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CW Power level uBITX 6
As Jerry mentioned the unbalancing at the 2nd mixer is a valid option. I have performed his devised modification on both a V3 and a V5 and I get good consistent results and use this feature for reduci
As Jerry mentioned the unbalancing at the 2nd mixer is a valid option. I have performed his devised modification on both a V3 and a V5 and I get good consistent results and use this feature for reduci
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John (vk2eta)
· #84863
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FIRST_IF
Hello Mark, That is because the peak of the filter is in average about 5khz off the theoretical value. For example in one if my uBitx units it was 7Khz off when i measured it. 73, John
Hello Mark, That is because the peak of the filter is in average about 5khz off the theoretical value. For example in one if my uBitx units it was 7Khz off when i measured it. 73, John
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By
John (vk2eta)
· #84189
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AGC by firmware
Further explanations I dug out on ubitx.net: https://ubitx.net/2018/04/01/use-the-45mhz-roofing-filter-for-an-rf-agc/ 73, John
Further explanations I dug out on ubitx.net: https://ubitx.net/2018/04/01/use-the-45mhz-roofing-filter-for-an-rf-agc/ 73, John
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By
John (vk2eta)
· #82608
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AGC by firmware
Hello Ramon, In theory yes. I have implemented in my software an AGC extender as the MAX9814 I use as a receive AGC circuit only had 20dB of dynamic adjustment. The approximate 50dB of additional atte
Hello Ramon, In theory yes. I have implemented in my software an AGC extender as the MAX9814 I use as a receive AGC circuit only had 20dB of dynamic adjustment. The approximate 50dB of additional atte
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By
John (vk2eta)
· #82607
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A way to Check the audio SSB frequency response of your microphone.
Or change all five capacitors C217 to C221 to a higher value to reduce bandwidth or lower value to increase it. I note that these values were changed from 100pF in the V3 version to 68pF in the V5 and
Or change all five capacitors C217 to C221 to a higher value to reduce bandwidth or lower value to increase it. I note that these values were changed from 100pF in the V3 version to 68pF in the V5 and
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John (vk2eta)
· #81912
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uBitX V6 no transmit power
#ubitxv6
#ubitx-help
#tx
Evan, Aaron, Since the unit is described as working and we know that 7.87V on the output of the regulator would mean death to the Raduino it must be the reference point of the measurement. Is it a coi
Evan, Aaron, Since the unit is described as working and we know that 7.87V on the output of the regulator would mean death to the Raduino it must be the reference point of the measurement. Is it a coi
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By
John (vk2eta)
· #80449
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uBitX V6 no transmit power
#ubitxv6
#ubitx-help
#tx
You are right Evan I was thinking V5. Your comments are spot on. Aaron, please disregard and follow Evan questions about the 12v on the finals. 73, John
You are right Evan I was thinking V5. Your comments are spot on. Aaron, please disregard and follow Evan questions about the 12v on the finals. 73, John
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By
John (vk2eta)
· #80425
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uBitX V6 no transmit power
#ubitxv6
#ubitx-help
#tx
Hello Aaron, I would check the following in order: 1. That both the red and brown wires of the power supply connector are connected to the positive of the power supply. To double check i would measure
Hello Aaron, I would check the following in order: 1. That both the red and brown wires of the power supply connector are connected to the positive of the power supply. To double check i would measure
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By
John (vk2eta)
· #80417
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Cw volume
Hello John, There is a separate setting for the CW BFO in the settings. Scroll through the options after getting in setting mode, it is in the CW section if I remember well. I suspect yours is set too
Hello John, There is a separate setting for the CW BFO in the settings. Scroll through the options after getting in setting mode, it is in the CW section if I remember well. I suspect yours is set too
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John (vk2eta)
· #79230
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Ubitx V3 Transmit lock
Hello Terry, Assuming nothing else is connected to that blue wire then there is an issue with the Nano. I also assume no change to the software. Since changing the Nano requires reprogramming the new
Hello Terry, Assuming nothing else is connected to that blue wire then there is an issue with the Nano. I also assume no change to the software. Since changing the Nano requires reprogramming the new
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By
John (vk2eta)
· #77982
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Ubitx V3 Transmit lock
Hello, I would disconnect the keying conditioner first. Maybe one of the FETs is gone or there is a short circuit in the keyer cable/plug. With no key connected you should have very close to +5v on th
Hello, I would disconnect the keying conditioner first. Maybe one of the FETs is gone or there is a short circuit in the keyer cable/plug. With no key connected you should have very close to +5v on th
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By
John (vk2eta)
· #77972
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Circuit for second PTT that will mute Mic but allow line-in...
Hi Rob, I use an electret, a low cost Baofeng style microphone with the capsule replaced by the one supplied with the uBitx kit and larger holes in front of the capsule. I use an SSM2167 speech compre
Hi Rob, I use an electret, a low cost Baofeng style microphone with the capsule replaced by the one supplied with the uBitx kit and larger holes in front of the capsule. I use an SSM2167 speech compre
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John (vk2eta)
· #77961
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Circuit for second PTT that will mute Mic but allow line-in...
Hi Rob, Yes regarding the blend control that was what I had in mind. Regarding feeding 12V to the circuit and connecting the PTT via the diode it should work fine as the Arduino sketches I have seen u
Hi Rob, Yes regarding the blend control that was what I had in mind. Regarding feeding 12V to the circuit and connecting the PTT via the diode it should work fine as the Arduino sketches I have seen u
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John (vk2eta)
· #77947
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Circuit for second PTT that will mute Mic but allow line-in...
Hello Rob, Replying to your first question: a mic output is generally in the 10s of mV. On top of my head I have 50mv as a typical mic input voltage for radios, so 100mv was king of a safe value for a
Hello Rob, Replying to your first question: a mic output is generally in the 10s of mV. On top of my head I have 50mv as a typical mic input voltage for radios, so 100mv was king of a safe value for a
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By
John (vk2eta)
· #77945
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Circuit for second PTT that will mute Mic but allow line-in...
Hello Rob, I have the same situation and was looking at a simple solution too. Here are my thoughts based on your idea. Have a look at this page for examples: http://www.k7tty.com/development/electron
Hello Rob, I have the same situation and was looking at a simple solution too. Here are my thoughts based on your idea. Have a look at this page for examples: http://www.k7tty.com/development/electron
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By
John (vk2eta)
· #77929
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Beware running uBitx with USB connected
Hello Mike, Sorry to hear about your problems with the uBitx. If you are determined to part with it I am interested as I am looking for a case to house a bare V3 set. Email is my callsign at gmail dot
Hello Mike, Sorry to hear about your problems with the uBitx. If you are determined to part with it I am interested as I am looking for a case to house a bare V3 set. Email is my callsign at gmail dot
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By
John (vk2eta)
· #75934
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CW Audio High Pitched and Thin
#cw
Hello Dean, I simply used the settings from the menu on the rig. First enable settings, then return to the menu and extra settings are available like for the ssb bfo adjustment. I set mine so that I c
Hello Dean, I simply used the settings from the menu on the rig. First enable settings, then return to the menu and extra settings are available like for the ssb bfo adjustment. I set mine so that I c
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By
John (vk2eta)
· #74610
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CW Audio High Pitched and Thin
#cw
Hello Dean, I noticed your post remained without replies. In the CEC software there is a separate setting for the VFO in CW mode. Go to settings and select Adjust CW VFO. Hope that helps. 73, John
Hello Dean, I noticed your post remained without replies. In the CEC software there is a separate setting for the VFO in CW mode. Go to settings and select Adjust CW VFO. Hope that helps. 73, John
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By
John (vk2eta)
· #74566
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New adapter kit from TSW
#radiuno
#ubitx
Great idea Jim as the Teensy 4 opens up so much opportunities. A great rejuvenation project for my V3 board, now sitting idle (a V5 board took it's place in the rig). Awaiting your international shipp
Great idea Jim as the Teensy 4 opens up so much opportunities. A great rejuvenation project for my V3 board, now sitting idle (a V5 board took it's place in the rig). Awaiting your international shipp
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By
John (vk2eta)
· #72286
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Swapping Nano's
Hello Martin, Welcome to the world of conditional compile. Here are the lines in the ubitx.h file that you need for the stock standard V5 board (you can copy/paste to replace existing lines 25 to 35 w
Hello Martin, Welcome to the world of conditional compile. Here are the lines in the ubitx.h file that you need for the stock standard V5 board (you can copy/paste to replace existing lines 25 to 35 w
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By
John (vk2eta)
· #72184
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