[...] Apparently I am seeing the superposition of the (attenuated) groundwave plus a variing-delay skywave, whose polarisation has either been modified by [...] or by a horizontal current-component i
I use a Psion 3c organiser to control a Lowe HF250 RX via a 1200 baud serial link (no handshaking) for cave radio experiments. Unfortunately, the Psion produces strong RFI on some frequencies. This s
Presumably other ideas for antennas were also tried back then. Some years ago, with permission from the railway company concerned, some tests were done in Wansford Tunnel on the Nene Valley Railway.
Hi All Although wires lying on the ground and using the earth spiked in a mumber of places has been tried on the higher LF freqs 73 and 136 khz and found to be useless ??? see http://www.wireless.fr
Rugby at one time in its history running a few 10s of kW was reckoned to have 500000 Volts on its antenna. Sounds a bit high. According to Watt (VLF Radio Engineering, end of chapter 2), Rugby is vo
Helllo from Iowa, USA. I seem to recall an earlier thread about Cave Radio on this reflector. I made note of this URL: http://www.bcra.org.uk/sig/creg.html That page is on the main website of the Br
The insurance company did not even want to consider the claim( they were all on the same policy)." Act of God" was their excuse. I wonder what happens when insurance men appear at the Pearly Gates?
Hi José, Welcome to LF. Nevada is a retailer of amateur radio gear. The 'First' TX is made by Ropex, a Dutch company. I believe there is a review at http://www.wireless.org.uk/ropex.htm but I can't g
Ciao, Grazie per le informazione (? non ho usato questa lingua dopo 30 anni). [Thank you for the information] 73 John Rabson G3PAI Hello, serial Psion I do not know the PSION 3c organizer, I use the
Alan, May we have the reference please? 73 de John Rabson G3PAI I have also come across a small simple PCB by DJ8ES that has a Analogue Devices log converter ( AD8307..... 90dB range 500MHz BW !!) an
I'm going to the Saturday only. 73 de John Rabson G3PAI Dear LF Group, Just wondering - who from the LF group is planning to go to the Windsor convention this year, and is anyone planning to go to th
Given the Innate Perversity of the Universe, by the time you've done this, you will probably find the Solar Constant is. 73 de John Rabson G3PAI In an attempt to reduce the problems associated with m
2001 CREG Cornwall Field Meet Dates : Saturday 29th to Sunday 30th September 2001. Location : St Agnes, Cornwall. This meet has been postponed twice so far - with a fuel blockade and the dreaded Foot
André, Try http://www.rsgb.org/hfc2001/timetable.htm There are 3 LF sessions on the Saturday morning ( G3NYK, G3LDO, G3WKL). 73 de John Rabson G3PAI Just received the latest issue (September 2001) of
Have a look at http://www.nels.org/Source/documents/html/interfer.html Are the Ongar transmitters still running? I thought the main masts were felled in the 1960s. I remember the GPO telephoning me
If anyone wants to get started on LF and they contact me I will give them all the up to date info that they require and free of charge about anything LF to get started at minimum cost for equipment,
Friends, When you have time, do join us in our underground LF investigations. They are very much research, as Andy must have gathered in Cornwall. 73 de John Rabson G3PAI -- Original Message -- From:
Thinking about the local mains distribution, I wonder how easy it would be for an evildoer to go in for (non)wire tapping? John Rabson G3PAI Anybody want to volunteer to be a pilot site and say goodb
