? Try sending a "clearconfig 1234" and cycling power to the TinySA Ultra.? If that doesn't work, then try removing the SanDisk card and cycling power to the TinySA Ultra.? Maybe try removing the SanDisk card and cycling power first so you don't have to re-do your calibration unnecessarily.

Herb

On Sat, Mar 25, 2023 at 07:16 PM, HB wrote:

For 9600 baud I understand the radio connections are different - no demphasis on the received audio etc.

You definitely won't be able to use the mic and speaker connectors for 9600 baud.? Years ago I was on the design team on a radio that besides voice needed frequency response for data beyond that needed for voice and to near DC.? That required a separate modulation path to the VCO for data, and also required modulating the TCXO for low frequency response.? Anything inside the loop bandwidth of the PLL, the loop "corrects" it out if you just modulate the VCO.? I'm not sure what they do on today's software defined radios.? The easy way out is probably to buy radios that have 9600 baud in/out ports on them.? Any radios you already have that you think you might want to use for 9600 baud, spend some time poring over the schematic and the circuit description (if any).? And search the web to see if somebody else has already figured out how to do 9600 on that particular radio.

Ya it would have been great to follow any of the tutorials that just say to click on DFU in the config file.? I was a painless upgrade.
But if yours is like my unit, there is not DFU choice? in the config menu.
And Holding down the joy stick while turning on was not the simple answer.? IT may have turned DFU on but it was not seen in the ST32 app.

So at some point someone will figure out a easy upgrade for those of us who are not CMD literate.
I am a Ham Radio operator - not a computer? wize.
?Tried runningn the TinySA app..... but it did not detect my TinySA Ultra either.

I was using the TinySA Ultra to measure a 3GHz sine wave at about 1 dBm and everything seemed fine. I looked away to do other things for about 5 minutes, then when I looked back the screen was frozen and TinySA Ultra was unresponsive. I’ve tried uninstalling/re-installing the battery and upgrading the firmware to the latest version. However, the screen remains frozen. Any ideas on what the issue may be?

I’ve tried getting TinySA Ultra to do a self-test through serial commands, but the screen remains frozen. Here’s the output after doing the “info” serial command.

?

ch> info

tinySA ULTRA

2019-2022 Copyright @Erik Kaashoek

2016-2020 Copyright @edy555

SW licensed under GPL. See: https://github.com/erikkaashoek/tinySA

Version: tinySA4_v1.4-79-g0db995c

Build Time: Mar 25 2023 - 10:50:27

Kernel: 4.0.0

Compiler: GCC 7.2.1 20170904 (release) [ARM/embedded-7-branch revision 255204]

Architecture: ARMv7E-M Core Variant: Cortex-M4F

Port Info: Advanced kernel mode

Platform: STM32F303xC Analog & DSP

?

Here is a picture of the frozen TinySA Screen

On Sat, Mar 25, 2023 at 03:52 PM, psehorne wrote:

Setting the tone with radio modulated by a 1000Hz will be fine.? Even when you switch the radio to your 2.2KHz tone the deviation should still be 2.4kHz

Well, maybe.? But FM radios use a 6 dB/octave pre-emphasis curve, which increases the deviation at higher audio frequencies relative to lower audio frequencies.? And not all radios follow that curve religiously.? So, just because the deviation is what you want it to be at 1 kHz, that doesn't mean it will be what you want it to be at 2.2 kHz.? It may mean that the 2.2 kHz tone is horribly over deviated and distorted, which for packet data is something you definitely do not want.

The tinySA Ultra has a FM deviation meter function built into it, but after testing it a bit with different tones at different deviation levels, I think I'd be likely to go with comparing to the picture posted by psehorne or other plots of known deviations until another approach is found.? The tinySA Ultra FM deviation function works great for a 1 kHz tone at 3 kHz deviation, for example, but I tried a 2.2 kHz tone at 3 kHz deviation and it seems a bit confused.

For 9600 baud packet you need to bypass the radio's audio circuits and go directly to the transmitter's modulator and receiver's discriminator circuits.? Some radios have ports for this built in.

If the guys are convinced that deviation meter is too old to be repaired, send it to me and I'd be happy to dispose of it properly.? Seriously though, I'd like to have one I rarely ever come across anything that I can't fix.

开云体育

On Sat, Mar 25, 2023 at 06:08 PM, psehorne wrote:

I have just captured a couple of images from the tinySA Ultra display.? How do I get them off of the unit onto my P.C.?

1. Power off the tinySA Ultra and remove the SanDisk card.
2. Insert the SanDisk card into a card reader on the PC.
3. Use File Manager to copy the image files from the SanDisk card to the PC.

Herb

开云体育

In general, the deviation should be set with a steady state tone. But since you are interested in a deviation that is nowhere near the +/- 5kHz deviation limit the baud rate should not cause a problem.? The likely result might be that the measurement might indicate a little lower since the tone will be 'falling' out somewhat.? The pic I sent puts you in about the middle of the deviation range you are seeking; so there is some room for some variation in either direction.

Thanks Paul...

I'm checking a PK-96 connected to a Kenwood TM-V71A that should already be correctly set.? Connected the radio to a dummy load and initiated the PTT and calibration tone and my SA Ultra's display looks almost identical to yours in your last post!? That's a great confirmation for me.

On to the next site tomorrow with an Alinco DR-1200 data radio connected to a PK-232MBX.

Is this the same procedure for 9600 baud packet?? We've kicked around the idea of some 9600 WInlink gateways, but can't the TNC/radio set up properly.

Hank
K4HYJ

For 9600 baud I understand the radio connections are different - no demphasis on the received audio etc.?

Hank
K4HYJ

Thanks Paul...

I'm checking a PK-96 connected to a Kenwood TM-V71A that should already be correctly set.? Connected the radio to a dummy load and initiated the PTT and calibration tone and my SA Ultra's display looks almost identical to yours in your last post!? That's a great confirmation for me.

On to the next site tomorrow with an Alinco DR-1200 data radio connected to a PK-232MBX.

Is this the same procedure for 9600 baud packet?? We've kicked around the idea of some 9600 WInlink gateways, but can't the TNC/radio set up properly.

Hank
K4HYJ

I have just captured a couple of images from the tinySA Ultra display.? How do I get them off of the unit onto my P.C.?

Here is a pic of 2.2 kHz tone at 3kHz deviation.? Noticee the the center peak is at the same level as the peaks at either side.

Paul...
I will give it a shot and report back!

Hank
K4HYJ

开云体育

You should be able to receive the 5 watt signal off the air.? You do not need to connect directly to the tinySA.

Set the tinaySA to the frequency of the radio and the scan very narrow (maybe 30khz).
You will see the transmit signal as a tall peak on the tinySA screen
As you increase the deviation from near zero you will notice the peak of the signal on the tinySA decreasing until it nulls out totally.? At this point your deviation is 2.4 times the audio frequency.?? So if you were to use a 1000Hz tone at the null you would have 2.4 kHz deviation.
Setting the tone with radio modulated by a 1000Hz will be fine.? Even when you switch the radio to your 2.2KHz tone the deviation should still be 2.4kHz

Hey folks...
I have searched the forum here and found one thread on measuring FM deviation and apparently it is way over my head!? I'm a new tinySA Ultra owner.? I bought it for its signal generator range to complete an AM/FM radio kit for an online class.

However, I've been asked to take some packet radio nodes for a local amateur radio club.? Heretofore, they measured transmitter deviation with a Heathkit deviation meter.? That meter no longer works and 2 shops have said it is too old to be repaired :-(

Now that I have the SA Ultra, can I measure and set deviation?? Or more accurately, can someone here teach me how to do it :-)

Here are the parameters: 1200 baud, 145.710MHz FM, deviation with 2.2kHz tone from a TNC into the data port on the data radio should be between 2.5kHz and 3kHz.

With a PC connected to a TNC, I can generate the tone using a command in the TNC along with activating the PTT function in the radio.? 5 watts is the lowest power output of the radio.? I know I need a pad to protect the front end of the SA Ultra or do I use the antenna on the RF port and let the TNC key the transmitter into a nearby dummy load?

Once I'm transmitting, I can adjust the "volume" of the tone coming from the TNC going into the radio with a simple pot.?

Here is what I imagine I could ultimately do: key the radio while injecting the 2.2kHZ tone, read some sort of info on the SA Ultra and adjust the level of the tone on the TNC until the deviation is set correctly between 2.5kHz and 3kHz.

Please put me on the right path!? Sorry for all the noob questions - but I have to learn somehow.

Hank
K4HYJ

开云体育

On Sat, Mar 25, 2023 at 09:47 PM, <vitaliy_kh@...> wrote:

However using a control over Serial Link requires not only a Python script but
some additional SW components:

matplotlib
pillow
pyserial

Well, of course I don't have any of these extra components.
I have no idea where to get them.

Hello Vitaliy,

You just have to type in the Windows Terminal:
$ pip install matplotlib
$ pip install pillow
$ pip install pyserial

I guess, that you have already installed python3.

Rudi DL5FA

Hey folks...
I have searched the forum here and found one thread on measuring FM deviation and apparently it is way over my head!? I'm a new tinySA Ultra owner.? I bought it for its signal generator range to complete an AM/FM radio kit for an online class.

However, I've been asked to take some packet radio nodes for a local amateur radio club.? Heretofore, they measured transmitter deviation with a Heathkit deviation meter.? That meter no longer works and 2 shops have said it is too old to be repaired :-(

Now that I have the SA Ultra, can I measure and set deviation?? Or more accurately, can someone here teach me how to do it :-)

Here are the parameters: 1200 baud, 145.710MHz FM, deviation with 2.2kHz tone from a TNC into the data port on the data radio should be between 2.5kHz and 3kHz.

With a PC connected to a TNC, I can generate the tone using a command in the TNC along with activating the PTT function in the radio.? 5 watts is the lowest power output of the radio.? I know I need a pad to protect the front end of the SA Ultra or do I use the antenna on the RF port and let the TNC key the transmitter into a nearby dummy load?

Once I'm transmitting, I can adjust the "volume" of the tone coming from the TNC going into the radio with a simple pot.?

Here is what I imagine I could ultimately do: key the radio while injecting the 2.2kHZ tone, read some sort of info on the SA Ultra and adjust the level of the tone on the TNC until the deviation is set correctly between 2.5kHz and 3kHz.

Please put me on the right path!? Sorry for all the noob questions - but I have to learn somehow.

Hank
K4HYJ

On Sat, Mar 25, 2023 at 09:47 PM, <vitaliy_kh@...> wrote:

However using a control over Serial Link requires not only a Python script but
some additional SW components:

matplotlib
pillow
pyserial

Well, of course I don't have any of these extra components.
I have no idea where to get them.

Hello Vitaliy,

You just have to type in the Windows Terminal:
$ pip matplotlib
$ pip pillow
$ pip? pyserial

I guess, that you have already installed python3.

Rudi DL5FA