Re: low power on some bands
Investigating a bit further by connecting an external power meter between the radio and dummy load.
Power measurements are spot on for 40 am 80m Bands. From 10 Mhz up the measurements reported by the
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OE4DNS, Andi
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#110052
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Re: low power on some bands
Hi Yvon
There are a number of threads about SSB audio issues but you might want to have a look at this one, /g/BITX20/topic/104316077#109674 it covers replacing the electret mic
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Paul <g0kaohx@...>
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#110051
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Re: low power on some bands
Gerry, thank you for chiming in,? I am aware of that. I did make the measurements with a peak power meter, an oscilloscope and also with a generator driving a speaker with a constant 1KHz sine wave
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Yvon AE7YD
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#110050
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Re: low power on some bands
Thank you Evan, that explain what I noticed, not seeing any increase between 7 and 8 on 20m.
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Yvon AE7YD
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#110049
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Re: low power on some bands
Yvon - I think I brought this up previously.? The power output you are seeing for a voice input is the average, which is considerably below peak.? If you have the capability (a decent oscilloscope),
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Gerald Sherman
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#110048
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Re: low power on some bands
Farhan,
I went to 6 then 7 but at 8 or 9 there was no increase of the power anymore. I left it at 7 and that gives me 17w in a 50 ohms dummy load. I can live with that.
I still have the problem that
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Yvon AE7YD
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#110047
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Re: sBitx printed case
Barry,
wish I could say I was surprised that the display channel was not correct. One of the things that 3d printer owners struggle with is dimensional accuracy. ?This is a function of flow rate of
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Mark Hatch
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#110046
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Re: sBitx printed case
Glen,
Please share them on Thingiverse, printable or anywhere else ! That is great work.
let me know when ?and links and I will update my GitHub page and provide pointers. ?I suspect that most
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Mark Hatch
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#110045
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Re: #ft8 #sbitx_v2 #sBITX_v3
#ft8
#sbitx_v2
#sBITX_v3
I am observing an error during build:
sbitx_gtk.c: In function ¡®pre_ft8_check¡¯:
sbitx_gtk.c:4756:1: error: expected declaration or statement at end of input
4756 | }
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Jon / W2JON
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#110044
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Re: low power on some bands
Thank you Farhan, The file is attached.
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Yvon AE7YD
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#110043
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Re: uBITX V6
Many thanks Evan..
________________________________
Sent: 23 March 2024 22:26
To: [email protected] <[email protected]>
Subject: Re: [BITX20] uBITX V6
Hi Art,
They are just wire designators. The other
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art
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#110042
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Re: uBITX V6
Hi Art,
They are just wire designators. The other end is on K3. During transmission, it disconnects the audio preamp from the audio amp.
73
Evan
AC9TU
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Evan Hand
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#110041
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Re: sBITX 64Bit Pi Image Available
#sBitx
I just realized that I sent the wrong link to GT. I apologize - been working extra hours at my job the past couple weeks and it was stressful.
Here is the proper link to GridTracker
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JJ - W9JES
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#110040
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uBITX V6
Hi Evan, could you tell mr what the M1, M2 designators on the v6 schematic are ?? I've been scratching my head trying to decide what they stand for..
Just awaiting some new relays for the
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art
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#110039
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Re: low power on some bands
Hi Andi,
The Scale=value for 20 meters is set for 0.005.? Try increasing it to 0.006 and restarting the sbitx program.? You can edit it with vi or nano.
Each band has its own scale factor.? You
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Evan Hand
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#110038
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Re: low power on some bands
I received my sBitx v3 last week and liking it a lot so far.
I have a related question, so I just add it here
The values in my unit are:
80m: 16W
40m: 24W
30m: 17W
20m: 13W
17m: 19W
15m:
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OE4DNS, Andi
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#110037
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Re: sBITX 64Bit Pi Image Available
#sBitx
Hi Gyula.
All the credit goes to Jerry for this one. I did not get to the point of identifying the issue, however he did and kindly shared it with us.
Now I can focus on other improvements and
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JJ - W9JES
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#110036
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Re: #ft8 #sbitx_v2 #sBITX_v3
#ft8
#sbitx_v2
#sBITX_v3
Great work.??I love the changes.??I will have to look into this further
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Astro-Nights with Mike Christiansen
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#110035
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#ft8 #sbitx_v2 #sBITX_v3
#ft8
#sbitx_v2
#sBITX_v3
sBitx v 3.02 and FT8 mode
I love that the sBitx is a radio where one can tinker with both the hardware and software.
The unix pi app;
The web ui:
Currently I am working on improvements to the FT8
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Lars/OZ7BX
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#110034
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Re: rs232 ptt rts (like /dev/ttyUSB0) interface support
#sBitx
It might be easier to tap into the 12-volt transmit level on Q9.? ?I assume the transistor TR1 can take 12 volts through the 2.2k resistor without issue.
73
Evan
AC9TU
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Evan Hand
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#110033
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