Floor S meter vs Panadapter
I recently build the Elecraft kit to provide a reference signal for
calibration of my SDR1000. With the 50 uV reference my S meter shows
-73 dBm (S 9.0). At 1 uV reference, the meter shows -107 dBm ( S
3.3). These two numbers show the S meter is perfectly calibrated
-calibrate the receiver.)
Mark
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mark Amos
Sent: Tuesday, June 19, 2007 9:29 PM
To: 'Doug McCormack'; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Noise Floor S meter vs Panadapter
Doug,
I had the same problem
- Original Message -
From: Eric Wachsmann [EMAIL PROTECTED]
To: 'Tim Ellison' [EMAIL PROTECTED]; 'Doug McCormack'
[EMAIL PROTECTED]; flexradio@flex-radio.biz
Sent: Thursday, June 14, 2007 11:04 AM
Subject: Re: [Flexradio] Noise Floor S meter vs Panadapter
This is close
I recently build the Elecraft kit to provide a reference signal for
calibration of my SDR1000. With the 50 uV reference my S meter shows
-73 dBm (S 9.0). At 1 uV reference, the meter shows -107 dBm ( S
3.3). These two numbers show the S meter is perfectly calibrated.
When I remove the Elecraft
@flex-radio.biz
Subject: [Flexradio] Noise Floor S meter vs Panadapter
I recently build the Elecraft kit to provide a reference signal for
calibration of my SDR1000. With the 50 uV reference my S meter shows
-73 dBm (S 9.0). At 1 uV reference, the meter shows -107 dBm ( S
3.3). These two numbers
i would terminate the antenna connection into a 50 ohm load to measure
noise.
phil AB2JL
- Original Message -
From: Doug McCormack [EMAIL PROTECTED]
To: flexradio@flex-radio.biz
Sent: Thursday, June 14, 2007 11:29 AM
Subject: [Flexradio] Noise Floor S meter vs Panadapter
I recently
in a 3.3 KHz
bandwidth.
- Dan, N7VE
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Doug McCormack
Sent: Thursday, June 14, 2007 8:30 AM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Noise Floor S meter vs Panadapter
I recently build the Elecraft kit
]
[mailto:[EMAIL PROTECTED] Behalf Of Philip J Gentile
Sent: Thursday, June 14, 2007 7:54 AM
To: Doug McCormack; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Noise Floor S meter vs Panadapter
i would terminate the antenna connection into a 50 ohm load to measure
noise.
phil AB2JL
- Original
PROTECTED]
radio.biz] On Behalf Of Tim Ellison
Sent: Thursday, June 14, 2007 10:47 AM
To: Doug McCormack; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Noise Floor S meter vs Panadapter
Do you have averaging turned on with the Panadapter? The S meter will
display the highest value it sees
At 08:54 AM 6/14/2007, Philip J Gentile wrote:
i would terminate the antenna connection into a 50 ohm load to measure
noise.
phil AB2JL
When making noise power measurements one has to be aware of the fact
that the instantaneous power can vary quite widely. The noise is a
normally distributed
Ellison' [EMAIL PROTECTED]; 'Doug McCormack'
[EMAIL PROTECTED]; flexradio@flex-radio.biz
Sent: Thursday, June 14, 2007 11:04 AM
Subject: Re: [Flexradio] Noise Floor S meter vs Panadapter
This is close, but technically, a bit different. The multimeter actually
calculates the power within
At 09:00 AM 6/14/2007, Tayloe Dan-P26412 wrote:
What you see on the display and what is on the meter are two different
things. If you are sampling at 48 KHz, what you see on the panadapter
is the noise per 11 Hz bin. What you see on your meter is the noise
from all the 11 Hz bins within the
Doug:
Please ignore all of the erroneous information you have been given.
Everyone is supposed to have read the thousands and thousands of emails
and to have learned everything that was ever said here. You did this right?
;-)
Sorry, I just couldn't resist. Let me explain. This is
Hi Bob,
Forgive me if this is in the manual - What are the attack and decay time
constants on the S meter? Are they adjustable? - I haven't found
anywhere to adjust them.
73, Greg, ZL3IX
Robert McGwier wrote:
Doug:
Please ignore all of the erroneous information you have been given.
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