I believe only large and expensive installations on posh ocean liners. had rotary spark gaps. The trouble with a static gap is that the voltage necessary to strike a spark is more than the voltage re
Thanks for that. It certainly helps _me_. I have a 706/2/g but no 850. The front end of my 706 is so wide it recieves all the world at the same time ! but I am only one mile from a MW broadcast stati
Aha. Secrets will out. Mine was in 1944 a short time before D-Day with a good length inverted L although no-one told me that was about to happen.. I often wonder what the listening posts and crypto-a
Surely if antenna impedance is lo and amplifier higher then the antenna needs to be tapped down from the top and the amplifier final tapped "up" from there ? If moving the antenna tap detunes the the
suggestions : Just ease away on the halyard so vertical sags away from the tower. ..to decouple further. Lower the top of the coax to the ground and check for dc continuity from braid at bottom to br
Wild guess .Coax vertical conductor has parted under its own weight.?? substitute a temporary random wire instead of the whole antenna and thus prove your test and monitoring system is working. Bryan
This earlier exchange with the helpful Mike should help you. G0MRF has a website. bryan I used an MRF/YXM pre-amp (build from circuits on the web, or buy from G0MRF) with my IC706 with great success.
ongoing thought, If you use half the fixed coil and all of the varying coil in series [ F/2 - V ] you should come near to zero inductance with coils in opposition - certainly quite a low value. Cleve
706 Mk2 G. 4 trs. old seems to be in trouble with the power settings. 1.830 min is 10 w max is 50 3.760 min is 5w max is 60w 7060 min is 3w max is 70 14050 min is 4w max is 95 all above to a dummy lo
First thought It occurs to me you could use a chap ole' length of wire as a temporary antenna and cut bits off it until you achieved resonance with the minimum series setting of the variometer. That
Thanks for that, I'll check it out. Bryan -- Original Message -- From: <[email protected]> To: <[email protected]> Sent: 17 July 2006 08:40 Subject: Re: LF: Re: Re: Re: DFCW on TS450 20 do
Murray, Where can I get BASIC to run under windows please?. I have recourse to a 20 yr. old Amstrad PCW to solve problems, and it will blow up any day soon. Bryan G3GVB out
Many ships , both naval and commercial, have covert activities by people who code and decode a continuous wave with an archane on-off device. To divert investigators they refer to the key to their my
Info might be found in old books. Books were a crude system of recording data without use of magnetism. Invented about 1400 but long since redundant. No satellite communications!!!! We would have to
