Hello folks, I'm a newcomer to this mailing list, Incidentally measured frequencies of DCF39/49 yesterday. DCF77 (77.5) and DCF39 (138.83/139.17) are continuously Fs recorded here at our Monitoring S
Mille grazie caro Gamal per informazione! That is very very useful for me as I intend to analyze the field strength measuring data produced at the Jokela Measuring station. I'm retired propagation re
The German Navy VLF antenna at Rhauderfehn (Ramsloh) 23.4 kHz is multiple tuned. It comprises eight 325.5 metre umbrella top loaded antennas. Each antenna is separately fed, and the 8 elements of the
LF Friends, Could anyone test calculate the antenna type with which we have done a lot of field work and measurements of all kind? Namely, 14 m tall Locator/NDB air navigation antenna operating on ai
Hello LF folks, Have been testing my new AR-7030 Plus receiver and after purchasing an 8 Ah Tudor battery some of the hum problems were cleared. With a 500 Hz Collins filter - which is absolutely nec
Dear friends, Your comments, especially that of Alan, G3NYK, were much appreciated. Having been a professional monitor for last 40 years this AR-7030 Plus was my first investment for 'own' receiver.
The art of listening (band monitoring), Earlier this week I was almost sorry that I once again triggered the discussion about receivers and listening strategies. I did so because AR-7030 Plus - sort
Dear LF folks, Discussion about how to improve reception, including filters, how to avoid ringing etc forms basis for succesful LF op, and succesful operation in general. About QST: I have QST on CD
We did some monitoring with Matti, OH2ZT. On the 9th Sept around 1930 UTC heard G3KEV calling cq on about 136.5 kHz QTH: 60:20:24.3 N 024:21:56.7 E (KP20EI41AS) AR-7030 Plus & 200m N/S wire laying on
Sorry to be lagging behind one whole month...it is October now... Heard three Alpha VLF stations, the two 'extra' stations probably not active. de Vaino, OH2LX -- original -- We did some monitoring w
Hi folks, This is just a comment. I recently wrote a short story for the Finnish SRAL magazine about Field strength measurements - which we have been doing for over 40 yrs. We have been flight measur
To (temporarily) conclude discussion of "The art of measuring Fs and EMRP of an LF/MF transmitter" from my part, I (exceptionally) ATTACH short text in hope that file is small enough and everybody ca
Hello, I'll comment some of Dick's comments right away. I was not at all talking about skywave (which we prefer to call ionospheric wave). Ground wave is an observable and measurable resultant of dir
Hi LF folks, CORRECTIONS & ADDITIONS to 136 kHz EMRP calculations: Earlier approximations were wrong, as is usually goes.. We could, at the last moment, arrange a Field strength measurements of Reino
Along with OH1TN Field strength measurements on the 29th Oct 1999, I measured Field strength of some other VLF and LF stations heard during daytime: Fs in dB(uV/m), Det: AVE (except for Alphas) RX: R
Friends, Let me refer to Walter, G3JKV a few months ago: Please - dont start it again... Not here anyway... 73 de Vaino, OH2LX At 21:54 13.11.1999 EST, you wrote: In a message dated 11/13/99 5:19:38
Real hams don't worry about blood pressures etc but CFA debate has been going on for about 10 years now especially on NEC reflector, so there is no reason whatsoever to set up another group. 73 to al
