The owner is getting married on the 28th Sept (Z time) in the house and doesnt want the 81dBa fan noise/HP transformer hum to obscure the "I do" bit. Laurence, Sounds like congratulations are in orde
Hi Gary, I don't have the experience of some of the other operators on this reflector, but I did face a similar problem last year - i.e. how to test and set up my TX with next to no test equipment. I
Hi Group While pondering a filter design and playing with a pot core type inductor... RM6 / RM10 etc. I wondered: "Why is it called a pot core - it doesn't look much like a pot ?" Anyone know how the
Alan, et Group, The Services Textbook of Radio (1958) Volume 5, (page 336) says that "a Beverage, or wave aerial, is a straight wire several wavelengths long, usually carried by insulators on telepho
Good idea Urban, But do be careful that the glass doesn't break while prising the plastic base apart. You could get a bad cut, if holding the glass in one hand and the screwdriver in the other. Also
Hi Gary, Jim beat me to it, I was going to suggest using the Vishay film resistors. Photo attached of a dummy load I made using two 100 ohm RCH50 resistors in parallel. I think I got them from Farnel
Hello Marek, group, BTW is THIS frequency causing "only" a scalding or an electric shock or both? HF stays on the body surface, might burn the skin, but what about 137kHz? I am simply curious... Funn
Hi John, I would suggest Circad by Holophase. http://www.holophase.com/ It does both schematic capture, and PCB layout. This is a professional package, but the downloadable demo appears to be in use
Hi Group, Re: Farnell It obviously varies from country to country because anybody with a credit card can order from Farnell in this country, although there is a £10 minimum order charge for credit ca
Hello Jim, Dick, Peter, LF Group Jim, M0BMU said ... I am currently running 1200W at 136kHz into about 50m of wire antenna in a residential area and, like the others, I do not experience significant
Bryan, I have knowledge only of the Christian Bible, and it maybe that others of different faith would want to give you a different answer. In answer to your question "Is God a secret ham", I would d
Hi Alberto, What an interesting experiment ! Do we have any idea about the internal workings of the "inexpensive", Conrad clock ? I was wondering if it contained some logic circuits, or even a microc
Hi All, The posting with the subject "Re: Your software", purporting to come from 'XYM looks a bit dodgy to me. There is no text in the E-mail and it contains a .pif attachment, which I think is some
Hi Alberto, The new web site loaded much faster than the QSL.net one. 73 Hugh M0WYE Could you please all of you do me a favour ? As you may know, my Web site http://www.weaksignals.com is physically
Hi Alberto and group, At this point of the discussion we need a theologian to put us on the right tracks.... Sorry, the theologian was enjoying his breakfast in a remoter part of the Netherlands and
Good morning all, I keyed my original LF TX with a relay - crude, but it got me on the air. I know many designs just filter the keying waveform to "round off the corners" of the envelope. But I read
Low Energy Light Bulbs Hi All, All the electronic ones have some kind of oscillator in them. There is no screening, and there is little space for filter components, so the fact is most of them radiat
38-2670 Ferrite rod 20mm diam by 150mm long, this is really a "bulked up" aerial rod !! I dont know what they are for but there are 6 slots along the length...could it be to reduce eddy currents ?? I
Hi Ewe Charged, Always store lead-acid batteries fully charged. Maybe even give them a top-up charge every few months. 73 Hugh M0WYE Hi all, I have several 24V sealed lead accus needed for lawn mower
My first encounter with a soldering iron (aged about 12, I guess) was when someone said "Here, hold this a minute", and I grabbed it by the metal barrel bit, beause my friend was still holding the ha
