Interesting ubitx can receive FM ?? Could use better headphones though still would expect the sound quality to better.? Powerful signals like my nearby commercial radio come in a lot better, intelligible but a little off but almost any other signal doesn't come in very intelligible at all.
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Re: Reasonable cost Spectrum Analyzer for Ham use.
#ubitx
Hi guys, I've owned an RF Explorer for almost 2 years. It's an excellent instrument (and low cost <$200).? It does take a little getting used to the menus and setups. But if you connect it to a PC the user software is excellent.? I'm only a hacker with programming, but have been able to use the API interface and automate routines with Python. Bottom line I would highly recommend these units for Ham work (or any work within the units freq range).
But it's not a Rigol, etc. If you are used to standard SA buttons, functions, screens, the RF Explorer isn't that. But it's <$200!
Thanks!
KI4QCK
On December 16, 2018, at 5:34 PM, "Uwe , DF1UB" <jento23@...> wrote:
Thats maybe interesting Tom:
Uwe
DF1UB
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Re: Reasonable cost Spectrum Analyzer for Ham use.
#ubitx
Thats maybe interesting Tom:
Uwe
DF1UB
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Re: Missing front panel socket board for amaterradiokits.in uBitx case
THANKS Gary and Ken! I don't know how I missed the front panel board in my search of Sunil's www page - the product description explained how the early cases didn't include the board. I ordered the board AND the wiring harness to make a total of $25 and satisfy their minimum order requirement.
I did delve a bit into the wiring and PROBABLY could have done it without the board, but this will make a easier and cleaner installation. I am looking forward to getting it all built and working and then delving into the hardware and firmware mods...which will be more fun for me than putting it all together at once. I am grateful for this group and the wealth of knowledge and experience here. THANKS!
Have a great holiday season.
- 73,
-John, K7HV
..
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Re: Reasonable cost Spectrum Analyzer for Ham use.
#ubitx
I bought one right after I bought my uBitx in September of last year.? Was a learning curve to understand the use of the instrument, from the standpoint of setting the center and span to capture the interested frequencies.? Using it with a PC and the free software is really the way to go.? The PC makes it very easy to do the adjustments and to see the history in a waterfall display.
The unit did show that my uBitx v4 was OK for 40m, and borderline on 20m.? It is much more useful than an SDR dongle and a PC, as it is not as susceptible to front end overload.
I do reccomend the device, however I am not an expert on using an analyzer, so it would be good for someone who started with this and graduated to a "Rigol" to comment on the usefulness of the device.
My 2cents Evan AC9TU
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Hi Dave,
There is some FM allowed on 10 meters, higher than 29 MHz, and I wondered if you had yours working to at least receive FM. The xtal filter might make that impractical (I gave it some thought). Mine is about 1700 Hz wide. That is tight for SSB but with fine tuning steps I can get them right in. More QRM gets blocked. I have the CEC software and do my hunting with 50 or 100 cycle steps and then go to 10 Hz tuning steps to listen - fine tuning.
I always use cans for serious listening and QSOs. We can hear right down into the noise with cans and not with speakers. Hi-Z cans help reduce the "sonics", the high frequency background noise or hiss. I have some of those, too. If you get the chance, give a set of the Hi-Z cans a try and switch back and forth between the Hi-Fi cans and the Hi-Z. They also help on SSB or AM but not as much for music. We are not supposed to be sending music, at least not in the USA. Don't use the Hi-Z with your stereo set:)
I wonder if your BFO level is maybe a little soft. Or the incoming signals are little strong. A strong signal just outside the xtal passband can be hurtful. Try reducing the incoming signals (it's easier than increasing the BFO). Use a step attenuator. A couple of ten decibel steps ahead of the receiver input is good enough and you won't need lab grade attenuators:) Attenuators make an enormous difference listening to low level signals in *all* of my radios. Increasing the attenuation (and reducing the signal levels) seems counterintuitive when we listen for very weak signals. But many's the time cranking in 10 decibels of attenuation makes very weak signals audible right next to a blowtorch. Sometimes an additional 10 decibels is even better. And sometimes not. Some times QRM just plain puts us out of the game.
Good luck and 73,
Bill KU8H
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On 12/16/18 2:12 PM, Dave Space wrote: Sorry not deviation meant amplitude. 1khz signal 50% amplitude.
I also did a zero beat against a 7.150MHZ signal 1khz using my signal generator to transmit and then listened on my commercial radio and ubitx to sync the 1khz sound.? BFO sounds perfect at the default.? ?I also noticed through the earphones I could hear as little as 20-30mv signal via ubitx I wasn't able to easily hear on the speaker of my yaesu.
Even still I can't pull in intelligible ssb conversations on the ubits that my yaesu ft-991 can easily hear even using the same antenna 40/20m fan dipole.
--
bark less - wag more
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Reasonable cost Spectrum Analyzer for Ham use.
#ubitx
Hi,
I've been busy with client projects as of late. Looks like most of the uBitx issues will be solved by the time I get back to playing with it. That is good.
I ran across this fairly low cost spectrum analyzer?.
Anyone with any experience or ideas on how viable this spectrum analyzer would be for Ham use? It has been around long enough that I wonder if there are other similar analyzers that may exist now.?
Even if all the uBitx issues get resolved, it has illustrated how valuable a spectrum analyzer can be to the Ham's measurement tools. I think it would be great to add a spectrum analyzer to my test equipment for future projects and experimenting. I might cough up the $1K+ for one, but rather have one that cost less if it can do most things a Ham would be interested in.?
Tom,
wb6b
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Re: Help to enable S-meter in KD8CEC v 1.071
You will want to move to the current firmware and memory manager (currently 1.1 but 1.097 will work as well).? I'm not sure there was proper S-Meter function in 1.07x.
I'm using V1.1 and enabling the S meter was as easy as connecting to Raduino, reading, checking the box, and writing the change to the Raduino.
Andy, KG5RKP
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On Sun, Dec 16, 2018 at 11:36 AM, PeteWK8S wrote:
I have a working S-meter under VK2ETA version of KD8CEC firmware. I am using a 1602x2P display. However, when I implement KD8CEC's v 1.071 I cannot figure out how to enable S-meter in the display.
YES I have set up the S-meter in his Memory Manager BUT is does nothing and there isn't even a area on the display open where the S-meter could show....meaning where the S-meter should be the VFO B contents is displayed. I've searched through the code but don't see where to enable the display of the S-meter.
Any ideas? ?Please note again my S-meter does work under VK2ETA's version so it's a matter of the firmware.
Pete WK8S
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Sorry not deviation meant amplitude. 1khz signal 50% amplitude.
I also did a zero beat against a 7.150MHZ signal 1khz using my signal generator to transmit and then listened on my commercial radio and ubitx to sync the 1khz sound.? BFO sounds perfect at the default.? ?I also noticed through the earphones I could hear as little as 20-30mv signal via ubitx I wasn't able to easily hear on the speaker of my yaesu.??
Even still I can't pull in intelligible ssb conversations on the ubits that my yaesu ft-991 can easily hear even using the same antenna 40/20m fan dipole.
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Re: Missing front panel socket board for amaterradiokits.in uBitx case
Sunil is not sending goods with a value less than $25 at the moment. Something to do with DHL and no India post.
He will cancel the order if it's less. It has just happened to me.
73s Ken
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Hi Dave,
Did I miss something? Deviation is an FM measurement unit. I didn't notice that you are using your uBitx for FM. Are you doing that with SDR software?
73,
Bill KU8H
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On 12/16/18 1:22 PM, Dave Space wrote: Format: No Signal,(comma) Signal peak to peak volts (i.e. 1 mv (no signal) , 2mv signal generator on)
Input 7.150MHZ signal 1khz deviation 30 mv at antenna direct connection
Q10
b 70mv, 70 mv
c 8mv,? 10mv
~50MHZ
Q11
b 12mv, 14mv
c 100mv, 108mv
Q12
b 16mv, 12mv
c 114mv, 120mv
Q30
b 64mv, 130mv
c 24mv, ? (have to go back and measure)
6-35MHZ
Q31
b 24mv, 32mv
c 75mv, 220mv
?11-32MHZ
Q32
b 22mv, 22mv
c 88mv, 230mv
6-50MHZ
Q71 was interesting could see a double helix sine wave on one of the terminals
b 430mv, 15 volts
c 32mv, 65mv
32-50MHZ range
--
bark less - wag more
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Format: No Signal,(comma) Signal peak to peak volts (i.e. 1 mv (no signal) , 2mv signal generator on)
Input 7.150MHZ signal 1khz deviation 30 mv at antenna direct connection
Q10??
b 70mv, 70 mv
c 8mv,? 10mv
~50MHZ
Q11
b 12mv, 14mv
c 100mv, 108mv
Q12
b 16mv, 12mv
c 114mv, 120mv
Q30
b 64mv, 130mv
c 24mv, ? (have to go back and measure)
6-35MHZ
Q31
b 24mv, 32mv
c 75mv, 220mv
?11-32MHZ
Q32
b 22mv, 22mv
c 88mv, 230mv
6-50MHZ
Q71 was interesting could see a double helix sine wave on one of the terminals
b 430mv, 15 volts
c 32mv, 65mv
32-50MHZ range
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Re: Missing front panel socket board for amaterradiokits.in uBitx case
John,
Sunil sells his front board / wiring kit a la cart for $15 + shipping.
No difference in v3/v4 board wire-up.
Regards,
Gary
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Help to enable S-meter in KD8CEC v 1.071
I have a working S-meter under VK2ETA version of KD8CEC firmware. I am using a 1602x2P display. However, when I implement KD8CEC's v 1.071 I cannot figure out how to enable S-meter in the display.
YES I have set up the S-meter in his Memory Manager BUT is does nothing and there isn't even a area on the display open where the S-meter could show....meaning where the S-meter should be the VFO B contents is displayed. I've searched through the code but don't see where to enable the display of the S-meter.
Any ideas? ?Please note again my S-meter does work under VK2ETA's version so it's a matter of the firmware.
Pete WK8S
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That should be 'good enough'. You might have to pay a little more attention if you want to use the rig in a frequency measuring contest. That isn't necessary for just everyday operating.
73,
Bill KU8H
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On 12/16/18 11:37 AM, Woody wrote: Pretty much according to the instructions...? Set the CAL to zero beat against my 20 MHz reference standard.? Then adjusted the BFO until got a good RX signal.? First used a signal from another local SSB rig tuned to the same freq.? Then tweaked a bit more listening to on the air signals...
On 12/15/2018 22:48, Bill Cromwell wrote:
Hi,
How did you do with the "calibration" process?
73,
Bill? KU8H
--
bark less - wag more
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Pretty much according to the instructions...? Set the CAL to zero beat against my 20 MHz reference standard.? Then adjusted the BFO until got a good RX signal.? First used a signal from another local SSB rig tuned to the same freq.? Then tweaked a bit more listening to on the air signals...
toggle quoted message
Show quoted text
On 12/15/2018 22:48, Bill Cromwell wrote: Hi,
How did you do with the "calibration" process?
73,
Bill? KU8H
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I bet that Wiki is cool but it sure is nice to get the info LOL
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Does any one have their oscilloscope peak to peak volts measurements for the receive transistors (with a specific signal generator volts/ of of course)???
Q10,11,12 base and collector and Q30,31,32?
I can measure and post mine.? I noticed their is very minimal gain at Q10 and Q30, almost so small my scope can't really see much difference.
(My scope only goes down to 20mv/div I think)
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The latest version is v1.28.1, but v1.27.7 should also work OK.
It should work even without any of the modifications as described in the instructions. However, I would recommend to at least install the function button. Keeping the function button pressed during power on will restore all settings to the default values.
73 Allard PE1NWL
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Re: Version 4 bitx squealing after nextion upgrade.
Evan, ?it is simple. ?I uploaded a file? refresh_eeprom.ino ( i GOT IT FROM MY CLOSE FRIEND OM MAHESH? VU2IIA AND WORKED FINE FOR ME)
1. place the usb card and connect it to your laptop. Of course I use windows. 2. call for the file (after unzipping AND PLACING IN A FOLDER) 3. COMPILE AND LOAD ONCE UPLOADED . ?YOUR JOB IS DONE AND THE EEPROM IS CLEARED. ?NOW YOU CAN LOAD STOCK FIRMWARE FRESH AND MANAGE YOUR rADUINO AND UBITX.
?ALL THE BEST ?
On Sun, Dec 16, 2018 at 4:25 AM Evan Hand < elhandjr@...> wrote: Sarma,
I am confusing the thread with the prior email.? ?I really was asking the question if you meant by "clearing the contents with ino" in your original post to load another .ino program.? You have now explained that you meant to recompile the .ino file from CEC using the Arduino developer program to load into the nano.? To me that was not clear.
Apologize if I am confusing the issues, rather than helping.
Based on the posts to sell the auxiliary equipment from Uniflight58, I assume that he is giving up.
Again, sorry to all that I could not help more
Evan AC9TU
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Ken T VK2HXX
Allard PE1NWL