Re: uBITX V6 Maximum "Safe" Voltage
Hi,
For anyone that may be interested, I just checked what version uBitx I have -- that I'm running on 14.0 volts.
Looks like I have a V3 (2017) board. The audio amp is a?UTC2822M. The chip is mounted in a socket.
Doesn't seem that long ago when I ordered this radio and was very excited when the DHL package from far far away, arrived at my door.
Tom, wb6b
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Curt this statement you wrote is incorrect: Note the ubitx makes cw transmit by leaking 45 MHz RF direct through the last mixer. On CW transmit the clock #2 to the first unbalanced mixer before Q90 is at the operating frequency and the other two clocks (#1 & 0) are turned off during CW transmit. This is per the circuit description for the UBITX on HFSignal¡¯s website. I would check if you are getting DC bias voltage to R104 from pin 13 of the Raduino when you close your CW key. Also clean the contacts of your key they could be dirty giving the key input to the Arduino a false level.
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On Jun 6, 2022, at 16:14, Curt via groups.io <wb8yyy@...> wrote:
Note the ubitx makes cw transmit by leaking 45 MHz RF direct through the last mixer.
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Well I found what was causing the voltage problems...after checking all around the system I recalled that I had replaced a leaded 2N3904 with a 2N2222A for Q90 since they are equivalent, right? Well, yes, but the pin outs are reversed and even further from the original pin layout of the original SMD 3904. Correcting that mistake now gives correct voltages on all transmit transistors from Q90 on through the finals.
However, still no power out. It is oscillating on frequency and sounds fine...just no measurable power. Raj, I do get blocking action on C80, so can I just bridge it with a leaded cap of the appropriate value? I haven't touched RV1, but maybe I just swing that through its range as well. After spending literally hours on it this afternoon, though, I am going to take a break before moving forward now.
=Vic=
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Check the solder joint on the cw pull up resistor. Oh and check your key and wiring too.?
Note the ubitx makes cw transmit by leaking 45 MHz RF direct through the last mixer. I am doubting likely failure of the few parts on the board.?
Curt
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Hi,
Most picture formats are blocked from going in the Files section, so they should be going on the Photos section.
For me too, it is much easier to set the emails to specian notice only, and then access the forums through the groups.io website.
73
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I have a new, assembled uBitx V6 available.? I received it new in January and out of box, I could not get it to work well in CW mode, which was my intended use, and the mic was inop, replaced by HF Signals.? I posted here in forum about possible help working on it and upgrading it to new firmware and thanks so much to those who offered to help.? However, I'm 71y & have concluded this little rig is just not for me - I just do not have the interest or knowledge to tweak it.? It has not been modified in any way.? Details:? This is the full unit with factory supplied chassis.? I powder-coated the chassis case red and it looks great but not perfect.? The unit will include the inop and unassembled original mic, the new HFSignals mic, and an AGC add-on board kit from kit-projects that has never been installed.? Note the top rear cover screw bolt that is rivetted to the frame is loose.? Obviously, it is being sold as is but it does work.? It just needs some TLC and I don't have the will to do that.? I'm asking $150 with free shipping to lower 48 - Paypal preferred.? If you have any questions or want any photos, let me know at? nd1j@....? ?Thanks & 73, David ND1J? Senoia GA
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It depends on the band your on what the output is .. did you use a diff band ?
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On Jun 6, 2022, at 12:29 PM, KM4TRT via < garello@...> wrote:
Hi Folks, I was tuning up my u-Bitx by shorting the cw, which usually gives me about 9 watts and all of a sudden it stopped. The SSB still works fine, showing about 5 watts on the meter.? Anyone know what might have blown out?
Andy KM4TRT
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Hi Folks, I was tuning up my u-Bitx by shorting the cw, which usually gives me about 9 watts and all of a sudden it stopped. The SSB still works fine, showing about 5 watts on the meter.? Anyone know what might have blown out?
Andy KM4TRT
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Richard, Here is the URL for the Amp.? Costs about $5 altogether with shipping and 3 weeks.
Andy
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Re: Some capture from sbitx
Ashhar,
Thank you so much for all your work on this project.? I am hoping the sBITx will be my first HF Transceiver, and I eagerly await its availability.?
I have a few questions:
Firstly, If a 3G/4G hat was used on the PI could that be used for all of the internet based functions when out in the field?
example:??
Also,? Is there a timeline for availability of the sBITx?? Maybe an option where the end user supplies their own display and Pi 4B?
Lastly,? will additional displays be functional when using the Pi touchscreen?
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Doug:
I did not see such an option, but I wasn't really looking for it. I'll do that tonight.
Jack, W8TEE
On Monday, June 6, 2022 at 10:55:18 AM EDT, Rick Green <rtg@...> wrote:
On Mon, 6 Jun 2022, Doug W wrote: > Jack's very valid point about server usage aside, I highly recommend you go to /g/BITX20/editsub and change your email delivery > preference to either no email or special notices only.? Then access the list at? /g/BITX20/topics and read it like a forum instead > of wading through email.? Not only will this free up your inbox it groups messages by subject making topics easier to follow. I agree with these sentiments.? For most of the 90's I was stuck with dialup service while the public use of the Internet was exploding.? The developers and 'Influencers' all seemed to have unlimited broadband access, so they accelerated the use of gratuitous graphics, with no concern for the majority of internet users who had 56k or slower intermittent connections at that time. ? 'Just use Delete' isn't the answer.? A large bloated message in your Inbox will hang up your connection until its fully downloaded, and will delay or prevent the delivery of many smaller messages until it is complete. ? A possible workaround for the user is the IMAP protocol rather than POP3 for mail delivery.? IMAP allows for the download of just the index of available messages, so that the user can selectively download them, or delete them on the server unread.? Most web browsers have an option to suppress the display of all graphics unless individually requested.? I used this as an advertisement blocker for many years. ? A question for the group administrator:? The Groups.io service has many options, including the 'Forum' mode you mention above.? I believe it also has a 'files' section reserved for each group, and I've seen some groups encourage its use in preference to attachments.? Does Groups.io also have an option to automatically strip attachments from all posted messages, and convert them to links into the groups 'files' section?? This would also eliminate the duplicate bloat which happens when users include the images again in their reply messages. ? Hopefully the threading capability of the forum can also detect and suppress the full quotation of previous messages, which easily becomes its own form of bloat. -- Rick Green, N8BJX
-- Jack, W8TEE
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On Mon, 6 Jun 2022, Doug W wrote: Jack's very valid point about server usage aside, I highly recommend you go to /g/BITX20/editsub and change your email delivery
preference to either no email or special notices only.? Then access the list at?/g/BITX20/topics and read it like a forum instead
of wading through email.? Not only will this free up your inbox it groups messages by subject making topics easier to follow. I agree with these sentiments. For most of the 90's I was stuck with dialup service while the public use of the Internet was exploding. The developers and 'Influencers' all seemed to have unlimited broadband access, so they accelerated the use of gratuitous graphics, with no concern for the majority of internet users who had 56k or slower intermittent connections at that time. 'Just use Delete' isn't the answer. A large bloated message in your Inbox will hang up your connection until its fully downloaded, and will delay or prevent the delivery of many smaller messages until it is complete. A possible workaround for the user is the IMAP protocol rather than POP3 for mail delivery. IMAP allows for the download of just the index of available messages, so that the user can selectively download them, or delete them on the server unread. Most web browsers have an option to suppress the display of all graphics unless individually requested. I used this as an advertisement blocker for many years. A question for the group administrator: The Groups.io service has many options, including the 'Forum' mode you mention above. I believe it also has a 'files' section reserved for each group, and I've seen some groups encourage its use in preference to attachments. Does Groups.io also have an option to automatically strip attachments from all posted messages, and convert them to links into the groups 'files' section? This would also eliminate the duplicate bloat which happens when users include the images again in their reply messages. Hopefully the threading capability of the forum can also detect and suppress the full quotation of previous messages, which easily becomes its own form of bloat. -- Rick Green, N8BJX
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Jack's very valid point about server usage aside, I highly recommend you go to /g/BITX20/editsub and change your e mail delivery preference to either no email or special notices only.? Then access the list at? /g/BITX20/topics and read it like a forum instead of wading through email.? Not only will this free up your inbox it groups messages by subject making topics easier to follow.
--
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That's not the issue. Each post is stored on the groups.io server and the capacity depends on the type of account you have. My group is much smaller than this one, but four years ago members ate through the "free" storage so I increased capacity, but it was no longer free. I paid the first couple of years out of my own pocket, but last year the bloat was such that I had to go to the next level. Now we're talking about something greater than pocket change.
The point is: delete doesn't do much good on the server side. You can help your admin by only sending what is necessary to understand the post. If need be, refer to the early post number for support info that doesn't need to be sent twice.
Jack, W8TEE
On Monday, June 6, 2022 at 09:40:32 AM EDT, MadRadioModder <madradiomodder@...> wrote:
On Jun 6, 2022, at 9:16 AM, Hylton Conacher (ZR1HPC) <hylton@...> wrote:
?Gentlemen and Ladies,
As a user of this list I have become overwhelmed with email from this list sometimes each including 7 attachments, each being in excess of 1MB.
PLEASE refrain from posting attachments onto the list as not all of the list users have superfast broadband or the ability to have their mailboxes bulging with attachments they might use.
PLEASE rather make use of the countless online storage facilities available and post a link onto the group.
If you are not prepared to use an online service, please keep the image attachments to yourself and send them to those who specifically request the attachment.
Thank-you
Yours in the spirit of the hobby and 73 de ZR1HPC
Hylton
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¡_. _._
--
Jack, W8TEE
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On Jun 6, 2022, at 9:16 AM, Hylton Conacher (ZR1HPC) <hylton@...> wrote:
?Gentlemen and Ladies,
As a user of this list I have become overwhelmed with email from this list sometimes each including 7 attachments, each being in excess of 1MB.
PLEASE refrain from posting attachments onto the list as not all of the list users have superfast broadband or the ability to have their mailboxes bulging with attachments they might use.
PLEASE rather make use of the countless online storage facilities available and post a link onto the group.
If you are not prepared to use an online service, please keep the image attachments to yourself and send them to those who specifically request the attachment.
Thank-you
Yours in the spirit of the hobby and 73 de ZR1HPC
Hylton
--
¡_. _._
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Gentlemen and Ladies,
As a user of this list I have become overwhelmed with email from this list sometimes each including 7 attachments, each being in excess of 1MB.
PLEASE refrain from posting attachments onto the list as not all of the list users have superfast broadband or the ability to have their mailboxes bulging with attachments they might use.
PLEASE rather make use of the countless online storage facilities available and post a link onto the group.
If you are not prepared to use an online service, please keep the image attachments to yourself and send them to those who specifically request the attachment.
Thank-you
Yours in the spirit of the hobby and 73 de ZR1HPC
Hylton
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On my v4, added in an amp board from some old computer speakers. Just hooked the power to the main connector and fed the output of the uBITX to input of the amp.
I removed the external controls, soldering in fixed resistors or jumpers and mounted it in the uBITX case.? Took off all the jacks. It is about as loud at 25% on the volume control as it was at full. Still the unit doesn't add any appreciable distortion or noise.?
My amp was not SMD construction.?
--
73
Dave
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My V6 presently has its original firmware.? I will be using
FLDIGI as a modem program, as the station computer (a Lenovo T410)
runs Linux Mint rather than "Bill's Bugdoze".? The sound card will
be a Rig Expert from? Kiev, Ukraine.? Its driver is already part
of Linux.
Gerry Sherman
Sentt by the Thunderbird
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Hoping to get a small poll of what folks are using for firmware
if they operator any digital modes.
I've been using??firmware
because of the faster display refresh, but CAT seems to be
mostly un-useable. I'm looking for other options to try which
has been successful for others.
Thanks - Mark
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uBitx has a Arduino with USB serial port. The CAT code is implemented in the firmware and it is very simple to read and understand. If CAT does not work for you, or you are doing something wrong, or if there is an issue, it will be possible to fix it, as the firmware of uBitx is free software.
I only use the uBitx with CAT, and disabled physical PTT, screen and other stuff. If the default Ashhar firmware works better for you, just swap the ubitx_cat.cpp from Reed's repo by the Ashhar one and try it out. But if it still does not work, then it could be some delay may be cause by the graphics functions...? just guessing here.
Btw, both Ashhar and Reed's firmware implements Yaesu FT817 CAT syntax (but you could use any "standard"... I implemented my own CAT code, which I think it is more sane and expose commands to change BFO, mastercal and other features add in ubitx' mods: )
Hardware wise, CAT (USB serial communication) definitely works.
Cheers,
Rafael
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On 6/5/22 17:54, mlucia@... wrote:
Hoping to get a small poll of what folks are using for firmware if they operator any digital modes.
I've been using because of the faster display refresh, but CAT seems to be mostly un-useable. I'm looking for other options to try which has been successful for others.
Thanks - Mark
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What amp is that? Is there a product number on Amazon or eBay?
------ Original message------ From: KM4TRT via Date: Sun, Jun 5, 2022 6:49 PM Cc: Subject:Re: [BITX20] AGC #v4
Hi All, I received my $1.69 amp from china and hooked it to the speaker output on my V4 so it only works when phones are unplugged.? Tremendous gain.? I may have to change the pot so it is less touchy.? I should be positioned now to cut in the ND6T AGC.? Still working on the LED idea. Andy KM4TRT
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Skip Davis
Vic WA4THR
MadRadioModder
_Dave_ AD0B