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Re: bitx and ubitx encoder replace ment
Alf Baranda
Thanks Robert, as soon as I have a little time I will try.
I've been thinking about it for a long time.
The truth is that I don't like dials with retention.
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Re: FS: QRP Gear
People sell qrp gear here from time to time. I am in a pinch and need to sell some gear. I didn't realize this was news or you took personal offense....
-- David N8DAH
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Re: FS: QRP Gear
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Re: Replacing firmware Ubitx V5 problems
Gary Anderson
Herman,
"30630 bytes uploaded" OK! 30630 looks correct for "UBITXV5_CEC_V1.122_NX_S.hex" :0A779C00732C207365742000220096 last ten (OA) bytes are loaded at address 0x779C this is an intelHEX file, Not a binary file. File size will not match bytes uploaded. It is unclear where you are in uBITX modifications. I did see that you own an enhanced Nextion. I suggest starting with the factory LCD display installed and test that you can successfully upload the CEC firmware that matches the factory supplied display. I believe it is UBITXV5_CEC_V1.122_16P (for a single 1604 display via the Parallel interface) Regards, Gary
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Re: Cool cheap oscilloscope for troubleshooting
Tom, wb6b
On Tue, Jul 30, 2019 at 08:12 AM, Ashhar Farhan wrote:
AD8307 based power meterThat is a good idea. I have some eBay boards with the AD8307 and similar chips already. Should be better than a diode and capacitor RF probe. The advantage of the tiny scope over a DVM, even if its bandwidth is only 1 Mhz, is in many places I may be probing in the SSB HF transceiver the signal will be envelopes modulated by the audio rather than steady state. The little oscilloscope will let me see the shape of the envelopes. The DVM will not. Sorry to the person that got malware. I've repeatedly clicked on those links, as well as when I went to the sites originally and have not had any malware issues with the links or when I originally visited the sites. But never know, the sites could have had a short term issue with being hacked and the sites fixing the issue. I assume if there was an issue it only affected one of them. You did not specify which one to be careful about. Tom, wb6b
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Re: Issues with ordering the BITX40
MVS Sarma
Instead, you cN buy a ubitx v5 itself.cost difference is not much.and you get latest design. Use only 40 as you needed Sarma vu3zmv
On Wed, 31 Jul 2019, 4:57 am , <dk3ts@...> wrote: It appears that the link for ordering a BITX40 on the HF Signals web site is broken. Clicking add to cart takes you to a generic Pay Pal page with no way to order.
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Re: uBITx V5 Stuck in Transmit
#ubitx
Yusuf A
Hey everyone,
i have the same issue, but i cant find my short? at which point were your solder blobs?
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Re: uBITx V5 Stuck in Transmit
#ubitx
MVS Sarma
is it a new one or working one. If new, please ensure that the KEY wire has 4.7K resistor from Vcc. If working , please give a gentle TAP on relay K1 . If Stuck, it would release. Perhaps you may need to change it. All the best sarma vu3zmv
On Wed, Jul 31, 2019 at 12:36 PM Yusuf A <bizim.yusuf@...> wrote: Hey everyone,
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Re: uBITx V5 Stuck in Transmit
#ubitx
Yusuf A
it a new one. it used to work very fine in a 3d printed case. after the instalation in a new case from sunil with the pcb frontpanel i am having this issue,
The 4.7K resistor is installed. i will check the K1 relay later. thanks so far
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Re: Antuino fix
Mike,
toggle quoted messageShow quoted text
It worked for me and Farhan responded telling me my parts were on the way. David J. Wilcox K8WPE’s iPad
On Jul 30, 2019, at 9:08 AM, Michael Aiello <n2htt.mike@...> wrote:
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Re: Cool cheap oscilloscope for troubleshooting
Very odd, not found any malware. McAfee and Malwarebytes.
toggle quoted messageShow quoted text
Raj
At 31-07-19, you wrote:
The links you provided are full of Malware !!! I have to re-do my windows 10 machine because of the malware.....
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CLKn frequencies for uBITx v5
Ravi Miranda
Hi,
I'm still trying to understand how the frequencies (3 of them) interact and produce the final output. Could I ask if some of you could send the frequencies (preferably nn.nnnnnn) of CLK0, CLK1 and CLK2 for 14MHz (USB) and 7MHz(LSB) so that I can compare the ones generated by my set. I understand that the BFO may differ due to the characteristics of the QER filter, but I can make allowances for that. What do others think? Kind regards, Ravi/M0RVI -- I'm here to add more value to the world than I'm using up.
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Re: Cool cheap oscilloscope for troubleshooting
Don--AE4DW
No malware indication here either..not sure exactly what link is suspected as being the culprit, but sounds like there was already an existing "infection"..
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Re: Cool cheap oscilloscope for troubleshooting
Don--AE4DW
As far as the scope options itself goes, I now realize Tom was referring to the JYE and clones I referenced when he mentioned 200 khz bandwidth, lol. Comparing specs, yes, that little matchbox unit seems to leave the JYE in the dust to some extent. The good thing is, for a 30 dollar investment and a definite impulse buy, you don't get too frustrated by limitations. I might need to read up on Tom's recommendation and try one out.
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Re: Cool cheap oscilloscope for troubleshooting
Roy Appleton
"Of all the cheap oscilloscopes we have tested, we are the most impressed with this DSO188. Despite the small dimensions, the scope is easy to operate and the oscillogram is easy to interpret. It is easy to live in practice with a service life of about ninety minutes with one battery charge. The only unfortunate thing about this beautiful device is that the DSO188 cannot be used to reliably measure the numerical values of the input signal. The manufacturer should have omitted this option, because a measurement function that is 'for reference only' is not very useful in practice. " Roy WA0YMH
On Tue, Jul 30, 2019, 1:50 AM Tom, wb6b <wb6b@...> wrote: Hi,
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Re: Cool cheap oscilloscope for troubleshooting
Ashhar Farhan
An easy way to extend the upper frequency range of an oscilloscope is to use a 'down converter' - a diode mixer driven by a VFO, like a direct conversion receiver. The mixer output is fed to the oscilloscope. About ten years ago, I wrote in a blog post that serious homebrewing needs a good scope. I must revise my claim. You need a spectrum analyzer of some sort. The reason is that our work is frequency domain. Our circuit blocks are filters, mixers, amplifiers and oscillators. All of them have inputs and outputs specified in terms of frequencies. It is this realization that led to the development of antuino. But that is a separate post..
On Wed 31 Jul, 2019, 6:10 PM Roy Appleton, <twelveoclockhigh@...> wrote:
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Re: FS: QRP Gear
No… Quite the opposite. I didn’t realize the moderator allowed it. Most groups won’t. Very good to know… I have rooms of stuff to sell and if its free (!) to advertise here… At least thanks for setting the precedent. I guess your closing should have been tipped me off (DUH!).
From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of N8DAH
People sell qrp gear here from time to time. I am in a pinch and need to sell some gear. I didn't realize this was news or you took personal offense.... N8DAH -- …_. _._
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Re: Cool cheap oscilloscope for troubleshooting
My club has a small knot of members who enjoy building stuff. Like everyone else, most of them can't justify the expense of $250 for a decent oscilloscope. One of our "serious" builders in the club upgraded his scope and donated his old scope to the club. Now anyone can use the club's scope for a project. So far, there's not been enough members wanting to use it at the same time to be a problem. This is now a benefit of being a member..access to some pretty decent test equipment. That same member gave a presentation on how to use the scope and it was well-received. I guess my point is: Instead of spending $25-$50 on a device and may or may not be sufficient to get the job done, consider acquiring a scope for the club. A new scope good to 100MHz is about $250, but hamfest, Craigs List, and other places have good used scopes at reasonable cost. Depending upon the size and makeup of your club, it might be a viable solution. Jack, W8TEE
On Wednesday, July 31, 2019, 10:43:48 AM EDT, Ashhar Farhan <farhanbox@...> wrote:
An easy way to extend the upper frequency range of an oscilloscope is to use a 'down converter' - a diode mixer driven by a VFO, like a direct conversion receiver. The mixer output is fed to the oscilloscope. About ten years ago, I wrote in a blog post that serious homebrewing needs a good scope. I must revise my claim. You need a spectrum analyzer of some sort. The reason is that our work is frequency domain. Our circuit blocks are filters, mixers, amplifiers and oscillators. All of them have inputs and outputs specified in terms of frequencies. It is this realization that led to the development of antuino. But that is a separate post.. On Wed 31 Jul, 2019, 6:10 PM Roy Appleton, <twelveoclockhigh@...> wrote:
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Re: FS: QRP Gear
Arv Evans
Topic and focus of this group is BITX designs, builds, modifications, support, and operation...but there is probably room for limited deviation from the theme and for individual sales of personal QRP equipment Maybe we could assume or hope that by selling your non-BITX rigs you are accumulating funds to buy a BITX? Mentioning your for-sale QRP item or related equipment web site is probably not a bad thing unless the opportunity is abused. The moderators do review what is being posted in an attempt to insure that the group stays relatively on-topic and is of value to BITX designers, builders, and operators. This BITX group includes a very diverse group of members from almost every country and background. Please keep this in mind when posting because we would not want to offend any of our members. Arv K7HKL _._
On Wed, Jul 31, 2019 at 8:54 AM MadRadioModder <madradiomodder@...> wrote:
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Re: FS: QRP Gear
I have been on here a long time both as a user of the bitx rigs and maker of bitx related items as my site shows. I would not normally post here for selling items outside of the bitx but I am in a real tight spot atm due to a few issues beyond my control and need to move a few items fast. I have sold most of the items and will go back to my normal bitx related posts please don't get the wrong idea. As Arv has said its been generally ok to sell items qrp related from time to time but don't abuse that or it may become a issue where they block, delete or mute it in the future. N8DAH
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