Hi ... I think I got some signals when monitoring 135.920. I set up Argo to watch from 800Hz (135920) to 806Hz (135926), 60 second dot, slow. Unfortunately, it's summer here so static crashes are rea
There is a problem which will limit us to MS100 or slower anyway. It's that we have considerable difficulty compensating for the number of *milliseconds* delay through our transmitters and our recei
I "borrowed" this from NIST site. Hope that's useful. 73 Marcus PY3CRX/PY2PLL S. B. do Campo - GG66rf http://py.qsl.br Active from "DC" to 24GHz GIF image
This would seem to need much less engineering than processing the output of a GPS. Stewart G3YSX I can detect 60KHz from WWVB, but useless to lock anything ... so ... I use a Furuno OEM module, that
Hi Bob . . . You are venturing into the "operating impedance bridge" (OIB) idea. An article with some information is "Building an Operating Impedance Bridge" in QST, Nov 1979, pp 11-17. I think this
I need a help: I have an SWR bridge - 2 X 1:40 transformers on a conventional circuit and from this bridge I have two rectified voltages: forward and reflected. On the other side, if I have any react
<?color><?param 0100,0100,0100> Hi James et all ... James=> In the LF range, and loop inductances of the order of 10s of uH, 0.1 ohm will be significant. The copper octagon inductance I'm using to te
Hi all ... I took some readings using 3 different antennas and there's the results: (1.2m "diameter") covered by 26# magnetic wire, varactor tuned and MPF102 push-pull preamp. I'm trying to verify if
Hi ... Anyone with experience of CFA, who can point John into the right direction ? I got the mail direct, I assume than John is not subscribed, so please any responses with a CC to : I subscribed on
Hi ... Very nice performance, using a P III 800, 312MB RAM, P133 Motherboard with built in sound card (SIS630). Able to receive: MSK: 16KHz(GBR)/18.3KHz(FR)/19.8KHz(AUS)/20.1KHz/20,9KHz and 21.4KHz M
I´ve been reading about CFA on Antennex since 1999 and the controversy still there. Most of the experimenters that published some design abandoned the projects. We can feel this because the CFA´s rel
Hi Geri ... I use the selective level meter MV62 very successfully for LF reception, I also have a Siemens unit (see http://www.qru.de/MV61.htm). There is also an article on the internet about the ge
Hi ... Thanks for all that answered. I saw a steady carrier with slow QSB all night long at 137.043. No rtty or may be it was just idle. VTX3, GBR, WWVB, NAA, NAM etc were strong too. The European/Af
Hi ... What this carrier is? An amateur signal or an utility station? Is the freq exactly 137KHz? 73 Marcus, PY3CRX/PY2PLL GG66rf http://py.qsl.br Active from "DC" to 24GHz
Hi Rafael ... My antennas are 2m loop and Marconi T with base load and variometer for use with TX. So please, try to catch two signals, the same modulation scheme (seems SITOR at a slower baudrate) a
Hi Rafael ... What kind of hardware are U using ? I'm getting back to under 500KHz listening in some days. May be we can share some odd signals listening. I still waiting for Anatel special authoriza
Hi Trond ... Besides 132.24 and 146.40 kHz signals, now I´m shure that there´s TWO DATATRAK signals on 146.4KHz. One is very strong here (now peaking 15dBuV) and the other is weak. Different timings
Hi ... The same FSK, 100Hz shift, was received at 23°S/46°W at 4:30 UTC aprox, centered at 73.25KHz. Sometimes audible, but most of the time only detected on Spectran. Other signals: DCF77 (77.5K) de
