Re: New Group Specifically for "Homebrew Test Equipment"
I think an si5351 breakout board, a resistor network to combine two channels (some will want all three),
and a Nano with LCD and rotary encoder to program the si5351 with is about all you want.
Could
By
Jerry Gaffke
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#57772
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Re: Need New Raduino Board
I got a replacement Raduino board for? $35 US sent via DHL from HF Signals, which I plan on keeping as a spare.
I managed to replace the Nano on my original Raduino board , not too difficult and
By
Malcolm <ei8fh@...>
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#57771
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Re: New Group Specifically for "Homebrew Test Equipment"
Depends on what you mean by SSB modulation.
Jerry, KE7ER
Hmmm .. Twas just a hair-brained thought .. Two-tone test for sure
ubitx stripped of all rx cruft.. everything past t10 or so on xmit side
By
jim <ab7vf@...>
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#57770
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Re: Odd FT8 transmit behavior
#ubitx-help
You may be hearing a carrier because your receiver is very close to the
ubitx. Mine has a carrier but it is down about 40 db or so from the signal
.
I am thinking I measured about 1 milliwatt of
By
Ralph Mowery
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#57769
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Re: Odd FT8 transmit behavior
#ubitx-help
I have overdriven the power chain by having the slider in wsjt-x up too high, resulting in the need to replace components. That¡¯s why I was asking where the drive level was set to, as well as
By
Sean W7SKD
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#57768
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Re: Odd FT8 transmit behavior
#ubitx-help
I'll check on the wsjt-x slider position tonight (already tried various sound driver slider positions, not the wsjt-x one, however).? We have not fully checked out the radio with SSB voice until
By
Mike KK7ER
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#57767
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Re: Fried irf510s replaced but
Are you sure you have the RF out ground and hot connected properly?
Allison
By
ajparent1/kb1gmx
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#57766
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Re: Q90 fried
Dennis, you are correct.
For many uses the 2n2222/DXT2222 are interchangeable or improved replacement.
Allison
By
ajparent1/kb1gmx
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#57765
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Re: Homebrew from scratch
#ubitx
Peter,
Nice looking build.? I wonder with a different layout if it performs better.
Allison
By
ajparent1/kb1gmx
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#57764
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Re: Thanks for the community and Mr. Bill Cromwell in particular...and check this 20m DX FT8 range
#ubitx-help
#ft8
Very nice. So I manually uploaded my little WSJT-X log to qrz.com.? That worked!? Is there a way to automate the WSJT-X interface to qrz.com? And to complicate, I've installed jtxalert, and it wants
By
Don - KM4UDX
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#57763
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Re: Homebrew from scratch
#ubitx
Would also try to adopt a modular system , but when stacking the modules any adjustable components should then still be accessible from one of the edges of the relevant module board.? Hence a
By
Frank Dinger , EI7KS
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#57762
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Re: New Group Specifically for "Homebrew Test Equipment"
Depends on what you mean by SSB modulation.
If all you want is is the same effect as an SSB transmitter with a 1khz tone into the mike,
most any RF source can do that.? As in any CW transmitter, or
By
Jerry Gaffke
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#57761
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Re: Thanks for the community and Mr. Bill Cromwell in particular...and check this 20m DX FT8 range
#ubitx-help
#ft8
That is a great start with ft8. Here is the qrz log of what I have worked with my ubitx.
By
_Dave_ AD0B
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#57760
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Re: New Group Specifically for "Homebrew Test Equipment"
I would prefer that it remain here to avoid "fragmentation" ...one stop shopping
The software guys seem to be able to ignore most of the hardware discussion ...as I do most of the software and or
By
Jim Tibbits
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#57759
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Re: Q90 fried
-- 2222a Nd 3904 are interchangeable but in my mind, the 2222 is a better grade... not sure I can back that up factually.
72 and God bless
KD4EPG
By
Dennis Yancey
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#57758
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Re: ?B K1 Relay, RF Side
By
jim <ab7vf@...>
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#57757
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Re: ?B K1 Relay, RF Side
I am looking at N5ESE's Classic RF Probe page.
He uses a 0.01 ?F cap and a 1N34A diode.
Are?the cap value and diode type critical?
Thanks!
By
Arvo W0VRA
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#57756
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Re: Fried irf510s replaced but
Progress I think.? Replaced the 1-AM smd with a 2n3904 and have side tone back (thanks Conrad) but the display has gone off showing black boxes across the top and gibberish when I key.? It had been
By
jfein2000@...
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#57755
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Re: Fried irf510s replaced but
When I sow the bottom of the heatsinks were almost touching the board I
removed just a piece 1-2mm of the heatsinks. Just to be sure they could not
touch the board.
By
iz oos
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#57754
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Re: Fried irf510s replaced but
Thank you Marco,? I worked that out by using a USB microscope to see the number stamped on the component and found out it was a version of the 2n3904.? I have some spare 2n3904s and might give it a
By
jfein2000@...
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#57753
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