Who said it was a trustworthy device? I did not indicate you should
trust it, I indicated it has use as an indicator of possible problems...
You are responding to perhaps someone else?
Here is the quote from my post:
>Here is an interesting video showing both the strengths, and
weaknesses >of the tinySA. A compare of the tinySA to an HP 8921A SA:
>https://www.youtube.com/watch?v=xFtF2AYT0iQ
>
>For the price, and if one is careful, and aware of how to use the
<tinySA, you can gain a lot of knowledge for around 100 bucks.
>
>I am half tempted to buy one, and add a tap to my output coax, add
>power, bring it to a very low input level, and just keep the tinySA on
>all the time I operate, as an alarm that I might have an issue.
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 6/10/21 10:58 AM, Dean L wrote:
After watching the video of the TinySA next to the HP8921, I can't see
how you could EVER trust the results of the toy.
I watched as OM in the video was scratching his head wondering where the
artifacts on the display of the TinySA came from.
Did I watch the wrong video? If I didn't see the image captured by the
HP, I would have comd to different conclusions.
I was not impressed:
Same author different video,
https://youtu.be/uwXUZSdxNq4 <https://youtu.be/uwXUZSdxNq4>
As he changed the amplitude the harmonics generated by the TinySA
changed accordingly making the signal look "dirty"
Great tool if you have a $10k Service monitor sitting right next to it...
I understand it's $100 gizmo, but might confuse an unsuspecting operator.
I would not fault my kilobuck HF rig with this unit
YMMV
73
Dean K2WW
On Thu, Jun 10, 2021, 10:23 Dave <d...@nk7z.net <mailto:d...@nk7z.net>>
wrote:
Interestingly enough I don't see that issue here with my K3, and
tinySA.
I also don't use the built in antenna. I use a tap and attenuator
combination.
I am also using a non clone device, as opposed to a clone device. Some
clones don't have the internal shielding.
Here is a compare to a clone vs a non clone:
https://www.youtube.com/watch?v=I5IzLAGgKg0
<https://www.youtube.com/watch?v=I5IzLAGgKg0>
Here is an interesting video showing both the strengths, and weaknesses
of the tinySA. A compare of the tinySA to an HP 8921A SA:
https://www.youtube.com/watch?v=xFtF2AYT0iQ
<https://www.youtube.com/watch?v=xFtF2AYT0iQ>
For the price, and if one is careful, and aware of how to use the
tinySA, you can gain a lot of knowledge for around 100 bucks.
I am half tempted to buy one, and add a tap to my output coax, add
power, bring it to a very low input level, and just keep the tinySA on
all the time I operate, as an alarm that I might have an issue.
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net <https://www.nk7z.net>
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 6/10/21 6:45 AM, N4ST - Jim wrote:
> FWIW, be careful with your measurement process.
> I got very depressed when I saw that my K3S had harmonics only
20db down on most bands when measured by Tiny SA and its telescoping
antenna.
> It was not being overloaded and in fact I measured similar
results when feeding a dummy load.
> Then I went outside the shack at a distance from the antennas and
found that the harmonics were 40dB down or better.
> Evidently when measuring inside the shack I was getting RF
leakage directly through the front panel of the rig. (?).
>
> _______________
> 73,
> Jim - N4ST
>
> -----Original Message-----
> From: elecraft-boun...@mailman.qth.net
<mailto:elecraft-boun...@mailman.qth.net>
<elecraft-boun...@mailman.qth.net
<mailto:elecraft-boun...@mailman.qth.net>> On Behalf Of Dave
> Sent: Wednesday, June 9, 2021 23:01
> To: elecraft@mailman.qth.net <mailto:elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] Gurus
>
> Actually for this use they are... Someone did a compare of the
tinySA
> to an HP, and it was within a few dB as long as it was
overdriven. We
> are looking for splatter or harmonics, not doing a proof of
performance.
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net <https://www.nk7z.net>
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 6/9/21 7:10 PM, Wes wrote:
>> I'm not sure those toys are up to the task.
>>
>> On 6/9/2021 5:30 PM, Dave wrote:
>>> Buy an attenuator, and a tinySA, or get an SDRPlay, and run the
>>> Spectrum Analyzer software. Take a few SA shots, that will
tell you
>>> if it is him, or you.
>>>
>>> 73, and thanks,
>>> Dave (NK7Z)
>>> https://www.nk7z.net <https://www.nk7z.net>
>>> ARRL Volunteer Examiner
>>> ARRL Technical Specialist, RFI
>>> ARRL Asst. Director, NW Division, Technical Resources
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