Hello everyone! I would like to share with you some informations, I installed a new Inverted V antenna for 20m and I discovered that my uBitx is transmitting some "shadow" signal along the center frequency. I can't remember seeing this before, when I was using a zig-zag dipole. This is not happening in LSB. Does anyone know what is this if can be somehow corrected ?  Picture attached. Thanks!
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Re: upgrade firmware 0.20 to 3 or 4
here? some pics...? for? your help.?? tnx in advance? danilo in3izq
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Re: Inexpensive eBay Amplifier Kits
Paul, my concern with anything setup for 13.56MHz is the bias levels for the amp, simply because there are no applications I am aware of that call for linear operation in that ISM band!
-Justin N2TOH??
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Re: Inexpensive eBay Amplifier Kits
Lee, I've been retired 10 years now, all I do is climb the walls looking for stuff to do!?
-Justin N2TOH?
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Re: Antuino - the antenna analyzer
They were selling the fully assembled Antuinos for $80 at FDIM.
=Vic=
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Re: upgrade firmware 0.20 to 3 or 4
Upload? a crisp photo on the internal main board. ?let us see. ?
On Sat, May 18, 2019 at 2:01 PM danilo datres < in3izq@...> wrote: hello,? i'm?? in3izq danilo? from? italy. Have? buy? by friend? an? ubitx? , when i? on?? her look? at display ubitx? 0.20.
can i? upgrade at? version?? 3? or? 4 ?? are a newbie and?? work? a little?? with? software.?? Any? help are?? welcome.
best? '73? from? me. danilo in3izq
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upgrade firmware 0.20 to 3 or 4
hello,? i'm?? in3izq danilo? from? italy. Have? buy? by friend? an? ubitx? , when i? on?? her look? at display ubitx? 0.20.
can i? upgrade at? version?? 3? or? 4 ?? are a newbie and?? work? a little?? with? software.?? Any? help are?? welcome.
best? '73? from? me. danilo in3izq
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Re: Antuino - the antenna analyzer
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Re: Antuino - the antenna analyzer
Obvious that only Farhan can bring out the price at the due time
On Sat, May 18, 2019 at 11:18 AM Ian vk2ama < ieand@...> wrote: I see the Antuino was officially released at FDIM. Anyone know how much it will be to the rest of us?
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Re: Antuino - the antenna analyzer
I see the Antuino was officially released at FDIM. Anyone know how much it will be to the rest of us?
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Update:? it works now.? The problem was a cold solder joint on the batt(-) pin of the barrel connector.? ?I should have looked more closely before posting!
Bruce ?
On Fri, May 17, 2019 at 7:05 PM Bruce Hall < bhall66@...> wrote: Farhan,
The unit I received at FDIM works fine with Vcc from the barrel jack, but not from the battery pack.? ?
Peeking at the PCB, the power circuit has changed from the schematic you posted on Dec 27th:? there are polarity protection diodes for each input now.? But it looks like batt(-) erroneously goes to the barrel jack instead of ground.? Would you mind checking it?? ?Should I cut this trace and add a wire to ground?? Or is there a better method?
- Bruce ?
On Fri, May 17, 2019 at 6:30 PM Ashhar Farhan < farhanbox@...> wrote: I am building up the info on . there is a place holdrr page for it already. - f
On Fri 17 May, 2019, 3:33 PM Jack Purdum via Groups.Io, <jjpurdum= [email protected]> wrote: It's his spectrum analyzer. I don't understand what Curt's PO'ed about? He's free to attend FDIM.
Jack, W8TEE
And what "unit" pray tell are we talking about here?
Roy WA0YMH On Thu, May 16, 2019, 9:12 PM David Wilcox via Groups.Io <Djwilcox01= [email protected]> wrote: Farhan,
I heard your lecture at FDIM and purchased one of the units but need instruction in how to use it.? Github only has the upgraded code files.? Please advise.
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Jack
No I was merely be philosophical and maybe slightly trivial. In spite of my call Dayton is about 10 hours away by car, but I should consider making the trip. Nice there are wares to consider,? perhaps a bunch of Jackals were sold. I honestly need bench time more than a trip.
Bruce may solve whatever it is rather soon. Sounds like a real nice instrument Farhan and his friends have provided. Safe travels everyone.
Curt
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This is right where I'm at now. Sooooo many configuration tips and absolutely none of them are the same. I especially loved the one about setting BFO by tuning to static till it sounded "good". ?
Also took me a while to finally realize that even though the config menu options are the same using CEC firmware, they work NOTHING like the factory setup. Finding a partially written manual for CEC clued me in. Using WWV is a great idea, except I live a stones throw from it and WWV is very much NOT NVIS. Gave me an excuse to finally order a proper signal generator.
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There was so much trial, error, fumble, confusion and general stupidity in my process that it is a model of what not to do.?
I distill till the process:
1) express the 10mhz ?freq error as a percent delta
2) apply that percent delta to the weird calibration number in memory manager, reboot
3) remeasure the error (a) if close enough to step 4, (b) if still to far off go to step 1
4) run WSJT-X freq calibration process and apply proposed adjustments
5) if your WSPRnet spots still work at all, consider yourself lucky, if you get lots more spots consider yourself very lucky.
This process took me hours and hours to develop and implement. ?I recall reading about this exact process in one of my late night uBITX reading deep dives. ?But I didn't just implement it. No, I had to invent it on my own at great expense. ?
So as usual, I have discovered what others have known all along.?
Don
km4udx
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Farhan,
I just saw your updated schematic on github.? ?Maybe the only issue is a faulty barrel connector.
- Bruce
On Fri, May 17, 2019 at 7:05 PM Bruce Hall via Groups.Io <bhall66= [email protected]> wrote: Farhan,
The unit I received at FDIM works fine with Vcc from the barrel jack, but not from the battery pack.? ?
Peeking at the PCB, the power circuit has changed from the schematic you posted on Dec 27th:? there are polarity protection diodes for each input now.? But it looks like batt(-) erroneously goes to the barrel jack instead of ground.? Would you mind checking it?? ?Should I cut this trace and add a wire to ground?? Or is there a better method?
- Bruce ?
On Fri, May 17, 2019 at 6:30 PM Ashhar Farhan < farhanbox@...> wrote: I am building up the info on . there is a place holdrr page for it already. - f
On Fri 17 May, 2019, 3:33 PM Jack Purdum via Groups.Io, <jjpurdum= [email protected]> wrote: It's his spectrum analyzer. I don't understand what Curt's PO'ed about? He's free to attend FDIM.
Jack, W8TEE
And what "unit" pray tell are we talking about here?
Roy WA0YMH On Thu, May 16, 2019, 9:12 PM David Wilcox via Groups.Io <Djwilcox01= [email protected]> wrote: Farhan,
I heard your lecture at FDIM and purchased one of the units but need instruction in how to use it.? Github only has the upgraded code files.? Please advise.
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Farhan,
The unit I received at FDIM works fine with Vcc from the barrel jack, but not from the battery pack.? ?
Peeking at the PCB, the power circuit has changed from the schematic you posted on Dec 27th:? there are polarity protection diodes for each input now.? But it looks like batt(-) erroneously goes to the barrel jack instead of ground.? Would you mind checking it?? ?Should I cut this trace and add a wire to ground?? Or is there a better method?
- Bruce ?
On Fri, May 17, 2019 at 6:30 PM Ashhar Farhan < farhanbox@...> wrote: I am building up the info on . there is a place holdrr page for it already. - f
On Fri 17 May, 2019, 3:33 PM Jack Purdum via Groups.Io, <jjpurdum= [email protected]> wrote: It's his spectrum analyzer. I don't understand what Curt's PO'ed about? He's free to attend FDIM.
Jack, W8TEE
And what "unit" pray tell are we talking about here?
Roy WA0YMH On Thu, May 16, 2019, 9:12 PM David Wilcox via Groups.Io <Djwilcox01= [email protected]> wrote: Farhan,
I heard your lecture at FDIM and purchased one of the units but need instruction in how to use it.? Github only has the upgraded code files.? Please advise.
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Re: treble only SSB modulation
Hi, just to add my 2p worth. I had this problem and like above, used a dummy load and transmitted an LSB signal. This was received by another rig and showed the BFO was way off.?
I replace the SMD capacitor with a number of others in a number of values and parallels, but could not get the sound I was after. They were all too low or too high in pitch and often just unable to understand at all. Eventually I looked for another set of capacitors and found one from Rapid Electronics. variable 7pF to 50pF SMD. Fitted this and then adjusted it, a bit at a time. until I got the sound I wanted.
Thanks to all here for the help and discussions explaining the fix.
73s Vaughn
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HFSignals says available June 2
On 5/17/2019 12:02 PM, Karl Heinz
Kremer, K5KHK wrote:
toggle quoted message
Show quoted text
Farhan sold some last night at FDIM (and yes, I have one ;) ). The
sign he had implied that there is a ¡®normal¡¯ price of $100, and he
sold them at a discount, so I would assume that you will
eventually be able to order them.?
--
Karl Heinz - K5KHK
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I am building up the info on . there is a place holdrr page for it already. - f
On Fri 17 May, 2019, 3:33 PM Jack Purdum via Groups.Io, <jjpurdum= [email protected]> wrote: It's his spectrum analyzer. I don't understand what Curt's PO'ed about? He's free to attend FDIM.
Jack, W8TEE
And what "unit" pray tell are we talking about here?
Roy WA0YMH On Thu, May 16, 2019, 9:12 PM David Wilcox via Groups.Io <Djwilcox01= [email protected]> wrote: Farhan,
I heard your lecture at FDIM and purchased one of the units but need instruction in how to use it.? Github only has the upgraded code files.? Please advise.
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Re: treble only SSB modulation
Hello Adrian,
a good avdice, I'll try this this week-end, as I need to bypass first my AGC board from kit-project (soldered on the slow agc position), who changes a littke the overall audio response...
I'll let you know here.
73s
--
Laurent F5FIE.
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YO8UFO
Vic WA4THR
Vaughn