See http://www.rte.ie/news/2014/1219/667931-rte-longwave/ which says that this
service has been extended until 2017.
John F5VLF
> On 01 Nov 2015, at 16:21, Alan Melia <[email protected]> wrote:
>
> Ah nice! I did wonder about RTE but last time I considered it , it was under
> a death sentence. But it seems to have survived. I presume the 0.25Hz is due
> (possibly) to a gravity wave in the D-layer.
>
> Alan
> G3NYK
>
>> ----- Original Message -----
>> From: Andy Talbot
>> To: [email protected] ; [email protected]
>> Sent: Sunday, November 01, 2015 2:44 PM
>> Subject: LF: RTE 252kHz
>>
>> <image.png>
>>
>> Hope this graphic passes though the two groups / reflectors...
>> It shows a vectorscope plot of the 252kHz RTE broadcast carrier this
>> afternoon.
>>
>> The mean phase of the carrier is solid for hours, suggesting the
>> transmission is at least Rb controlled as the points do not rotate around
>> the vectorscope screen.
>> The interesting bit is the smaller circle with a radius of about 15 - 25% of
>> the mean signal amplitude, caused, I assume, by ionospheric frequency
>> shifting of a substantial skywave portion of the signal. The plot
>> represents 8.2 seconds worth of carrier history, the small circle taking
>> about 4 seconds to form, suggesting there is 0.25Hz worth of skywave
>> frequency shift associated with it.
>>
>> I'll try Droitwich as dusk arrives, but its annoying carrier modulation
>> means the resulting plot will not be so 'clean'
>>
>> Andy G4JNT
>>
>
[email protected]
Researching history of RABSON, BLACKSHAW, GAUNTLETT, VERLANDER and ROBSONNE
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