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Re: bitx v6 is here
By morse reader, I actually meant software that reads out the screen in morse code. I had fooled around with many morse decoders. Nothing really works on the bands. CW skimmer is the only thing that works under contest conditions. So, if you want a morse code decoder that really works well, can adapt to any radio and needs no special hardware, then, spend a month, 20 minutes a day and practice at 30 wpm.? - f On Sat 14 Dec, 2019, 9:56 PM splat1956, <dnrabin7@...> wrote: Hi |
Re: bitx v6 is here
On Fri, Dec 13, 2019 at 03:41 PM, Dave Dixon wrote:
just ordered my V6 looking forward to receiving it next year..Im hunting around for a variable cw filter..any ideas guys.,Dave G0AYDI'll probably be ordering one of these: Here's another option if you want to spend more: John AE5X |
Re: bitx v6 is here
Hi
This is very exciting. I have been thinking a long time but have not purchased one because I was afraid that the soldering and wiring instructions would be confusing. There have been many posts by confused builders. This sounds great. Is there a morse code decoder built in or coming soon ? Your earlier post said " I have added a morse reader already. I shall finish integration to the user interface soon." Please let us know when that is incorporated. I am unlikely to upgrade the software-firmware once it is working and that would be a very nice feature. Great idea on the calibration with a known station signal for people without test equipment. Thank you very much for this great upgrade ! David W9PH |
NIB-uBITx Version 3, Un-Built
I have for sale an AS NEW In Plastic Shipping container uBitx Version 3. It was produced Prior to May, 2018 as it has the TDA2822 Audio Chip soldered to the PCB.
It is Un Built and AS New. Received 01/10/2018. Asking Price : $90.00 and $5.00 for shipping. Total: $95.00 Shipped to US Addresses. If international buyer, then actual shipping cost will be applied. Accept: PAYPAL. Money Order, or Check.? Please allow time for MO/Check to clear bank before shipping. Please send any questions to kevinemtid at sbc global dot net . Thank you Farhan for making a Great Rig! I am still working on my Bitx 40.??Yes I am a bit Behind in my projects!?But I Plan on acquiring a newer version uBitx in the future..? 73, Kevin NZ1I |
Re: Frequency calibration V5
I have not used it, so cannot attest to the accuracy.
To help speed up the process you might want to read this thread and try the calibration spreadsheet. /g/BITX20/message/72183?p=,,,20,0,0,0::Created,,calibration+spreadsheet,20,2,0,34330593 A take away from this that using the search function of the messages is one of the best ways to find out if someone else has already gone through the issue.? Being a relatively long time user of this site, and reading most of the messages, I can see that the same problems keep coming up. I would suggest that a new member guide be part of the prerequisite for membership.? Part of that instruction should be the best way to find information on the sire.? This would be both helpful to the new member, and reduce the amount of rehash that seems to go on.? I can state that having to reiterate prior solutions to new members does get old after 3 or 4 times.? Calibration is one of those that keep coming up.? I had to use the search function myself to find the above thread.? It would have sped up the process for Morris if he knew about that feature in Groups.io. Above are my thoughts, yours may be different, and that is OK 73 Evan AC0TU 73 Evan AC9T |
Re: uBITX CW offset woes
Hi Gordon,
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Either way we setup the dial is right. Either way is wrong. If we use it the wrong way. As we have both said, we have to know how the radio in front of us works if we are going to have good results. That means we don't have any part of our emission outside the band AND our signal is where the other ham can hear it. For SSB we must present the right sideband, too. Once upon a time I got a headache sorting it all out. At that time the headache medicines had a commercial showing Thor's hammer inside a human head striking an anvil complete with lightning strikes. If you remember those you will know it was at least a week ago:) 73, Bill KU8H On 12/13/19 8:35 PM, Gordon Gibby wrote:
Aargh. ?I may be wrong here! ? If I am, my apologies, it makes my head spin a bit. ? I¡¯ll have to go fiddle with the radio and try it out. --
bark less - wag more |
Re: Frequency calibration V5
Morris Ford
Hey Chuck, Sounds like your experience?is quite a lot like mine. One difference is that I have a digital frequency meter.? I use that to transmit on a known frequency and then compare it to the frequency on the meter. The biggest problem I had? was that I never was able to get any movement of indications during calibration. I was forced to do the calibrate ?a little then check where the frequency was after that calibration The biggest problem I had using the calibrate for a small number then check, then calibrate again and check, over and over. That procedure did move the frequency but in a very random way. For example, it would be a couple of thousand off, like xmit 28,000,300 and meter 28,003,678 and I would move by +100 in the calibration. The result would be somewhere around the target frequency but sometimes above the target and sometimes below. I would then calibrate again moving by -100 and it would not come back to the prior setting. Also if I did this with small shift numbers like 5 to 10 the results were very random. Finally, I just kept calibrating over and over with random small numbers until I just happened to land on a number that was less that 30 cycles off and left it that way. I am pretty sure that when I do the BFO calibration the frequency stuff will be off. The largest issue is that calibration does not work like the documentation states in terms of being able to shift calibration while observing where the calibration is. Because of this lack of function the repeated calibration method is very difficult due to the random effect of? calibration based on the number input during calibration. My suspicion is that there is a calculation problem when trying to come up with an actual frequency change. By the way I was using a calibration in the 10 meter area to keep the power level down going to the frequency meter. Maybe this stuff will help move to discussion about calibration forward a little. Morris K7LSV On Fri, Dec 13, 2019 at 3:04 PM CR <maccluer13@...> wrote:
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Re: #ubitx #ubitx-help #v5 #calibration Calibration procedure needed
#ubitx
#ubitx-help
#v5
#calibration
The best advice I can give is to go to hfsignals and and read the calibration info.? I searched on "how to calibrate ubitx" and got links to both.? That info, along with what you have, should get your unit calibrated.? If you have a specific problem during calibration, come back to the list.? Dale On Sat, Dec 14, 2019 at 1:02 AM Przemek <przemek.naganski@...> wrote: Anyone? Dale Hardin Elberta, AL? --
Dale Hardin, KS4NS Elberta, AL |
Re: V4 TX problems and new finals
#ubitx-help
If you have adjusted the bias then GATE cannot be 0V.
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Check voltage on R97 and 98 both sides of the resistors and see what you get. When KEY down the TX has RF in CW mode and readings will go haywire. At 14/12/2019, you wrote: opps (sorry, hit enter too soon) |
Re: #ubitx #ubitx-help #v5 #calibration Calibration procedure needed
#ubitx
#ubitx-help
#v5
#calibration
Anyone?
|
Re: V4 TX problems and new finals
#ubitx-help
Did you changed the setting of those "Blue" pots RV2 & RV3 after changing the IRF510. Even if you have no worries you could have reduced the gate voltage (remember turning those pots clockwise reduces the voltage/current? and anti clockwise increases them). since the output of U2 is toggling between 0 & 5V while TX your 5v regulator is still alive.
If you have not changed the setting of those pots RV2 & RV3. Then I would suggest to check the voltage reading at both side of R97 & R98. I feel you are very close to fix your radio, next task will be to fix the Gate voltage/current for those replaced IRF510. Please note I am referring to Gate "voltage/current" but the accurate way is to set the "Current". I personally feel the voltage reference is easy for quick check because for current check you need to set your multimeter in series with your radio power supply. 73 Anthony VU3JVX |
Re: V4 TX problems and new finals
#ubitx-help
opps (sorry, hit enter too soon)
q94 D? 15/15/7+- G? 0/0/-.09 S? 0/0/0 q95 D? 15/15/7->8+- G? 0/0/-.10 S? 0/0/0 With key down, the Gates move around a bit.? Thanks so much for all help here!!!!!! |
Re: V4 TX problems and new finals
#ubitx-help
Thank you!!!! For a Liberal Arts major, that means a lot!!!!
I tested U2 and it toggles between 0 and +5 on RX to TX. And the bias was set at ~100ma per 510. I did more tests on the IRFs using +15v for PA+ Resting RX,? ? ?TX no mod,? ? ?TX mod key down q:94 D? 15/15/7+- |
Re: V4 TX problems and new finals
#ubitx-help
Don, you did a good job. I won't worry about Q90 as you must have seen the document says not to worry about small variation. But I find it unusual that you don't see any Gate voltage for Q94/95 it should be around 4+ volts. Since you are not getting it for both the MOSFET? can you check if there is any voltage at 5v regulator U2 output pin, it should be 5V.
But if I remember correctly you did set the gate voltage to 100mA after changing the IRF510. 73 Anthony VU3JVX |
Re: V4 TX problems and new finals
#ubitx-help
Evan, Raj, Jerry, + Co.
I feel like I just finished Lab Class for Electronics 101.? My lab notes are attached for credit.? All the transistors measured with V+12.01 in TX mode w/no modulation and no PA V+ (lift the brown wire). Results follow your measurements, except three. 1&2:? ? Q94/95 Gates = 0 vs your 4.14.? When I apply PA V+ (connect brown to +15v), the Drain = 15, Gate =0, Source=0. Note: I checked U2, and output toggles 0/5 between RX/TX. 3:? ? ? ? Q90 Emitter is 2.8 vs your 3.4. |
Re: bitx v6 is here
Hi,
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I haven¡¯t found calibration instructions. Assembly, circuit descriptions (which are fantastic by the way), yes¡but somehow I¡¯ve missed the calibration instructions. Buddy Brannan, KB5ELV - Erie, PA Email: buddy@... Mobile: (814) 431-0962 On Dec 13, 2019, at 9:58 PM, Ashhar Farhan <farhanbox@...> wrote: |
Re: bitx v6 is here
Did you have to re-design the Radiuno connector locations to fit the new display? On Fri, Dec 13, 2019 at 8:58 PM Ashhar Farhan <farhanbox@...> wrote:
Dale Hardin Elberta, AL? --
Dale Hardin, KS4NS Elberta, AL |
Re: bitx v6 is here
We have left the old traces, connectors etc in exactly the same place. The software is backwards compatible with the previous versions. If your board has 12 mhz, you have to just edit that one line to change the second IF. I have also written a new calibration rountine that makes it easy to calibrate without needing any instrumentation in the shack. You set the dial to the frequency of a known station, get into calibration mode, and then keep spinning the tuning knob until you are zero-beat with the known signal. 73, f On Sat 14 Dec, 2019, 4:43 AM Rick Green, <rtg@...> wrote: What I think he meant, and what I was wondering, is whether you added any new |
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