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Re: uBITX woes, feeling disheartened.
#ubitx
Now the readings looks normal!
Now the readings looks normal!
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By
Raj vu2zap
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#41695
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Re: Blown by nearby transceiver
#bitx40help
Jerry,
Looks the L and C formed a series resonant circuit at the transmitted frequency.
Raj
Jerry,
Looks the L and C formed a series resonant circuit at the transmitted frequency.
Raj
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By
Raj vu2zap
·
#41696
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Re: uBITX woes, feeling disheartened.
#ubitx
Thats not OK.. your rx will not work!
Switch off power and check the contact continuity as per table I sent you!
Thats not OK.. your rx will not work!
Switch off power and check the contact continuity as per table I sent you!
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By
Raj vu2zap
·
#41697
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|
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Re: Blown by nearby transceiver
#bitx40help
Possible.
Do we know what the transmitted frequency was? Was it 40m?
I figure the series loop of L3,C6,C7,C5 to be resonant at 7.45mhz,
C-total-in-pf = 1/(1/1000 + 1/470 + 1/100) = 76pf
Possible.
Do we know what the transmitted frequency was? Was it 40m?
I figure the series loop of L3,C6,C7,C5 to be resonant at 7.45mhz,
C-total-in-pf = 1/(1/1000 + 1/470 + 1/100) = 76pf
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By
Jerry Gaffke
·
#41698
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Re: wrong frequency after software change.
#ubitx
Thanks Jack. I missed that one.
It still doesn't show me the exact location of my project.
The problem is only I open more than one project at a
time for comparison.
From now on when I download a
Thanks Jack. I missed that one.
It still doesn't show me the exact location of my project.
The problem is only I open more than one project at a
time for comparison.
From now on when I download a
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By
at91r40008
·
#41699
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Re: wrong frequency after software change.
#ubitx
Thanks Ron.
Never too old to learn something new. And be embarrassed that it was in my face.
--
73, Yvon NU6I
Thanks Ron.
Never too old to learn something new. And be embarrassed that it was in my face.
--
73, Yvon NU6I
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By
at91r40008
·
#41700
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Re: Bitx40 - receiver works great, but do not transmit
#bitx40help
Thank you for answers. I have a lot of good germanium detector diodes D9B (full analogue of 1N34A). At evening i try to built a RF probe and measure output power.
Also i try to check toroid trifillar
Thank you for answers. I have a lot of good germanium detector diodes D9B (full analogue of 1N34A). At evening i try to built a RF probe and measure output power.
Also i try to check toroid trifillar
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By
Ivan Ilyichev
·
#41701
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Re: Lost audio from receiver
Or use a socket for the LM386
Or get a cheap AF amplifier from bangood
Or use a socket for the LM386
Or get a cheap AF amplifier from bangood
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By
Lawrence Galea
·
#41702
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#bitx40help Probably need new Raduino
#bitx40help
Yep I think I did it. I applied reverse polarity to my BITX40 from HFSignals. The power to the board was connected but no power to the PA. (The connector I used had the positive connected to the
Yep I think I did it. I applied reverse polarity to my BITX40 from HFSignals. The power to the board was connected but no power to the PA. (The connector I used had the positive connected to the
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By
Kevin Luxford
·
#41703
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Re: #bitx40help Probably need new Raduino
#bitx40help
Amici curiae will tell you that probably nothing happened.
You would have had a smoking gun: D7 - in B40 that part dies first, so please check if it has fried and then the rest..
What was the power
Amici curiae will tell you that probably nothing happened.
You would have had a smoking gun: D7 - in B40 that part dies first, so please check if it has fried and then the rest..
What was the power
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By
Raj vu2zap
·
#41704
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Re: BITx 40 Frequency lock during transmit
I agree on changing to Allard's code. It is a wonderful improvement to all aspects of the BitX40 and works even without any hardware mods. Loading a new sketch is easy. I had no experience with
I agree on changing to Allard's code. It is a wonderful improvement to all aspects of the BitX40 and works even without any hardware mods. Loading a new sketch is easy. I had no experience with
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By
Vic WA4THR
·
#41705
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Re: BITx 40 Frequency lock during transmit
Thank all of you for the information.
73
--
Dave Robertson KD1NA
Thank all of you for the information.
73
--
Dave Robertson KD1NA
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By
David Robertson <kd1na363@...>
·
#41706
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RadI2Cino - I2C replacement for the uBITX Raduino
#ubitx
Announding the RadI2Cino (prounounced "Rad ee too CEE no", an almost "Drop In" replacement for the original uBITX Raduino card.
The attached PDF file contains the complete information on it but here
Announding the RadI2Cino (prounounced "Rad ee too CEE no", an almost "Drop In" replacement for the original uBITX Raduino card.
The attached PDF file contains the complete information on it but here
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By
Jim Sheldon
·
#41707
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Re: Raduino seperate
I HAVE always wondered why, guys that do pcb layouts the dont add slightly longer pads with thru holes to dually accomodate smd 0805 OR 1/8 was resistors and 5 mm caps.
dave N4LKN.
I HAVE always wondered why, guys that do pcb layouts the dont add slightly longer pads with thru holes to dually accomodate smd 0805 OR 1/8 was resistors and 5 mm caps.
dave N4LKN.
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By
LKNDAVE
·
#41708
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Aluminum enclosure
I ordered one of these: https://www.hammfg.com/part/1402D
I'm hoping I can work with the height of the Raduino OK.
John
KC9OJV
I ordered one of these: https://www.hammfg.com/part/1402D
I'm hoping I can work with the height of the Raduino OK.
John
KC9OJV
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By
John KC9OJV
·
#41709
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Re: Aluminum enclosure
For the uBitx
By
John KC9OJV
·
#41710
·
|
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Si5351mcu library update
Hi OM.
I have re-worked on my lib for the Si5351, I have a few new features in there, if you like to peek you can check the code in github
https://github.com/pavelmc/Si5351mcu
Hi OM.
I have re-worked on my lib for the Si5351, I have a few new features in there, if you like to peek you can check the code in github
https://github.com/pavelmc/Si5351mcu
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By
Pavel Milanes Costa <pavelmc@...>
·
#41711
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Re: Aluminum enclosure
6" x 6" is what it needs (for a very very tight fit). At least 2-1/2" inches if you are on standoffs. The stand-offs are 1/2 inch, the display is another 1-3/4 inch above the PCB.
6" x 6" is what it needs (for a very very tight fit). At least 2-1/2" inches if you are on standoffs. The stand-offs are 1/2 inch, the display is another 1-3/4 inch above the PCB.
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By
Randy
·
#41712
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Re: uBITX woes, feeling disheartened.
#ubitx
Ran : does rx mean receive, if it does? The radio has been reviveing the last four weeks very good hearing stations all over the world. 73’s de AC8XZ
Ran : does rx mean receive, if it does? The radio has been reviveing the last four weeks very good hearing stations all over the world. 73’s de AC8XZ
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By
rlawson695@...
·
#41713
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Re: Second batch of uBITX shipping?
#ubitx
Art,
Just got off the phone with a DHL rep who said DHL will deliver here, not USPS. Your mileage may vary. The package is on the move again this morning! :-)
73,
Steve
Art,
Just got off the phone with a DHL rep who said DHL will deliver here, not USPS. Your mileage may vary. The package is on the move again this morning! :-)
73,
Steve
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By
S. Porter <srporter@...>
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#41714
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