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Date
Re: spur & harmonics fix, v2
When transmitting in CW mode, clk0 and clk1 get shut down. All we have active is clk2 set to the operating frequency.? ? Nothing for clk2 to beat against and create a spur, so the only bad stuff in
By Jerry Gaffke · #62364 ·
Bare Board Image
If anyone has an unassembled uBITX KIT, I sure would like to have scans of the top and bottom.? Would like pretty decent resolution, => 100 dpi? jpg files.? Would make it easier to trace runs.
By Woody <mailme@...> · #62363 ·
Added characters while using the keyer function #ubitx
I have a V3 ubitx given to me and I have added a jack for an imabic keyer.? Seems to work but I am finding that it will sometimes send dah dit dit dit dah when I send the letter C.? Just a bit
By john mathieson <john.ac8jw@...> · #62362 ·
Re: spur & harmonics fix, v2
If I did try it out, it would only confirm that the board still works (assuming I don't destroy it in making the mods).? With the simple equipment that I have (the RFExplorer SA, Siglent SDS 1102CML+
By Evan Hand · #62361 ·
Re: UBITX Current Production (spur fix ?) #ubitx
Can I return my V4 and get a replacement V5 ? NOT Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 ________________________________ Sent: Thursday, December 6, 2018
By RICHARD <k6kwq@...> · #62360 ·
Re: UBITX Current Production (spur fix ?) #ubitx
From this post, I assume the uBitx boards being shipped are still v4, with no fixes for harmonics or spurs. ? ? /g/BITX20/message/62307? Doesn't really spell out the current
By Jerry Gaffke · #62359 ·
UBITX Current Production (spur fix ?) #ubitx
Question? Does the current uBITX production version include the spur? and harmonic improvement mods that have been discussed on this group? (ie new relays, etc) If not,? when can one expect changes
By Mark Hinkleman <nu8z@...> · #62358 ·
Re: UbitX audio hiss but no rx
Sean did reply to me in a private email.? His rig is as follows: Hi Evan, Thank you for your reply. I have a UBitx I have everything as delivered. It is the standard raduino, I believe the nano. The
By Evan Hand · #62357 ·
I buy ubitx
Hi all: I buy ubitx of some European colleague, to avoid the payment of customs, for difficulties to mount it myself. a greeting
By ea5eq01@... · #62356 ·
Re: UbitX audio hiss but no rx
For debugging the receiver, Farhan points the way in this blog post: ? ??http://bitxhacks.blogspot.com/2016/12/troubleshooting-bitx40.html He uses a 3 foot piece of wire as an antenna to pick up
By Jerry Gaffke · #62355 ·
Re: Great Results with Mic Preamp
Thanks Paul. I wanted to try it there to see how well it worked.? Going in, I wondered to myself how I'd know if it started to oscillate - it wasn't hard to notice.? hi hi As it is, turning the pot
By AndyH · #62354 ·
Re: UbitX audio hiss but no rx
One other question: does the hiss change without the antenna connected?
By Evan Hand · #62353 ·
Re: UbitX audio hiss but no rx
If you have access to an oscilloscope I would check that you are getting all three clock signals out of the Raduino.? I had checked mine at the Raduino to uBitx board connection on pins 3, 6 and 9.?
By Evan Hand · #62352 ·
Re: UbitX audio hiss but no rx
No nothing Sent from my Huawei Mobile
By Sean Pearce · #62351 ·
Re: Desoldering tool suggestion
I used the technique that Jerry describes in his last paragraph to remove and replace the relays in my uBitx with the Axicom's. The relays almost fell out of the board when I reheated the pins using
By Rick Price · #62350 ·
Re: Desoldering tool suggestion
Jerry Agree wrong tool Dom smd work. Right tool for relay removal and leaded work. I have a rework station for smd work Art
By Art Olson · #62349 ·
Re: UbitX audio hiss but no rx
Do you hear loud popping noises as you install antenna to connector.
By _Dave_ AD0B · #62348 ·
Re: Desoldering tool suggestion
I have never used a solder sucker on surface mount parts. I don't think I would find much use for that particular tool, even on through hole parts. You do want a soldering iron with a very small tip.
By Jerry Gaffke · #62347 ·
Re: Desoldering tool suggestion
I have soldered for 55 years Have used the bulb style with the teflon tips. It has only been recently that I have tried working on sm parts All my equipment has been too big. I saw the post by Art and
By _Dave_ AD0B · #62346 ·
Re: LSB signal looking more like AM
Good advice Bill Cromwell! And maybe he can find some ham somewhere he still knows some things and can listen to him. Or use some waterfall and a CW Carrier somewhere to allow him to plot his own
By Gordon Gibby <ggibby@...> · #62345 ·