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#ubitx-help 11 messages
#ubitx-help
Hello Gary, Here the data sheet NJM2073.pdf (digikey.com) For the original mounting see my schematic With the diode and capacitor C30 you can "simulate" an AGC. I have for my test eliminated the diode
Hello Gary, Here the data sheet NJM2073.pdf (digikey.com) For the original mounting see my schematic With the diode and capacitor C30 you can "simulate" an AGC. I have for my test eliminated the diode
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By
Gerard
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uBITX Scratch Build Volume Issue 3 messages
#ubitx-help
#ubitx
#homebrew
#v5
Hello Chris Thanks for your reply, yes at the time I write this letter, I also found, that the big elco capacitor Vcc filter is mandatory. I also experiment that one 1000uF is needed. My AF amp is LM3
Hello Chris Thanks for your reply, yes at the time I write this letter, I also found, that the big elco capacitor Vcc filter is mandatory. I also experiment that one 1000uF is needed. My AF amp is LM3
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By
indrasung@...
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uBitX CAT problem on 40m 11 messages
#ubitx
#ubitx-help
#ft8
All, Two remarks: a) My uBITX v4, is transmitting little power at 40m in FT8, approximately 0.3W; b) I noticed that it does not indicate the transmission frequency, but it indicates the reception freq
All, Two remarks: a) My uBITX v4, is transmitting little power at 40m in FT8, approximately 0.3W; b) I noticed that it does not indicate the transmission frequency, but it indicates the reception freq
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By
Rubens Kamimura
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V4 board, tuning off by 1k, audio low, no luck with audio amp. 15 messages
#v4
#ubitx-help
#audiocircuit
Brian, Evan has explained the slider function if you have a nextion display. Using the memory manager you can also do the same thing. There is a selection for the 1st IF (45mhz) calibration. Evan show
Brian, Evan has explained the slider function if you have a nextion display. Using the memory manager you can also do the same thing. There is a selection for the 1st IF (45mhz) calibration. Evan show
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By
barry halterman
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uBitX V6 no transmit power 111 messages
#ubitxv6
#ubitx-help
#tx
Looks like Curt added 330pf across C81 and got good results: https://groups.io/g/BITX20/message/84646 https://groups.io/g/BITX20/topic/70906819#80608 I'm very curious what TP1 looks like after this fi
Looks like Curt added 330pf across C81 and got good results: https://groups.io/g/BITX20/message/84646 https://groups.io/g/BITX20/topic/70906819#80608 I'm very curious what TP1 looks like after this fi
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By
Jerry Gaffke
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uBitx v4 Component Values D15 and D16 8 messages
#ubitx
#ubitx-help
#v4
Congraturation -- 73's PY2PVB Em qua., 13 de jan. de 2021 às 11:39, Gary.ingle via groups.io <Gary.ingle@...> escreveu:
Congraturation -- 73's PY2PVB Em qua., 13 de jan. de 2021 às 11:39, Gary.ingle via groups.io <Gary.ingle@...> escreveu:
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By
Rubens Kamimura
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ubitx v6 help needed - 3 messages
#ubitx6-help
#ubitx-help
Frank HEY - That's the one I've ordered so it looks like I made a good choice JOHN Sent from Samsung Mobile on O2 Get Outlook for Android
Frank HEY - That's the one I've ordered so it looks like I made a good choice JOHN Sent from Samsung Mobile on O2 Get Outlook for Android
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By
JOHN SIDDALL
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#ubitx-help #ubitxv6-help -- tuning aid 2 messages
#ubitx-help
#ubitxv6-help
If using the mic input to do tune-up keying, keep in mind that is is not necessary to go full volume. 20-30% of full volume should be enough to at least give enough RF out to do an initial and probabl
If using the mic input to do tune-up keying, keep in mind that is is not necessary to go full volume. 20-30% of full volume should be enough to at least give enough RF out to do an initial and probabl
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By
Bob Lunsford
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#ubitx-help #ubitxv6-help 4 messages
#ubitx-help
#ubitxv6-help
okayJohn, i had the same problems. Mic wasn't working, and the freq was out totaly wrong. Get many tips from guys who are a lot better with elektronics then me. But, after calibrate serveral times....
okayJohn, i had the same problems. Mic wasn't working, and the freq was out totaly wrong. Get many tips from guys who are a lot better with elektronics then me. But, after calibrate serveral times....
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By
...
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uBitX V6 no transmit power Round 2 27 messages
#ubitx-help
#tx
#ubitxv6
Yes. Could be anywhere in the antenna system with a DC path to the rig.
Yes. Could be anywhere in the antenna system with a DC path to the rig.
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By
Jerry Gaffke
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Ubitx v6 issue: impact damage? 4 messages
#ubitx
#v6
#ubitxv6
#ubitx-help
Thomas, I am not sure that the impact would have translated to the circuit board if it was in the case with the top on. The board is mounted on the bottom of the case. It could have (maybe) caused an
Thomas, I am not sure that the impact would have translated to the circuit board if it was in the case with the top on. The board is mounted on the bottom of the case. It could have (maybe) caused an
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By
Evan Hand
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Noisy RX on ubitx v5 16 messages
#ubitx-help
#v5
#bfo
#filters
#noise
Hi George, I would suggest looking at the S-meter while removing power to the PAM8610 amplifier module. I've also been playing with using a Class D audio amplifier in my V.4 uBitX, but so far I've not
Hi George, I would suggest looking at the S-meter while removing power to the PAM8610 amplifier module. I've also been playing with using a Class D audio amplifier in my V.4 uBitX, but so far I've not
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By
Jonas Sanamon
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#ubitx #ubitx-help Wow! the ubitx.net/ site is amazing! 29 messages
#ubitx
#ubitx-help
Lou It's good to know that it is being used. As I indicated, my main concern is that some areas are not 100% accurate and up-to-date. M
Lou It's good to know that it is being used. As I indicated, my main concern is that some areas are not 100% accurate and up-to-date. M
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By
Mike Woods
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uBitx V6 . 2 board connectors 4 messages
#ubitxv6
#ubitx-help
They are to add another filter optimized for CW. The idea that I have seen was to use another crystal filter with a different frequency and narrow passband. You would then change the BFO to put the si
They are to add another filter optimized for CW. The idea that I have seen was to use another crystal filter with a different frequency and narrow passband. You would then change the BFO to put the si
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By
Evan Hand
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R1.5.1 Manual 5 messages
#ubitxv6
#v6
#ubitx-help
#arduino
#nano
Litle measuring on a selfmade dummyload, 10mtr 18.4 volt, 15 mtr 22.0 volt, 17mtr 23 volt, 20mtr 23 volt, 30mtr 29volt, 40mtr 32volt, 80mtr 32.4 volt..... So is good i think... Regards Rene Netherland
Litle measuring on a selfmade dummyload, 10mtr 18.4 volt, 15 mtr 22.0 volt, 17mtr 23 volt, 20mtr 23 volt, 30mtr 29volt, 40mtr 32volt, 80mtr 32.4 volt..... So is good i think... Regards Rene Netherland
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By
...
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WSPR no TX 4 messages
#ubitx-help
#digital
Thank you Vic! I did not know that was there. I will need to give it a try. 73 Evan AC9TU
Thank you Vic! I did not know that was there. I will need to give it a try. 73 Evan AC9TU
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By
Evan Hand
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Digital mode transmit via CAT but MIC-connector switches to Transmit directly - #cat #digital #v5 #ubitx-help - SOLVED 3 messages
#digital
#v5
#ubitx-help
#cat
I might try to use the existing Keyer plug to see if this would work, but the RigPi is not CAT control setup for uBitX so can't CAT connect naticely to RigPi will try and emulate the Yaesu 817 CAT con
I might try to use the existing Keyer plug to see if this would work, but the RigPi is not CAT control setup for uBitX so can't CAT connect naticely to RigPi will try and emulate the Yaesu 817 CAT con
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By
rpremooak@...
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#ubitx-help 10 messages
#ubitx-help
Most likely ..yes
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MVS Negi
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uBitx V6 GNDREF Connection 6 messages
#v6
#ubitxv6
#ubitx-help
Hi Reed, Thanks for your answer. I will definitely evaluate that. Have a nice day.
Hi Reed, Thanks for your answer. I will definitely evaluate that. Have a nice day.
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By
Bora Gürbüz
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Poor RX sensitivity, no RF out - 36 messages
#v3
#ubitx
#ubitx-help
Unlikely that it was static damage. The is a DC path from Antenna to Ground via L1/2/3/4 and T2. Raj
Unlikely that it was static damage. The is a DC path from Antenna to Ground via L1/2/3/4 and T2. Raj
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By
Raj vu2zap
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