<< ERP will be calculated on the basis of estimated radiation resistance and measured antenna current for each antenna. For the inv. L this should be about 20 milliohms and 2A, for the main mast abou
<< My point however is that the "small ant" at Puckeridge can only be described as a vertical with top loading,and that it will radiate as such and in no other way. >> How can it _not_ radiate some o
Indeed there has been. Some of it has gotten rather silly and occasionally a bit abusive, in fact. I'm glad to see the discussion has been more civilized here, although there are still evident tende
Rik posted while I was still struggling to finish typing mine. If he had been a bit faster or I had been a bit slower, I could have addressed some part of the bandwidth issue. <g> The necessary bandw
The links on the LWCA "LF Ham and Digital" page (lwca.org/sitepage/lfham/lfham.htm), although not always as current as I'd like to maintain them, are a good place to start. There are two links in par
Hi Bob, Bessel filters do have wonderful group delay characteristics, and a bandpass version is entirely mathematically realisable...but not especially useful. The skirts of such a filter are so gent
Bill VE2IQ announced his new time-crunching software Thursday for recording QRS transmissions via the sigma-delta converter and playing them back at an accelerated rate through a regular PC sound car
Daniel F1TAY a *crit : Quel est l'adresse du sit web de la station musée SAQ (Grimeton Suéde) car apparemment le site serait inactif ? Le but est d'avoir la fréquence exacte et les >heures de la tran
I am trying to work out how to use a bandwidth of -10Hz, before he removes it from the menu! Actually, I suspect it would take a bandwidth closer to -30Hz to achieve that much output. But I'm having
Walter is quite right, of course, that amateurs are not bound by the 24hr - 365 days/year service requirements imposed upon professional LF systems engineers. However, the examples he cites abundantl
<< I am surprised that anyone had problems with Netscape. >> I'm not. As a webmaster who tries to keep our pages as widely readable as possible, I've been trying to write them in strict accord with H
<< Curiously an earth at the shack end has the opposite effect - so not all earths are the same! >> Good observation. You may want to see an article in the LWCA File Libraries section; specifically,
If one is serious enough about civilized PSK sidebands to consider linear amplification-- which is no trivial matter at the "California kilowatt" levels being discussed here lately-- why not simply t
<< We would of course need much finer steps than 100Hz. >> It would help on this side of the pond, too, now that you mention it. The power line controller signals we have to contend with here tend to
<< Following up on myself that (the curie point) does not apply to air cored coils of course. I only read the original message after sending this comment. >> Thanks for the clarification, Nick. I fou
<< I can remember in the early days of TV here in the states that we would occasionally see such things -- when they were not synched. Now you just see a stable ghost of the 'interfering' station in
Fascinating explanation, Paul. I still have a Sony PCM adapter for recording on videotape, and had never made the connection with that particular sampling rate. 73, John
