Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
? Your example display seams hard to interpret - especially since the frequency per division readout will be wrong. The display of even just four bands simultaneously would be confusing.? The multi-band mode on the SARK-110 works quite well by splitting the screen into four quadrants, each with its own kHz/div.
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On Feb 26, 2023, at 2:47 AM, Erik Kaashoek <erik@...> wrote:
?This is how it will look. <dummyfile.0.part> This will allow the usage of a low RBW to scan the relation between strong signals and very weak signals such as harmonics without having a very long sweep time --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Menu Tree Chart - rotation?
On 25/02/2023 16:36, Isidro Berniol wrote: Hello,
Acrobat is a big and ugly tool.
PdfXchenge? Viewer ist much more easy, aller, faster, and better in any acpect I know.
All the Best,
Isidro Thanks, I will take a look. David -- SatSignal Software - Quality software for you Web: Email: david-taylor@... Twitter: @gm8arv
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Yes. I first tried a transformer and it worked, but not as well as the emitter-follower. ?I wound a 10:1 turns-ratio autotransformer on a rectangular core, one of those with a pair of long cylindrical holes in them. ?The ferrite was #43 mix, 1" x 0.75" x 0.375". ?It worked pretty well from 1 to 3.5 MHz. ?Beyond that range there was either too little iron or too much capacitance. ?
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
I see four options:
- Equal amount of display points for each active band
- Amount of display points relative to band span share versus total band span.
- Amount of display points relative to band span/RBW share versus total band span/RBW, this gives equal information over total span.
- Manual setting of the % of display points per band
I prefer not to implement all options...... 2 and 4 are my favourite as 2 is already implemented and 4 covers any crazy use case people can think of. --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
On Sun, Feb 26, 2023 at 05:08 AM, Erik Kaashoek wrote:
Till now I'v give each band the display points equal to its share of span. When each band has a different RBW (which is possible to implement) the amount of points will have to be split base on span AND RBW to ensure equal information density in each segment/band
Erik, ? Does that mean that if 3 bands are selected then a complete sweep will be performed for each band, but the final composite display will consist of the top 450/3 points for each band? Herb
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
Till now I'v give each band the display points equal to its share of span. When each band has a different RBW (which is possible to implement) the amount of points will have to be split base on span AND RBW to ensure equal information density in each segment/band --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
On Sun, Feb 26, 2023 at 02:47 AM, Erik Kaashoek wrote:
....This will allow the usage of a low RBW to scan the relation between strong signals and very weak signals such as harmonics without having a very long sweep time
? ?The mult-band scanning looks very useful Erik.? I expected it to be under the "FREQUENCY" menu, but the "MEASURE" menu also works.? Any chance in the future of also adding the option of manually specifying the RBW for each band? Some test standards require multiple frequency bands with different RBW's for each band (i.e., 30-200MHz @ 10kHz RBW and 200-1000MHz @ 100kHz). Being able to display the continuous 30 -1000MHz range using multiband scanning at the specified RBW's would be a neat feature. Herb
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
Looks good to me
?
73
Jeff G8HUL
?
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From: [email protected] <[email protected]>
On Behalf Of Erik Kaashoek
Sent: 26 February 2023 10:47
To: [email protected]
Subject: Re: [tinysa] New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
?
This is how it will look.
This will allow the usage of a low RBW to scan the relation between strong signals and very weak signals such as harmonics without having a very long sweep time
--
For more info on the tinySA go to
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
This is how it will look.  This will allow the usage of a low RBW to scan the relation between strong signals and very weak signals such as harmonics without having a very long sweep time --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
All in one sweep is under development
Current mode will disappear? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
I must admit that I was expecting the sub-bands to be displayed all in one sweep, and was slightly confused when it cycled. So perhaps the option of either display mode would be possible?
73
Jeff G8HUL
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Terry Perdue Sent: 26 February 2023 05:04 To: [email protected]Subject: Re: [tinysa] New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height My preference would be to leave as-is, but with a 1 second delay between bands scanned. I think it would be too crowded with 8 segments side-by-side. On Feb 25, 2023, at 11:45 AM, AlexSpb <alextsure@...> wrote: ?Hi Erik, thanks for adding new features! I would suggest to add a new displayed plot variant for the muti-band mode: not to jump the scan from one band to another in a cycle, but rather to plot all selected bands simultaneously during a single scan (common screen). Just add vertical separation lines between the displayed bands. In this display mode we might also add more flexibility in selecting common RBW settings, etc. Thanks for Your work!
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
My preference would be to leave as-is, but with a 1 second delay between bands scanned. I think it would be too crowded with 8 segments side-by-side.
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On Feb 25, 2023, at 11:45 AM, AlexSpb <alextsure@...> wrote:
?Hi Erik, thanks for adding new features!
I would suggest to add a new displayed plot variant for the muti-band mode: not to jump the scan from one band to another in a cycle, but rather to plot all selected bands simultaneously during a single scan (common screen).
Just add vertical separation lines between the displayed bands. In this display mode we might also add more flexibility in selecting common RBW settings, etc.
Thanks for Your work!
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Re: New Ultra FW release: trigger beep, multi band scanning and reduced waterfall height
Hi Erik, thanks for adding new features!
I would suggest to add a new displayed plot variant for the muti-band mode: not to jump the scan from one band to another in a cycle, but rather to plot all selected bands simultaneously during a single scan (common screen).
Just add vertical separation lines between the displayed bands. In this display mode we might also add more flexibility in selecting common RBW settings, etc.
Thanks for Your work!
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On Sat, Feb 25, 2023 at 10:06 AM, Richard Place wrote:
You¡¯re right, the impedance is a lot less than 1M, but enough higher than 50 ohms to make a difference. Further testing showed the collector-base capacitance to be the limiting factor on the input impedance at 3.5 MHz, and that would still be there in a Darlington configuration. I tried using a J310 as a source follower but couldn¡¯t get it to work well using just a 3 volt coming battery to power it.?
?Did you try a? torroidal transformer? That would be my choice since it doesn't introduce more circuit noise and non linearities
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Re: Menu Tree Chart - rotation?
Hello,
Acrobat is a big and ugly tool.
PdfXchenge? Viewer ist much more easy, aller, faster, and better in any acpect I know.
All the Best,
Isidro
herunterladen
Gosh,
I rotated the screen..
Bark less - wag more
On Feb 24, 2023, at 1:58 PM, Geoff Peters - AB6BT <AB6BT@...> wrote:
?Under the View menu there is a rotate selection. I works without charge.
On 2/24/2023 10:30 AM, David J Taylor via wrote:
Looking very good - but any chance of having it as the earlier ones were?
The current one seems to be rotated 90 degrees left on my Acrobat viewer and rotation seems to require registering or payment.....
Thanks,
David
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You¡¯re right, the impedance is a lot less than 1M, but enough higher than 50 ohms to make a difference. Further testing showed the collector-base capacitance to be the limiting factor on the input impedance at 3.5 MHz, and that would still be there in a Darlington configuration. I tried using a J310 as a source follower but couldn¡¯t get it to work well using just a 3 volt coming battery to power it.?
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Re: New Ultra FW release: Repaired big number and dashed trace
@Erik, ? many thanks for all your effort in develope this fantastic device !!! ? ? New Ultra only FW release
Version V1.4064
Changes:
- Big number display repaired
- Dashed trace with small spans in multi band mode repaired
- LEVEL/SCALE can be set down to 0.1 (or 100m)
-- For more info on the tinySA go to
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Re: Menu Tree Chart - rotation?
On 24/02/2023 18:58, Geoff Peters - AB6BT wrote: Under the View menu there is a rotate selection. I works without charge. Thanks, Geoff. Missed that. Dewey, Save As.. after rotate still saves an unchanged version. David -- SatSignal Software - Quality software for you Web: Email: david-taylor@... Twitter: @gm8arv
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New Ultra FW release: Repaired big number and dashed trace
New Ultra only FW release Version V1.4064 Changes: - Big number display repaired - Dashed trace with small spans in multi band mode repaired - LEVEL/SCALE can be set down to 0.1 (or 100m) --
For more info on the tinySA go to https://tinysa.org/wiki/
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I notice your schematic says the input resistance of your "impedance booster" is about 1 Megohm.? That would be true if R4, the 1k emitter resistor, were the only load on the emitter of Q1.? But it's not, of course, it is also driving the 50 ohm input impedance of the spectrum analyzer, and therefore has an input impedance in the range of 22 to 60 kohms (50 ohms times Beta of 450 to 1200).? Still, the current gain of the transistor is a big boost to the weak signals picked up by the telescoping whip antenna.? If you need to present a higher impedance to the whip antenna, try using a Darlington transistor for Q1, or maybe make it a source follower with a JFET or MOSFET.? But for most people, the current gain of the 5089 will make a big difference!? I love emitter followers/source followers (and yes, even vacuum tube cathode followers) - such a simple way to get a big current boost.
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David J Taylor
John Cunliffe W7ZQ
Jim Allyn - N7JA