Re: [IRCA] FARDA, ctd.

[Chuck Hutton <charlesh3@xxxxxxx>]

Guy:
 
I think you have the 2 loop array, if my memory is right. At the -6 dB points, its main lobe should be 114 degrees wide.
 
LSR in UAE is 0228 UTC and LSS for you was 0100 UTC. There's a good chance your 0128 UTC reception is grayline but I suppose it could also be good old normal propagation, especially given that the last reflection point and D layer transition are well into darkness. But we'll never know....
 
The reason you didn't see any Farda receptions in the Queen Charlottes DXpedition log is because with our mid-September timeframe, we were nowhere close to darkness paths to the mid east. A shame, but at least those fish are waiting to be caught some other time.
A lovely reception, regardless of possible path geometries.
 
 
Chuck
> From: dx@xxxxxxxxxxxxx> To: irca@xxxxxxxxxxxxxxxx> Date: Mon, 3 Nov 2008 14:33:14 -0500> Subject: Re: [IRCA] FARDA, ctd.> > Hi Pete,> > At this time of year, the sunset terminator at Grayland is roughly at> 330-340 / 150-160 degrees, based on my > quick check of Geoclock. However, the Wellbrook Phased Array is very broad> lobed in the forward direction (with a > good null on the back side). Signal pickup at 90 degrees to the axis is> greatly reduced, too.> > This broad lobe is the reason I can successfully use it for Asian TP DX at> the campsite; if the antenna was aimed > any further to the North it could pick up RFI noises from the computers,> monitors, etc. at my DXing position in the > yurt. That happened on my previous visit to site #Y114 at Grayland, and I> ended up moving the antenna the next > night so it aimed at about 300 degrees.> > A proper Beverage antenna (not always that achievable at Grayland) would be> narrower, and at 300 degrees might > miss out on the R. Farda signal as it travelled along the grayline of> 330-340 degrees.> > Going from memory of the antenna plots I've seen, the Wellbrook Phased> Array has a lobe of approx. 60 degrees > (depending on take-off angle and other variables). So it easily covers a> large swath of the horizon, including the > Farda signal coming from the North-Northwest.> > It would be great to know the exact angle Farda was taking as it was> received on the coast. Perhaps there was some > skewing going on, but my understanding about true grayline reception is> that signals follow the terminator closely, > from transmitter to receiver. > > 73,> > Guy> > > Original Message:> -----------------> Date: Mon, 3 Nov 2008 09:46:06 -0800> From: Pete Taylor <ptdx@xxxxxxxxxxx>> Subject: [IRCA] FARDA, ctd.> To: Mailing list for the International Radio Club of America> <irca@xxxxxxxxxxxxxxxx>> Message-ID: <63C90340-ED5E-43E2-8067-54A0A0D207A5@xxxxxxxxxxx>> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed> > Guy Atkins recently logged Farda-1575 at 0130 GMT (6:30pm PDT) from > Grayland with his array oriented toward 300 degrees. Please pardon my > naivete on technical matters but it seems to me that at that angle, > the signal would be going through a reasonable amount of daylight > before it got here whereas if it were coming from the east, it would > be going through almost total darkness. Also isn't the hop to the > east a shorter distance? What am I missing?> > Pete Taylor> > > > --------------------------------------------------------------------> mail2web LIVE – Free email based on Microsoft® Exchange technology -> http://link.mail2web.com/LIVE> > > > _______________________________________________> IRCA mailing list> IRCA@xxxxxxxxxxxxxxxx> http://montreal.kotalampi.com/mailman/listinfo/irca> > Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers> > For more information: http://www.ircaonline.org> > To Post a message: irca@xxxxxxxxxxxxxxxx> 
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