Stefan - thanks
Ive only had one instance of an Eu station SM6BHZ "making it" to Alaska on 600m, if I recall< and that was on WSPR so dooable at the reasonable QRSS/DFCW speeds fer shur, thats on a rare day of course but Ive improved the Rx s/n since then by a dB or so which all helps.
Interesting that the LF engineering (MPF102/2N2222) L400B, having moved it around some ten locations and heights and now up a Birch tree only 15ft above the ground down by the frozen lake, is the clear dB or so winnner on s/n over the 2T K9AY and Large Tx loop at 137, but the K9AY wins on most bearings at 500. 9AY is just too small in capture at 137 here, and tx loop just too noisy.
Opps looks like we just had another after shock from the 5.8 Yesterday... this 22 storey Anchorage building rock and rolls.
Laurence KL 1 X
Date: Wed, 5 Dec 2012 00:11:32 +0100
From: [email protected]
To: [email protected]
Subject: Re: LF: Transpolar Long carrier test 137.7800 WE2XPQ tonight
Well, on the EU TA path it looks quite good, Jay is getting good
results at that time. There was some snow here, about 5 cm, which melts
now. So its all wet and thus the losses a bit higher, maybe 1 dB max.
About MF. I'm getting first impressions what is possible on 630m in
distances > 5000 km. It looks not easy at all to make that distance
above a land path. E.g. UA0SNV got me in QRSS-10 on LF but MF looks to
be much harder. OK my LF signal is stronger than my MF signal though,
anyway the difference is higher.
Would you think there may be a chance to see traces in QRSS-10 or
DFCW-15 on 630m in AK?
a continuous carrier test overnight on
137.7800 kHz from around 0100Z till around 1600Z Tonight (thats in a
few hours time).
Conditions over the Polar regions are getting better but less than fair
at the moment but worth investigating. A no show is still a result :-)
Transmitter will be the GPS/10MHz disciplined HP3336B via 4046 squarer
and 4426 driver to the Decca 5501 Amp at around 600W into a Fir tree
140m loop - ERP is likely to be less than 0.5W in the main lobe
The loop will be modified this coming week if the weather breaks but
its been blowing 40Kts gust and -25C so still nippy on the face and
fingers to do long term outside work. We are also in a "Red Flag"
warning area so have to be careful with sparks and flames..
Laurence KL 1 X Wasilla Alaska