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Re: DDS/VFO output
#bitx40
I don't have a scope but I think that would be normal. In the uBitx Farhan drives the diode mixers from the Si5351 (3v output) via a small attentuator pad. In the Bitx40, Q7 to Q9 are left over from the analogue vfo. If you wanted to drive with a cleaner square wave you could rebuild it to be the same as the uBitx. If you want to really clean up the 7Mhz output (and get rid of the 7.2MHz birdie) you need to use the vfo at 19MHz and change the 12 MHz oscillator to be on the low side of the IF.
73 Brian. |
Re: uBITX Wire Up Drawing error
Don't know how i missed this, but i did and have been operating with my Volume pot wired wrong according to the wiring diagram. I can't say as I have noticed any difference since changing it. My audio chip ran cool before and after and sounded great. Oh well, I will sleep better knowing it's right now.
Joel N6ALT |
Re: uBitx Shipping question
¿ªÔÆÌåÓýI always use the cheap route Indian Post and everything not on back order has taken between 3 to 4 weeks tops. My last Bitx40 showed up maybe 2.5 weeks?Mine are sent to Killeen, Texas. James Lawrie On Feb 23, 2018, at 13:31, Terry Morris <terry.kb8amz@...> wrote:
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BITX QSO Afternoon/Night, Sunday, February 25, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere
John P
BITX QSO Afternoon/Evening, Sunday, February 25, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
Join us as we make contacts from BITX40 to BITX40 on 7.277 MHz in 40 meters! This is a worldwide event for BITX40 stations starting at 7pm in each time zone. To participate, call CQ BITX on Sunday, starting at?3PM and/or 7PM?your local time. The BITX QSO Night continues through the evening and conditions usually improve after sunset, so it is worthwhile to participate later in the evening. Suggested Best Operating Practices: Work at QRP power levels unless conditions require more power. Report your QSO's, discuss propagation, noise, signal reports, audio reports, antenna type, etc. in this thread. This is an undirected, scheduled event.? The BITX QSO Night relies on you to call CQ BITX to initiate contacts with other stations, so warm up that final and transmit a few calls on Sunday evening.? Talk to you then! |
I got my uBITX ... adventurous shipment !
Hi all, some of you have been writing about delay and others points about the uBitx shipment. If I do recall, my parcel was taken by the indian postal service around 9AM local time on december 16 2017? After twoday was shipped outside India. I could not trace any position around the world. Maybe a second hand italian postal camel was the carrier ... by end of december no news. Beginning of january till end no news. On Feb 2nd 2018 it arrived in Milan (1000km north from my QTH) at the international postal exchange. It was there till the 5th ... then no news. On the 13th it arrived at the postal customs site near Milan, 30km away. It was there till the 17th. then shipped. It arrived on the 20th in Bari, 40km north of my QTH. On the 21st the postman came to my house but I was not at home. The ticket left reported tha it was avalable on the 23rd february at my town main PT office ... but I had to show up with some money: nearly 20€ for import duty and nearly 8€ for postal handling. It did not get lost !!! Hi. 73 Gian I7SWX |
Re: Activity on ubitx.net
I just tried the link Ron and got the page. See the print-screen image. Terry - KB8AMZ Brimfield Twp, OH Linux User#412308, Ubuntu User #34905 OSs: LM18.1, Ubuntu 16.04, Puppy tahrpup64, Raspbian Orgs: PCL70-FOP, NTHS, ALUG, ARRL, PCARS#78, NAQCC#6668, NO-QRP-C, QRP-ARCI#8855 I chair the PCARS CW/QRP SIG and Linux for Hams SIG, second and fifth Tuesday my computer, my opinion On Thu, Feb 22, 2018 at 5:27 PM, w7hd.rh <w7hd.rh@...> wrote:
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Re: Activity on ubitx.net
Joe Puma
¿ªÔÆÌåÓýWhat happens when you ping the Domain name? What happens when you ping the IP address? What happens when you do a trace route to the IP address.Can you go to the IP address in the browser? On Feb 23, 2018, at 7:35 AM, w7hd.rh <w7hd.rh@...> wrote:
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Re: uBitx Shipping question
Gary Shriver, i ?ordered my ubitx January 12, 2018. I ordered the ubit40 and was told there would be a delay. Two weeks later I received email indicating the ubit40 was shipped and it arrived in Ohio 2 weeks later. Terry - KB8AMZ Brimfield Twp, OH Linux User#412308, Ubuntu User #34905 OSs: LM18.1, Ubuntu 16.04, Puppy tahrpup64, Raspbian Orgs: PCL70-FOP, NTHS, ALUG, ARRL, PCARS#78, NAQCC#6668, NO-QRP-C, QRP-ARCI#8855 I chair the PCARS CW/QRP SIG and Linux for Hams SIG, second and fifth Tuesday my computer, my opinion On Mon, Feb 19, 2018 at 2:13 PM, Gary Shriver <gshriver@...> wrote:
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Re: uBITX AGC - Adafruit TPA2016, A Success!
#ubitx
Thanks for taking the time to reply and posting the library files, Nik.? I certainly appreciate it.? I have replaced the files in my TPA2016 library with your modified files and recompiled my sketch.? The results are still the same - almost no audio.? As I said in my last post, connecting the TPA2016 module as a basic amplifier, with no firmware control, the audio is very low.? There is no background noise and only signals at S9 or better can be heard.? The same module installed in a BiTX40ver3 as a basic amp to replace the LM386 works well.? To me the issue appears to be low drive in to the TPA2016.? I'll keep digging and I'd definitely like to see more detail in regards to your implementation.?
Thanks again -- Mike |
Re: Distorted RX audio at higher volumes
#ubitx-help
¿ªÔÆÌåÓýThere ya go! ? From: [email protected] [mailto:[email protected]] On Behalf Of radiodoc43 ? I think that I had a similar problem to what has been described. Someone suggested that I check to make sure that I wasn't using a monaural plug for the speaker. Yikes!! That was the problem! |
Re: Distorted RX audio at higher volumes
#ubitx-help
I think that I had a similar problem to what has been described. Someone suggested that I check to make sure that I wasn't using a monaural plug for the speaker. Yikes!! That was the problem!
You must use a stereo plug, and wire it correctly, or you will short the audio output which will lead to the audio distortion at anything but lowest volume levels. It also explains the hot audio chip. Craig KC2LFI |
Re: uBITX without Raduino
Lawrence Macionski
Some of you have missed my point. I do not care if the Raduino is not the same as between BITX40 or uBITX.
I have plans on using uBITX without the Raduino it comes with. Why pay for something I'm going to throw in the junkbox or waste basket. I am sure many people will be inquiring to this way to buy in the near future. I recommend it be offered that way. as a sale of something is better than no sale at all. After all the intent is to experiment, modify, IMPROVE (key word here) de W8LM |
Re: uBITX Wire Up Drawing error
even the broken resistor could slowly be salvaged by using a thin wire instead of original wire. ?it would be possible? Regards MVS Sarma ? On Fri, Feb 23, 2018 at 9:33 PM, Walter <W9KJO@...> wrote: I dont have a 4.7k? but I do have a 5.1K? I wonder if that is close enough?? But it is a carbon resistor. |
Re: the new site
_ On Fri, Feb 23, 2018 at 9:27 AM, Carl Beck <carl@...> wrote: Ashhar:? We need a breakout just for uBITX.? Searching through BITX20 and BITX40 to find things on uBITX is a pain.? Please: can you do something about this? |
Re: the new site
Jack Purdum
Really? Buy one of these: and do it yourself. Researching things on the BITX family is a pain, but why do you want to transfer that pain to Ashhar? Jack, W8TEE From: Carl Beck <carl@...> To: [email protected] Sent: Friday, February 23, 2018 11:27 AM Subject: Re: [BITX20] the new site Ashhar:? We need a breakout just for uBITX.? Searching through BITX20 and BITX40 to find things on uBITX is a pain.? Please: can you do something about this?
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Re: uBITX Wire Up Drawing error
Glad you mentioned this.? I am in the process of wiring my ubitx up and sure enough this and the volume controls were wired per the diagram and wrong.
I rewiring the lead on the resister broke off :( Now I must see if I have a replacement in the house.? Will a carbon resister work?? probably dont have one at that value. May just have to order one and wait.? and I was so close to powering this radio up. Things happen LOL -- 73, W9KJO Walter |