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Component Placement 4 messages
Has anyone used the PCB's designed by Ashhar Fahran and posted on his
website ? I am having some trouble with component placement and
wonder if anyone could supply me with a picture of the completed
Has anyone used the PCB's designed by Ashhar Fahran and posted on his
website ? I am having some trouble with component placement and
wonder if anyone could supply me with a picture of the completed
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By
Colin
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Pictures of my BITX20 3 messages
FYI
Front-panel pictures of my completed BITX20 are shown in
"Photos/K7HKL/...". I finally got it into a box, but the front
panel labels are not yet made and applied.
The front panel items, Left-t
FYI
Front-panel pictures of my completed BITX20 are shown in
"Photos/K7HKL/...". I finally got it into a box, but the front
panel labels are not yet made and applied.
The front panel items, Left-t
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By
Arvid Evans
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BITX-20 with CW 3 messages
Help me, please how is possible to make an modification to operate
the BITX-20 with microphone and CW, a simple modification and to add
one side-tone on circuit.How is possible?
Thank You!
Felipe
Help me, please how is possible to make an modification to operate
the BITX-20 with microphone and CW, a simple modification and to add
one side-tone on circuit.How is possible?
Thank You!
Felipe
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By
felipetanaweb
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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 : /MODIFICATIONS/clear LF.doc
Uploaded by : vdberghak <
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 : /MODIFICATIONS/clear LF.doc
Uploaded by : vdberghak <
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By
BITX20@...
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New file uploaded to BITX20 3 messages
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 : /MODIFICATIONS/BITX20 (K7HKL AF Amp) Version.pdf
Uplo
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 : /MODIFICATIONS/BITX20 (K7HKL AF Amp) Version.pdf
Uplo
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By
BITX20@...
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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 : /K7HKL/L-Meter(Mark-1).pdf
Uploaded by : k7hkl_arv <a
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 : /K7HKL/L-Meter(Mark-1).pdf
Uploaded by : k7hkl_arv <a
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By
BITX20@...
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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 : /MODIFICATIONS/LED Power Indicator.pdf
Uploaded by :
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 : /MODIFICATIONS/LED Power Indicator.pdf
Uploaded by :
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By
BITX20@...
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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 : /BITX 20 V1 /btxv1.pdf
Uploaded by : vu3wjm <vu3wjm@.
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 : /BITX 20 V1 /btxv1.pdf
Uploaded by : vu3wjm <vu3wjm@.
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By
BITX20@...
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New single sided board 3 messages
Do you Yahoo!?
Take Yahoo! Mail with you! Get it on your mobile phone.
Do you Yahoo!?
Take Yahoo! Mail with you! Get it on your mobile phone.
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By Rahul Srivastava
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First real QSO with 150 mW 8 messages
Hi all,
last weekend, I erected a dipole antenne for 18 MHz.
I had finished the BITX17 without the IRF510, the output power of
the used 2N2219 is about 150 mW.
Some tests with PA3CWS (distance about
Hi all,
last weekend, I erected a dipole antenne for 18 MHz.
I had finished the BITX17 without the IRF510, the output power of
the used 2N2219 is about 150 mW.
Some tests with PA3CWS (distance about
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By Chris van den Berg
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CW, T/R pop, modifications 2 messages
Guys,
i was travelling the whole of two weeks. living with a thinkpad and two
changes of cloths give u a lot of perspective on homebrewing.
there are a number of very interesting issues that have b
Guys,
i was travelling the whole of two weeks. living with a thinkpad and two
changes of cloths give u a lot of perspective on homebrewing.
there are a number of very interesting issues that have b
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By
Ashhar Farhan
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your request for help converting the BITX20 SSB transceiver to CW mode operation.
Felipe
Do you now have a working BITX20 operating on SSB mode?
My suggestion is that you complete and test the SSB version of a BITX20 first. Then we will work on what you need to do to add CW
Felipe
Do you now have a working BITX20 operating on SSB mode?
My suggestion is that you complete and test the SSB version of a BITX20 first. Then we will work on what you need to do to add CW
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By
Arv Evans
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New PCB unable to post
Sorry!
Group pages not available here currently. Unable to post the new version of PCB.
Will do so as soon as they become available here.
73
Rahul VU3WJM
Do you Yahoo!?
Win 1 of 4,00
Sorry!
Group pages not available here currently. Unable to post the new version of PCB.
Will do so as soon as they become available here.
73
Rahul VU3WJM
Do you Yahoo!?
Win 1 of 4,00
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By Rahul Srivastava
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CW Key as PTT switch
If you are building a BITX20 with plans for adding CW mode operation,
you might want to consider the following method of obtaining PTT keying:
Since most computer microphones (the internal FET type)
If you are building a BITX20 with plans for adding CW mode operation,
you might want to consider the following method of obtaining PTT keying:
Since most computer microphones (the internal FET type)
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By
Arvid Evans
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Softwre tools for BITX design & testing
On this forum, look in <LINKS/Software Tools> for links to some of the
software tools that I find useful in working with the BITX20 design.
On this forum, look in <LINKS/Software Tools> for links to some of the
software tools that I find useful in working with the BITX20 design.
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By
Arvid Evans
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RF derived CW-mode tone for BITX design? 3 messages
For CW-mode TX tone generation in the BITX20 design, has anyone tried
injecting a 10 MHz signal that is 700 Hz off frequency from the BFO
oscillator? Such a signal would be injected into the BFO bala
For CW-mode TX tone generation in the BITX20 design, has anyone tried
injecting a 10 MHz signal that is 700 Hz off frequency from the BFO
oscillator? Such a signal would be injected into the BFO bala
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By
Arvid Evans
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Current draw of un-modified BITX20?
Is there someone who has built a BITX20 exactly per Farhan's
original design and would be willing to measure the current
draw for Rx and for TX modes?
I am working on a solid-state switch arrangeme
Is there someone who has built a BITX20 exactly per Farhan's
original design and would be willing to measure the current
draw for Rx and for TX modes?
I am working on a solid-state switch arrangeme
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By
Arvid Evans
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New file uploaded to BITX20 3 messages
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 : /BITX 20 V1 /btxv2col.pdf
Uploaded by : vu3wjm <vu3wj
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 : /BITX 20 V1 /btxv2col.pdf
Uploaded by : vu3wjm <vu3wj
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By
BITX20@...
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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 : /MODIFICATIONS/BITX20 CW Tone Osc (ARRL).png
Uploaded
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 : /MODIFICATIONS/BITX20 CW Tone Osc (ARRL).png
Uploaded
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By
BITX20@...
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Error in earlier schematic for BITX20 CW Tone Oscillator
FYI
If you copied my earlier posting of a Twin-T tone oscillator for
BITX20 CW Mode operation, you should know that it was missing the
feedback & bias line between the two transistors. I have remove
FYI
If you copied my earlier posting of a Twin-T tone oscillator for
BITX20 CW Mode operation, you should know that it was missing the
feedback & bias line between the two transistors. I have remove
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By
Arvid Evans
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