Re: Level calibration question
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why not? for ultro it is applicable, only you need to take into account cal= -36dBm 30mhz and perform calibration according to this example, or as I previously dropped using rtl-sdr comparison method.
On Tue, Sep 10, 2024 at 02:58 PM, Julio VE3FH wrote:
does the procedure in the link below apply to both versions??
No
The Ultra uses a different calibration level,?
Thanks for notifying me to update this page
--
Designer of the tinySA
For more info go to
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Re: Level calibration question
why not? for ultro it is applicable, only you need to take into account cal= -36dBm 30mhz and perform calibration according to this example, or as I previously dropped using rtl-sdr comparison method.
On Tue, Sep 10, 2024 at 02:58 PM, Julio VE3FH wrote:
does the procedure in the link below apply to both versions??
No
The Ultra uses a different calibration level,?
Thanks for notifying me to update this page
--
Designer of the tinySA
For more info go to
|
Re: Level calibration question
On Tue, Sep 10, 2024 at 02:58 PM, Julio VE3FH wrote:
does the procedure in the link below apply to both versions??
No
The Ultra uses a different calibration level,?
Thanks for notifying me to update this page
--
Designer of the tinySA
For more info go to
|
Re: Level calibration question
Oops! good point Dave I should've included that. It was at 14.200000MHz and -23.0dBm. My scope is a Siglent SDS 1202X-E about three years old btw.
73, Julio VE3FH
On Tuesday, September 10, 2024 at 06:04:18 p.m. EDT, W0LEV <davearea51a@...> wrote:
At what frequency is it off by -8.1 dBm?? I'm sure Eric would prefer to know that to respond.
Dave - W?LEV
Hello group,
For the signal generator functionality, does the procedure in the link below apply to both versions??
I tried it in my ULTRA and appears to be off by -8.1dBm, is this somehow within the expected range before calibration??
Thanks, Julio VE3FH
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Re: Level calibration question
At what frequency is it off by -8.1 dBm?? I'm sure Eric would prefer to know that to respond.
Dave - W?LEV
Hello group,
For the signal generator functionality, does the procedure in the link below apply to both versions??
I tried it in my ULTRA and appears to be off by -8.1dBm, is this somehow within the expected range before calibration??
Thanks, Julio VE3FH
|
Level calibration question
Hello group,
For the signal generator functionality, does the procedure in the link below apply to both versions??
I tried it in my ULTRA and appears to be off by -8.1dBm, is this somehow within the expected range before calibration??
Thanks, Julio VE3FH
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Re: Improving waterfall !
Hi Erik,
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It is as you describe.
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As there is no control link between the receiver and the TinySA, the waterfall cannot track the change in frequency, so the waterfalls does not seem continuous, but becomes "fractured" at the point the frequency change occurs.
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The TinySA was not designed to be used in this way, so whatever results you get are a bonus. If you want a receiver with a waterfall that behaves as you wish, then you will have to use some other method, such as controlling the radio with software, that can link and track a spectrum display with the tuned frequency, or buy a radio that already has a panadaptor built in.
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Regards,
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Martin
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On Tue, Sep 10, 2024 at 03:08 PM, Erik Kaashoek wrote:
I'm not sure I understand what you mean with fractured
The tinySA, when used as a panadapter and connected to, for instance, the IF output, does not change frequency when you tune your receiver.
This makes it impossible to do something smart with the waterfall like shifting it with the shift in tuning.
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Re: Improving waterfall !
I'm not sure I understand what you mean with fractured
The tinySA, when used as a panadapter and connected to, for instance, the IF output, does not change frequency when you tune your receiver.
This makes it impossible to do something smart with the waterfall like shifting it with the shift in tuning.
--
Designer of the tinySA
For more info go to
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Hello.
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Currently, waterfall of TinySA Ultra is "fractured" when moving from frequency to other, like when I rotate dealer of my ICOM7100. This is very anoying with SSB weak signals .....
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I attached a video record to explain what I mean by "fractured". This video is for AM & I selected AM signal to show what I mean by fracture because signal of broadcast stations much more powerful than a HAM station signal. This just to make what I mean by "fractured" clear to you. However, in fact the current "fracturing" of waterfall on AM broadcast signals is somewhat can be tolerated, but the negative effect of this "fracturing" will be more sever with SSB HAM signals making waterfall less useful in using it to follow location of SSB stations signals.
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On many SDR devices, such "fracturing" not existing & waterfall will just move AS IT from side to side when rotating dealer .....
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I'm not sure if it is possible to make waterfall of TinySA Ultra behave like SDR waterfall that not fractured ..... But, if it is possible, then it will be a huge improvement for TinySA Ultra ....
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Note: SDR receiver are not available easily in all parts of globe, & they are even not legally allowed in certain areas, & TinySA Ultra is very useful alternative to SDR as a pana-dopter spectroscope (not ideal, but accepted to medium) that could be imported without any problem .....
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YI1YJK
73
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Re: Need to test a helium rak miner loRa antenna. Not sure what settings i need to set the SA to?
That would be a good approach
--
Designer of the tinySA
For more info go to
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Re: Software for the TinySA Ultra signal generator
Some time ago, I started making one for the tinySA, perhaps I shall bring it back to life? I will have a look and if I get it working with the Ultra, if not too much work and and other projects popping up, it might be possible...
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73's de Karl?
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Re: Need to test a helium rak miner loRa antenna. Not sure what settings i need to set the SA to?
I can send a test beacon from the miner, just trying to see if one of these devices can pick up the signal?
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Re: Need to test a helium rak miner loRa antenna. Not sure what settings i need to set the SA to?
This stuff is too high level for me best I need to test the Lora to see if it will send a beacon.?
it hasn’t beaconed in two months. I can definitely look into a vna though.?
Beacon: A beacon is a single transmission witnessed by any Hotspot. After a Transmitter receives the challenge, it will beacon the challenge packet.
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Re: Need to test a helium rak miner loRa antenna. Not sure what settings i need to set the SA to?
The RAK Hotspot is capable of an output level of +27 dBm, which is a half watt.? This will definitely destroy the tinySA if it is hooked directly to it.? The tinySA is rated for a maximum input level of +6 dBm, but for best performance it is often best to keep signals more in the range of -20 dBm or lower.
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What exactly is it you want to test the LoRA antenna for?? SWR/return loss?? Gain?? Bandwidth?? It may be that what you want is not a spectrum analyzer but a Vector Network Analyzer, such as the LiteVNA.
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You can already drag a marker to any point using the QT program. Having some fine resolution of marker positioning using the mouse scroll wheel would be ideal.? Then, one could get an audio to USB or audio to bluetooth device and tune in and listen to any signal one wants to identify by listening.? I guess a bluetooth transmitter RF would get picked up by the SA so that isn't the best, USB could route back to my desktop PC and play in my audio.
But scanning would naturally be stopped in listen mode.
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On 9/9/24 6:32 AM, pauldnorth via groups.io wrote: Here's another little request. I'm not sure if there's a solution already, so here goes.
Lets say we leave the device and we have waterfall mode set. We notice that there's an intermittent signal on the waterfall but its not transmitting currently. I want to position the marker at the precise frequency so I can hear the transmission when it arrives. If I've got a broad frequency range, it's difficult to know if I'm at the correct frequency highlighted on the waterfall. It would be nice to have some kind of line or marker on the waterfall so we know we're at the correct frequency.
The attached image isn't a good example as its a narrow frequency range, but you get the idea.
Thanks
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I agree. This will be useful. And it will be better if make the new suggested option in the form of a vertical line pass through marker vertically across screen like the pointer in SDR.
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Hello.
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I'm using TinySA Ultra as panadopter (spectroscope) for my ICOM7100 STN after adding to it IF output port ....
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What is currently happening is that: suppose that I'm on 14200 KHz within 20mb. If I like to ascend to 14300 KHz, I have to rotate dealer of radio clockwise (rotate it to my right side). And if I like to descend to be at 14074 KHz, I should rotate dealer anti-clockwise (rotate it to my left side). There is no any problem in this at all, because it is correct design of station. But, the confusing current case is that on TinySA Ultra, the signals within upper part of band (ex: 14300 KHz) appearing on LEFT sector of screen of analyzer (to LEFT from central marker) while signals within lower part of band (ex: 14074 KHz) located on RIGHT sector of screen of analyzer (to RIGHT from central marker).
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It will be very useful to add "Flip Screen" option, so that user can make in such case, the upper frequencies on right side of screen & lower frequencies on left side of screen.
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Kindly, see the attached video.
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Re: Need to test a helium rak miner loRa antenna. Not sure what settings i need to set the SA to?
As the lora module will only react to correctly formatted input you better use the SA mode (input mode) to see if the module is broadcasting. These could be very short pulses so best set to zero span mode with wide RBW to catch the short transmission
--
Designer of the tinySA
For more info go to
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Here's another little request. I'm not sure if there's a solution already, so here goes.?
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Lets say we leave the device and we have waterfall mode set. We notice that there's an intermittent signal on the waterfall but its not transmitting currently. I want to position the marker at the precise frequency so I can hear the transmission when it arrives. If I've got a broad frequency range, it's difficult to know if I'm at the correct frequency highlighted on the waterfall. It would be nice to have some kind of line or marker on the waterfall so we know we're at the correct frequency.??
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The attached image isn't a good example as its a narrow frequency range, but you get the idea.
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Thanks
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Ah what a shame. The device is amazing all the same. Thanks for the prompt reply.
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Julio VE3FH
Jim Allyn - N7JA
