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Date
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
By John Cunliffe W7ZQ · #8836 ·
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 · #8835 ·
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
By Ed Wilson · #8834 ·
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
By Roy Appleton · #8833 ·
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
By Lawrance A. Schneider · #8832 ·
Re: Noise Sources
Attached, please find the response curve for a low pass filter generated by my TinySA Ultra and my new noise source. The curve was generated using TinySA-App. Thanks again to all who helped me
By Ed Wilson · #8831 ·
Re: Observing a low frequency signal using an up converter
Lawrance, Because for the tests I feed it a calibrated level from my calibrated HP signal generator and read the output with the TinySA. If I feed it a -50dbm signal the output equals a -50dbm signal
By John Cunliffe W7ZQ · #8830 ·
Re: Observing a low frequency signal using an up converter
First, thank you both (Kenneth Greenough & John Cunliffe W7ZQ ( /g/tinysa/profile/4088509 ) ). How are you sure the dbm is equivalent to dbm out? larry
By Lawrance A. Schneider · #8829 ·
Re: Observing a low frequency signal using an up converter
Thanks Kenneth, Nice descriptions of the fundamental. This particular up converter uses an external 10Mhz oscillator that ideally should be synchronized to the spectrum analyzer for best accuracy. It
By John Cunliffe W7ZQ · #8828 ·
Re: Measuring 10GHz on the Ultra
Mike, I agree with all of Jim's suggestions and have only one to add of my own: Try googling "MA Gunnplexer" to find more "threads to pull" for info on the subject of devices of this type. I don't
By Mario Vano AE0GL · #8827 ·
Re: Observing a low frequency signal using an up converter
Hello Larry, An up converter is basically a mixer,double balanced being best for the purpose and an oscillator.? For stability the oscillator will likely be a crystal controlled one.? Say the osc'
By Kenneth Greenough · #8826 ·
Re: New ULTRA FW release: Added frequency to BIG number display
This helps. Bug found and will be solved in next release -- For more info on the tinySA go to https://tinysa.org/wiki/
By Erik Kaashoek · #8825 ·
Re: New ULTRA FW release: Added frequency to BIG number display
I have this problem too. Mirek Dne 21.12.2022 v 15:33 Erik Kaashoek napsal(a):
By MirekD · #8824 ·
Re: New ULTRA FW release: Added frequency to BIG number display
Can you post a screen capture or photo? I can't replicate -- For more info on the tinySA go to https://tinysa.org/wiki/
By Erik Kaashoek · #8823 ·
Re: New ULTRA FW release: Added frequency to BIG number display
Thanks for the bug report -- For more info on the tinySA go to https://tinysa.org/wiki/
By Erik Kaashoek · #8822 ·
Re: New ULTRA FW release: Added frequency to BIG number display
Thanks for the update.?? I am only seeing a partial readout of the freq. Example 482.3100 shows 2.310MHZ Is that what I should be expecting to see or should I see the entire freq ie 482.310MHZ Rich
By K3RWN · #8821 ·
Re: Observing a low frequency signal using an up converter
If ignorance were bliss, I'd be in heaven. ?I'm not there yet but I am ignorant. What is an 'up converter'? ?Yes, I understand the words but that does not tell me what it is nor how it works.
By Lawrance A. Schneider · #8820 ·
Re: tinySA branch 'V4.3' renamed to 'main'
Bumped version to v1.4 -- For more info on the tinySA go to https://tinysa.org/wiki/
By Erik Kaashoek · #8819 ·
Re: Noise Sources
Roger, Thanks for the info...seems to be working fine. This is my first experience working with a wideband noise source and I purchased it just for the educational value. -- Ed, K0KC k0kc@...
By Ed Wilson · #8818 ·
Re: New ULTRA FW release: Added frequency to BIG number display
When programming on a Windows computer, I found that the new fw is written correctly if I physically remove the USB cable after programming, not just turn off the OFF switch on the TinySA ULTRA. Mike
By brac321d · #8817 ·