #678 ·
Re: VFO Encoder Tuning Stops [1 Attachment]
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
By Dennis Kidder W6DQ · #677 ·
Re: VFO Encoder Tuning Stops
Thanks for the email...it's sincerely appreciated. I should also thank a bunch of other readers, as the QST article won the Cover Plaque Award for the best article in that issue. It's a nice repro of
By jjpurdum · #676 ·
Re: VFO Encoder Tuning Stops
Thanks Jack!? Boy, this is a lot of "kool" stuff you are doing!? I sent a letter via email,?just now,?to ARRL,?praising your 49-er/VFO article and this forum!? Let's see if it makes the pages of
By Karl Schwab <ktschwab@...> · #675 ·
Re: VFO Encoder Tuning Stops
On the inexpensive KY-040 encoder, the power and ground leads are clearly marked and the center lead is to the switch. The two remaining pins are the clock and data leads. Just reverse those.? BTW, I
By jjpurdum · #674 ·
Re: Getting help with programing the 49-er VFO project
Me too!? I could not have done it without them!? de Karl, KO8S
By Karl Schwab <ktschwab@...> · #673 ·
Re: VFO Encoder Tuning Stops
Hello Dave; In reading your post on reversing the leads of the encoder to reverse tuning; which leads would I reverse to accomplish this seeing that there are 5 of them? Thanks, Karl, KO8S
By ktschwab@... · #672 ·
Re: Getting help with programing the 49-er VFO project
I like the way this group helps one another...good stuff! 73,Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Wednesday, August 10, 2016 11:42 PM Subject: Re:
By jjpurdum · #670 ·
Re: 49er problems
Hi Bobbie: It really is surprising how well the rig works, given its cost. I did manage to smoke a final transistor during a "key down" test, but I was running 13.8V from my large xcvr supply. I made
By jjpurdum · #671 ·
Re: 49er problems
Thanks Jack I replaced the nano and DDS boards from the working unit to the non-working unit, and still does not work.. I checked the transistors with an on-board transistor tester and it shows two
By bob johnson · #669 ·
Re: Getting help with programing the 49-er VFO project
Hi Jim I would like to hve the scope.. how to contact you directly? bobbie kd4lv bob4john@windstream dot net
By bob johnson · #668 ·
Re: Getting help with programing the 49-er VFO project
Karl, I put a very small series resistor in the D882 emitter leg to calm it down. Still getting 2.5wts out into the dummy load. I also put a good chunk of aluminium for a heat sink on the D882s
By James Davison · #667 ·
Re: Getting help with programing the 49-er VFO project
Thanks Jim for the encouraging words!? Until the 49-er/VFO article appeared in QST, I had never heard of a "sketch" either!? I had heard of the Arduino, but I just assumed that this was some kind of
By Karl Schwab <ktschwab@...> · #666 ·
Re: Getting help with programing the 49-er VFO project
Hi Jack, No, 200-300mV p-p is the data sheet specified input signal amlitude pin 6 of the NE612 wants to see from the external VFO, in this case, the Nano DDS VFO output. Afterall, the output of the
By James Davison · #665 ·
Re: Getting help with programing the 49-er VFO project
See below: Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Wednesday, August 10, 2016 11:33 AM Subject: [SoftwareControlledHamRadio] Re: Getting help with programing the 49-er VFO
By jjpurdum · #664 ·
Re: Getting help with programing the 49-er VFO project
Hi Karl, I too, had never dealt with Arduino programs, (what's this 'sketch' stuff anyway?! ;) Jack helped me with that and I was able to upload and even change the the program to zero the DDS VFO
By James Davison · #663 ·
Re: 49er problems
Bob: As you know, I'm a software guy, but given what you've detailed, it sure sounds like a bad DDS board. If you socketed the DDS board on the two rigs, swap out the boards and see if the "good" rig
By jjpurdum · #662 ·
49er problems
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
By bob johnson · #661 ·
Re: Getting help with programing the 49-er VFO project
Hi Karl: Glad that someone jumped in to help you. Unfortunately, the Arduino Integrated Development Environment (IDE) has to follow a fairly strict disk layout for the compiler to find what it needs
By jjpurdum · #660 ·
Getting help with programing the 49-er VFO project
Some posts back to this forum, I posted a topic indicating I needed help programing my Arduino Nano with the required files for this 49-er VFO project. This requirement, had me baffled! Setting up
By ktschwab@... · #659 ·