Re: Release / menu update
On Sun, Oct 22, 2023 at 10:50 PM, Arne Skaanes wrote:
It would be very nice if the release notes and menu pages in the wiki could be updated.
Additional Wiki editors are most welcome ? --
For more info on the tinySA go to
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It would be very nice if the release notes and menu pages in the wiki could be updated.
Seems to me that the wiki is the only, but very good, documentation for this marvelous instrument.
Regards
LB7JI Arne
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Re: Can TinySA Ultra be calibrated using an external 10 MHz signal
Yes, Observe the 100th harmonic at 1GHz and adjust FREQ CORR in EXPERT CONFIG in PPB? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Can TinySA Ultra be calibrated using an external 10 MHz signal
I'm wondering if I can calibrate my TinySA Ultra using an external 10 MHz signal source, such as the GPS based frequency reference devices available on Amazon.
Thank you.
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Re: Attenuator Recommendations
I would like to order a 500w-50db-rf-sampler-tap-attenuator and the RF Power Meter. Does anyone have contact information for Symkrilag? I have questions about the capabilities of the RF Power Meter and shipping choices to the US.
Thanks in advance.
Mike N2MS
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On 10/22/2023 4:13 AM EDT G4HPW via groups.io <j.taylor@...> wrote:
There is of course the possibility of component failure in any resistive tap putting damaging levels into the analyzer. I use this inductive sampler to avoid any such possibility.
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Re: Attenuator Recommendations
There is of course the possibility of component failure in any resistive tap putting damaging levels into the analyzer. I use this inductive sampler to avoid any such possibility.
https://symkrilag.uk/shop/rf-unitsassemblies/500w-50db-rf-sampler-tap-attenuator/
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Re: Attenuator Recommendations
If you can find an Elecraft CP1 and have a dummy load (a Cantenna
or 300W dry load), that will get you down 30 dB up to 250W for the
HF bands.
Doug. K4DDM.
On 10/21/2023 4:50 PM, Jim Campbell
wrote:
40 db resistive taps are not all that expensive and there are
plans on the internet to build your own.
Jim - W4BQP since 1953
On 10/21/2023 4:24 PM, Matthew
Rapaport wrote:
I was going to say if you're going to put out
100 watts that first attenuator on the radio is not going to
be cheap.. probably a variable attenuator of some?sort with a
substantial built-in dummy load... Disapating 100 watts is not
trivial..
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Locked
Re: Windows 11 does not properly load tinySA in DFU mode.
All good. I feel like that's easier than any of the other options in the long run, but I suppose not all are adept at the command line of an operating system. So dfu-util for linux is the best (and only) answer for linux.
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Locked
Re: Windows 11 does not properly load tinySA in DFU mode.
Somehow I missed that. BRB... ?
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Re: Attenuator Recommendations
Also Alan Wolke has a really good video on power taps here:
Sam Reaves
ARS W3OHM
Owner / Moderator of: LeCroy Owners Group on Groups.io
Sencore Owners Group on Groups.io Sprint Layout Group on Groups.io?? Pulsonix EDA Group on Groups.io
LPKF Owners Group on Groups.io
Electronics and Mechanical Hardware Design Engineering Manager
Staff Scientist Andritz Rolls Global Research Center (RETIRED)
Here is a fellow describing the exact design as used in the QEX article. You will want to build the 50dB version. This of course will have to be used in conjunction with a dummy load (up to 100W maximum) suitable for your transmitter.?
In addition to the load you might want to put an additional?10dB attenuator feeding the TinySA Ultra if you will be operating near that 100W load limit. That way you can use the internal attenuator to further attenuate the fundamental?frequency to keep the front end of the TinySA level low to avoid seeing false spurs.
The nice thing about the pickoff is you can easily?customize it to any RF connectors you would like to use, say SO-239's for in and out and a SMA to feed the TinySA.
Good luck!
Sam W3OHM
There is an article that was published in either QST or QEX for a 50dB sampler a while back. I think the author was Bab Larkin. It was a DIY sampler pick off and was part of a power meter project if I recall correctly. I'll look around and see if I can find it.
Sam
Sam Reaves
ARS W3OHM
Owner / Moderator of: LeCroy Owners Group on Groups.io
Sencore Owners Group on Groups.io Sprint Layout Group on Groups.io?? Pulsonix EDA Group on Groups.io
LPKF Owners Group on Groups.io
Electronics and Mechanical Hardware Design Engineering Manager
Staff Scientist Andritz Rolls Global Research Center (RETIRED)
On Sat, Oct 21, 2023 at 6:42?PM Jim Campbell < jecspasc@...> wrote:
The one I have is rated at 100 watts. I got it from M3 Electronix
which has been gone for years. I did find the instructions for the
kit.
Jim - W4BQP since 1953
On 10/21/2023 5:39 PM, Matthew Rapaport
wrote:
That can handle 100 watts??? Don't know about
making your own... The 50db 100 watt pictured at the link is
$1000.00 U.S! The 40db is $900.00! Not cheap!!?
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Re: Tiny SA Ultra Firmware
Very good description, Jim; firmware update works well and smoothly. For updating with a Mac, an excellent suggestion to use "brew" for installing the loader utility program, without any need to manually download and "un-tar" any files, is described here:? /g/tinysa/message/7174
brew install dfu-util
Then as Erik suggests the command
dfu-util -a 0 -s 0x08000000:leave -D tinySA.bin
works well. Of course, first rename the desired tinySA ".bin" file as?tinySA.bin
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Re: Attenuator Recommendations
Here is a fellow describing the exact design as used in the QEX article. You will want to build the 50dB version. This of course will have to be used in conjunction with a dummy load (up to 100W maximum) suitable for your transmitter.?
In addition to the load you might want to put an additional?10dB attenuator feeding the TinySA Ultra if you will be operating near that 100W load limit. That way you can use the internal attenuator to further attenuate the fundamental?frequency to keep the front end of the TinySA level low to avoid seeing false spurs.
The nice thing about the pickoff is you can easily?customize it to any RF connectors you would like to use, say SO-239's for in and out and a SMA to feed the TinySA.
Good luck!
Sam W3OHM
There is an article that was published in either QST or QEX for a 50dB sampler a while back. I think the author was Bab Larkin. It was a DIY sampler pick off and was part of a power meter project if I recall correctly. I'll look around and see if I can find it.
Sam
Sam Reaves
ARS W3OHM
Owner / Moderator of: LeCroy Owners Group on Groups.io
Sencore Owners Group on Groups.io Sprint Layout Group on Groups.io?? Pulsonix EDA Group on Groups.io
LPKF Owners Group on Groups.io
Electronics and Mechanical Hardware Design Engineering Manager
Staff Scientist Andritz Rolls Global Research Center (RETIRED)
On Sat, Oct 21, 2023 at 6:42?PM Jim Campbell < jecspasc@...> wrote:
The one I have is rated at 100 watts. I got it from M3 Electronix
which has been gone for years. I did find the instructions for the
kit.
Jim - W4BQP since 1953
On 10/21/2023 5:39 PM, Matthew Rapaport
wrote:
That can handle 100 watts??? Don't know about
making your own... The 50db 100 watt pictured at the link is
$1000.00 U.S! The 40db is $900.00! Not cheap!!?
|
Re: Attenuator Recommendations
There is an article that was published in either QST or QEX for a 50dB sampler a while back. I think the author was Bab Larkin. It was a DIY sampler pick off and was part of a power meter project if I recall correctly. I'll look around and see if I can find it.
Sam
Sam Reaves
ARS W3OHM
Owner / Moderator of: LeCroy Owners Group on Groups.io
Sencore Owners Group on Groups.io Sprint Layout Group on Groups.io?? Pulsonix EDA Group on Groups.io
LPKF Owners Group on Groups.io
Electronics and Mechanical Hardware Design Engineering Manager
Staff Scientist Andritz Rolls Global Research Center (RETIRED)
On Sat, Oct 21, 2023 at 6:42?PM Jim Campbell < jecspasc@...> wrote:
The one I have is rated at 100 watts. I got it from M3 Electronix
which has been gone for years. I did find the instructions for the
kit.
Jim - W4BQP since 1953
On 10/21/2023 5:39 PM, Matthew Rapaport
wrote:
That can handle 100 watts??? Don't know about
making your own... The 50db 100 watt pictured at the link is
$1000.00 U.S! The 40db is $900.00! Not cheap!!?
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Re: Attenuator Recommendations
Pasternack is not (in my opinion) an
inexpensive distributor.
?
Paul, W8AEF
?
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From: [email protected] [mailto:[email protected]]
On Behalf Of Matthew Rapaport
Sent: Saturday, October 21, 2023
2:39 PM
To: [email protected]
Subject: Re: [tinysa] Attenuator
Recommendations
?
That can handle 100 watts??? Don't know about making your own... The
50db 100 watt pictured at the link is $1000.00 U.S! The 40db is $900.00! Not
cheap!!?
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Re: Attenuator Recommendations
There is a Chinese company that sells on Amazon.
Look for Becen, that is their name.
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Re: Attenuator Recommendations
The one I have is rated at 100 watts. I got it from M3 Electronix
which has been gone for years. I did find the instructions for the
kit.
Jim - W4BQP since 1953
On 10/21/2023 5:39 PM, Matthew Rapaport
wrote:
toggle quoted message
Show quoted text
That can handle 100 watts??? Don't know about
making your own... The 50db 100 watt pictured at the link is
$1000.00 U.S! The 40db is $900.00! Not cheap!!?
|
Re: Attenuator Recommendations
Suggestion for a 100-watt transmitter:
1)? start with a 6 dB attenuator at 100-watts.? You're now down to 25-watts.
2)? follow that with another 6 dB attenuator at 10-watts.? You're now down to 6.25-watts.
3)? follow that with a 10 dB attenuator at 5-watts.? You're now down to 0.625-watts or -2 dBw or +28 dBm.
From there on down, a good switchable 2-watt attenuator to -100 dB attenuation will handle about anything.
In the future, you'll find many, m a n y? uses for your investment.
Dave ?
On Sat, Oct 21, 2023 at 8:50?PM Jim Campbell < jecspasc@...> wrote:
40 db resistive taps are not all that expensive and there are plans
on the internet to build your own.
Jim - W4BQP since 1953
On 10/21/2023 4:24 PM, Matthew Rapaport
wrote:
I was going to say if you're going to put out 100
watts that first attenuator on the radio is not going to be
cheap.. probably a variable attenuator of some?sort with a
substantial built-in dummy load... Disapating 100 watts is not
trivial..
|
Re: Attenuator Recommendations
That can handle 100 watts??? Don't know about making your own... The 50db 100 watt pictured at the link is $1000.00 U.S! The 40db is $900.00! Not cheap!!?
|
Locked
Re: Windows 11 does not properly load tinySA in DFU mode.
I updated the firmware of my TinySA Ultra on Linux/Ubuntu with the 'dfu-util' command, as advised at
(you may have to install dfu-util first)
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Re: Attenuator Recommendations
40 db resistive taps are not all that expensive and there are plans
on the internet to build your own.
Jim - W4BQP since 1953
On 10/21/2023 4:24 PM, Matthew Rapaport
wrote:
toggle quoted message
Show quoted text
I was going to say if you're going to put out 100
watts that first attenuator on the radio is not going to be
cheap.. probably a variable attenuator of some?sort with a
substantial built-in dummy load... Disapating 100 watts is not
trivial..
|
Sam Reaves
Ion Petroianu