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Re: Signal history logging interval
Ken,
There is intermediate storage in Console, look at the Signal History configuration options for the size of this buffer.
The value for a 1 second period is the average for all samples in that
Ken,
There is intermediate storage in Console, look at the Signal History configuration options for the size of this buffer.
The value for a 1 second period is the average for all samples in that
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By
Simon Brown
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#65457
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Re: Signal history logging interval
Hello Simon,
Thank you for the feature enhancement to allow logging of the signal history at intervals greater than 50 ms. I performed some limited testing of the revised program this morning and
Hello Simon,
Thank you for the feature enhancement to allow logging of the signal history at intervals greater than 50 ms. I performed some limited testing of the revised program this morning and
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By
Ken Sejkora
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#65456
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Re: Evenly spaced RFI.
Just as a matter of interest, when I worked for Department of Communications back in the 70s and 80s, we would measure color burst and horizontal sweep of a TV station by connecting a Racal HF
Just as a matter of interest, when I worked for Department of Communications back in the 70s and 80s, we would measure color burst and horizontal sweep of a TV station by connecting a Racal HF
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By
Brent Seres/ VE3CUS
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#65455
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Re: Evenly spaced RFI.
Kriss,
My 7040 has a pulsing wide band noise from 3925.5 to 3828.5.. 8=( I just measured it on my FTDX101MP.
I got this PC for it's low power requirements.
Jerry
W3CDE
Kriss,
My 7040 has a pulsing wide band noise from 3925.5 to 3828.5.. 8=( I just measured it on my FTDX101MP.
I got this PC for it's low power requirements.
Jerry
W3CDE
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By
Jerry Lofstead W3CDE
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#65454
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Re: Evenly spaced RFI.
My temporary desktop, a Dell Optiplex 7020 i7, has birdies in 75m, right on the frequency we have a PM gathering daily on 3928kHz. When I key the mic, it drops in frequency by about 2 kHz. When the
My temporary desktop, a Dell Optiplex 7020 i7, has birdies in 75m, right on the frequency we have a PM gathering daily on 3928kHz. When I key the mic, it drops in frequency by about 2 kHz. When the
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By
Kriss Kliegle KA1GJU
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#65453
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Re: Evenly spaced RFI.
Seems like everything is noisy now days...
Seems like everything is noisy now days...
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By
Brent Seres/ VE3CUS
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#65452
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Re: Evenly spaced RFI.
He answered that the original figure is correct and color burst harmonic is 100 kHz higher. I analyzed numbers a bit and concluded it very well could be a TV set or computer monitor
He answered that the original figure is correct and color burst harmonic is 100 kHz higher. I analyzed numbers a bit and concluded it very well could be a TV set or computer monitor
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By
jdow
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#65451
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Re: Evenly spaced RFI.
Well, the noise source is definitely not in our unit. I suspect it is a plasma set nearby. I've put up with it for 7 years and it is only a few hours a day. A move from here to a quieter QTH is in the
Well, the noise source is definitely not in our unit. I suspect it is a plasma set nearby. I've put up with it for 7 years and it is only a few hours a day. A move from here to a quieter QTH is in the
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By
Paul Egan <paul@...>
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#65450
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Re: Evenly spaced RFI.
Yes, like you said...maybe a typo. Back when I got my ticket in 1971, I only remember three sources of qrm....the TV color burst, my mom's sewing machine, and the electric mixer. How things have
Yes, like you said...maybe a typo. Back when I got my ticket in 1971, I only remember three sources of qrm....the TV color burst, my mom's sewing machine, and the electric mixer. How things have
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By
Brent Seres/ VE3CUS
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#65449
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Re: Evenly spaced RFI.
100kHz off.
{^_^}
On 20220119 08:31:13, Brent Seres/ VE3CUS wrote:
100kHz off.
{^_^}
On 20220119 08:31:13, Brent Seres/ VE3CUS wrote:
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By
jdow
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#65448
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Re: Evenly spaced RFI.
That might well be 47.06 kHz, the 150th harmonic is 7.059 MHz. Lemme see, NTSC was 15754200 kHz horizontal sweep rate, roughly. 47.06 is roughly 3 times that rate. 3 times 640 is 1920.
That might well be 47.06 kHz, the 150th harmonic is 7.059 MHz. Lemme see, NTSC was 15754200 kHz horizontal sweep rate, roughly. 47.06 is roughly 3 times that rate. 3 times 640 is 1920.
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By
jdow
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#65447
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Re: Evenly spaced RFI.
The "After" image suggests a plasma television is causing the interference. I had the same interference on 20 metres (right on top of 14.200 Mhz). I used a portable AM radio to find it and convinced
The "After" image suggests a plasma television is causing the interference. I had the same interference on 20 metres (right on top of 14.200 Mhz). I used a portable AM radio to find it and convinced
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By
Frank Eichel
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#65446
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Re: Evenly spaced RFI.
Thanks for the comments, everyone. Here are a couple of images.
The first one shows a before and after the RFI source starts:
The second one shows a few hundred khz. of bandwidth and the 47khz.
Thanks for the comments, everyone. Here are a couple of images.
The first one shows a before and after the RFI source starts:
The second one shows a few hundred khz. of bandwidth and the 47khz.
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By
Paul Egan <paul@...>
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#65445
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Re: IARU Region 1 Bandplan
Quickest way (AFAIK) is using "Update".
Select Favourites tab
Recall favourite of interest
Go to very bottom of screen and drag the handles of the light gray "span" window on the frequency span
Quickest way (AFAIK) is using "Update".
Select Favourites tab
Recall favourite of interest
Go to very bottom of screen and drag the handles of the light gray "span" window on the frequency span
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By
Max
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#65444
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IARU Region 1 Bandplan
Hi
Apologies for the silly question from a new user but could anyone tell me how to find the details about modifying the favourites to reflect the regon 1 frequencies? I'm really interested in
Hi
Apologies for the silly question from a new user but could anyone tell me how to find the details about modifying the favourites to reflect the regon 1 frequencies? I'm really interested in
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By
John Tyler
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#65443
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Re: Evenly spaced RFI.
Sounds like it could be the 2nd harmonic of an old NTSC color burst signal from an old TV
Sounds like it could be the 2nd harmonic of an old NTSC color burst signal from an old TV
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By
Brent Seres/ VE3CUS
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#65442
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Re: Signal history logging interval
Αλdo very useful to me
Would also like to see signal history to each virtual receiver!
It s something I asked long ago to Simon!
Αλdo very useful to me
Would also like to see signal history to each virtual receiver!
It s something I asked long ago to Simon!
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By
Zacharias Liangas
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#65441
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Re: Signal history logging interval
Thank you Simon..
PaulC
W1VLF
Check out my YouTube Channel
"When youth departs..May wisdom be enough"
On
Thank you Simon..
PaulC
W1VLF
Check out my YouTube Channel
"When youth departs..May wisdom be enough"
On
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By
Paul Cianciolo
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#65440
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Re: Signal history logging interval
Try it by all means, there are few other untested bits inside…
Simon Brown, G4ELI
https://www.sdr-radio.com
Try it by all means, there are few other untested bits inside…
Simon Brown, G4ELI
https://www.sdr-radio.com
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By
Simon Brown
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#65439
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Re: Signal history logging interval
Whoops.. Sorry I didn't see this email... I will wait for Ken to give it a try
PaulC
W1VLF
Check out my YouTube Channel
"When youth departs..May wisdom be enough"
Whoops.. Sorry I didn't see this email... I will wait for Ken to give it a try
PaulC
W1VLF
Check out my YouTube Channel
"When youth departs..May wisdom be enough"
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By
Paul Cianciolo
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#65438
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