Re: Sideband rejection
Set the BFO to 11.9965 and see if that works.
By
Raj vu2zap
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#61141
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
This is for the bitx 20 it goes to the base of transistor? Q2 and ground. Altering the gain at the 1st IF transistor. Is this the board you are refering to? I am not sure you can use that AGC board
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Mark G?NMY
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#61140
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
This one ( http://1.bp.blogspot.com/-weRlvoq9Xos/U-yEV49cuhI/AAAAAAAABn4/Gsf3hvCpgJQ/s1600/AGC%2Bdetails%2BBW.jpg ) Jim? -- John - N0CTL - Fulltime RV in a 40' motorhome
By
John Scherer
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#61139
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Re: Dummy Load Resistors
Here is a power resistor I used in another dummy load. These could be an alternative if the ones specified for this project are hard to find. https://www.mouser.com/ProductDetail/605-RHXH1Q100R0F4 I
By
Tom, wb6b
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#61137
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Re: Mike element
Did you mean this one? https://www.ebay.com/itm/LM386-Electret-Microphone-Power-Amplifier-Board-Gain-200-Times-DC-3-7V-12V-Pi-LB/153193602065?hash=item23ab0cdc11 wrote:
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Michael Shreeve
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#61136
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Re: SolderSmoke Podcast #207 uBITX 15 Mtrs, 60 mtrs, homebrew, antennas, Cubesats
Raj, what are the spurs like when running finals at higher voltages. 24v has been suggested.
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Michael Shreeve
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#61135
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Re: Sideband rejection
Better yet, repeatedly do both steps until no further adjustment is needed. I have no idea how the two different adjustments might affect each other with the firmware you are using.
By
Jerry Gaffke
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#61134
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Re: Sideband rejection
I don't know what firmware you are using or what instructions you are following. Tuning for zero-beat makes sense to me when calibrating the si5351 reference oscillator so the rig is on the correct
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Jerry Gaffke
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#61133
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Sideband rejection
After relay change my uBitx 4.3 is now capable for legal CW QSOs. So I did the next step and changed L5,L7 and L1 to 680 / 330 nH. The first test on SSB via dummyload and 20db extra attenuation direct
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Matthias Zwoch
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#61132
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
Merci, but no - what I am looking for is NOT in this .rar. Jim
By
Jim Sheldon
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#61131
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Re: uBitX CW Sidetone Volume
All this when TX is off!
By
Marko Pavlicevic <sonymlp@...>
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#61130
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Re: uBitX CW Sidetone Volume
Raj, I will try this. Bill... tried that, but when keying the transmitter, I still hear the bumping of Raduino... even if the CW TONE line is grounded.
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Marko Pavlicevic <sonymlp@...>
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#61129
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
Hello Voici le fichier .rar 73 QRO F1BFU - Fr -- Gilles - F1BFU/FR
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F1BFU - Fr - 79
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#61128
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
Thanks Art, I already have that file and the actual schematic with connections shown is NOT in that .rar.? There was another one that got posted somewhere that actually had the connections for IF-1
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Jim Sheldon
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#61127
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
Jim Agc kit file Art N2AJO Sent: Monday, October 29, 2018 9:00 AM To: [email protected] Subject: Re: [BITX20] Sunil Lakhani's AGC board connections to uBITX #ubitx That's not the AGC board, that's the
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Art N2AJO
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#61126
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
That's not the AGC board, that's the front panel board to one of Sunil's cases.? The AGC board is a separate kit from them. Jim
By
Jim Sheldon
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#61125
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Re: Sunil Lakhani's AGC board connections to uBITX
#ubitx
Jim /g/BITX20/photo/6439/8?p=Name,,,20,1,0,0 Try This Art N2AJO
By
Art Olson
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#61124
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Sunil Lakhani's AGC board connections to uBITX
#ubitx
Anyone have the schematic that shows how to connect Sunil Lakhani's AGC board kit to the uBITX?? I found a diagram that had all the connections once, and like a dummy forgot to print or save it.?
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Jim Sheldon
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#61123
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Re: uBitX CW Sidetone Volume
Hi, I installed a small pot (10k) in series with the line into the audio channel from the Raduino. The trace I broke is on the top of uBitx mother board to the right of the Raduino socket (looking at
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Bill Cromwell
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#61122
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Re: uBitX CW Sidetone Volume
Try a 10K or 1K preset (center and one end) parallel with C252, this should work with 10K but if not try a 1K preset. Raj
By
Raj vu2zap
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#61121
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