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- Subject: Re: [IRCA] KiwiSDR's / other remote receivers, comments welcomed
- From: Mark Connelly <markwa1ion@xxxxxxx>
- Date: Thu, 5 Oct 2017 12:54:11 -0400
- Delivered-to: irca@xxxxxxxxxxxxxxxx
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Hi Mauno. Thanks for your contribution to the topic.
I haven't logged onto your set-up yet but I may check into it during the winter.
Generally far northern and eastern Europe receptions have only a slight correlation to what's going on here because of the position of the auroral absorption zone.
Receivers in Europe that would be most relevant to my reception would be on the coast of Portugal or just offshore in Azores, Madeira, etc. Also reasonably relevant would be receivers positioned on the northern coast of Spain and in western France, England, and Ireland.
Receivers farther east or north would be primarily useful to identify stations within Europe and western Asia though more southerly stations such as Africans that could be reaching here could, on a Scandinavian receiver, be covered by stations that are farther north or east: stations that the aurora would be absorbing en route to here.
For illustration, typical reception of 10 kW stations from Spain here is usually as good as, or better than, 100 kW stations from the UK or farther north and east.
The situation is different farther west in the US and Canada where the paths to Europe are through the auroral "doughnut hole" which would favour the handful of northern European stations over the Mediterranean area stuff that tends to dominate on the US East Coast. Because of the "doughnut hole", Scandinavian DXers get Alaska, BC, WA, OR, ID, MT etc. much better than those signals can be heard either on the US East Coast or in southwestern Europe. It's a whole other DX world up there in the Arctic. Once in a while the auroral absorption zone will shrink to the point that high latitude propagation will be good to here. Lately this hasn't happened very often.
Mark Connelly, WA1ION
South Yarmouth, MA, USA
<<
Remote receivers are also useful for checking what really is on the air
and what one might be hearing at home, when there isn't yet an ID. Also
checking exact carrier frequencies is extremely useful in my mind, it's
a pity, that this is properly possible only in Perseus network.
There's a group in Yahoo called sdr-filesharing, which continues Guy's
work in offering platform for sharing interesting files. Not much
traffic lately, but some very interesting files have been shared.
Don, thank you for the link. I thought all Kiwi's were at
http://sdr.hu/map , but seems not. I'd really like to use also
http://sdrspace.com/Version-2 and http://sdranywhere.com/cloud/sdrweb.py
, but without map finding interesting new receivers is too slow. I hope
they will have maps some day.
Mark, have you ever checked my receivers here in eastern Finland?
Perseus and also SDR-IQ in sdrspace.com/Version-1 . Not really
noise-free, but relatively quiet and connected to a 300-450 m Beverage
acc. to time and conditions. Asia starts coming in now around 1400 UTC,
hopefully today is already a bit better than past weekend.
Is there a way in KiwiSDR network for the user to reduce RF gain? It
seems to be a problem in some rxs.
Mauno
host of Karelia MW DX
>>
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