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Re: Looking to gather the parts
I'll be the fat old guy with a name tag that has "Jack Purdum" on it!! ?I may be wearing my favorite Tee shirt: ? ?There are 10 types of people in the world:? ? ? Those who understand binary?
By jjpurdum · #292 ·
Re: Where to purchase a enclosure for my DDS/VFO 49'er?
I bought the enclosure from Amazon, but they no longer carry it. My future projects will use on of these: Catch All Acrylic Boxes ($9.95-$23.21) | | | | | | | | | | | Catch All Acrylic Boxes
By jjpurdum · #291 ·
Re: Looking to gather the parts
Thanks Jack! Good info on the page and I ordered a PCB kit. Now just need to find the other parts. I should see you at FDIM. I've signed up for all the activities. I'll be the older pudgy, grey haired
By Dave Redfearn, N4ELM · #290 ·
Re: post the article to Files section?
Brian, Go check out the web page at: DDS VFO Kits http://www.farrukhzia.com/k2zia/ http://www.farrukhzia.com/k2zia/ DDS VFO Kits http://www.farrukhzia.com/k2zia/ Nano DDS VFO Rev_2 (3 30 MHz) by
By Dave Redfearn, N4ELM · #289 ·
Where to purchase a enclosure for my DDS/VFO 49'er?
Who has found a good source for enclosures? Any solid color ones with cutout/s for the Display? I'd like to purchase an enclosure for my DDS/VFO 49'er similar to the one in the QST article, but a bit
By hdskullfire2@... · #288 ·
Re: Looking to gather the parts
Hi Dave: If you want to use a PCB, Farrukh is selling them at a pretty good price: DDS VFO Kits | | | DDS VFO Kits | | | I'll be at the FDIM conference...perhaps we can have an eyeball QSO then. Jack,
By jjpurdum · #287 ·
Looking to gather the parts
I read the QST article and while it looks like a good project to learn about controlling DDSs with Arduinos, I was not too impressed with the RF part. My plan is to get all the DDS & Arduino & LCD &
By Dave Redfearn, N4ELM · #286 ·
Re: 49'er - Power supply voltage vs Wattage out??
It's all in the antenna. Amen to that! I honestly believe that, dollar-for-dollar, putting cash into the antenna usually pays bigger dividends than almost anything else. As to me, I have a crappy
By jjpurdum · #285 ·
Re: 49'er - Power supply voltage vs Wattage out??
Thanks Jack, I'm not planning on running it higher. If I can get 1.8W out of it I'm OK with that. I just wondering why the wattage levels vary so much.. In my case I got the 1.8W into both a dummy
By hdskullfire2@... · #284 ·
Re: 49'er - Power supply voltage vs Wattage out??
I ran my 49-er at 11.5 volts accidentally and destroyed the original D882. Up until it smoked, I was getting around 5-6 volts out. When I replaced the D882 and adjusted the output of R1, I'm now
By Aaron Heverin <aaronhev@...> · #283 ·
Re: post the article to Files section?
Yes, and my county library system will absolutely not copy any type of copyrighted material and has warnings posted at the self use copy machines not to use them to copy copyrighted material. Dave,
By dfine01 · #281 ·
Re: post the article to Files section?
The ARRL has the copyright to the articles it publishes. You might try to write them as see what kind of response you get. Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Saturday,
By jjpurdum · #280 ·
Re: post the article to Files section?
One of the authors had a note on his web page that he was going to make a full kit available , I haven't checked recently to see if it is available. The items required are not available from places
By W5COV <cvest@...> · #279 ·
Re: 49'er - Power supply voltage vs Wattage out??
I'm not sure it's worth the gain to ramp the voltage above 12V. Running 1.8W versus 3W probably isn't going to make much difference, but I think running at 13.8V runs a real risk of smoking the final.
By jjpurdum · #282 ·
49'er - Power supply voltage vs Wattage out??
I have a general question.. Right now my 49'er with the DDS-VFO is managing 1.65-1.8 watts out as shown on my LP-100A and going into into a tuned doublet. I don't have a heat sink on the D882 at this
By hdskullfire2@... · #278 ·
Re: post the article to Files section?
I would think copyright issues would preclude posting the article in the files section....unless, of course ARRL grants permission. I seem to recall that at one time one could order article reprints
By Lee Hiers · #277 ·
Re: What value did you use for R2 ???
Mine came with the 220K as well.. Steve NS3L
By hdskullfire2@... · #275 ·
Re: What value did you use for R2 ???
Hi Dave and Arron Hummm Ro 10K and tied to the input pin 3¡­.I just looked at mine and its not there. Of course the kits we¡¯re getting now are a far cry from the original NorCal 49¡¯er. I found
By kc1at · #274 ·
Two issues with my 49'er - Spurious Oscillation & No LED action on the AD9850 board
Anyone else discover that the Forty-9'er is transmitting a "spurious" oscillation, in searching the web I found some comments discussing the issue. It seems that the local oscillator is constantly
By ns3l@... · #273 ·
Re: What value did you use for R2 ???
Don, I had a 220k provided with my 49-er kit... and I have to admit that I never considered this as an issue for the audio "problems" that have been popping up. Thanks for bringing it up. What really
By AaronHev <aaronhev@...> · #272 ·