Re: ubitx - stop press
Building for myself, I'd try leaving the extra filters out. ?Use an EFHW wire with a tuned impedance matching circuit. ?Though if mass produced, it really needs an output filter at the amp.
By
Jerry Gaffke
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#24746
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Re: Lost all audio
She is alive again! ?I replaced the audio amplifier last night and she came right back to life. ?Thank you all for your help.
By
Tim - K7OB
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#24745
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Re: Adding speech compression.
https://www.blubrry.com/arrl_the_doctor_is_in/21698901/speech-equalization-compression-and-processing/
Speech Equalization, Compression and Processing
*March 30, 2017*
va7jbe@...>
By
Lawrence Galea
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#24744
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Re: ubitx - stop press
How many bands will this cover, and does selecting 80m rather than 40m make a difference.
Still very interested.
Phil G7BZD
By
philip yates <phil@...>
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#24743
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Re: ubitx - stop press
Hi! Farhan..
I guess your results hold true for other 510 PP amps as well when used with other exciters as well...!!!
Rahul VU3WJM?
By
Rahul Srivastava <vu3wjm@...>
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#24742
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Re: USB/LSB operation
There are two ways to change fro USB to LSB and vice versa.
One is changing the BFO frequency from 19MHz (12+7) to 5 MHz (12-7).
The second is to change the BFO frequency in order to pick the 12MHz
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Miguel Angelo Bartie
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#24741
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Re: USB/LSB operation
This is just awesome thank you so much.
By
Steve Greer
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#24740
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Re: USB/LSB operation
This happens when the three wires of the volume control is wired wrongly.
Raj
By
Raj vu2zap
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#24739
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ubitx - stop press
peeps,
i did some more testing of the ubitx with the homebrew specan (as opposed
to the rigol), i have some good news, bad news and good news.
1. good news : the homebrew specan does a better job
By
Ashhar Farhan
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#24738
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Re: USB/LSB operation
While I certainly lack the deep understanding you guys have, tonight I went ahead and removed c91 and c92. I thought I could jumper over them but now I realize I was mistaken. This had the intended
By
Ryan Flowers
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#24737
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Re: has anyone built this kit AGC from Amateur Radio Kits?
What is your concern with the kit?
Sunil has put information on his site.
please go through and try to use. . Still you have a problem, perhaps I
to could be of some help.
all the best
By
MVS Sarma
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#24736
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Re: USB/LSB operation
Alright guys, check it out. I have had a great idea. Start a thread Called "Users User Manual", start it with links?to the official instructions. Additional notes on missing #5, and advice on which
By
John Smith
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#24735
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Re: uBitx Prototype (PCB)
Nice work, Jc.
I can see this as being easily made with automated equipment, but...
that's a lot of holes to drill at home. And all of them have to be precise.
Is it possible that a muppet style of
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John Backo
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#24734
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Re: uBitx Prototype (PCB)
You might need a more solid ground plane. ?Perhaps stitch some of the islands on the backside together using traces on the front side. ?
You are using 1n4148's in the mixers, Farhan is using BAT54
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Jerry Gaffke
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#24733
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Re: uBitx Prototype (PCB)
It looks good! If it were mine I would change tow minor things. The resistors I would show as 4K7 for 4.7 because my old eyes have trouble with those little tiny decimal points any more, and I would
By
Jeff
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#24732
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Re: USB/LSB operation
"...the snippets I copy and paste..."
Therein is why I corrected it, because it would have confused some people. If you had "copied and pasted" it from code that worked, it would have been an 'L', not
By
Jack Purdum <econjack@...>
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#24731
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uBitx Prototype (PCB)
Hi Fellows
This is only a prototype to work with a PCB.
I have the file with the Sprint layout from ABACOM.
Any concern about the design please forward to-Heriberto- cl2kmk@...
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JuanCarlos Berberena Gonzalez
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#24730
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has anyone built this kit AGC from Amateur Radio Kits?
I ordered 2 kits thankfully because both were missing parts and I could make 1 kit from the 2 ..seller non-responsive.. can anyone tell a newbee how/where to connect the "audio" and "to AGC" to the
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Erik Hokansson <hokan@...>
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#24729
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Re: USB/LSB operation
Ah, come on. ?You're tougher than that. ?It's how you learn. ?You've learned a fair bit these last couple months.
Now go clean up that wireup documentation.
Jerry
By
Jerry Gaffke
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#24728
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Re: Version 1.04 Function Button
Noel
Used this code - it works great! More reliable and responsive than the original.?
Thanks,
Howard, VK4BS
By
howardmsmall <howard@...>
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#24727
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