Mark,
Why would one use a 3 kHz bandwidth for a 100 Hz wide mode? Wouldn't
it be more realistic to do comparisons based on a noise bandwidth that
is the same as or just slightly wider than the signal bandwidth?
I don't have a choice in the matter because the band pass filter is fixed at
- Original Message -
From: Mark Miller [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Thursday, August 21, 2008 9:36 PM
Subject: Re: [digitalradio] Path Simulator Test - PSK FEC31
At 04:31 PM 8/21/2008, Tony wrote:
The path simulator adds Gaussian white noise to the input
If the SNR is negative, how is it that you can copy any signal?
73,
Mark N5RFX
At 02:36 AM 8/21/2008, Tony wrote:
__
Sensitivity Test - Direct Path
(no ionospheric disturbance)
Minimum SNR for error-free copy
Contestia 500/32-15db
just weaker than the noise.
Tony, K2MO
- Original Message -
From: Mark Miller [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com; digitalradio@yahoogroups.com
Sent: Thursday, August 21, 2008 5:42 AM
Subject: Re: [digitalradio] Path Simulator Test - PSK FEC31
If the SNR is negative, how
Why would one use a 3 kHz bandwidth for a 100 Hz wide mode? Wouldn't
it be more realistic to do comparisons based on a noise bandwidth that
is the same as or just slightly wider than the signal bandwidth?
- ps
Tony wrote:
Mark,
If the SNR is negative, how is it that you can copy any signal?
At 04:31 PM 8/21/2008, Tony wrote:
The path simulator adds Gaussian white noise to the input signal to simulate
a signal-to-noise ratio through a 3KHz band pass filter. If the SNR is less
than 0, it's below the noise level.
Tony, thanks the bandwidth is 3K for all modes that is what was
]
To: digitalradio@yahoogroups.com; digitalradio@yahoogroups.com
Sent: Thursday, August 21, 2008 5:42 AM
Subject: Re: [digitalradio] Path Simulator Test - PSK FEC31
If the SNR is negative, how is it that you can copy any signal?
73,
Mark N5RFX
At 02:36 AM 8/21/2008, Tony wrote
