开云体育

On Thu, May 14, 2020 at 03:46 PM, Gus Osborne wrote:

Hello all,

Think this is my first OP here - have a couple questions/thoughts I’d like
to run by the group.

I’ve ordered a couple of the SUP2400 satellite upconverters, with the
intention of modifying one to act as a 2.4Ghz down converter, like here:


I know this should work for my RX only SDR purposes (possibly even TX with
BladeRF) - but was also wondering about the feasibility of connecting one of
these modified “downconverters” to CH1 on the S-A-A-2 (using an external
antenna and possibly some preamplification) in order to reach the 5.8Ghz band
for a “poor mans” spectrum analysis tool. The primary use would be for
conducting quick and dirty site surveys.

My other thought, possibly even stranger - was using one in its default
configuration on CH0 to upconvert the tracking gen signal by 2.4Ghz (through a
DUT/bridge), then using the modified downconverter to receive output on CH1
for typical analysis. I’m sure all bets would be off when it comes to phase
and possibly impedance.

Does anyone see an obvious reason this shouldn’t work for simple purposes? I
understand it won’t work nearly as well as a purpose built device; but will
it work? I’m hoping the SAA2’s usable 3.5Ghz + a 2.4Ghz conversion will
put me right were I need to be, for (somewhat crude) 5.2-5.8Ghz analysis.
Thoughts..?

On Fri, May 15, 2020 at 12:39 AM W2DWL <w2dwl@...> wrote:

I got mine from R&L Electronics, and had it in 4 days.Sent via the Samsung
Galaxy S10, an AT&T 5G Evolution capable smartphone
-------- Original message --------From: Robert Cloutier <
rob_cloutier@...> Date: 5/14/20 23:44 (GMT-05:00) To:
[email protected] Subject: Re: [nanovna-users] Are any of the
NanoVNA sold on Amazon any better or worse than any others? Is there a
better U.S. site to order from? How much did you pay for
it?WO4ROB________________________________From: [email protected] <
[email protected]> on behalf of Clif Holland <clif@...>Sent:
Thursday, May 14, 2020 12:24:29 PMTo: [email protected] <
[email protected]>Subject: Re: [nanovna-users] Are any of the
NanoVNA sold on Amazon any better or worse than any others? Is there a
better U.S. site to order from?I bought a NanaVNA-H4 from outstandingdeal
on Ebay. Genuine article in Gold lettered box. Received it in 4 days. No
problems what-so-ever.

-------- Original message --------From: Robert Cloutier <rob_cloutier@...> Date: 5/14/20 23:44 (GMT-05:00) To: [email protected] Subject: Re: [nanovna-users] Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from? How much did you pay for it?WO4ROB________________________________From: [email protected] <[email protected]> on behalf of Clif Holland <clif@...>Sent: Thursday, May 14, 2020 12:24:29 PMTo: [email protected] <[email protected]>Subject: Re: [nanovna-users] Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?I bought a NanaVNA-H4 from outstandingdeal on Ebay. Genuine article in Gold lettered box. Received it in 4 days. No problems what-so-ever.

On Thu, May 14, 2020 at 12:07 PM DougVL <K8RFTradio@...> wrote:

Great thread!
I have an MFJ-207, an MFJ-259(no letter), a Mini60 bluetooth, and an early
NanoVNA (received in October, 2019).
The NanoVNA is great indoors, especially used with a PC or android. But
it's nearly impossible for me to see and read it outdoors, at my antenna
location. I hope very much to get the NanoVNA-F, but with so many other
instruments already on hand, the priority is a bit low.

For new users trying to choose between an "analyzer" and a NanoVNA, I'd
say that the Nano is cheap enough that you should get both! If you decide
you don't like one, it shouldn't be hard at all to resell it, maybe on eBay
or the QTH.com classifieds.

Doug, K8RFT

On 5/14/20 3:44 PM, David Eckhardt wrote:

A bit more expensive and does not have all the plotting capabilities (Smith
Chart) of the NANO's, but can be used in daylight and with a hand shield,
in the sunlight.
Accuracy Agility Instrument (AAI) Model N2061SA

On Thu, May 14, 2020 at 1:19 PM Oristo <ormpoa@...> wrote:

The NanoVNA is great indoors, especially used with a PC or android.
But it's nearly impossible for me to see and read it outdoors, at my

antenna location.

An LCD viewfinder works:

On Thu, May 14, 2020 at 11:06:56AM +0000, Larry Rothman wrote:

Please refer to the forum WIKI (link at bottom of every emailed message)


On Thursday, May 14, 2020, 6:40:31 a.m. GMT-4, namerati@... <namerati@...> wrote:

Is there web page with a summary of the differences between the different NanoVNA
models?

On Thursday, May 14, 2020, 7:07:55 a.m. GMT-4, Rich NE1EE <ne1ee@...> wrote:

I see the point. Thanks for the reply. I see a lot of thread hijacking, which is why I asked. I think that there are --- and have been for 40 years --- common sense guidelines for managing forum threads and emails. Mostly ignored these days, making it very difficult to find our way around. It is difficult for the newbie to find needed info in the fog of thread confusion. To make matters worse, there are now several hardware, firmware, and software branches.

And to make matters worse, there is so much turmoil in the supply chain these days...more confusion. I'd like to buy one of the newer devices (I was an early adopter, and would now like to upgrade), but I find it difficult to see the trees for the forest. Despite being an early adopter, I am not qualified to write a set of reasonable tests and results...I am a software and hardware engineer, but there is much to do with the nanoVNAs that I have not kept up with...partly because it is difficult to do so.

Perhaps there ought to be a pinned thread that covers you question...it certainly has been addressed in so many posts. But those posts are difficult to find, because the subject lines often don't relate. I'd love to see such a thread addressing each device and how to "acceptance test" it, and then, just as you say, we would be able to post the names of vendors, what was supplied, and the results of testing....as well as updates months later...are we content or not, and why.

On 2020-05-13 18:03:-0700, you wrote:

Hi, Rich,

I thought my post was relevant to the? thread .. in that it's hard for newbies to know if we have one of the better/worse nanoVNA's sold on "Amazon" or Aliexpress for instance.

It seems people like me find it difficult to know which buyer to go to, and without knowledgeable feedback like "The device failed xxx test"? - on aliexpress everyone posts 5 starts - which helps nobody.

I didn't find the suggestion below "I would strongly advise purchasing for Hugen's site:" before i bought mine ;(

Danke.

--
73 de Rich NE1EE
On the banks of the Piscataqua

On Thursday, May 14, 2020, 6:40:31 a.m. GMT-4, namerati@... <namerati@...> wrote:

Is there web page with a summary of the differences between the different NanoVNA
models?

On 2020-05-13 18:03:-0700, you wrote:

Hi, Rich,

I thought my post was relevant to the thread .. in that it's hard for newbies to know if we have one of the better/worse nanoVNA's sold on "Amazon" or Aliexpress for instance.

It seems people like me find it difficult to know which buyer to go to, and without knowledgeable feedback like "The device failed xxx test" - on aliexpress everyone posts 5 starts - which helps nobody.

I didn't find the suggestion below "I would strongly advise purchasing for Hugen's site:" before i bought mine ;(

Danke.