Date   
Re: Very Late Start - Type 2

Curt
 

Will

Thanks for reply.

Okay I think I see Uno R3 for less than $8 from a us supplier. So now I just need to id which source for a type 2 9850. Not sure I am ready to mod and code for the si5351.

Curious what soldering you might need done to get yours assembled? I will be checking my stash for board components as I may have some extras there.

Curt

Re: Very Late Start - Type 2

William Kimber
 

Hi Curt,


Uno are cheap on Epay.  QRPLabs has a Si5351 module that fits in place of a AD98590 DDS board.  No connection other than I bought but like you yet to do anything with (catarachs don't help).


Cheers,

Will

On 26/09/18 12:01, Curt via Groups.Io wrote:
I confess a lot has happened since I ordered these Type 2 boards - maybe I was distracted when I wrecked my K2 or my house flooded maybe ...both okay now -- I digress.

Debating whether its 'practical' to find a UNO and type 2 DDS to populate the generator board - any suggested merchants (?) - or should I get a new host board (if one can be had) for newer hardware? (my initial shopping session had me seeing some sticker shock). I think I have most everything except misc hardware to assembled this stuff beyond these 2 key items. I honestly don't mind seeking a new generator board is that is the prudent approach?

73 Curt

Very Late Start - Type 2

Curt
 

I confess a lot has happened since I ordered these Type 2 boards - maybe I was distracted when I wrecked my K2 or my house flooded maybe ...both okay now -- I digress.

Debating whether its 'practical' to find a UNO and type 2 DDS to populate the generator board - any suggested merchants (?) - or should I get a new host board (if one can be had) for newer hardware? (my initial shopping session had me seeing some sticker shock). I think I have most everything except misc hardware to assembled this stuff beyond these 2 key items. I honestly don't mind seeking a new generator board is that is the prudent approach?

73 Curt

Re: freq and swr not saved to file when scanning

john
 

Nick, thanks, and I have to own up to a senior moment, I was dense and not thinking and was using the start button instead of hitting enter. Everything is working normally (except my head), but once I thought of the sequence of using it I realized my mistake. Thanks again, 73's
John, kd8paf

Re: freq and swr not saved to file when scanning

Nick Kennedy
 

Hello John,

It's been a while so I had to read the manual and do a scan.

I have PHSNA version 1.42 and Arduino software 1.7 and I'm running Windows
10.

I got the file to save OK. The file is a comma delimited text file, so
extensions TXT and CSV are the best to use. I used CSV.

How to kick off the scan is a little tricky. If you want a data file, you
type the filename in the box and press ENTER. If you just want a plot,
click START and skip the filename. I think you knew this, but don't use
START when you want the file.

My file is stored in the same folder where PHSNA resides, which is not in
the PROGRAMS folder or any similar sensitive location.

I presume everything else looks normal? You have communications between the
Arduino and the program? If you press the Return loss/SWR button you get
the static display with appropriate values?

On start-up, does the PHSNA window say "Arduino reports its revision as
1.7" or similar?

73-

Nick, WA5BDU

On Sun, Jul 22, 2018 at 12:07 AM john <jara8462@...> wrote:

I upgraded to phsna 1.7 for the arduino, and when I scan "return
loss/swr", putting a name in the window and start scanning, the results are
not saved to a file. I have tried both phsna141.exe and phsna142.exe,
neither saves to a file. I tried to put the suffix .txt and then leaving it
off, still doesn,t work. Pnsna140.exe and older, will not work with arduino
phsna1.7 version, it crashes, but still says " saving xx file to xx
folder", the newer versions of .exe do not. Is it something I am doing or
not doing, or is the option not in the latest two windows programs?
John, kd8paf



freq and swr not saved to file when scanning

john
 

I upgraded to phsna 1.7 for the arduino, and when I scan "return loss/swr", putting a name in the window and start scanning, the results are not saved to a file. I have tried both phsna141.exe and phsna142.exe, neither saves to a file. I tried to put the suffix .txt and then leaving it off, still doesn,t work. Pnsna140.exe and older, will not work with arduino phsna1.7 version, it crashes, but still says " saving xx file to xx folder", the newer versions of .exe do not. Is it something I am doing or not doing, or is the option not in the latest two windows programs?
John, kd8paf

Re: WB6OGD gaw analyzer compile errors

wb6ogd
 

Hi John,
Sorry you are having problems with this.
My code is not supported by the PHSNA group, if anyone has problems it is probably best to contact me directly.

The version you are using is my latest VERY EXPERIMENTAL version. It adds capabilities that probably nobody
but me wants. I only posted it because it does have a much improved menu system. I have added a ReadMe
file that hopefully explains. I have both DDS-60 (AD-9851) and Si5351 hardware in my PHSNA, probably
nobody else would even want to do this! User edits to the experimental Arduino code are expected.

THE ANSWER TO YOUR PROBLEM is that you should not install an Si5351 library. I have taken the code from the library
(from Etherkit) and inserted it into the .ino file. The Si5351.h file I posted needs to be in the same folder with the
.ino file. Then it should compile correctly. I did this because I have been burned too many times by Arduino
library updates that have killed my old projects.

73,
Gary
WB6OGD
garywinblad@...

WB6OGD gaw analyzer compile errors

john
 

I have been trying to compile WB6OGD's gaw program for the arduino and am getting an error "prototype for 'Si5351::Si5351()' does not match any in class 'Si5351'". The only thing I have changed is to direct the compiler to the si5351.h file in Documents/Arduino/libaries, instead of within the folder with the sketch, having installed the library there. I am running arduino version 1.8.5, on an I7 4820K 3.2ghz, with 32 gb memory, and win8.1 pro. I tried to compile to the nano, uno, and due boards with the same error, except the due, and the sketch wouldn't compile for it. Attached is the compiler error text file. I am not a programmer, have used the arduino boards and compiler for a while, and usually can find the causes for most errors so far, but need help on this one.

Re: I2C interface tip (for the WB6OGD additions)

Tony Jaques
 

Hi Gary,
Sorry for the delay in my reply; Computer problems. How unusual!
I do have two signal generators for up to 500MHz, and a Wavetek
sweep generator for up to 1000MHz, and a spectrum analyser, also
for up to 1000MHz, and an AIM Vector analyser, but even so I still
reach for my PHSNA first. It' the best piece of test gear I have ever
built.
Now for an admission: I did not want to modify my PHSNA to try
your addition (and indeed, could not for lack of panel space), so
having a DDS60 and an Arduino NANO doing nothing I built that
version for the purpose. (I already had a separate 8307 stand alone
demodulator on hand to feed the 'scope.)
But I did not take the 8307 output back to the Arduino. It was not
needed for the test. So I have not actually tried to use it in the original
PHSNA mode.
My assumption that later versions of the software needed a
different version of your PHSNA_VB.ino arose from "to be used with
his Windows C# version 1r40 (1.40)" in your notes". Of course, now
I think about it that assumption looks pretty silly. And if I had actually
tried to use it in "original" mode I would have discovered that for myself.
Sorry Gary.

Tony...

Re: I2C interface tip (for the WB6OGD additions)

wb6ogd
 

Hi Tony,
  Good to hear someone else tried it, despite a few others interest, I think you
and I are the only ones to use it.

By all means have at the code.  Nick was nice enough to let me modify his and
post my changes.  All the tricky, good code is his.

Not sure what you mean by Windows changes.  I set it up so that the interface to
Nick's Windows program should be un-affected, the Windows code thinks it
is talking to an un-modified PHSNA.  My PHSNA is my go-to instrument, I don't
have a commercial RF generator.  Been an exceptionally useful tool, thanks to
the creators!  Tuning filters with a scope has been very useful to me.  And being
able to just dial up a signal frequency with no PC needed is the normal mode.

Sorry about the address change.  I have been stung by that myself.
You can program a "search", keep throwing it addresses and write that address
to the LCD, when it shows up, you know the address.

If anyone wants any code changes, let me know.  I actually have more in mine,
DDS as well as Si5351 (to allow >60Mhz), etc.
73,
Gary
WB6OGD

On 7/4/2018 8:46 AM, Tony Jaques wrote:


Hi all,
 It is quite a while since  I  last  left a message for the
group. I see that  my  previous  offerings were from "Jaques
Anthony" but I found  it  quite  imposible  to get into this
group from groups.io. I had  to  subscribe  again -  so I am
now a new user!
  For a  long  time I have  been  meaning to  follow up the
excellent  PHSNA by trying  WB6OGD, Gary's additions  which
enable  it  to be  used  with a 'scope  to  make "tweaking"
circuits that much easier.
 Oh indeed it does.  Thank  you  very  much  Gary, and well
done.
 Anyone else contemplating the  same  route might be helped
by learning  of  a  problem  that  I  had  to  overcome. The
additions were obviously working, but with no information on
the 20 x 4 LCD issuing commands was not easy!
  It eventually dawned on me  that  the I2C interface board
on the display that  I  bought  used  an PCF8574A chip. That
uses address 3Fh by  default. (The "helpful" data sheet that
came with the display told me that it used 27h!). Gary's
software is designed to talk to the PCF8574 which does indeed
operate at 27h.
  So, if you get no display,  the  fix  is easy of course;
In Gary's PHSNA_VB.ino just change the line
 LiquidCrystal_I2C lcd(0x27,20,4);
 to
 LiquidCrystal_I2C lcd(0x27,20,4);

  I was wondering if anyone has  tried to make the addition
to the later versions of the  Windows software.  If not then
- unless Gary objects - I might have a go at it.

   Note that if you order the I2C interface modules, don't
use the Image of the board as a guide.  It may show the /A
chip, but you will almost certainly be sent the non A version!

Tony  (G3PTD).


Re: I2C interface tip (for the WB6OGD additions)

Tony Jaques
 

Oops!
That line change should have been to 0x3F,20,4 of course.
Tony...

Re: Software for the measurement receiver?

Tony Jaques
 

Hello Nick,
Thank you for the reply, and also for being kind enough to not simply type RTFM! which would have been somewhat deserved.
My rather weak excuse is that I find the PHSNA so useful that I use it a lot, and therefore do not normally have to refer to the manual. But, not having the measurement receiver (of course) I have never had reason to read that part. Indeed I have never even noticed the measurement receiver "button" on screen!
It did not occur to me to look in the manual for it now, because I already knew the manual didn't I?
Oh dear!

Actually I am also considering Ashhar Farham's version of the W7ZOI/K7TAU spectrum analyser, and deciding which to "do" - or even both. But that is getting off topic I suppose.

Thank you Nick
Tony...

Re: Software for the measurement receiver?

Nick Kennedy
 

Wow, it's been so long since I've used the measurement receiver that I've
about forgotten how it works.

I think I did those plots in Excel. Jim may have prettied them up a bit
with more legends for the PDF presentation.

Reading the manual, I think your only option in the Windows version is to
output the data to a file and pick it up in Excel, if desired. I don't
think the terminal version included the measurement receiver. But it's been
a while. You could still use it, but there may not be a subset of menu
functions devoted to it.

The reason you have the option to just scan the harmonics is that this
reduces the scan time a great deal. If you're interested in
non-harmonically related spurs, you'd do a more detailed scan.

" The second reason is that a display frequency calibration
allowing for the IF offset (3.26778MHz) is desirable.
I don't think that either command line or Windows versions
can do that."

Yes, the manual (User's Guide) says, "

The user must input the IF frequency, which is generally the center of the
crystal filter’s passband, and the frequency of the signal being examined.

In the harmonics mode, the software scans plus and minus 1 kHz of the
predicted harmonic frequencies to find the peak. Results for each harmonic
are displayed in the information box and may be put to a file.

In the Freq. Range mode, the software scans the user specified range of
frequencies. The information for all points is put to a file, which is
mandatory in this mode."


I guess I should play with it a bit to get more familiar with that
function, then revise the User's Guide as necessary.


73-


Nick, WA5BDU

On Wed, Jul 4, 2018 at 2:21 PM Tony Jaques <anthonyjaques94@...>
wrote:



Hi all,
I have been meaning to follow up the excellent PHSNA by
trying W5JH, Jerry's measurement receiver add-on, but it
occurs to me that different software is needed.
There seem to me to be two reasons for this:
Associated with the "Spectrum scan for Elecraft...." graph is
the statement that "The measurement receiver was programmed
to scan ... skipping segments".
The second reason is that a display frequency calibration
allowing for the IF offset (3.26778MHz) is desirable.
I don't think that either command line or Windows versions
can do that.
But I have not been able to find any other versions. Can
anyone point me the right way?

The graphs presented in the Measurement receiver overview
by Jim, N5IB don't look like the output from the Windows
version, so I assume that a command line version is used,
but I would like to know how those rather nice graphs were
produced.

Tony (G3PTD).





Software for the measurement receiver?

Tony Jaques
 

Hi all,
I have been meaning to follow up the excellent PHSNA by
trying W5JH, Jerry's measurement receiver add-on, but it
occurs to me that different software is needed.
There seem to me to be two reasons for this:
Associated with the "Spectrum scan for Elecraft...." graph is
the statement that "The measurement receiver was programmed
to scan ... skipping segments".
The second reason is that a display frequency calibration
allowing for the IF offset (3.26778MHz) is desirable.
I don't think that either command line or Windows versions
can do that.
But I have not been able to find any other versions. Can
anyone point me the right way?

The graphs presented in the Measurement receiver overview
by Jim, N5IB don't look like the output from the Windows
version, so I assume that a command line version is used,
but I would like to know how those rather nice graphs were
produced.

Tony (G3PTD).

I2C interface tip (for the WB6OGD additions)

Tony Jaques
 

Hi all,
It is quite a while since I last left a message for the
group. I see that my previous offerings were from "Jaques
Anthony" but I found it quite imposible to get into this
group from groups.io. I had to subscribe again - so I am
now a new user!
For a long time I have been meaning to follow up the
excellent PHSNA by trying WB6OGD, Gary's additions which
enable it to be used with a 'scope to make "tweaking"
circuits that much easier.
Oh indeed it does. Thank you very much Gary, and well
done.
Anyone else contemplating the same route might be helped
by learning of a problem that I had to overcome. The
additions were obviously working, but with no information on
the 20 x 4 LCD issuing commands was not easy!
It eventually dawned on me that the I2C interface board
on the display that I bought used an PCF8574A chip. That
uses address 3Fh by default. (The "helpful" data sheet that
came with the display told me that it used 27h!). Gary's
software is designed to talk to the PCF8574 which does indeed
operate at 27h.
So, if you get no display, the fix is easy of course;
In Gary's PHSNA_VB.ino just change the line
LiquidCrystal_I2C lcd(0x27,20,4);
to
LiquidCrystal_I2C lcd(0x27,20,4);

I was wondering if anyone has tried to make the addition
to the later versions of the Windows software. If not then
- unless Gary objects - I might have a go at it.

Note that if you order the I2C interface modules, don't
use the Image of the board as a guide. It may show the /A
chip, but you will almost certainly be sent the non A version!

Tony (G3PTD).

Re: Power Meter

Pravin
 

Hi Alfredo,
You may confirm the same with the company before you order it. In my long career as an Electronics Engineer I haven't come across any test equipment that does not require periodic re-calibration. Most of them are good for one year but some for 3 years. Once again the re-calibration is required only if you want precision accuracy traceable against primary standards. That is usually the case with high precision manufacturing like space, defense , cellphone etc. I think for HAM use one need not spend money for annual re-calibration.

73
DE AB9XC
(Pravin)

--------------------------------------------

On Fri, 5/11/18, Alfredo Mendiola Loyola via Groups.Io <mendiola_loyola=yahoo.com@groups.io> wrote:

Subject: Re: [PHSNA] Power Meter
To: PHSNA@groups.io
Date: Friday, May 11, 2018, 1:54 PM

I have decided to buy a Spectrum
Analyzer  https://www.rigolna.com/products/spectrum-analyzers/dsa700/

It has 500 mhz of bandwidth
and 5% of accuracy for dBm measurements. (+/-0.25dB)

I hope it doesn't require
anual calibrations.

73
OA4AJP
Alfredo.

Re: Power Meter

Alfredo Mendiola Loyola
 

I have decided to buy a Spectrum Analyzer https://www.rigolna.com/products/spectrum-analyzers/dsa700/

It has 500 mhz of bandwidth and 5% of accuracy for dBm measurements. (+/-0.25dB)

I hope it doesn't require anual calibrations.

73
OA4AJP
Alfredo.

Re: Power Meter

Nick Kennedy
 

I also used that circuit by Bob Kopski K3NHI for my calibration.

Note that some years after the article appeared in QEX, the author
discovered that currently manufactured AD8307 chips no longer responded the
same way when a square wave was applied, at least not over the full range
of inputs. It turns out the relationship still applied at -10 dBm but might
deviate at -20 dBm, so he released a revised schematic of his calibrator
that outputs the equivalent of -10 dBm.

I just browsed our Files section for the paper describing the issue and the
revised schematic, but didn't find them. So, I've uploaded them to my
WA5BDU folder in the group's Files section. The discussion is in "AN AD8307
ADVISORY - K3NHI.rtf", and the new schematic is in "RF POWER CALIBRATOR II
- Kopski.pdf".

73-

Nick, WA5BDU

On Wed, May 9, 2018 at 9:21 AM David Collins <ad7jt@...> wrote:

Hi Alfredo and the group,

Check this out and save some $$$.

http://sp-hm.pl/attachment.php?aid=13774

We use this technique in the MSNA and it works very good.


73,
Dave Collins - AD7JT




Re: Power Meter

David Collins
 

Hi Alfredo and the group,

Check this out and save some $$$.

http://sp-hm.pl/attachment.php?aid=13774

We use this technique in the MSNA and it works very good.


73,
Dave Collins - AD7JT

Re: Power Meter

DuWayne Schmidlkofer
 

I have had good luck with a RF power reference I built based on the one at W1GHZ.ORG. That and a step attenuator has been adequate for calibration of the AD8307 for general amateur radio use. Of course if you are using the power meter for commercial applications you may have to have it calibrated by a service that has a traceable standards.
DuWayne KV4QB

On 5/7/2018 5:51 PM, Alfredo Mendiola Loyola via Groups.Io wrote:
Hello,
I would like to buy a power meter to calibrate my AD8307
Is there a power meter that doens't require anual Calibration.
I line in Peru and it is expensive to send the power meter to US just for anual calibration like the Power Meter 6G of Minicircuits.
73
Alfredo.