Crystal matching (Question for Ashhar)
Hi Ashhar.
?
Following your post about crystal matching, I assume you use the G3UUR test circuit?shown in Experimental Methods in RF design or something similar.
If so, when calculating the values of Cm and Lm, did you actually measure and include the stray capacitance of the crystal holder and the wiring to the crystal switch circuitry?
Were the results significant?or are they so minimal in effect as to be ignored?
?
Many thanks for your time
?
Slim Haines G4IPZ
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It looks as if the Raduino somehow thinks that the function button is kept pressed all the time, which causes it to restore the 'factory' settings each time at start up, and then jump into the SETTINGS menu.
This could be caused by:
- incorrect wiring
- wrong switch type (type should be normally open, closed when pressed)
- defective switch
- input A3 is 'fried'
Check the voltage on A3 (orange wire) with a DVM. Should be HIGH (+5V) when FB is not pressed, LOW (0V) when FB is pressed).
Disconnect the switch (orange wire is open). Voltage on A3 should be HIGH. If it's LOW all the time then the input A3 may be 'fried'.
73 Allard PE1NWL
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On Fri, Jun 23, 2017 at 08:06 pm, <kivafolks@...> wrote:
For what it's worth, the tuning function seems to work fine, moving up and down the band in 100 Hz steps until either end of the tuning pot is reached then it starts incrementing 10 kHz.
For what it's worth, that is normal! Did you try updating the software? It should not come up in the "Settings" mode. Could also?be that there is a short somewhere between pin A3 (orange wire) and ground making the processor think that you are holding the function button. I'm not sure if it can transmit when?it's in "Settings". Mine is packed up in the car for Field Day, so I can't even try that out for you. ? -- John - WA2FZW
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I'm having multiple problems, starting with alignment. I'm going through the alignment procedure, and setting the PA Bias preset works fine, I have it set at 100 mA. The problem is when I yell into the microphone the current doesn't change a bit no matter where RV136 is set, from end to end. I thought it might possibly be a bad electret microphone element, so I tried grounding pin A1 (8-pin connector P1, brown wire) to simulate a CW key press, but same result. I verified 12 vdc on the PA power connector. So, first issue is not being able to adjust the PA drive current.
Thinking that maybe the raduino settings needed to be adjusted, since after the display goes through it's power-on messages it shows "--- SETTINGS ---", next I wired up a momentary-on Function button between connector P1 orange wire and ground. Pressing this button has no affect. I tried repeated button presses, and long presses over three seconds, nothing. So it powers up in Settings mode, short presses have no affect, and a long press doesn't change to Normal mode. I tried holding down the Function button during power up, but it makes no difference.
For what it's worth, the tuning function seems to work fine, moving up and down the band in 100 Hz steps until either end of the tuning pot is reached then it starts incrementing 10 kHz. Has anybody seen these issues, or know what might cause them? I've been searching the archives, reading threads, but it's like looking for a needle in a field of haystacks... :)
Mark
W4MAP
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Re: Peak output power fluctuate
In sideband your power will fluctuate a lot depending on voice peaks and your power meter. My peak power is similar to yours. In CW your power should be at a steady level 73 Willy
On Fri, Jun 23, 2017 at 9:53 PM, Larry Smith <815cpu@...> wrote: For what is worth, My battery drops down to 11v from 12.5V and my output follows down from 5-7 watts to 3-4 watts. i'm running battery so that maybe a mote point if you are using a power supply.? OR make sure on the heat sink - heat up.? I use an old 12v CPU fan to keep the heat sink cool. ?i also doubled the heat sink size and use heat transfer grease. Hope this provides a clue or helps you out. 73 Larry WA9DOH
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The circuit diagram has not been updated.
Also, those transistors are 2n3904's, not BC849's.
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On Fri, Jun 23, 2017 at 04:51 pm, bryan wrote:
Is there a circuit for the BITX40v3
AS the circuit I have of Bitx40 with DDS ?has the Balanced modulator Pot and diodes still incit
the Bitx40v3 does not have the balance pot or diodes?
Bryan VK7KWB
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Re: Like to test a S-meter and soon an AGC/Tx-monitor for your bitx40?
I think we just hack Allard's code to try smaller Si5351 solutions, or to add other features. ? Perhaps use #ifdef's so it is easy to select various features and libraries as room on the Nano allows. ? If Allard decides what we wind up with is good, he can incorporate it. ?Lots and lots of stuff in the Etherkit library we don't need, could use that flash for other stuff. Line 307 of version 2.0.5 of the Etherkit code has the pll_reset() commented out for output frequencies less than 100 mhz. ?That's probably what was giving us tuning clicks in recent versions. ?CLK[0,1,2] all use PLLA with that VCO frozen to 800mhz, it is only the output divider msynth's that get messed with. ?An exception is made for output frequencies greater than 100mhz, but that does not apply to us. A google search for "si5351 pll reset" suggests that Pavel's code where the VCO ?is changed with each touch of the tuning knob may occasionally need a PLL reset. ?We could reset the PLL's only on major excursions from where last reset, could read the Si5351 lock status and reset only when needed, or follow Etherkit's lead and only mess with the output dividers. ? I doubt the slight added phase noise of non-integer output dividers would ever be much of an issue for the Bix40. One curious thing I see: ?the "c" of (a+b/c) was getting set to 0xFFFFF by the Etherkit code, now it is set to an even million so 0xF4240. ?Pavel's code sets it to 1048574, which is 0xFFFFE. ? ?Why not 0xFFFFF? Here's python code for an algorithm to compute (a+b/c)I haven't seen elsewhere. ? All values are integers, the divides need to handle 64 bits.of dividend. ?Without the final correction to c, I get slightly better accuracy than I do with the downshifting trick of the code previously posted. ?This is about the same algorithm as what's in the Etherkit library. ?With the final correction, it is five times better.
c = 0x100000-1
a = v/x
b = ((v%x)*c)/x
c = b*x/(v%x)
Jerry, KE7ER ?
On Fri, Jun 23, 2017 at 02:59 pm, Pavel Milanes Costa wrote:
That will make the lib bigger than my simple lib, and at the end we will need to change the lib on the raduino code if Allard approve it; then why not just changing the Raduino code?
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Re: Peak output power fluctuate
For what is worth, My battery drops down to 11v from 12.5V and my output follows down from 5-7 watts to 3-4 watts. i'm running battery so that maybe a mote point if you are using a power supply.? OR make sure on the heat sink - heat up.? I use an old 12v CPU fan to keep the heat sink cool. ?i also doubled the heat sink size and use heat transfer grease. Hope this provides a clue or helps you out. 73 Larry WA9DOH
On Fri, Jun 23, 2017 at 7:38 PM, Bill Kittilson <bill@...> wrote: Everything seems to be working but sometimes my peak power around 7 W and then sometimes it's around three watts and then I'll go back up to seven watts doesn't seem to be heat related.?
Any my ideas what to look at?
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Re: Peak output power fluctuate
Is your SWR also fluctuating?
In that case check your antenna and the antenna cables, etc.
73 Allard PE1NWL
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On Sat, June 24, 2017 02:38, Bill Kittilson wrote: Everything seems to be working but sometimes my peak power around 7 W and
then sometimes it's around three watts and then I'll go back up to seven
watts doesn't seem to be heat related.??
Any my ideas what to look at?
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Peak output power fluctuate
Everything seems to be working but sometimes my peak power around 7 W and then sometimes it's around three watts and then I'll go back up to seven watts doesn't seem to be heat related.?
Any my ideas what to look at?
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Is there a circuit for the BITX40v3 AS the circuit I have of Bitx40 with DDS ?has the Balanced modulator Pot and diodes still incit the Bitx40v3 does not have the balance pot or diodes? Bryan VK7KWB
Email sent using Optus Webmail
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Re: Like to test a S-meter and soon an AGC/Tx-monitor for your bitx40?
El 23/06/17 a las 12:16, Pavel Milanes
Costa escribió:
I looked over you
Si5351 library. ?I like that it is kept simple and easy to
understand.
I think it could be a good starting point for a stripped down
library specific to the Bitx40.
I'm working with Allard to make a folk of it with the exact
interface of the mainstream Si5351 that is in use now, to make
them interchangeable by just changing the declaration (include),
not the entire code; that will help the transition a lot.
The main goal is KISS, that's why the name: tuned to MCU size
& needs.
Hi to all.
Passing trough the process of plan and design the compatible library
I found a few issues that spoil the KISS (simple and small)
principle:
- Need to program dummy procedures or procedures with dummy
parameters.
- Program an automatic reset() of the lib to avoid PLL unlook
and click noise
- Include all sort of enums and flag vars.
That will make the lib bigger than my simple lib, and at the end
we will need to change the lib on the raduino code if Allard
approve it; then why not just changing the Raduino code?
So, I officially drop the idea of make a Si5351aarduino compatible
folk/version, from my point of view it's worthless.
73 de CO7WT.
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Re: Like to test a S-meter and soon an AGC/Tx-monitor for your bitx40?
Video of a recording of the bitx40 + Raduino with the Si5351mcu lib
working, video recorded by Alex AC7HU in FL/USA.
Just 10W of output, into a wire doublet for 40m with a homebrew
manual tuner and 9m of homebrew open wire feeder, working good...
73 de CO7WT.
El 22/06/17 a las 13:50, Pavel Milanes
Costa escribió:
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Hi to all.
Since I have now a [borrowed] real bit40v3_smd + raduino I can
test and tune some things...
I have put together a test sketch based on the Allard's code
version 1.15 (1.15 not 1.15.1) that has an S-meter for the RX
part, I'm testing with the TX part [hardware] and playing
[successfully!] with software controlled AGC...
What you get if you dare to test it:
- Full compatibility with Allard's code.
- Smaller code: you need to download the Si5351mcu lib, see
readme and code.
- Smeter on RX, see the simple hardware mod in the
smeter-mod.png file.
- TX power meter, is the same for the Smeter but need a
hardware mod that is on test at the bench.
- Software support for AGC (I'm tunning the hardware/software
parameters, so no schematic for now: soon...)
All this mods can be incorporated on Allard's code once they
are tested and requested.
Do you dare? :
73 de Pavel CO7WT.
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I'm running 2.6 and the only difference is there are now five icons having to do with the object. The second one shows two vases (if that's what those things are), one large and one small. That's the Scale icon. There's no badlock but there is a checkbox for Uniform Scale.
Vince.
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On 06/23/2017 02:37 PM, Doug W wrote: On Fri, Jun 23, 2017 at 11:22 am, bjorn wrote:
Hi Doug,
How did you scale? In Cura? I went through all menues but cannot
find any such opportunity.
I would love to learn how!
Bjorn.
I scaled in Cura. I am using an older version, 14.09 so this may not be
how it works in the newest version. After you drop your object on the
platform, click on it. You should now see three icons on the bottom
left of the platform. The middle one is scale. Click it. In the box
that opens make sure you have uniform scale locked by clicking the
padlock closed. This will apply your changes to X,Y and Z. Now that
your scaling is locked you can enter a multiplier in any of the top
coordinate boxes overwriting 1.0.
--
Michigan VHF Corp.
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Ah, thanks a lot! I never thought of clicking on the object...
On 2017-06-23 20:37, Doug W wrote:
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On Fri, Jun 23, 2017
at 11:22 am, bjorn wrote:
Hi Doug,
How did you scale? In Cura? I went through all menues but
cannot find any such opportunity.
I would love to learn how!
Bjorn.
I scaled in Cura.? I am using an older version, 14.09 so this may
not be how it works in the newest version.? After you drop your
object on the platform, click on it.? You should now see three
icons on the bottom left of the platform.? The middle one is
scale.? Click it.? In the box that opens make sure you have
uniform scale locked by clicking the padlock closed.? This will
apply your changes to X,Y and Z.? Now that your scaling is locked
you can enter a multiplier in any of the top coordinate boxes
overwriting 1.0.
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Good call Jerry - there is a dead short to ground across PWR1 (although not across the PA power connector, which I guess is a small blessing). I can't see any obvious signs of a short anywhere although obviously there is one so I'll keep looking...
Matt 2E1HNK
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Re: TX lockup on LSB PTT after CW mods (was Very high clicks after cw wiring)
On Fri, Jun 23, 2017 at 08:27 am, Michael Babineau wrote:
I just finished the CW mods and I am seeing the same issue that John, WA2FZW had. ?
Michael, Don't know if you saw my last post in the other thread, but I did reconnect the TX-RX line transistor as described in the sketch, and it worked.?When I connected it the first time, I too had the lockup problem (not sure I mentioned that in the other thread) and like you, had to power cycle the rig. I'm pretty sure I probably installed the transistor backwards or maybe I fried it in the process of soldering it in, but I took extra care this time; even breadboarded it?first. Everything works properly now! I'm using a BC546C transistor. ? -- John - WA2FZW
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On Fri, Jun 23, 2017 at 11:22 am, bjorn wrote:
Hi Doug,
How did you scale? In Cura? I went through all menues but cannot find any such opportunity.
I would love to learn how!
Bjorn.
I scaled in Cura.? I am using an older version, 14.09 so this may not be how it works in the newest version.? After you drop your object on the platform, click on it.? You should now see three icons on the bottom left of the platform.? The middle one is scale.? Click it.? In the box that opens make sure you have uniform scale locked by clicking the padlock closed.? This will apply your changes to X,Y and Z.? Now that your scaling is locked you can enter a multiplier in any of the top coordinate boxes overwriting 1.0.
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Did you try OpenSCAD?
I found it very easy to learn.
On 2017-06-23 20:21, Michael Hagen
wrote:
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I wish there was a good drawing program that was reasonable to
learn!
What a learning curve.
I can make the knob shorter (less depth) real easy, let me know
what you want?? It is just changing an Extrude Value.
The ridges around the outside cause me lots of manual editing
because when I copied the pattern, it kept causing extra
segments.
The cad program complained and would not close a sketch.
I will figure it out next go-around.
I am glad someone got some use out of my files!
Mike, WA6ISP
On 6/23/2017 8:33 AM, Doug W wrote:
Mike,
I printed the VFO knob in PLA and it fits great.? Thanks for
drawing it.? I haven't progressed past tinkercad.com for
designing.
Bjorn,
I use Cura too.? I just scaled the object by 25.4 to convert the
dimension and it worked perfectly.
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Yes, I have been using the customizable knob. Downloaded the
OpenSCAD file. Works great.
Thanks
Bjorn
On 2017-06-23 17:50, martin Fraser
wrote:
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here try this?
its easy and works great
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Allard PE1NWL
Willy
Matt Carus