Re: Amplifier
#ubitx
#ubitx-help
#parts
Due to filtering issues and spurious outputs doing that is not recommended. If you do, familiarize yourself with telecommunications rules that apply to your country.? You may not be in compliance.
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ajparent1/kb1gmx
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#58229
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Re: Any Gerber Experts Round Here?
#kicad
#ubitx
You might find this amusing, but I already did this... and Fiverr responded with the following: Unfortunately, your Gig request "Gerber Files... Convert RS-274D to..." did not pass our review. It was
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Ben Holmes
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#58228
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Re: UBITX V3 TX GAIN VARIATIONS
Gordon, For better than 10W on 80 and at least 7 on 20.... Replace q90 with something better, BFR106 was good. MMBT2369 is ok. Replace the standing 3904s with 2n2222A(to18) part. Hint installing them
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ajparent1/kb1gmx
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#58227
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Re: Any Gerber Experts Round Here?
#kicad
#ubitx
I've had some luck with hiring on fiverr.com for totally unrelated small tasks.? Might be worth seeing what you can find searching "convert gerber".? Contact anyone that has a listing close to what
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Doug W
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#58226
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Re: CW PTT attack time to slow
#ubitx
This might be a possible fix:?https://qrpguys.com/ubitx-cw-conditioning-adapter
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Ben Holmes
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#58225
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CW PTT attack time to slow
#ubitx
Hi there, just finished a ubitx build and I am trying to use it with my K3NG arduino keyer. I have set the CW configuration to straight key. The keyer output is open collector. I get a nice sidetone
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Joop Stakenborg <joop.stakenborg@...>
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#58224
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Re: uBitx Unfiltered
I've side stepped that.? That has been done on every IRF510 amp in Bitx and a big handful more radios out there.??In every case my reaction to that is, it is insane.? ?Everyone I see I tell them
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ajparent1/kb1gmx
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#58223
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Re: uBitx Unfiltered
I still believe "there is a pony out there" .....small handful of parts and a good dual relay switched LPF board. 73 Kees K5BCQ? Isn't the rest of that is "I can smell it...." Yes ferrite and a few
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ajparent1/kb1gmx
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#58222
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Amplifier
#ubitx
#ubitx-help
#parts
Hello everyone I want to amplify the power by amplifier so i want the amplifier for it with simple so i want some suggestions
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??? ?????? <hamad.kalid@...>
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#58221
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Re: Any Gerber Experts Round Here?
#kicad
#ubitx
Yes... but look at how much fun I'll have! Provided someone here can help me figure this out!
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Ben Holmes
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#58220
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Re: UBITX V3 TX GAIN VARIATIONS
Thanks so much Allison --- now that I have a handle on the harmonics, working on Q90 will be one of my next projects. That looked like the easiest gain target.... I have read your posts earlier and
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Gordon Gibby <ggibby@...>
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#58219
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BITX40 Saving Settings Issue
Just finished putting the BITx40 in an enclosure and most things are working.? I set it up first in the default configuration and tested per directions.? I then installed sketch v.1.28 per
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hamhog1 <gwgrogg@...>
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#58218
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Re: UBITX V3 TX GAIN VARIATIONS
VEry annoying I attached three things and none followed the post! So 2n2222A datasheet 2n3904 data sheet and picture of said amp built on Kitsandparts board.
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ajparent1/kb1gmx
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#58217
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Re: UBITX V3 TX GAIN VARIATIONS
For the driver you need about 400mw and one 2n2222A would not do it maybe as push pull as I've run them as linear that way for 500mw. The big thing is the 3904 is high power?and trying spread the
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ajparent1/kb1gmx
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#58216
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Re: ATU for mBITX
I have one of the Chinese tuners, with the plastic, variable capacitors, that I built from a kit.? I found the adjustments to be very touchy and not repeatable.? I have since replaced it with
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Dennis Zabawa
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#58215
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Re: Any Gerber Experts Round Here?
#kicad
#ubitx
?Wow, that's a pretty complicated printed circuit board....and we already have a ton ofproblems with one laid out by a fellow who has years of experience at it.....wish you good luck!!! cheers, gordon
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Gordon Gibby <ggibby@...>
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#58214
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Re: uBitx Unfiltered
Yes, I think with some low pass, band pass filters it will be useable, especially on 20 and below. I still think it's amazing what can be packed in when one considers the price. When I started out,
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Brent Seres/ VE3CUS
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#58213
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Re: Can we start using SUBGROUPS? uBiTX, biTX40, QRPKITS, Original BiTX20, Homebrew, Other?
Hey folks, I guess I need to put my oar in the water, too. :-) I can¡¯t begin to thank you all for the diversity and variety of topics on this group. I admit that some went on to extreme limits, but
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bands11 <bands11@...>
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#58212
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Power and SWR meter
Dear al, The newest Power and SWR meter design and for sure home made, small and really accurate. See for more information : /g/RadioStuff Also nice to see the one of a kind
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Johan Holstein
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#58211
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calibration question
#ubitx-help
Two questions: When I tune in 10MHz WWV in LSB mode on the uBITX, the frequency reads 9.998.500.?*Does it mean the rig is out of calibration or is it supposed to read like this in LSB mode?*? I note
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Mike KK7ER
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#58210
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