I am trying to identify this device, which I believe was used as part of a cable-based system known as a Talking Rope, which was used by divers to communicate with the surface. I saw one of these sys
...........and according to Bill Gates we are still one hour ahead of GMT (GMT+1hour), I thought GMT is history, the correct is UTC (except on my QSL-cards) Perhaps Microsoft are still using C for s
Recently the economy 7 electric meter was changed from a black box to a grey box with green and red buttons. The former had a single button that could be used to select normal and off peak consumpti
[...] Normal CW QSO'S are getting rare these days. Most seem to favour the LAZY MANS mode 73 de G3KEV/IO94SH -- I didn't know they were using voice! 73 de G3PAI
Keep up the good work, Alan.. 73 G3 PAI Hi all, yes I suppose to do that would be really sticking my neck out. What I have done is to analyse the geomagnetic activity over the last 10 years and plot
Congratulations! 73 John Rabson G3PAI Dear LF group, Was very pleased to have a 2 - way 136kHz QSO with Joe, VO1NA early yesterday morning, 12th of June. It took place between about 0050 and 0400 usi
Then there was OG = 'old girl' but even 40 years ago that was used very rarely. About 35 years ago I had what we would now call an animated discussion with Sylvia Margolis (G3UML's mother) about the
Are you making a coax dipole for 136? 73 John Rabson G3PAI I wonder if anyone on the list knows where I can purchase 500m rolls/drums of either RG58 or RG59 from in the UK? I've just picked up a bran
Now, anybody got a spare 20 miles or so of old telephone pole-line in the middle of a desert?? No, but I do have access from time to time to several km of disused railway line (the rails are still t
I'm looking for 23cm portable gear for experiments in a disused railway tunnel. Is there any sort of microwave e-mailing list which I could usefully post to? Regards, John Rabson G3PAI Cave Radio and
About 30 years ago, Ongar Radio station to the north-east of London had a number of nine kilowatt HF ISB transmitters. For dummy loads they used carbon tubes about a foot long and an inch or two in d
From 1961 for some years the maximum permitted power was 10 watts into the PA. Currently, the band limits in the UK are 1.81 and 2 MHz. From 1.81-1.85 MHz the maximum permitted power is 400 Watts. Fr
Has Mal been using TUPperware insulators? From the The Times 4 November 2003. "Randy ram gets the secret world all overexcited By Simon de Bruxelles STAFF at the top secret GCHQ monitoring base were
Many thanks, everybody. Yes, compatibility with existing equipment is vital and the cheap versions of the connectors just don't seem to be reliable enough. If you drive 300 miles to do some experimen
Many thanks, everyone for comments and suggestions both direct and via the reflector. Yes, I did mean draw circuit diagrams. From time to time I receive hand-drawn diagrams which are perfectly legibl
May I have suggestions, please, on a suitable software package to capture circuit diagrams. At the moment I'm using CorelDRAW and very powerful it is but I am looking for something that will take me
Perhaps, if we can find a really thrifty means of transmitting speech (say 100 Hz occupied), that might rejuvenate the band. It is more than 50 years since single sideband came into the amateur servi
Does anyone know what is the primary legislation is (and secondary if any)? 73 John Rabson G3PAI Hi, those sending it will be prosecuted. I hope this is the end of spam buisness. Others probably have
It's when a bank of capacitors totalling a quarter of a Farad at 24 volts is connected with wrong polarity that things start to get spectacular. 73 John G3PAI Hi All Surprisingly, most high power amp
