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Re: ubitx 5 board
Bill? i get? the? down load? but its? not? like? the? sample? file? that? kd8cec? has? on his? site? upgrading? ?Iam? useingxloader? and? says its? doing the? uploading but? nothing? there? ?his? test? ?ubitx__20_org? works? ?good? ?but? onlt? ver .02? thats? my? problem? i have? tried? evrything? ?tnx? don? W0DJK On Wed, Mar 27, 2019 at 9:50 AM MadRadioModder <madradiomodder@...> wrote:
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Re: Board Map/Layout, Test Points? (V5)
Regarding the PCB layout for the Bitx40 and uBitx, post 35123 from Farhan states:
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"the gerber had to be provided under restrictive copyright for hfsigs due to some legal twist, as the only 'asset' of hfsigs." In post 36079, Farhan states: "?wish somebody else does it! the circuits, the software, everything is open source. HFsigs owns nothing except the domain name and the pcb gerber files. even the content is open source. it would be even more fun for us to sit back and watch others do it." ?? So if you have a major beef with hfsignals,? just kit up your own version of the uBitx, ????,? make millions of dollars. Jerry, KE7ER ? ?? On Wed, Mar 27, 2019 at 03:00 AM, Gordon Gibby wrote: In this day and age, that would be somewhat like demanding he give up corporate intelligence knowledge. ?Layout is a valuable commodity. |
Re: uBITX 5 - Backing Away
#calibration
IF there was the documentation trail that you desire, the board price would would go up tremendously!? ?Creating the baseline documentation, and maintaining it from there, is a never-ending task that goes way beyond the capabilities of free labor.? The best way to describe the BITX/uBITX is a user supported, "work-in-progress".
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Re: Shaking my head in disbelief....
Kelly
I suggest getting your rig working well before updating firmware.? Fix the volume control?? It might not be broken.? Are you listening on speaker or headphones?? The ubitx is known for having low audio drive.? And remember there is no AGC.? Using headphones, you will likely find the need to increase volume to about 3/4ths full to receive the weakest signals, particularly on CW.? Also on CW, note with the rather wide bandwidth there is much more noise until you use an audio filter.? This could be what you are dealing with?? Note for the very loud signals you may be running at about 5% or less on the volume control.? Do take more data before concluding anything - possibly your ubitx is operating normal.? If you are a speaker guy, an external speaker amplifier could help.? A simple AGC might be in your future also.? Glad you might have things working.? Curt |
Re: uBITX 5 - Backing Away
#calibration
Sure we all get there sometimes!? Deciding a particular path is not for I.? It happens.?
uBITX is certainly a different paradigm.? there is less focus on instructions since one mostly connects up wires, and it was never intended for a particular enclosure.? the menu system is mostly intuitive - and note its 'merely' for the initial firmware.? keep in mind many in the world cannot, or chose not to, afford something like the KX3.? the uBITX is the easiest path for many ops in many places.? I am thinking that that the testing and alignment on the uBITX could be more thorough - but note this requires more funds to purchase, a possible obstacle for some.? Its easy to be a critic when we may live in a different culture, yet somethings aren't so different.? I think the largest uBITX challenge may be lack of a kit to address the spurious.? I sense the supplier has put as much 'value' into the main board as possible, maybe.? If v5 still has some harmonics, I still suggest a daughter board hosting relays as perhaps the best solution.? On the 45 MHz to RF spurs on transmit - I don't yet possess a solution.? The little filter used on v5 isn't enough (see 12m especially).? A second sharp xtal filter in the transmit path certainly works, but it my case it wrecks 40m CW.? All this is part of the journey - meanwhile my uBITX is clean on CW, and okay on SSB up through 20m.? Progress!? The world is a better place just having the uBITX option.? 73 Curt |
Re: uBITX 5 - Backing Away
#calibration
Laurence Oberman
Hello Sir
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While I fully understand the frustration, if time is an issue then yes buying the KX3 was a bargain. There are statistically many more happy Ubitx owners than unhappy ones so the project is a success Sir. The learning opportunities and ability to customize outweigh the negatives. Please note, I am not downplaying any of the folks that have had issues and have been frustrated with the efforts needed to get the units fully functional, but many more have had them work out of the box. I have 3 units, the V4 gave me issues and turned out to be a Mic socket hardware issue for SSB. The two new V5's worked right out the box. How can we help Kindly 73 KB1HKO On Wed, Mar 27, 2019 at 10:53 AM A Kiddoo <kt0tt.ham@...> wrote:
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Re: uBITX 5 - Backing Away
#calibration
Gordon Gibby
¿ªÔÆÌåÓýThis might not be the device for you my friend.To calibrate mine, I simply commanded the digital synthesizer to go to The frequency of its internal oscillator ?crystal, measured the frequency error, and put in appropriate correction into the software.?? But I was drawn to it because I know how to program?
Others can use different mechanisms, but it certainly isn¡¯t the rig for everyone!
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Thanks for your input Chris. ?My background was originally device drivers and sockets starting with Unix Version 7 - Then Unix System III - and then finally Unix System V. Lots of Kernel work. ?Lots of protocol development too X.25 etc. I use a Mac and I had fits at first getting the IDE to talk to the Nano Clone. ?Lots of driver installing and uninstalling. ?But once it works - it seems to stay stable. ?I hope he is able to solve his comm problem.?73 John N6API - CFO #043 |
uBITX 5 - Backing Away
#calibration
? Time for a break. I drank the uBITX koolaide and have been fighting with that thing for almost a month now. The instructions and available data on the project is a total mess. There is no instruction manual or step by step how-to, just a conglomeration of comments by experiments. Assembly is easy but calibration is nothing short of luck. There appears to be as many outcomes as experimenters. The low quality of parts may affect the tolerance values resulting in a quite unpredictable result. Add to that the simplicity of design with dual circuit functions and the possibility for errors compounds. So unless someone derives a solution in the near future I will be looking for a new sucker at a hamfest this summer. Fine example of 'If it sounds too good to be true it isn't'. uBITX makes my KX3 look like a bargain if?my time has any value. ? My board (147/2) arrived with one lead on L8 not through the board and no solder residue in the hole or pad. If this board passed ¡®testing¡¯ I really question production procedures. ? I not asking for ¡¯try this or try that¡¯ but a book or guide with specific proven instructions. So for now uBITX sits in a box, in the basement waiting for a second chance. |
Re: Board Map/Layout, Test Points? (V5)
Gordon Gibby
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Re: ubitx 5 board
¿ªÔÆÌåÓýDid he post the source somewhere?? Github perhaps? ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Bill
Sent: Wednesday, March 27, 2019 6:37 AM To: [email protected] Subject: Re: [BITX20] ubitx 5 board ? Try Bill K9JUI ? On 3/27/2019 7:13 AM, Don Klier wrote:
-- ¡_. _._ |
Re: Lost RX
Gary
indeed, first examine whether the BFO calibration is off - I think I see enough data (including my v4) that HFSignals does not align the BFO.? if all is okay here, then ... [it would help a lot if HFSignals would list a 'default' BFO setting in the instructions!? maybe a v5 builder reading this will share their BFO setting] my best guess is you have a connection issue somewhere.? (I certainly have made a bad solder joint before, and sometimes they are even attached!) I would first check all the wires you installed, including insure you don't have a stray piece of wire causing a short across the RF.? Or it could be an audio issue also.? A much smaller possibility - check more than one band in case it were an issue with board mounted filters or relays.? Hang in their patiently - I sense its something simple.? Curt |
¿ªÔÆÌåÓýActually, Linux (and Unix) DO use device drivers. You just don't
typically have to deal with installing them. On 3/26/2019 3:25 PM, Pat Anderson
wrote:
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Re: Lost RX
Did you try calibrating the BFO?? Mine arrived with BFO so far out that the crystal ladder filter was attenuating most of the audible signals.? Getting the BFO set reasonably close got my received audio much improved.? Mine is currently at ...55.5, pending some adjustment to keep the carrier nulled on transmit.
--Ron K0EIA |
Re: Lost RX
Cut and paste from previous message:
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Check all the mixer diodes. Using the tip of your multimeter probe gently press the legs towards the board and discover any solder given up in the board's long travel! Do this on RX with a volume turned up. Any increase in background noise and you have found it. Raj At 27-03-19, you wrote:
Wired up my uBitx ver 5 and tried it out stock, I could hear a couple stations on 40, but were very low. Out of the 3 or 5 I heard I could only tune in one of them to the point I could understand them. I upgraded to a touch screen which seems to work fine, but I hear nothing but a low hiss from the speaker now. I do hear plenty of volume when I find a birdie though, so I assume the audio amp is still working. |
Lost RX
Gary Rosenlieb
Wired up my uBitx ver 5 and tried it out stock, I could hear a couple stations on 40, but were very low. Out of the 3 or 5 I heard I could only tune in one of them to the point I could understand them. I upgraded to a touch screen which seems to work fine, but I hear nothing but a low hiss from the speaker now. I do hear plenty of volume when I find a birdie though, so I assume the audio amp is still working.?
What I found this morning, is I hear no difference if an antenna is connected or not. I hear no stations at all now.? Am I missing a step, or any suggestions what to look for? KC8YJJ |
Re: Reverse Polarity Protection.
I have not come across a dud transistor but many issues with
soldering.
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Check all the mixer diodes. Using the tip of your multimeter probe gently press the legs towards the board and discover any solder given up in the board's long travel! Do this on RX with a volume turned up. Any increase in background noise and you have found it. Raj At 27-03-19, you wrote: Ah, thanks for that info Evan. |