Re: Damage to SMT version bitx40 from nearby transmitter
You would have landed up with thyristors!!
By
Raj vu2zap
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#19508
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Re: DDS VFO AD9850 + Arduino
Bfo/vco needs to be 12mhz-lsb offset 1500hz or what you think is best.
Sent from my iPhone
By
ron van doremalen (PA3FAT)
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#19507
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Re: Tracking shipment
Hi, I too have heard nothing after placing my order for the new Bitx40 ($59), I have checked with paypal and it has gone to the correct account and shows up on my account but no notification or
By
Ray Koster
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#19506
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Re: DDS VFO AD9850 + Arduino
Hi Max,
I made successfull QSO with dds vfo.
I add a 9850 based vfo plus a 2 x 2n2222 buffer amplifier to increase dds output signal.
I connect the vfo to external input pin of bitx 40, before I
By
Giuseppe Callipo
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#19505
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Re: DDS VFO AD9850 + Arduino
I had to use a capacitor coupler to use my AD9850 DDS. I found different results with the different AD9850 outputs as well (one if filtered, one is not).
I think you can also remove C91 from the
By
Darryl Harvey
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#19504
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DDS VFO AD9850 + Arduino
Hi all,
I have received the Bit X 40 for Christmas. What a wonderful TRX. Worked
first up with great results. VFO is very unstable so I built another DDS
VFO using an AD9850 and Arduino. I have built
By
Max Morris <vk2xam@...>
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#19503
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Re: Tracking shipment
I ordered two new BITX40's via PayPal. No confirmation yet.
Jack, W8TEE
To: BITX20@...
Sent: Thursday, December 29, 2016 12:01 AM
Subject: RE: [BITX20] Re: Tracking shipment
? I
By
Jack Purdum <econjack@...>
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#19502
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Re: Tracking shipment
I ordered mine on 12/23. The money was sent from my Paypal account. But no confirmation yet. The reply I got to my initial inquiry was to sent eh money and it would be shipped in a few days. I only
By
Mark W <k3mrk1@...>
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#19501
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Re: Si5351 calibration
you can do it on air. with the bitx40 sketch running on the raduino,
1. tune in a station, ask for her exact frequency.
2. move the dial until it reads the correct frequency, by now the signal
would
By
Ashhar Farhan
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#19500
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Re: Si5351 calibration
In the Si5351 library, there should be a calibration sketch (look in the examples folder of arduino app)
Try this method; http://ak2b.blogspot.com.au/2015/02/stuff-i-learned.html
By
Darryl Harvey
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#19499
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Re: Si5351 calibration
Ken
Just printed it. Will test tomorrow
Thanks
73
Art
Sent from my iPhone
By
Art Olson
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#19498
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Re: Si5351 calibration
The PDF should instruct on how to use the sketch.
73 ken
BITX20@...> wrote:
By
Ken
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#19497
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Re: Si5351 calibration
Ken
Thanks. That's the one I have.
Art
Sent from my iPhone
By
Art Olson
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#19496
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Re: Si5351 calibration
BTW, the sketch is for the Adafruit SI5351 and nano.
73 Ken
BITX20@...> wrote:
By
Ken
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#19495
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Re: Si5351 calibration
I have uploaded a sketch and PDF to VA3ABN folder in files section. Read
the PDF on how to use it. I haven't used it in a while so I don't remember
the steps. I think it asks to enter a frequency to
By
Ken
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#19494
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New file uploaded to BITX20
Hello,
This email message is a notification to let you know that
a file has been uploaded to the Files area of the BITX20
group.
File : /VA3ABN/Si5351 Calibration Routine.pdf
Uploaded
By
BITX20@...
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#19493
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Re: Si5351 calibration
Ken
Appreciate the help. I will check it out. The sketch I have is from the etherkit, examples. I think I don't fully what to do after compiling, uploading via ide, open the monitor and at that point
By
Art Olson
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#19492
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New file uploaded to BITX20
Hello,
This email message is a notification to let you know that
a file has been uploaded to the Files area of the BITX20
group.
File : /VA3ABN/SI5351_Calibration.ino
Uploaded by :
By
BITX20@...
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#19491
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Re: Si5351 calibration
I do have a calibration sketch and instructions. I can upload to the Bitx
files section. I haven't used it in a long time.
73
Ken VA3ABN
BITX20@...> wrote:
By
Ken
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#19490
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Si5351 calibration
Looking for a way to calibrate the si5361. I don't have a signal generator. Do have a freq counter. Read the discussion for calibrating as well as compiled the calibration sketch for the si5351 but am
By
Art Olson
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#19489
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