Re: Another Possible bug in Big Digit Freq FW
The jog wheel can move start, stop, center freq or markers. Look at the small triangle in front of the start/stop/center freq or marker and you know what is selected and can be changed by the jog
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Erik Kaashoek
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#8851
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Re: tinySA branch 'V4.3' renamed to 'main'
Lane, It shall be $ git describe --tags because the v1.4 is only a lightweight tag, which is just a kind of comment, while the v1.2 and also the (fixed) v1.3 were annotated tags. Yes, the difficulties
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Ho-Ro
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#8850
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Re: Another Possible bug in Big Digit Freq FW
I turned off the unit and when I turned it back on everything was working as expected.?? I have no idea why the jog wheel was changing the Start freq. Sorry for the false alarm Rich
By
K3RWN
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#8849
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Re: Observing a low frequency signal using an up converter
Hi John, Can you recommend the "brand" of Up Converter you have and a reliable supplier please. As you say, there are a plethora of clones out there. I would rather get "The Real McCoy". TIA...Bob
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Bob Ecclestone
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#8848
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Another Possible bug in Big Digit Freq FW
Using the new FW when I use the jog wheel to move a marker.?? The jog wheel changes the Start freq by the setting of the Scale/Div.?? In my case 2 mhz.?? Prior to this FW the marker could be
By
K3RWN
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#8847
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Re: tinySA branch 'V4.3' renamed to 'main'
Martin, do we still need to do the "dirty fix" in removed and added a tag for work on V1.4 ? I am seeing this on my newly created main (v1.4??) $ git describe v1.2-666-g504486d I actually slowly
By
Lane Wilson
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#8846
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Re: Which branch to use to compile the same firmware as Erik is releasing?
Martin, to make sure I have this correct, the changes to my previous instructions are: remove the line--> git checkout V4.3 remove the lines below for the temporary fix for wrong version number (do
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Lane Wilson
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#8845
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Re: Observing a low frequency signal using an up converter
Hi Ken, not the double balanced ones. They have mostly transformers on the LO and RF port. And I prefer this mixers because of the higher dynamic. Isidro DB1SBI ?BlueMail for Android herunterladen
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Isidro Berniol
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#8844
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Re: Observing a low frequency signal using an up converter
Isidro, I am using a pre made unit I bought 2018 or 19. It has a SBL-1 mixer terminated with 3db attenuators, a few band pass filters a limiting circuit and a couple of MMICs. It works well enough
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John Cunliffe W7ZQ
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#8843
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Re: It is fun to be stupid!
I would have tried the procedure a 24th time ............... just to be sure.
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Rebel Thompson
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#8842
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Re: Observing a low frequency signal using an up converter
Hello Isidro, What you say about using the normal IF port as input is true for the minicircuits mixers such as the SBL1. But there are many other mixers that can work right down to DC. Especially many
By
Kenneth Greenough
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#8841
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Re: Observing a low frequency signal using an up converter
Hello Larry, It's an unfortunate fact that most times you already need to have accurate test gear to check anything else. 73 Ken g8beq
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Kenneth Greenough
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#8840
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Re: Observing a low frequency signal using an up converter
Hello John, I realise that my description was very basic and could benefit from filters, amplifiers etc. For anyone wanting to just look at audio frequencies the oscillator could be on 10.7 MHz and
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Kenneth Greenough
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#8839
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Re: Observing a low frequency signal using an up converter
To find the perfect LO level for this application use the IF input of the mixer with a signal at the level limit of the mixer. Then apply the LO signal at the nominal level. Now variate the input in
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Isidro Berniol
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#8838
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Re: Observing a low frequency signal using an up converter
Hi, This Description misses some important things. Thie mixer IF port is used as input. If you select the right mixer the input can be DC coupled, allowing measurement down to very low frequencies.
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Isidro Berniol
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#8837
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Re: Observing a low frequency signal using an up converter
Lawrence, No it is the output directly from the box. The amplifier I am using is for the 10Mhz cal out signal from the tinySA that is at about -30dbm and thus to small for the input of the box. The
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John Cunliffe W7ZQ
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#8836
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Re: tinySA branch 'V4.3' renamed to 'main'
Hello tinySA hackers, If you clone directly from Erik's GitHub repository, you're ready to go locally - but to participate in the development process and create PRs, you need to do a bit more. If you
By
Ho-Ro
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#8835
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Re: Noise Sources
We are at the point where colleges and universities could require engineering students enrolled in a related course to purchase a TinySA, just like a textbook. I may be old, but I do remember the days
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Ed Wilson
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#8834
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Re: Noise Sources
Just blows my mind what we can do with just a couple hundred dollars. I'm 75 and remember in college lab manually measuring hundreds of points and plotting on graph paper with equipment you could only
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Roy Appleton
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#8833
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Re: Observing a low frequency signal using an up converter
Thank you for your prompt reply. I understand comparing. ?What I'm wondering about are you using an external amplifier or is there circuitry within the?BG7TBL that assures equivalency. ?I'm about
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Lawrance A. Schneider
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#8832
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