Cfrrier suppression
Hi? All! To be tested: all band mBITX, 40-ty m. band, R110 -150 Om, C 68-75 pF parallel BAT54SL (points 2-4 of the transformer, carrier from -26 dB moved down to -40. PA output is 10 W on this
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George
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#60219
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Re: Right-sided relay harmonic attempted fix for v3/4 ubitx
Hi Gordon, If you order boards again I would be interested in buying two for my 2 uBItx kits. Thanks, Bob KM2Q
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Bob Twiggs
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#60218
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Re: I find This Shorted Circuit on Raduino, here the pics..plz Help?
#ubitx-help
Hallo thank you for your answer ? In the last of my written thread, "shortet in raduino...) i have post in the forum, you write to me some things... ? About this things you have written with the
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sdr freak
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#60217
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Re: VK4PP uBitx scratch built.
Those boards are really neat Nick, what size SMD parts is this setup for? Skip Davis, NC9O
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Skip Davis
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#60216
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Re: W0EB's uBITX with 5" Color "mouse" Screen 1st QSO!!!
#ubitxcw
#ubitx
Shortly after I worked him, another CT9 call (I didn't write it down) was being used so I suspect he was operating from a local ham station somewhere on Madeira. I don't think it was a DXpedition,
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Jim Sheldon
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#60215
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Re: W0EB's uBITX with 5" Color "mouse" Screen 1st QSO!!!
#ubitxcw
#ubitx
Interesting. I will be visiting Madeira for a week between 15/10 and 22/10. I wonder if he will still be active.
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Alan G8PXL
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#60214
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Re: #bitx40 BITX40 Winlink configuration
#bitx40
Very good! Although I am sort of distracted right now, I made several WINLINKconnections with the uBitx and a nonresonant sloper dipole with a tuner. It¡¯s not a lot of power, so you have to choose
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Gordon Gibby <ggibby@...>
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#60213
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VK4PP uBitx scratch built.
And so it begins. These are my SMD proto/scratch built boards. 100mm X 100mm cost was $8 for 10, posted, I am pretty happy how they turned out. 73 Nick VK4PP.
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Nick VK4PP
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#60212
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Re: Low Pass filter inductor question.
#filters
Carefully measured results were published on this forum. Construction: https://qsl.net/nf4rc/2018/OutboardRelaysDesignDocumentTry3.pdf
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Gordon Gibby <ggibby@...>
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#60211
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Re: Low Pass filter inductor question.
#filters
A thought that might help, Gordon, though you seem to have this anyway: Treat the filters like fire hoses. Taps to turn one to pass at a time, others blocked to stop leakage, and simultaneous in and
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Dexter N Muir
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#60210
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Re: Low Pass filter inductor question.
#filters
Gordon Gibby seems to have it licked - and inexpensively! Any before/after measured results for comparison, Gordon? 73 Dex, ZL2DEX.
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Dexter N Muir
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#60209
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Re: Low Pass filter inductor question.
#filters
Thanks for all the input.? I'm trying to keep this simple....but I also want it to work. So this weekend I'll get it switched on both sides and figure out how to ground the unused filter while I'm at
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davedt1e@...
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#60208
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Re: Low Pass filter inductor question.
#filters
In the simple little design that I did to move one side of the relays off the board, I grounded un-used filters Gordon
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Gordon Gibby <ggibby@...>
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#60207
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Re: Low Pass filter inductor question.
#filters
I certainly agree with that, Lawrence. It's called Port to Port isolation and you want to keep it as high as possible to be as effective as possible as a filter. Another point, I was using DPDT relays
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Kees T
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#60206
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Re: uBitx Build Nearly Complete
Curt Nice work, yes enjoy the rig to decide what if anything it needs. Curious what type of microphone you have mated with it? Here in Maryland about 20 of us are preparing for a group build as nice
By
Curt
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#60205
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#bitx40 BITX40 Winlink configuration
#bitx40
For the record, here's what I have running winlink - BitX40, stock 5W more or less Pac Ant 20/40 trap dipole, inverted Vee on broken sailboard mast Surface Pro/WIN10 Winlink Express 1.5.14.2 WINMOR on
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Daniel Crane
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#60204
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Re: #bitx40help BITX40 LSB Winlink
#bitx40help
It's working!? An RMS in Reno 563 km away took my call and forwarded my email.? What I've done since posting my request in March was, switch to USB via Allard's sketch as you all recommended and
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Daniel Crane
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#60203
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Re: uBitx Build Nearly Complete
Nice work Curt Joe
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Joe Puma <kd2nfc@...>
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#60202
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Re: BCI Filter
From Rtl-sdr.com Joe
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Joe Puma <kd2nfc@...>
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#60201
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Re: BCI Filter
Joe, Maybe I missed it, but where did you get your BCI filter board? 73, Carl, K0MWC
By
RCBoatGuy
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#60200
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