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Re: Loss of CW Side tone When load N8ME Firmware.uBITX V6
Chuck, koodos on what Dave,K8WPE said. This is a Hobby. And even if it wasnt, We all started from the ground up. I remember when i first was licensed,my young brother and sister made fun of me by grabbing the ham out of the fridge everytime i set up my equipment to operate. They would say"ohhhhhhhhhhhhhh you want some mustard and cheese to go with that HAM?" Yea with their distractions,i fried some gear,but luckily it was tube type and was more forgiving.As for the solid state stuff,YEP fried loads of diodes in the power supply sections due to not ohming out the wires on the new plug i soldered on the power cord.IT HAPPENS more than anyone here wants to admit.I have even bricked a newer rig . got in there and reprogrammed a chip so i could have warc bands, and wala!! dead as a doornail. wound up having to order that particualr chip off the manufacturer . that chip cost more than the radio it seemed at the time. OOPS. We all have had an "OOOPs" in our tenure ar Amateur Radio Operators. Thats what really binds us all. telling the stories of wiping the sleep or smoke out of your eyes while trying to finish a project at 2am or whatever,and watching the smoke roll out again of the project ohh so softly.HI HI. No question is stupid, and no solution is the solution to end all problems. if it was we would never get past Spark gap transmitters and crystal radio receivers.:) Have fun, relax, and enjoy your? hobby.? There are probably about 95% of hams who build and experiment who have had OOPS times too. This is what separates the operators from the ones who actually USE their knowledge from their license . welcome 73 David ac9xh
On Thursday, September 8, 2022 at 08:40:46 AM EDT, david todd via groups.io <ac9xh@...> wrote:
Evan, I have N8ME software installed on my ubitxes,and i must say it makes the ubitx a new radio all over again. It cuts out the latency ,or delay from key close to transmit. Also it seems to me on my radio,it reacts faster. Also it eliminates the frequency jumps when tuning. Mine,is smooth. 73 David ac9xh
On Thursday, September 8, 2022 at 05:12:46 AM EDT, David Wilcox K8WPE via groups.io <djwilcox01@...> wrote:
Chuck, quit apologizing for errors!!! This is a HOBBY! ?Most of my mistakes, errors of omission and commission are now called learning experiences. ?We learn best that way. I have great tales and one of them is reverse connecting a battery (with a big red price tag stuck near the negative pole of the battery¡. You can tell the rest of the story). ?An early Chinese YouKits radio went up in smoke because of no reverse voltage protection. ?I learned a lot that late night. Now I go to bed at 9:30 PM and paint all bought batteries with a big red patch near the + pole and remove all price tags and a few other things. ?The last radio item I reversed the power to was a completely different type of error but it did have a reverse protection diode in the circuit and I had a fuse in the line¡.. just had to replace the diode¡. My first effort at changing a SMD diode¡.. Was very lucky that time. We all make errors and I have many other tales since 1960 when I was first licensed. Dave K8WPE since 1960? David J. Wilcox¡¯s iPad On Sep 7, 2022, at 11:13 PM, Chuck Eglhaut <ceglhaut@...> wrote:
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Re: Loss of CW Side tone When load N8ME Firmware.uBITX V6
Evan, I have N8ME software installed on my ubitxes,and i must say it makes the ubitx a new radio all over again. It cuts out the latency ,or delay from key close to transmit. Also it seems to me on my radio,it reacts faster. Also it eliminates the frequency jumps when tuning. Mine,is smooth. 73 David ac9xh
On Thursday, September 8, 2022 at 05:12:46 AM EDT, David Wilcox K8WPE via groups.io <djwilcox01@...> wrote:
Chuck, quit apologizing for errors!!! This is a HOBBY! ?Most of my mistakes, errors of omission and commission are now called learning experiences. ?We learn best that way. I have great tales and one of them is reverse connecting a battery (with a big red price tag stuck near the negative pole of the battery¡. You can tell the rest of the story). ?An early Chinese YouKits radio went up in smoke because of no reverse voltage protection. ?I learned a lot that late night. Now I go to bed at 9:30 PM and paint all bought batteries with a big red patch near the + pole and remove all price tags and a few other things. ?The last radio item I reversed the power to was a completely different type of error but it did have a reverse protection diode in the circuit and I had a fuse in the line¡.. just had to replace the diode¡. My first effort at changing a SMD diode¡.. Was very lucky that time. We all make errors and I have many other tales since 1960 when I was first licensed. Dave K8WPE since 1960? David J. Wilcox¡¯s iPad On Sep 7, 2022, at 11:13 PM, Chuck Eglhaut <ceglhaut@...> wrote:
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File /uBITX_6_N8ME_2_VU3GAO_Mods.zip uploaded
#file-notice
Group Notification
The following files and folders have been uploaded to the Files area of the [email protected] group. By: Nitin William <vu3gao@...> Description: |
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Re: File /uBITX_6_N8ME_2_VU3GAO_Mods.zip uploaded
#file-notice
Hello Howard,
I have fixed the minor bug of Keyer not saving. Update file has been upload to the same location in the files section. Please do try and let me know. Thanks Nitin William VU3GAO |
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Re: Loss of CW Side tone When load N8ME Firmware.uBITX V6
¿ªÔÆÌåÓýChuck, quit apologizing for errors!!! This is a HOBBY! ?Most of my mistakes, errors of omission and commission are now called learning experiences. ?We learn best that way. I have great tales and one of them is reverse connecting a battery (with a big red price tag stuck near the negative pole of the battery¡. You can tell the rest of the story). ?An early Chinese YouKits radio went up in smoke because of no reverse voltage protection. ?I learned a lot that late night. Now I go to bed at 9:30 PM and paint all bought batteries with a big red patch near the + pole and remove all price tags and a few other things. ?The last radio item I reversed the power to was a completely different type of error but it did have a reverse protection diode in the circuit and I had a fuse in the line¡.. just had to replace the diode¡. My first effort at changing a SMD diode¡.. Was very lucky that time. We all make errors and I have many other tales since 1960 when I was first licensed.Dave K8WPE since 1960? David J. Wilcox¡¯s iPad On Sep 7, 2022, at 11:13 PM, Chuck Eglhaut <ceglhaut@...> wrote:
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Re: Loss of CW Side tone When load N8ME Firmware.uBITX V6
I feel stupid. Evan in your reply to me to make sure CW was selected , Then which it was but you said about checking the config. I did here I was suppose to be Iambic B and it was in Winkey . Set it to Iambic B and save it¡¯s working.? Thanks for your help it was all my stupidness.? uBITX seem be working proper I have side tone when I am sending CW. Thanks Evan 73 Chuck K3CWE? |
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Re: Daylight again schematic error(?)
What ever the reason be, when I switched the PTO and RF input, the receiver went from dead to impressive.? I have rebuilt the two mixers three times and ended up with the same results. I finally gave up on the J310 devices and put in 40673 MOSFETs. Doing the 40673 devices resulted in a decent sounding receiver with MDS at 1 uv. However, doing that modification was a deviation from your original design and I wanted to duplicate what you put out to us. When I built the first mixer I used the bobbin toroids for the bandpass filter. The attenuation of that filter was roughly 9 db. The sensitivity of the receiver had a MDS 30 uv. I made an identical filter using Fe cores. That was about the same. I knew something was not correct. I installed a QRP labs, 40 meter bandpass filter that had an insertion loss of 2 db. The QRP labs BP filter uses link coupling for both input and output. Putting that in the front end of the daylight RX improved the sensitivity to 3uv MDS. This gave me the idea to switch the signals into the mixer, which results in a working Daylight RX.? I know for a fact my build is correct so I thought, just maybe,? an oversight in the schematic. Electronics is down right FM. Barry On Wed, Sep 7, 2022, 8:35 PM Ashhar Farhan <farhanbox@...> wrote:
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Re: Daylight again schematic error(?)
Barry, The 1K resistor? at the input of the RX mixer provides the correct termination for the bandpass filter. The bandpass filter is terminated with 1K on the mixer side and 50 ohms on the other side. If you sweep it with a nanovna which provides 50 ohms on both ends, the plot is bound to show much loss as the ending resonator is loaded down. As I had stressed in my talk, we let go of the 50 ohms standard to simply things. This is one of those gotchas. On Thu, Sep 8, 2022, 5:37 AM barry halterman <kthreebo@...> wrote: Group, I believe there is an error in the schematic of the daylight again radio. The RX first mixer has the PTO going to the gate with the high impedance input, while the RF input is going to the gate with the 1K resistor.? |
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Daylight again schematic error(?)
Group, I believe there is an error in the schematic of the daylight again radio. The RX first mixer has the PTO going to the gate with the high impedance input, while the RF input is going to the gate with the 1K resistor.?
I think they need to be reversed.? The band pass filter should be terminated into a high impedance and not low impedance. A low impedance termination will degrade the filter and the sensitivity becomes poor. This is what I have experienced in this build after many hours of tinkering. Plots of the filter show about 10db loss when terminated into 50 ohms. I have not done plots with a higher termination impedance. In my build, flipping the two signals improved the performance dramatically. I have not increased the PTO gate termination resistor from 1K to a higher value. The PTO signal measured 3.4Vp-p with the 1K. All in all, the receiver sounds pretty darn good!! 73 Barry |
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Re: Sbitx manual
¿ªÔÆÌåÓýThanks, Allen! ?I just finished working a trial for the physics test tomorrow. Will have to compare my answers to the students to see if I got it right!!I think I bit off a little too much this year... amazingly, the sixth grade students are dying to learn Morse code and I found a person who can take that over for me, ?to free me up for other courses. ?I Showed the students the sBitx but it went right over their heads...., reasonable for sixth graders but still they¡¯ll remember it Gordon On Sep 7, 2022, at 18:09, Allen Hill via groups.io <Allenanalog1@...> wrote:
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Re: Sbitx manual
Gordon, I want to thank you for all you do for Amateur Radio. You are a busy man and I hope you continue to be. I always appreciate your insights and inputs. Keep it up! 73 On September 7, 2022, at 4:46 PM, Gordon Gibby <docvacuumtubes@...> wrote: This was a project from a good bit ago, (April 2021) ?but here¡¯s the link to the shared project on . Pcbway.con I checked that out just now and apparently there is a button there where you can download the Gerbers yourself. That scares a lot of people away because they¡¯re not quite sure how to deal with them but making the project a shared project on their website made it duck super simple for any group to build this. ? I seen there have been 370 views, but I bet only a handful, if any , have ever built it. ? It looks like I might get a pittance from it but as far as I know I¡¯ve never gotten anything. Take the Gerbers and have them made somewhere else so you don¡¯t ever give me a penny, please! ? I have paid as much as $50 a board elsewhere!!? I¡¯m amazed at people like Ashhar who are willing to deal with the amateur radio community and provide experimental products. ? Not my cup of tea! 73? Gordon Gibby Kx4z? On Sep 7, 2022, at 15:33, david todd via <ac9xh=[email protected]> wrote:
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Re: Sbitx manual
¿ªÔÆÌåÓýThis was a project from a good bit ago, (April 2021) ?but here¡¯s the link to the shared project on . Pcbway.conI checked that out just now and apparently there is a button there where you can download the Gerbers yourself. That scares a lot of people away because they¡¯re not quite sure how to deal with them but making the project a shared project on their website made it duck super simple for any group to build this. ? I seen there have been 370 views, but I bet only a handful, if any , have ever built it. ? It looks like I might get a pittance from it but as far as I know I¡¯ve never gotten anything. Take the Gerbers and have them made somewhere else so you don¡¯t ever give me a penny, please! ? I have paid as much as $50 a board elsewhere!!? I¡¯m amazed at people like Ashhar who are willing to deal with the amateur radio community and provide experimental products. ? Not my cup of tea! 73? Gordon Gibby Kx4z? On Sep 7, 2022, at 15:33, david todd via groups.io <ac9xh@...> wrote:
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Re: #sbitx - an ugprade kit is on the way
#sBitx
¿ªÔÆÌåÓýI am not really worried because the buck converter is about 5€ and one irf24 from Infineon is about 0.5€ If I buy from a standard distributor in Germany, so postage for Ashar is probably more expensive than that.?Vy73 de Rolf, DL8BAG currently away from my sBitx #66 Am 07.09.2022 um 18:20 schrieb Stephen KO4CVU <goinfishin1952@...>:
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Re: Sbitx manual
JIm, I agree with your points and also agree with Gordons, too. I would suggest if you can buy them for $5 from china, thats pretty cheap on the price. And if you can bundle them into a nice price, you could buy a boatload and resell them to other hams and make some nice money. Im a tight budgeted ham who would probably either dig into my junk box . I try not to buy every? new board that comes out on the market unless its revolutional to my setup.HI HI.I can only afford so much on my fixed income. Just depends on which path we each travel down. Also, if Gordon is releasing the gerbers and such for free, WOW. Any tech stuff thats free is great. Anyway see you both on the bands. By the way, My wife says IM THE ORIGINAL GRUMPY MAN .hi hi 73 David ac9xh
On Wednesday, September 7, 2022 at 02:14:15 PM EDT, Gordon Gibby <docvacuumtubes@...> wrote:
Dear self-described grumpy old man! What a hoot! ?I think you missed a few details? I don¡¯t make these boards at all.? I don¡¯t sell them either - so maybe that¡¯s why I don¡¯t advertise a price??? If you want these boards you¡¯ll have to go to pcbway.com and order them from them! ?(I¡¯m not crazy enough to get into the business of selling boards, I retired from being a physician and now I teach AP courses for chicken feed, for the joy of helping youngsters¡ª it¡¯s great fun. A lot of work too!! I have to create two exams by tomorrow I¡¯m pretty sure that pcbway.com has a really attractive price for five or 10 boards and that may be what you found, but I really don¡¯t know because it¡¯s been a good time since I ordered from them. ?I bet you can find the Gerbers because I probably made those available for free also, and thus you could have these boards made in the United States for 10 times that price. ?Or you could photo resist and make them yourself. ? Or it¡¯s a simple enough project that you could just make it on any kind of perfboard But I¡¯m sorry that you were upset that I made the Gerbers and the project available for free,.... and that you might need to join with a few other folks to take advantage of volume pricing from commercial vendors. ? ? ? I think we ordered maybe 30 boards and have probably built 2/3 of them already to protect a slew of expensive gear here in the United States, probably well exceeding $125,000. ? Most of it not even ours! We did it to protect the gear of our county. what a hoot! I hope you have a great day, A little humor at our own selves in our own foibles goes a long way Gordon? On Sep 7, 2022, at 14:02, Jim Strohm <jim.strohm@...> wrote:
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David Wilcox K8WPE
Rolf Schroeder
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