Date   
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.

Re: Power Meter

Nick Kennedy
 

Most people do a power calibration on their PHSNA system at a "mid-range"
frequency like 10 MHz but do not do one over the expected frequency range
of the detector. A well calibrated scope is adequate for that (mid-range)
purpose.

The high end of the complete system is about 30 or 60 MHz depending on
which DDS is used.

If well constructed, the detector used alone can be reasonably flat up to
about 500 MHz, per Hayward and Larkin. I haven't had the equipment to
validate that, however. I expect it's OK up through 2 meters. without much
doubt.

I recently bought a used Fluke 6060A/AN signal generator at a great price.
It's 1980s technology and not at all state of the art. But I used it to
check the response of my AD8307 detector yesterday, from 10 MHz though 300
MHz at -10 dBm input. Referred to the reading at 10 MHz, it was down 0.8 dB
at 100 MHz and 1.8 dB at 300 MHz. Again, the signal generator itself isn't
super accurate, but I felt that this was a good validation that the
detector is working as it should.

73-

Nick, WA5BDU



On Tue, May 8, 2018 at 3:02 PM Philippe CREIS <Philippe.Creis@...>
wrote:

Hi all,

i think using a scope is not a good solution at all. Measuring a voltage
with an oscilloscope is a good idea. Provided you know the subtleties of
this device. An oscilloscope becomes very quickly false, even very false in
the measurement of a voltage. Look at this excerpt from an article
published by Yokogawa, and this is true for all the scopes:
"The analogue bandwidth is defined as the frequency at which the amplitude
measured by the oscilloscope has reduced by 3dB (-3dB point). This is
approximately 70.9% of the actual signal amplitude (Figure 1). This means,
for example, if a 200MHz pure sine wave with 10 Volts peak to peak is
measured with an oscilloscope with a bandwidth of 200MHz, the amplitude of
the displayed signal will be approximately 7 Volts peak to peak."

So, if you want to calibrate your wattmeter based on an AD8307 with an
oscilloscope on 430MHz, you will have to find a very, very expensive
oscilloscope !!!! Look rather on the side of the references of power, to
realize yourself, it will be much more precise.

--
73... Philippe - F4GRT




Message du 08/05/18 00:19
De : "Pravin via Groups.Io"
A : PHSNA@groups.io
Copie à :
Objet : Re: [PHSNA] Power Meter

Hi Alfredo,
It will be a over kill to purchase a power enter for calibration of
AD8307 chip meter . If you have an access for an Oscilloscope and having a
carbon resistor for 51 Ohms you can simply measure the voltage across the
resistor and compare it with your Ad8307 chip values .
Power = Square of Vrms/50 . Nothing will be more precise than that and
no need of sending power meters to be calibrated in US every now and then .

--------------------------------------------
On Mon, 5/7/18, Alfredo Mendiola Loyola via Groups.Io wrote:

Subject: [PHSNA] Power Meter
To: PHSNA@groups.io
Date: Monday, May 7, 2018, 5:51 PM

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.








Re: Power Meter

Pravin
 

Hi Philppe,
Yes you are correct . But here we are talking about HF ( up to 30 MHz) only . So if we can get a scope with bandwidth up to 60 MHz it will be good for our purpose. I haven't seen a modern scope below that bandwidth . So almost any school or even "makerspace" labs will have such scopes. And we need not own such a scope as it is required only once in an year or so for confirmation of calibrations. Hope this helps .
(Pravin)
AB9XC

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

On Tue, 5/8/18, Philippe CREIS <Philippe.Creis@...> wrote:

Subject: Re: [PHSNA] Power Meter
To: PHSNA@groups.io
Date: Tuesday, May 8, 2018, 4:02 PM

Hi all,

i think using a scope is not a good solution at
all. Measuring a voltage with an oscilloscope is a good
idea. Provided you know the subtleties of this device. An
oscilloscope becomes very quickly false, even very false in
the measurement of a voltage. Look at this excerpt from an
article published by Yokogawa, and this is true for all the
scopes:
"The analogue bandwidth is
defined as the frequency at which the amplitude measured by
the oscilloscope has reduced by 3dB (-3dB point). This is
approximately 70.9% of the actual signal amplitude (Figure
1). This means, for example, if a 200MHz pure sine wave with
10 Volts peak to peak is measured with an oscilloscope with
a bandwidth of 200MHz, the amplitude of the displayed signal
will be approximately 7 Volts peak to peak."

So, if you want to calibrate
your wattmeter based on an AD8307 with an oscilloscope on
430MHz, you will have to find a very, very expensive
oscilloscope !!!! Look rather on the side of the references
of power, to realize yourself, it will be much more
precise.

--
73... Philippe - F4GRT
 
 
 
 
> Message du 08/05/18 00:19
> De : "Pravin via Groups.Io"
> A : PHSNA@groups.io
> Copie à :
> Objet :
Re: [PHSNA] Power Meter
>
> Hi Alfredo,
> It will
be a over kill to purchase a power enter for calibration of
AD8307 chip meter . If you have an access for an
Oscilloscope and having a carbon resistor for 51 Ohms you
can simply measure the voltage across the resistor and
compare it with your Ad8307 chip values .
> Power = Square of Vrms/50 . Nothing will
be more precise than that and no need of sending power
meters to be calibrated in US every now and then .
>
>
--------------------------------------------
> On Mon, 5/7/18, Alfredo Mendiola Loyola
via Groups.Io  wrote:
>
> Subject: [PHSNA] Power Meter
> To: PHSNA@groups.io
> Date: Monday, May 7, 2018, 5:51 PM
>
> 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.
>
>
>
>
>
>
>

Re: Power Meter

Steven Dick
 

The DC reference is fine. Yu can then switch to AC, assuming there is no error in switching from DC to AC in amplitude. But AC amplitude accuracy will depend on scope bandwidth vs measured signal bandwidth under test. For good accuracy, the scope should have ~10X the bandwidth of the highest frequency being measured.

-----Original Message-----
From: Alfredo Mendiola Loyola via Groups.Io
Sent: Tuesday, May 08, 2018 4:22 PM
To: PHSNA@groups.io
Subject: Re: [PHSNA] Power Meter

Steven,

The ADR03-EP gives dc voltage, I think we need a sine wave reference to calibrate our RF equipment.

73
Alfred.

Re: Power Meter

Alfredo Mendiola Loyola
 

Steven,

The ADR03-EP gives dc voltage, I think we need a sine wave reference to calibrate our RF equipment.

73
Alfred.

Re: Power Meter

Steven Dick
 

Quite correct. If you need the amplitude to be accurate to ~1%, you need to
derate your scope by a factor of 0.1x, meaning that on your 100MHz scope you
can only capture 10MHz with a 1% error in amplitude. If you reduce this
reqquirement to 3% accuracy, you need to derate it by a factor of ~0.3x, so
a 100MHz scope can accurately measure 30MHz to 3%.

-----Original Message-----
From: Philippe CREIS
Sent: Tuesday, May 08, 2018 4:02 PM
To: PHSNA@groups.io
Subject: Re: [PHSNA] Power Meter

Hi all,

i think using a scope is not a good solution at all. Measuring a voltage
with an oscilloscope is a good idea. Provided you know the subtleties of
this device. An oscilloscope becomes very quickly false, even very false in
the measurement of a voltage. Look at this excerpt from an article published
by Yokogawa, and this is true for all the scopes:
"The analogue bandwidth is defined as the frequency at which the amplitude
measured by the oscilloscope has reduced by 3dB (-3dB point). This is
approximately 70.9% of the actual signal amplitude (Figure 1). This means,
for example, if a 200MHz pure sine wave with 10 Volts peak to peak is
measured with an oscilloscope with a bandwidth of 200MHz, the amplitude of
the displayed signal will be approximately 7 Volts peak to peak."

So, if you want to calibrate your wattmeter based on an AD8307 with an
oscilloscope on 430MHz, you will have to find a very, very expensive
oscilloscope !!!! Look rather on the side of the references of power, to
realize yourself, it will be much more precise.

--
73... Philippe - F4GRT




Message du 08/05/18 00:19
De : "Pravin via Groups.Io"
A : PHSNA@groups.io
Copie à :
Objet : Re: [PHSNA] Power Meter

Hi Alfredo,
It will be a over kill to purchase a power enter for calibration of AD8307
chip meter . If you have an access for an Oscilloscope and having a carbon
resistor for 51 Ohms you can simply measure the voltage across the
resistor and compare it with your Ad8307 chip values .
Power = Square of Vrms/50 . Nothing will be more precise than that and no
need of sending power meters to be calibrated in US every now and then .

--------------------------------------------
On Mon, 5/7/18, Alfredo Mendiola Loyola via Groups.Io wrote:

Subject: [PHSNA] Power Meter
To: PHSNA@groups.io
Date: Monday, May 7, 2018, 5:51 PM

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.






Re: Power Meter

Philippe.Creis@...
 

Hi all,

i think using a scope is not a good solution at all. Measuring a voltage with an oscilloscope is a good idea. Provided you know the subtleties of this device. An oscilloscope becomes very quickly false, even very false in the measurement of a voltage. Look at this excerpt from an article published by Yokogawa, and this is true for all the scopes:
"The analogue bandwidth is defined as the frequency at which the amplitude measured by the oscilloscope has reduced by 3dB (-3dB point). This is approximately 70.9% of the actual signal amplitude (Figure 1). This means, for example, if a 200MHz pure sine wave with 10 Volts peak to peak is measured with an oscilloscope with a bandwidth of 200MHz, the amplitude of the displayed signal will be approximately 7 Volts peak to peak."

So, if you want to calibrate your wattmeter based on an AD8307 with an oscilloscope on 430MHz, you will have to find a very, very expensive oscilloscope !!!! Look rather on the side of the references of power, to realize yourself, it will be much more precise.

--
73... Philippe - F4GRT

Message du 08/05/18 00:19
De : "Pravin via Groups.Io"
A : PHSNA@groups.io
Copie à :
Objet : Re: [PHSNA] Power Meter

Hi Alfredo,
It will be a over kill to purchase a power enter for calibration of AD8307 chip meter . If you have an access for an Oscilloscope and having a carbon resistor for 51 Ohms you can simply measure the voltage across the resistor and compare it with your Ad8307 chip values .
Power = Square of Vrms/50 . Nothing will be more precise than that and no need of sending power meters to be calibrated in US every now and then .

--------------------------------------------
On Mon, 5/7/18, Alfredo Mendiola Loyola via Groups.Io wrote:

Subject: [PHSNA] Power Meter
To: PHSNA@groups.io
Date: Monday, May 7, 2018, 5:51 PM

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.






Re: R: Re: [PHSNA] info

Nick Kennedy
 

It's funny, but I was just about to send out that same information and
Ignacio beat me to it by a few minutes.

The voltage monitoring function was added by Ignacio late in the game so
the hardware modifications don't appear on the schematics. It's a very
useful addition because it tells you the supply voltage and also adds
over-voltage and under-voltage alarms.

It's quite easy to start the system up and forget to turn on the 12 V
supply. The Arduino will be running on the 5 V from the USB but readings
will have large errors. The low voltage alarm will tell you what's wrong
when this happens.

73-

Nick, WA5BDU

On Tue, May 8, 2018 at 9:25 AM EB4APL <eb4apl@...> wrote:

Hi Ambro and other new builders,

The PHSNA last version for Arduino NANO and DDS-60 has a lot of options
on the board, so if you are going to build it study the schematics and
the info carefully and you can remove from the schematics all that is
unnecessary for your needs. This also applies to the builders which
plan to assemble it in a perforated board.

After you get the info, please read the "PHSNA User's Guide 1r42.pdf"
that is in https://groups.io/g/PHSNA/files/Windows%20PHSNA, specially
pages 19 and 20, which explains how to add a couple of resistors to
support the new supply voltage measurement function.

Regards,
Ignacio, EB4APL


El 07/05/2018 a las 22:19, Ambro IW2FVO escribió:
I can not find what indicated.could you post a link please?73, ambro




----Messaggio originale----

Da: kennnick@...

Data: 7-mag-2018 20.59

A: <PHSNA@groups.io>

Ogg: Re: [PHSNA] info



Hello Ambro,



All of the software you need is in the folder "Windows PHSNA". That

includes two Arduino 'ino' files plus the Windows executable.



You will also find a user's guide for the software and a guide on how to
do

the Arduino software installation, for any people not familiar with it.

There are sample "parameters.txt" and "memories.txt" files which the

Windows PHSNA program reads to configure itself for your specific system.



As for schematics -- since there are many variations on the software, I

recommend you first look over "PHSNA FAQ Sheet.pdf" which is in the top

level (last page) of the files area. I hope it will guide you to the

correct document for the schematics. But if there's any trouble, we can

help you.



73-



Nick, WA5BDU



On Mon, May 7, 2018 at 1:40 PM Ambro_IW2FVO via Groups.Io <iw2fvo=

yahoo.com@groups.io> wrote:



hi to all in this forum,
I have to build the Phsna for one of my friend ham.,
I would like to use the parts already on our hands without the use of a
pcb.
We have : Arduino nano, ad9850 DDS, ad 8307 detector all working.
Need the following_
where to download the latest schematic diagram and part list
where to download the latest arduino firmware
where to download the last pc software.
thanks for all,
73 ambro



Re: R: Re: [PHSNA] info

EB4APL
 

Hi Ambro and other new builders,

The PHSNA last version for Arduino NANO and DDS-60 has a lot of options on the board, so if you are going to build it study the schematics and the info carefully and you can remove from the schematics all that is unnecessary for your needs.  This also applies to the builders which plan to assemble it in a perforated board.

After you get the info, please read the "PHSNA User's Guide 1r42.pdf" that is in https://groups.io/g/PHSNA/files/Windows%20PHSNA, specially pages 19 and 20, which explains how to add a couple of resistors to support the new supply voltage measurement function.

Regards,
Ignacio, EB4APL

El 07/05/2018 a las 22:19, Ambro IW2FVO escribió:
I can not find what indicated.could you post a link please?73, ambro




----Messaggio originale----
Da: kennnick@...
Data: 7-mag-2018 20.59
A: <PHSNA@groups.io>
Ogg: Re: [PHSNA] info

Hello Ambro,

All of the software you need is in the folder "Windows PHSNA". That
includes two Arduino 'ino' files plus the Windows executable.

You will also find a user's guide for the software and a guide on how to do
the Arduino software installation, for any people not familiar with it.
There are sample "parameters.txt" and "memories.txt" files which the
Windows PHSNA program reads to configure itself for your specific system.

As for schematics -- since there are many variations on the software, I
recommend you first look over "PHSNA FAQ Sheet.pdf" which is in the top
level (last page) of the files area. I hope it will guide you to the
correct document for the schematics. But if there's any trouble, we can
help you.

73-

Nick, WA5BDU

On Mon, May 7, 2018 at 1:40 PM Ambro_IW2FVO via Groups.Io <iw2fvo=
yahoo.com@groups.io> wrote:


hi to all in this forum,
I have to build the Phsna for one of my friend ham.,
I would like to use the parts already on our hands without the use of a
pcb.
We have : Arduino nano, ad9850 DDS, ad 8307 detector all working.
Need the following_
where to download the latest schematic diagram and part list
where to download the latest arduino firmware
where to download the last pc software.
thanks for all,
73 ambro

Re: Power Meter

Steven Dick
 

I don't know how accurate you are trying to get but if you are within say three percent, that is usually more than accurate. A scope is a good way to perform an accurate measurement, but scope calibration is always the limiting factor, and most hams don't bother with periodic accurate calibration of their scope. You could make your own fairly accurate homebrew relatively low cost calibrator based on a precision reference such as the Analog Devices ADR03-EP, a 10 volt reference with initial accuracy of 0.2 percent for $5.15 or the TI REF102 with an accuracy of +10V +/- 0.0025V for $5.02. I've been meaning to build a precision reference using one of these just for a calibration sanity check of my scope.

-Steve K1RF

-----Original Message-----
From: Pravin via Groups.Io
Sent: Monday, May 07, 2018 6:53 PM
To: PHSNA@groups.io
Subject: Re: [PHSNA] Power Meter

Yes every measurement device require periodic calibration . But in my long long experience the standard test equipments manufactured my HP, R&S, Marconi, Anritsu etc maintain the calibrations for long long time . Actually if you are not a precision manufacture of systems these equipments are good for long time.
(Pravin)

--------------------------------------------
On Mon, 5/7/18, Alfredo Mendiola Loyola via Groups.Io <mendiola_loyola=yahoo.com@groups.io> wrote:

Subject: Re: [PHSNA] Power Meter
To: PHSNA@groups.io
Date: Monday, May 7, 2018, 6:24 PM

Do Oscilloscopes require
calibration each n years?

73
Alfredo
OA4AJP

Re: info

Nick Kennedy
 

OK. Since this is a question that comes up occasionally, I have gone though
the Files area and listed files that show schematics for various
configurations:

*Where are the schematics?*

First, about the variations.

· There were two types of DDS boards from eBay that would work with
the system, which we called Type I and Type II. The differences are mainly
in the layout, so if you are not using N5IB’s custom boards it may not
matter.

· There were also AD9850 and AD9851 DDS boards.

· Jim and Jerry determined that the post-DDS filter provided on the
eBay boards was not adequate, so they designed a new filter to be used.

· The system uses an additional amplifier after the DDS to provide
some gain, followed by an attenuator to assure a constant 50 ohm output
impedance. One version of the amplifier used a 2N5109 transistor and a
later version used an MMIC.

· The AD8307 board followed the schematic of Hayward and Larkin
fairly closely so there aren’t many variations in the schematic. Some
options for the type of op-amp to be used were provided. Also, a zener on
the input to the ADC was removed because it adversely affected accuracy.



Now, for the locations of some schematics:



*For the power meter:*

Go to the folder Files>AD8307 Power Meter>

You will find the schematic of the AD8307 circuit as designed by W7ZOI and
W7PUA, redrawn by N5IB. This file is called “W7ZOI W7PUA RF Power
Meter.pdf”.

In the same folder you find information on calibrating the circuit and on
use of the optional analog meter movement. There is also a spreadsheet
listing acceptable substitutes for the AD820 op-amp.



*Other schematics for the system:*



Files>PHSNA version using DDS-60 DDS module & Arduino NANO

In this folder is a file called PHSNA for DDS60 and Arduino NANO -
Prototype Builders Notes.pdf
<https://groups.io/g/PHSNA/files/PHSNA%20version%20using%20DDS-60%20DDS%20module%20&%20Arduino%20NANO/PHSNA%20for%20DDS60%20and%20Arduino%20NANO%20-%20Prototype%20Builders%20Notes.pdf>
with
a schematic using an Arduino with the Midnight Designs DDS-60 board:



Files>Type-1 PHSNA - version using Type-1 DDS module & Arduino UNO

In this folder is a file called COMBO 2N5109 Schematic and Layout.pdf
<https://groups.io/g/PHSNA/files/Type-1%20PHSNA%20-%20version%20using%20Type-1%20DDS%20module%20&%20Arduino%20UNO/COMBO%202N5109%20Schematic%20and%20Layout.pdf>
.
This file shows using the DDS with the 2N5109 post-DDS amplifier. It also
includes a schematic of the AD8307 circuit.

The same folder also contains the file: PHSNA ERA-3+ Type I DDS rev6r10.pdf
<https://groups.io/g/PHSNA/files/Type-1%20PHSNA%20-%20version%20using%20Type-1%20DDS%20module%20&%20Arduino%20UNO/PHSNA%20ERA-3+%20Type%20I%20DDS%20%20rev6r10.pdf>
which shows using the type I AD9850 DDS with an ERA-3+ MMIC post-amplifier.



Files>Type-2 PHSNA - version using Type-2 DDS module & Arduino UNO

In this folder is a file called: PHSNA Type II Details 21 MAR 2014.pdf
<https://groups.io/g/PHSNA/files/Type-2%20PHSNA%20-%20version%20using%20Type-2%20DDS%20module%20&%20Arduino%20UNO/PHSNA%20Type%20II%20Details%2021%20MAR%202014.pdf>
.
It shows use of the “Type II” DDS from eBay. It shows how to modify the
filter on the DDS board with a schematic for the improved filter. The full
schematic for DDS plus Arduoino and the ERA-3+ MMIC is shown.



All of these folders also contain other files with useful information on
calibration, coil winding, BOMs and so on.

Again the file “PHSNA FAQ Sheet.pdf” at the top level of the Files area has
useful information on the overall system including a description and photos
of what is meant by Type I and Type II DDS boards.



73-


Nick, WA5BDU




On Tue, May 8, 2018 at 7:40 AM Ambro IW2FVO <ambrogio.riboli@...>
wrote:

Hi Nick,

I did find out the windows PHSNA and its 14 tabs but I still can not
find the latest connection diagram or system schematic diagrams.
Any additional help please ?
73, Ambro



Re: info

Norberto Modanesi
 

Hola Ignacio:
Era miembro en Yahoogroups, por loque, entiendo debería selo también en io.
De todos modos, solicité una nueva inscripción.
73
Norberto

-----Mensaje original-----
De: PHSNA@groups.io [mailto:PHSNA@groups.io] En nombre de EB4APL
Enviado el: martes, 08 de mayo de 2018 09:38 a.m.
Para: PHSNA@groups.io
Asunto: Re: [PHSNA] info

The key phrase is "if you are a member", you will nor see files and
photos if you are not.

Regards,
Ignacio, EB4APL

El 07/05/2018 a las 22:45, Norberto Modanesi escribió:
Hi Nick:
The only links I see are: Home, Messages and hashtags.
73.


-----Mensaje original-----
De: PHSNA@groups.io [mailto:PHSNA@groups.io] En nombre de Nick Kennedy
Enviado el: lunes, 07 de mayo de 2018 05:20 p.m.
Para: PHSNA@groups.io
Asunto: Re: [PHSNA] info

Well, today is my first time to look at the new group location also. But if
you are in the PHSNA group and are a member, the files area should be
visible.

First, the group location is here:

https://groups.io/g/PHSNA

From that home page in the upper left I see a list of 11 links and 'Files'
is the 9th one.

After you click files you may see that there are a lot of files and
directories. There's navigation at the lower right to go through four (4)
pages of files and file folders.

I hope this helps.

BTW, this message should have a line that takes you to the PHSNA home page.

73-

Nick, WA5BDU



On Mon, May 7, 2018 at 2:46 PM Norberto Modanesi <
norberto.modanesi@...> wrote:

Can't find the files area in groups.io.
Help please.
73 - LU5DNM

-----Mensaje original-----
De: PHSNA@groups.io [mailto:PHSNA@groups.io] En nombre de Nick Kennedy
Enviado el: lunes, 07 de mayo de 2018 03:59 p.m.
Para: PHSNA@groups.io
Asunto: Re: [PHSNA] info

Hello Ambro,

All of the software you need is in the folder "Windows PHSNA". That
includes two Arduino 'ino' files plus the Windows executable.

You will also find a user's guide for the software and a guide on how to do
the Arduino software installation, for any people not familiar with it.
There are sample "parameters.txt" and "memories.txt" files which the
Windows PHSNA program reads to configure itself for your specific system.

As for schematics -- since there are many variations on the software, I
recommend you first look over "PHSNA FAQ Sheet.pdf" which is in the top
level (last page) of the files area. I hope it will guide you to the
correct document for the schematics. But if there's any trouble, we can
help you.

73-

Nick, WA5BDU

On Mon, May 7, 2018 at 1:40 PM Ambro_IW2FVO via Groups.Io <iw2fvo=
yahoo.com@groups.io> wrote:

hi to all in this forum,
I have to build the Phsna for one of my friend ham.,
I would like to use the parts already on our hands without the use of a
pcb.
We have : Arduino nano, ad9850 DDS, ad 8307 detector all working.
Need the following_
where to download the latest schematic diagram and part list
where to download the latest arduino firmware
where to download the last pc software.
thanks for all,
73 ambro







Thanks for the move to groups.io

David R. Hassall WA5DJJ
 

Dear Gang,



Thanks for the move to Groups.io. It feels really good. I am still using
both of my PHSNA UNITS and it makes my life easy. Trying to catch up with
what has been going on while I was off experimenting. I now have the
world's ONLY ALL BAND QRSS SUPER GRABBER. Now receiving on 160M, 80M,
60M, 40M, 30M, 20M 17M, 15M, 12M and 10M. Building the receivers for 630M
and 2200M as I write this. That grabber pictures are on qsl.net. with my
call at the end. It is really a site to see. If you have a QRSS
transmitter. Put it on the air and see if it still works. My grabber is
on 24/7 and I record each grabber picture. I couldn't have done it without
my PHSNA to build and align all of the bandpass filters for each frequency.
Many thanks to the PHSNA designers and software guru's. You all are
AWESOME!



Take care and have fun.





73 Dave Hassall WA5DJJ Las Cruces, New Mexico

Website: http://www.zianet.com/dhassall/

QRSS SUPER GRABBER WEBSITE: http://www.qsl.net/wa5djj/

Re: info

Ambro IW2FVO
 

Hi Nick,

I did find out the windows PHSNA and its 14 tabs but I still can not find the latest connection diagram or system schematic diagrams.
Any additional help please ?
73, Ambro

Re: info

EB4APL
 

The key phrase is "if you are a member", you will nor see files and photos if you are not.

Regards,
Ignacio, EB4APL

El 07/05/2018 a las 22:45, Norberto Modanesi escribió:
Hi Nick:
The only links I see are: Home, Messages and hashtags.
73.


-----Mensaje original-----
De: PHSNA@groups.io [mailto:PHSNA@groups.io] En nombre de Nick Kennedy
Enviado el: lunes, 07 de mayo de 2018 05:20 p.m.
Para: PHSNA@groups.io
Asunto: Re: [PHSNA] info

Well, today is my first time to look at the new group location also. But if
you are in the PHSNA group and are a member, the files area should be
visible.

First, the group location is here:

https://groups.io/g/PHSNA

From that home page in the upper left I see a list of 11 links and 'Files'
is the 9th one.

After you click files you may see that there are a lot of files and
directories. There's navigation at the lower right to go through four (4)
pages of files and file folders.

I hope this helps.

BTW, this message should have a line that takes you to the PHSNA home page.

73-

Nick, WA5BDU



On Mon, May 7, 2018 at 2:46 PM Norberto Modanesi <
norberto.modanesi@...> wrote:

Can't find the files area in groups.io.
Help please.
73 - LU5DNM

-----Mensaje original-----
De: PHSNA@groups.io [mailto:PHSNA@groups.io] En nombre de Nick Kennedy
Enviado el: lunes, 07 de mayo de 2018 03:59 p.m.
Para: PHSNA@groups.io
Asunto: Re: [PHSNA] info

Hello Ambro,

All of the software you need is in the folder "Windows PHSNA". That
includes two Arduino 'ino' files plus the Windows executable.

You will also find a user's guide for the software and a guide on how to do
the Arduino software installation, for any people not familiar with it.
There are sample "parameters.txt" and "memories.txt" files which the
Windows PHSNA program reads to configure itself for your specific system.

As for schematics -- since there are many variations on the software, I
recommend you first look over "PHSNA FAQ Sheet.pdf" which is in the top
level (last page) of the files area. I hope it will guide you to the
correct document for the schematics. But if there's any trouble, we can
help you.

73-

Nick, WA5BDU

On Mon, May 7, 2018 at 1:40 PM Ambro_IW2FVO via Groups.Io <iw2fvo=
yahoo.com@groups.io> wrote:

hi to all in this forum,
I have to build the Phsna for one of my friend ham.,
I would like to use the parts already on our hands without the use of a
pcb.
We have : Arduino nano, ad9850 DDS, ad 8307 detector all working.
Need the following_
where to download the latest schematic diagram and part list
where to download the latest arduino firmware
where to download the last pc software.
thanks for all,
73 ambro







Re: R: Re: [PHSNA] info

Ambro_IW2FVO
 

Nick,
I did find out all the 14 files located in the indicated windows PHSNA but still not able to locate the applicable schematic diagram or connection diagram.
Any more help please ?
73, Ambro

Re: Power Meter

Nick Kennedy
 

To calibrate, you need a sine wave source of known power level and a step
attenuator. Actually, a single attenuator would work but it's better to
have multiple points. There's information in the User's Guide and the
software has a built-in function for power calibration.

The source should have a frequency somewhere in "midrange" - perhaps 5 to
15 MHz.

I homebrewed two simple sources for my calibration. First was the -10 dBm
square wave calibrator by Bob Kopshi K3NHI and a 10 dBm, 10 MHz sinewave
calibrator by VE7BPO that I calibrated to K3NHI's circuit. I used a
homebrew step attenuator. Attenuators are pretty cheap and easy to build

You can find some folders in the Files area that describe how people did
calibrations. The circuits and articles I described can be found on the
web. I can provide some of the articles and circuits if needed.

Other suggestions I've heard here also sound good.

73-

Nick, WA5BDU

On Mon, May 7, 2018 at 4:51 PM Alfredo Mendiola Loyola via Groups.Io
<mendiola_loyola=yahoo.com@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.



Move to Groups.io

Ken
 

Thanks for the move to groups.io.

73

Ken VA3ABN

Re: Power Meter

dick faust
 

Sam Wetterlin has some information on his web site on how to build a calibrator and the theory behind the circuit. It is the fifth paragraph down, under the title "MSA Documentation Relating to Hardware" http://www.wetterlin.org/sam/

I made a version for myself and there is documentation on my web page along with Gerbers for OSH Park under "Calibration Source for VNA, PHSNA, Scopes or Spectrum Analyzers" http://www.k9ivb.net/VNA/index.htm

There was also a spreadsheet and documentation in the old Yahoo Groups File area [not sure where it is here] on how to calibrate with a battery and a pot by applying the DC directly to the AD8307 inputs.

Dick K9IVB

Re: Power Meter

Pravin
 

Yes every measurement device require periodic calibration . But in my long long experience the standard test equipments manufactured my HP, R&S, Marconi, Anritsu etc maintain the calibrations for long long time . Actually if you are not a precision manufacture of systems these equipments are good for long time.
(Pravin)

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

On Mon, 5/7/18, Alfredo Mendiola Loyola via Groups.Io <mendiola_loyola=yahoo.com@groups.io> wrote:

Subject: Re: [PHSNA] Power Meter
To: PHSNA@groups.io
Date: Monday, May 7, 2018, 6:24 PM

Do Oscilloscopes require
calibration each n years?

73
Alfredo
OA4AJP