Markus - can you define a descrete freq that you would be consider the best s/n in Europe for me to plop a carrier on for XPQ measurement?
Still some way but Im happy with the coherent nature of the GPS derived signal source for the Decca driver. The source will be the HP3336b GPS 10MHz ref'd
From:
[email protected]To:
[email protected]CC:
[email protected]Date: Sun, 2 Sep 2012 18:15:18 +0200
Subject: Re: LF: WE2XPQ 137.7752, DCF39 appears
Laurence,
I'd be interested to see whether XPQ could be
detected in a microHz spectrogram here, either on Chris' grabber
in Bucharest
or mine in Nuernberg. Can you give your exact
frequency, and could you transmit a stable uninterrupted carrier for a couple of
hours? We've been seeing narrow traces from US East coast stations
before, but I wonder how much effect transpolar Doppler could
have.
Is DCF-39 really as strong as 25 dB in 100
Hz, ie. 45 dB/Hz, or would that be in 0.1 Hz? What are the best
hours?
Best 73,
Markus (DF6NM)
Sent: Sunday, September 02, 2012 4:21 AM
Subject: LF: DCF39 appears
Nice to see DCF39 appearing on QRSS this evening over the Pole. Ive
not seen it since Spring here in Alaska. About 25dB noise in 100Hz (ish units).
Not dark yet either,
Laurence KL1X WE2XPQ Wasilla AK
Sent: Sunday, September 02, 2012 2:17 AM
Subject: LF: XPQ
Further testing on 137.7752 ish carrier only ongoing - still in
shakedown mode but sweeps of individual 400w Modules show the same resonance and
output parameters from 2005 :-)
http://kl7uk.com/XPQ2.jpgSet
up in garage.
Laurence We2xpq KL1X Wasilla Alaska
Sent: Thursday, August 30, 2012 6:34 PM
Subject: LF: WE2XPQ 137.7752
A little bit of Nostalgia - WE2XPQ Wasilla Alaska is very
intermittently testing on 137.7752 DFCW various speeds and the odd bit of
QRSS - Power will be up to 2W ERP but is to be confirmed.
Periods of operations, modes and powers will vary as Im trying to
remember all the ins and outs of why I installed 'X" relay to do a "Y" function
as its been 7 years or so.
Transmitter for the moment is the
Decca 5501, drivers are FT817 h/b transverter, Loop with around 100m
circumference at 50ft or so and phase meter. The Birch trees bend a lot more
than the OKie Cottonwoods so not sure how much detuning will happen as
thing become more slack or as the trees become snow laden -
Laurence We2xpq KL1X Wasilla Palmer Alaska
BP51IP
