Hi Leandro, One of your questions was: even in the near field of a magnetic transmitting loop at 38.4kHz and at 100m distance while in the far field the E-field is 51.5dB stronger. 73 Clemens DL4RAJ
Here is a ready to go transverter from an Australian dealer. http://www.monitorsensors.com/ham-radio/630m-transverter Not cheap,though. See also http://www.monitorsensors.com/support/news/longest-63
In the other direction,from US to EU, conds were quite good,at least into grid JN68KJ79WJ. 2018-02-10 06:20 K4SV 0.475797 -24 -1 EM85wf 5 DL4RAJ/2 JN68kj 7496 46 2018-02-10 06:30 K4SV 0.475798 -22 -
Hi David, The 3 dB bandwidth is f0/Q and Q is defined as X/R where X is the reactance of the inductor and the capacitor at the resonant frequency. The lossless-Q of a small antenna is a useful academ
Hi , I had also my best night ever in WSPR from 14th to 15th February 2018. 1 DL4RAJ JN68kj K5DNL EM15lj 8406 km 2 DL4RAJ JN68kj W4BCX EL98pd 7958 km 3 DL4RAJ JN68kj WA4SZE EM65 7791 km 4 DL4RAJ JN68
Hi Alan, Chris is using #2 material mix,i.e. iron powder toroids,not ferrite. Iron powder is essentially not saturable because overheating will set the flux limit long before saturation occurs,see at
Hello Chris, if you use the common broadband design you surely can listen on LW and MW at the same time with a power splitter,e.g.like here https://ww2.minicircuits.com/app/AN10-001.pdf A diplexer is
Hi Alan, the loss depends on the design. For a wilkinson divider/combiner with about 30dB port isolation it's 3dB for each port, for a hybrid divider/combiner with 40dB port isolation it's 6dB. I agr
Last night I managed for the first time to spot six different US stations: 2018-03-16 04:20 W4BCX 0.475672 -27 0 EL98pd 5 DL4RAJ JN68kj 7958 km 2018-03-16 03:06 WA4SZE 0.475652 -29 0 EM65 0.2 DL4RAJ
http://www.pnp.de/lokales/landkreis_deggendorf/osterhofen/2891417_Ueber-200-Meter-hohe-Sendemasten-im-Kreis-Deggendorf-gesprengt.htm l with video links on this page. 73 Clemens DL4RAJ
Hello MFers, new record in JN68KJ : Seven T/A stations in one night. AE2EA was a new one for me. AE2EA and K5DNL had no other spots in EU/UK last night. 2018-03-31 04:40 K5DNL 0.475710 -23 0 EM15lj 5
Hi all, last night I was able to spot even seven different US stations on MW,see below. Interestingly all total 23 T/A spots were made between 3:40 and 4:10 that's within 30 minutes of the whole nigh
Hi Wolfgang, here reception was also very good with a SNR of 25-30dB in 150Hz BW. This time the setup was a Reuter Pocket SDR and an original PA0RDT Miniwhip (modified by Roelof for VLF) at ~3.5m agl
Hi Chris, I guess you have been on the english web site of Reuter. http://www.reuter-elektronik.com/html/pocket.html There you can also download the english manual. Reuter is using a very special and
Hi Riccardo, Amazing what performance can be achieved with this old beast and clever software. Congrats! 73 Clemens DL4RAJ =link&utm_campaign=sig-email&utm_content=emailclient> Virenfrei. =link&utm_c
