Hello all, I have heard weak FSK on 136.6 kHz during morning hours only, can not use Spegram etc on LF until get my Rx --> PC interface QRM somehow cleaned. Will continue daily Field strength measure
Measurements of UK Decca's and some other stations : -- Day -- 20Feb 21Feb 22Feb 23Feb 24Feb Sun Mon Tue Wed Thu Time, UTC -- 2140- 2150- 2140- 2140- 2150- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Hi Peter, I am interested to see the .JPG picture, please... Suffer from bad ICM above 137.5 kHz, also something on 136.1..136.3, wonder if SXV is causing it. Checked CFH this morning around 0330 but
Hejsan Christer, Just curious - how do you calculate your Fs. 0.3 W at 2 km should give 68 dB(uV/m) 0.6 W at 2 km should give 71 dB(uV/m) Both calculating and measuring Fs is difficult. Main point is
Measurements of UK Decca's and some other stations : -- Day -- 25Feb 26Feb 27Feb 28Feb 29Feb FRI SAT SUN MON TUE Time, UTC -- 2140- 2305- 2215- 2145- 2145- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Gamal, There was no need to measure other than *Green* freq's. It is a miracle that all 7 Green freqs have been possible to measure day after day. A lot of QRM. I'll produce a summary of measurements
CQ LF de Vaino, OH2LX, 2nd March 2000: Monitoring started at 2000 UTC. SXV 135.8 was weaker than normal, it slowly faded down with minimum around 2050, while background noise level increased some 15.
Hi Mike, Thanks for interesting pictures of CFH signal variation. You can certainly receive it much better than I can here. It is most probably due to my qth on higher latitudes. On 2nd March I weakl
Measurements of UK Decca's and some other stations : -- Day -- 01Mar 02Mar 03Mar 04Mar 05Mar WED THU FRI SAT SUN Time, UTC -- 2140- 2140- 2140- 2145- 2240- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Hi all, Some time ago I wrote a story for SRAL magazine about (LF) progation terminology with a drawing or a sketch showing the proposed radiated components* near the radiating short vertical monopol
Measurements of UK Decca's and some other stations : -- Day -- 06Mar 07Mar 08Mar 09Mar 10Mar MON TUE WED THU FRI Time, UTC -- 2140- 2145- 2145- 2150- 2235- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Measurements of UK Decca's and some other stations : -- Day -- 11Mar 12Mar 13Mar 14Mar 15Mar SAT SUN MON TUE WED Time, UTC -- 2125- 2150- 2115- 2140- 2150- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Measurements of UK Decca's and some other stations : -- Day -- 16Mar 17Mar 18Mar 19Mar 20Mar THU FRI SAT SUN MON Time, UTC -- 2140- 2140- 2145- 2105- 2105- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Hi Larry, a very short comment follows: Assume your noise level depends on ionospherically reflected signals, possibly from natural sources as the case often is at least on lower latitudes. My corr g
Working on the material left by ex YLE Meas station... Does anyone know the email address of C. Gordon Van Aruan whose article "Influence of Atmospheric Humidity on Low-Frequency Radio Ground Waves"
Measurements of UK Decca's and some other stations : -- Day -- 21Mar 22Mar 23Mar 24Mar 25Mar TUE WED THU FRI SAT Time, UTC -- 2130- 2120- 2120- 2130- 2140- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Measurements of UK Decca's and some other stations : -- Day -- 26Mar 27Mar 28Mar 02Apr 03Apr SUN MON TUE SUN MON Time, UTC -- 2130- 2035- 2030- 2135- 2040- -- kHz Ch *d,km AZI* *Indicated ESH2 input,
Actually no reason to interfere in these discussions, but as late as in 1960's, I unambiguously refused to believe that measuring pure ground wave field strength can be so demanding, (not to talk abo
