In fact, various government agencies (European Broadcasting services, US Navy, etc.) have indeed been involved in LF transmissions for many years. We should keep in mind, however, that those entitie
Hello Cliff et all, At the present time, your best chance is to listen to our transmission on 136.745. This is a 175 watt transmitter connected to a fairly long antenna. Its transmissions have been r
PKZIP AUTHOR DIES by Dave Murphy, [email protected] Phillip W. Katz, 37, died on April 14 from complications arising from a long-time illness. As a young man, Katz released the PKZip file compression
[...] As the beacon is meant to be low-power (10mW and less) a relative small TX power can be used (50 Watts and less), so it can easily be overdimensioned to provide extra safety. Maplin has a smal
Hello all I am just designing a new RX for 136 kHz band. It will have IF on 1 MHz with high quality x-tal filter with bandwidth 200 Hz. The main selectivity will by obtained on AF with passive filte
Yes, it is the station reportedly used by India to talk to its submarines 73 Andre' If VTX3 is a callsign according ITU regulations it is from India ... talking about LF DX ! 73, Rik ON7YD
From Nov. 1985 "Technical Topics", a tip from G. Lucas G3TWE: "fill a small container (a [metal] bottle cap is ideal) with methylated spirits (I use rubbing alcohol, N4ICK) and light it. Place the en
Hello Peter Indeed, and all our thanks and best wishes from this side of the Atlantic 73 Andre' N4ICK Dear Peter, Many thanks for your fb service running the RSGB-LF-Group Reflector. It is just as im
This guy really is rude! Doesn't he understand how offensive these sort of remarks are? John, G4CNN the question is not so much whether one understands one is rude or not, but whether one _cares_ or
Dear Martin and LF Group, [...] Unfortunately, the CFA seems to have got surrounded by a lot of "pseudoscientific" hype, so it is difficult to tell serious information about it from the junk. Cheers
Hi Geri I had a similar problem when I wanted to amplify the output of a signal generator to drive my impedance matching unit. The amplifier had to be linear to minimise harmonic content. I used a c
[...] And what constitutes a QSO under QRSS conditions? The exchange of information presumably, but what should be the minimum time-lapse between sending and receiving? Seconds? Minutes? Hours? Days
[...] The WOLF signal is BPSK (at MS100), [...] Comments and suggestions welcome. 73, Stewart KK7KA Stewart is to be commended for developing the very interesting WOLF concept. One of the challenges
I was intrigued with Larry Pizzella s (Loose-Coupler) Diet Coke Can tuner when he first posted the photo on this web site.. This past weekend, I set up my own personal challenge to build a QRP CW tra
Hi Andre' that is not my appreciation of how off air standards work. You do not try to get a lock up in 64 microseconds (one frame). In this case the PLL is not trying to compensate for poor short t
It seems that one would be well advised to think twice before upgrading Microsoft products as both Office SR1/2 and now the entire operating system (Whistler) is in the enforced mode of "you can only
My now-retired Decca engineer pal who had a lot to do with setting up coil huts and tuning coils, Nigel Fenner, [...] I could probably persuade him to come along to Beaumont for the next conference
I wonder why a very highly professional designers of the Decca system went to the expense and complexity of copper sheet screening of the interior of their complete buildings containing the antenna
Hello Gang, AMRAD Listening Team #1 (that was deployed yesterday --Saturday-- until 0500 GMT near Washington DC) will not be listening tonight (Sunday) but Frank K0BRA and AMRAD Listening Team #2 (lo
