Date   
Re: Antuino to calculate db loss

 

What you read with antuinos In-Out direct connected is base number.

If you base is -21 and you get a reading of -26dbm then your loss is
5db

I wish I has an antuino 30-40 years back!

Have fun
--
Raj


At 16/10/2019, you wrote:

Hi Raj, yesterday when I tried to join the Antuino group I got the answer that my email was already added. But apparently I am not receiving the emails.

The version I have was built in late August and It showed values if I remember right (I have not it here right now) - 19 or - 21db depending on frequency. It is clear to me how to plot and see the readings on different frequencies but I cannot see how to measure the insertion losses eg. Maybe I have just to study the whole messages I missed on the Antuino group!

Il 16/ott/2019 13:18, "Raj vu2zap" < rajendrakumargg@...> ha scritto:
Ooz,
Join us on the antuino group..

Set your center freq, select SNA mode.
Connect filter input to the top (antuino OUT) connecter and filter out to bottom (antuino IN) connector.
click Plot.

The plotted graph has a cursor at the center, you can move the cursor with the knob
and take readings at different spots.

Raj

At 16/10/2019, you wrote:

I mean the loss in db within the passband of the filter. Or a loss in a cable.

Il 16/ott/2019 12:17, "iz oos via Groups.Io" <and2oosiz2= gmail.com@groups.io> ha scritto:
Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

Re: Antuino to calculate db loss

iz oos
 

Hi Raj, yesterday when I tried to join the Antuino group I got the answer that my email was already added. But apparently I am not receiving the emails.

The version I have was built in late August and It showed values if I remember right (I have not it here right now) - 19 or - 21db depending on frequency. It is clear to me how to plot and see the readings on different frequencies but I cannot see how to measure the insertion losses eg. Maybe I have just to study the whole messages I missed on the Antuino group!


Il 16/ott/2019 13:18, "Raj vu2zap" <rajendrakumargg@...> ha scritto:
Ooz,
Join us on the antuino group..

Set your center freq, select SNA mode.
Connect filter input to the top (antuino OUT) connecter and filter out to bottom (antuino IN) connector.
click Plot.

The plotted graph has a cursor at the center, you can move the cursor with the knob
and take readings at different spots.

Raj

At 16/10/2019, you wrote:

I mean the loss in db within the passband of the filter. Or a loss in a cable.

Il 16/ott/2019 12:17, "iz oos via Groups.Io" <and2oosiz2= gmail.com@groups.io> ha scritto:

Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

Re: OT: Yahoo Groups is going away

Michael Walker
 

Thanks Terry

Like other groups that have migrated to groups.io, will this group be doing the same thing as they have tools to easily migrate?

If so, would the files be migrated over ?

I am not sure who the moderators are, but if they do not have time to do it, I am sure there are others that might volunteer.

73, Mike va3mw

On Tue, Oct 15, 2019 at 8:51 PM Terry VK5TM <vk5tm@...> wrote:
Yahoo Groups is going away.

If you need any files, photo's or other data from any group you are member of, get it now, by the end of December it will all be gone.

Terry VK5TM

Re: OT: our group founder Hans wins Homebrew Heros' first award!

Jorge Luiz Fenerich
 

     Congratulations Hans, always great to be recognized for your work, I admire people like you and Ashhar Farhan, the amateurs of the world thank you for your work.
     73 by Jorge PY2PVT _._

Em ter, 15 de out de 2019 às 23:32, Ashhar Farhan <farhanbox@...> escreveu:

Hans, who has been a source of major inspiration for us all has been recognised as a homebrew hero. 

Though now known for his qrp lab kits, he has amazing stamina to get to the bottom of things and uncover new stuff. His website is a treasure trove of information that he has gleaned. From using LEDs as varactors to measuring phase noise to bulding his own oscilloscope, his work us mind blowing.

Yes, he started this group too. Congratulations Hans, you have always been my hero!

- f



--
  73 de Jorge PY2PVT
  Campinas SP
  GG67MD

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Edward Reynolds
 

I agree that while this is not the forum for local government issues, I’m glad it was posted. We in the state of Oregon probably would not have heard about this issue. Thankfully the Oregon leaders realize the reliability of the ham repeaters and their roll in times of backup communication needs vs a system that is over priced and not reliable.
Thanks to the group for their time, I read every post on this site, lots of great information I’ve got a UBITX ver. 5 I’m playing with. Keep up the great posts
Cheers
Ed N7SNT 


On Oct 15, 2019, at 9:31 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:

Normally you could take this up with the group moderator.
But in this case, perhaps your best plan is to start your own forum.  ;-)

95% of the messages here aren't of much interest to me.
That's OK.
So long as it remains civil.
Think I"ll go get a beer and kick off this thread again:  https://groups.io/g/BITX20/topic/18584402 

Jerry, KE7ER


On Tue, Oct 15, 2019 at 08:01 PM, Ken Hansen wrote:
As an international mail list (reflector) threads like this don't belong here.
 
It's specific to one state of one country, and there are literally dozens of more suitable venues than this for any discussion of this subject.
 
How does the policy of CalFire in California, USA Regarding repeater space on public land n the state of California impact the Lithuanian trying to assemble an HF station based on a uBitx or Bitx40?
 
It doesn't.

Ken, N2VIP

Re: Antuino to calculate db loss

 

You should check if your unit needs a mod.. connect in to out and see what is the dB reading in SNA mode.
if more than -20 i.e -17 or -14 then you need to do a mod listed in the antuino group.

The readings will be wrong without the mod as the IF will be over driven.

Raj

At 16/10/2019, you wrote:

Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

Re: Antuino to calculate db loss

 

Ooz,
Join us on the antuino group..

Set your center freq, select SNA mode.
Connect filter input to the top (antuino OUT) connecter and filter out to bottom (antuino IN) connector.
click Plot.

The plotted graph has a cursor at the center, you can move the cursor with the knob
and take readings at different spots.

Raj


At 16/10/2019, you wrote:

I mean the loss in db within the passband of the filter. Or a loss in a cable.

Il 16/ott/2019 12:17, "iz oos via Groups.Io" <and2oosiz2= gmail.com@groups.io> ha scritto:

Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

Re: Antuino to calculate db loss

iz oos
 

I mean the loss in db within the passband of the filter. Or a loss in a cable.


Il 16/ott/2019 12:17, "iz oos via Groups.Io" <and2oosiz2=gmail.com@groups.io> ha scritto:

Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

Antuino to calculate db loss

iz oos
 

Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Jerry Gaffke
 

Normally you could take this up with the group moderator.
But in this case, perhaps your best plan is to start your own forum.  ;-)

95% of the messages here aren't of much interest to me.
That's OK.
So long as it remains civil.
Think I"ll go get a beer and kick off this thread again:  https://groups.io/g/BITX20/topic/18584402 

Jerry, KE7ER


On Tue, Oct 15, 2019 at 08:01 PM, Ken Hansen wrote:
As an international mail list (reflector) threads like this don't belong here.
 
It's specific to one state of one country, and there are literally dozens of more suitable venues than this for any discussion of this subject.
 
How does the policy of CalFire in California, USA Regarding repeater space on public land n the state of California impact the Lithuanian trying to assemble an HF station based on a uBitx or Bitx40?
 
It doesn't.

Ken, N2VIP

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Ken Hansen
 

Terry, your message came thru, meaning you are a member.

Ken, N2VIP

On Oct 15, 2019, at 21:18, Terry Morris <terry.kb8amz@...> wrote:


Thought I belonged to this group. Waiting for approval.

Terry - KB8AMZ
Brimfield Twp, OH USA EN91hd
Linux User# 412308, Ubuntu User# 34905, PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195


On Tue, Oct 15, 2019 at 8:50 PM Jack, W8TEE via Groups.Io <jjpurdum=yahoo.com@groups.io> wrote:
I sure hope the hams say no to this $7500 tax plus annual lease costs. The day will come when these bureaucrats see the folly of their ways. I just pray lives aren't lost because of it.

Jack, W8TEE


--
Jack, W8TEE

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Ken Hansen
 

As an international mail list (reflector) threads like this don't belong here.

It's specific to one state of one country, and there are literally dozens of more suitable venues than this for any discussion of this subject.

How does the policy of CalFire in California, USA Regarding repeater space on public land n the state of California impact the Lithuanian trying to assemble an HF station based on a uBitx or Bitx40?

It doesn't.

Ken, N2VIP

Re: Gordon Gibby Digital Interface

 

All boards are Sold out! I will have new versions (same functions new layout and silk screens) soon.

 73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

OT: our group founder Hans wins Homebrew Heros' first award!

Ashhar Farhan
 

Hans, who has been a source of major inspiration for us all has been recognised as a homebrew hero. 

Though now known for his qrp lab kits, he has amazing stamina to get to the bottom of things and uncover new stuff. His website is a treasure trove of information that he has gleaned. From using LEDs as varactors to measuring phase noise to bulding his own oscilloscope, his work us mind blowing.

Yes, he started this group too. Congratulations Hans, you have always been my hero!

- f

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Terry Morris
 

Thought I belonged to this group. Waiting for approval.

Terry - KB8AMZ
Brimfield Twp, OH USA EN91hd
Linux User# 412308, Ubuntu User# 34905, PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195


On Tue, Oct 15, 2019 at 8:50 PM Jack, W8TEE via Groups.Io <jjpurdum=yahoo.com@groups.io> wrote:
I sure hope the hams say no to this $7500 tax plus annual lease costs. The day will come when these bureaucrats see the folly of their ways. I just pray lives aren't lost because of it.

Jack, W8TEE


--
Jack, W8TEE

OT: Yahoo Groups is going away

Terry VK5TM
 

Yahoo Groups is going away.

If you need any files, photo's or other data from any group you are member of, get it now, by the end of December it will all be gone.

Terry VK5TM

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Jack, W8TEE
 

I sure hope the hams say no to this $7500 tax plus annual lease costs. The day will come when these bureaucrats see the folly of their ways. I just pray lives aren't lost because of it.

Jack, W8TEE

On Tuesday, October 15, 2019, 5:35:00 PM EDT, Arv Evans <arvid.evans@...> wrote:



--
Jack, W8TEE

Re: GOT IT WORKING including the BFO numbers.Calibration #calibration

d.maccallum@...
 

OK have update my calculator again to include USB and LSB master calibration numbers.

Now on v5......last change all appears to work..... make sure you keep written record of your changes so you can change back to a know starting point if you type in the wrong numbers.

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Thomas Sharka
 

On Tuesday, October 15, 2019, 05:34:59 PM EDT, Arv Evans <arvid.evans@...> wrote:


locked Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Arv Evans