AM and FM DX

Amazing how long this opening has been going for!

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Interesting how the signal levels vary with frequency & time over the past hours from the same NCL tx site. The TX site shown above with Kone is misleading, but realistically no way to separate the frequencies with sites. Except in this case due to reception of Oceane 95.0 & Hepburn Maps & site height, reception has to surely be from Mont Koghis. (Dumbea)
Fascinating all day duct reception.
More Qld tropo reception days to come.

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While the New Cal troppo continues, lower power Central QLD stations appearing again from Yeppoon, Gladstone, Miriam Vale etc.

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Yeah, it seems like New Caledonia is going to be a bit of a complicated case for us for the transmitter ID code, with those various transmitters sharing the same frequency. We will probably look at adding weighting for antenna bearing at some point, but I think that’ll only fix some of these (the same kind of problem happens here in the UK too).

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No NRJ 93.5 on that list?

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It’s on there, I’d just filtered by transmitters using 90.0 with PI FE09

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I could imagine it’s difficult for you with the programming. HASL & mast height (and surrounding terrain) is a huge factor along with TX power for tropo ducting reception. Just the two received NCL TX sites determined during the past 24 hours to the best of my knowledge.
Of course this time of year Es reception isn’t a factor so one can eliminate many NCL TX sites.

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Mainly 90.0 and 95.0 NCL into the TEF node atm.

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Currently it weights using a fairly simple formula based on power and distance. It uses dBW rather than W to stop very high power transmitters being over-weighted.

There’s a trigger for sporadic E that will switch it to favour things around the 1500km mark. That only ever triggers in Europe and North America though where we have a data source (we use data from FMLIST when Es have been logged within the last 30 mins).

Like you say, the antenna height/HASL data could be very helpful for this too though. I know we have the antenna height data available at least for some stuff (including New Caledonia). We can work out the elevation from the transmitter co-ordinates, so this is definitely worth considering. Thanks!

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24 hours and counting.

Mackay back again tonight.

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It’s a hot airmass in SEQ: almost 30C at Toowoomba (650 m) but only 23C under the seabreeze at Cape Moreton. Not unlike the setups that produce NZ tropo down here.

Hopefully the westerlies don’t kill it; haven’t checked the Brisbane forecast but it’s a fairly hot outlook

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Still significant troppo this morning up to Mackay in the north (98.7, 104.3). Will also be checking 104.3 from south.

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2LM is there on 104.3 now from the Sunshine Coast TEF.

91.5 Gympie is there too weakly. This time I did hear them ID as “Positive 91point5 news update”, but some identifications still exclude the word ‘positive’. Staff still adapting to name change probably.

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Yes - was hoping for something more distant.

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:+1: :grin:

This coming Saturday evening is looking interesting on the predictive Hepburn Tropo Map, with a remote possibility of Norfolk Island on FM from SE Qld , but predictive models could change between now & then. :man_shrugging:

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89.9 is nice and clear thankfully in SEQ.

Lord Howe would be a bit of a stretch and possibly blocked by closer stuff. Confirmed to still use 100.1. I had an UNID BBC type station on 93.7 during last year’s mega tropo from Coffs to NZ which possibly could be from LHI, though 93.7 is blocked by Gympie in any event.

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Strong enough opening to the north that for the first time Mix FM is overpowering JJJ on 103.3

Not sure what Israel means
image
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Their tech is using the wrong Country Code data in RDS group 1A :face_with_diagonal_mouth:

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Or maybe it’s a response to Skid Row’s RT?

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