1470 - 0500 sign off

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simbeav
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1470 - 0500 sign off

Post by simbeav » 04 Dec 2018 09:51

Anybody know what the station is that signs off at 0500 on 1470 ?

I've seen the carrier go quite frequently, but today I go audio with soft music and a possible slogan or ID by OM at 04:53. It was too muffled here, though. There was some more talk at 0459 The last audio that I had was just before 0500, but the carrier stayed on quite strong until 0504

thanks

Simon

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 04 Dec 2018 11:01

I presume you mean 1470? Too weak here. Sorry. I hear an OM ID at exactly 04:53:45. Sign off at 05:03:54. Is that a blank carrier before sign-off?

simbeav
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Re: 1470 - 0500 sign off

Post by simbeav » 04 Dec 2018 11:42

I do indeed - sorry John. I didn't hear audio after 0500 and the carrier disappeared as you say at 05:03:54. Unfortunately, I couldn't even ID the language.

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 04 Dec 2018 13:26

Grab 1470 04-12-18.jpg
I have a suspicion this is WWBG Greensboro NC. The offset is right and I am sure this is Spanish with a bit of English thrown in near the top of the hour.

What do you think?

https://app.box.com/s/wxhood0nszrnj4quhtok2whg8p7ywxy0

simbeav
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Re: 1470 - 0500 sign off

Post by simbeav » 04 Dec 2018 13:44

That's the one
1470.JPG

simbeav
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Re: 1470 - 0500 sign off

Post by simbeav » 04 Dec 2018 13:46

Sorry - For some reason I missed the words under your picture. Let me check

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 04 Dec 2018 13:46

I used BBC Merseyside to calibrate against, if of interest. Very clearly we have the same signal at .003.

simbeav
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Re: 1470 - 0500 sign off

Post by simbeav » 04 Dec 2018 14:07

I think you are probably right from the offset, but I can't hear anything clear and yours is better than mine !

I wonder why it is signing off at midnight their time. You have a youtube vid with it on later than that in 2017.

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 04 Dec 2018 14:13

The only video of WWBG I have is this one: https://youtu.be/phEyUlAM60M

satnipper
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Re: 1470 - 0500 sign off

Post by satnipper » 04 Dec 2018 15:15

John - what Jag settings do you use to get the continuous spectrum display? I assume you are using latest V4?

Also - I am interested in why are you using BBC Merseyside for calibration? I usually use 909 or 1215 - however BBC Scousey is about 5 miles line of sight from here and makes 1480/90 unusable. The only freqs that are to be fair.

Cheers

Stuart

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 04 Dec 2018 17:30

autoscan.jpg
This is AUTOSCAN. One of several scanning apps in Jaguar. Click "S" (lower left of screen) Select AUTOSCAN and the hours you want it to scan, plus the speed. I use a speed of "10" which my computer can handle. It can just about manage "8" but either complains or frequencies at the top of the band get truncated because the computer has to re-write the next SCAN file before the previous one has finished being written.

Wallasey 1485 is supposedly locked to 1485.0000 and so provides a good reference frequency for calibration of the top third of the band.

I also use BBC 909 for calibration for the middle third of the band and BBC 693 for the bottom third. This is because there would be discrepancies in the carrier measurement, for example, at the top of the band, had I had calibrated using 693 or 909. It makes a few Hz difference and enough to render the carrier measurement beyond acceptable accuracy - in my case. I have seen one Perseus receiver so inaccurate that it would have needed reference carriers every 20 kHz across the band! So great care is needed.

Hopefully I explained that concisely.

satnipper
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Re: 1470 - 0500 sign off

Post by satnipper » 04 Dec 2018 19:56

You did - cheers!

satnipper
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Re: 1470 - 0500 sign off

Post by satnipper » 05 Dec 2018 11:51

"Wallasey 1485 is supposedly locked to 1485.0000"

Where did you hear/read this, JF? I have met a lad in the local radio club who works for Arquiva and actually turned off the Absolute Radio outlet on 1197 from Wallasey recently. Last time I met him I asked him to see if he could find out if 1215 was locked to 1215.0000. That was a month ago and not seen him since. However I'm sure he will be at Xmas bash on Friday - I''ll ask him about 1485 as well.

Cheer

Stuart

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 05 Dec 2018 12:04

It is common knowledge (although not in most UK households!) that certain BBC transmitters are locked. I forget where I saw this but I have seen 1485 in such a list. Maybe it was the MW Offsets Yahoo group. I cannot remember, but I have always understood it to be reliable. I was surprised to find that the Boston 1242 transmitter is reliably locked too.

It's good to keep on top of these things. Probably a good idea to begin a new thread for this subject. I will see what I can find.

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 05 Dec 2018 12:05

In fact, jumping ahead slightly, there might be something new on the horizon regarding offsets which I cannot tell you much about just yet as it's still in the planning stages. More soon I hope.

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John Faulkner, Skegness
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Re: 1470 - 0500 sign off

Post by John Faulkner, Skegness » 05 Dec 2018 12:08

http://www.myradiobase.de/mediumwave/mwoffset.txt

This is/was the old MW Offsets list. It's out of date now with the most recent update being from 2015. There were a lot of updates in 2014, then it dried up. A shame. Such a list needs keeping constantly up-to-date. But search through for BBC transmitters and note how many of them are clearly locked to .0000.

I have found the MW Offsets Yahoo group very useful. https://groups.yahoo.com/neo/groups/mwoffsets/

satnipper
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Re: 1470 - 0500 sign off

Post by satnipper » 05 Dec 2018 12:20

Thanks for the list - all three Wallasey txers were/are locked but 1197 has bitten the dust of course.

Cool

Cheers

Stuart

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