So I guess a TX power no greater than 4W would be sufficient to meet the 1W ERP limit? A super efficient, optimally tuned Class-E single-FET amplifier capable of the necessary power would indeed fit
As an aside, and again not really applicable to LF/MF, there are other "soundcard data modes" that give similar "below the noise" performance. Olivia is one such mode, and I have successfully had QSO
While you wait for Mark's answer to YOUR question, perhaps you could answer the many previous requests for information of your own 500kHz transmitter and your station's ERP? No..? Thought not
Scott, it's even worse than that! Mal isn't often to be observed moving his transmit frequency to match the other station, so his QSOs usually take up double the bandwidth than is needed, and on top
Wow! You mean that in Canada a "real radio amateur" isn't required, by law, to spend all his spare time chasing DXCC, with a straight key and a homebrew transmitter? How enlightened your laws are, I
Hello Gary, LF, For a nice view of selective fading on 500kHz my grabber is currently showing the effect, and generally does at night, now that the Faroe AMBC station on 531kHz is radiating wideband
A (very)small sample of the gear I look after, day to day. http://www.sighthound.demon.co.uk/bressaymux1.jpg http://www.sighthound.demon.co.uk/bressayrbstest.jpg http://www.sighthound.demon.co.uk/bre
Hello LF, G0NBD has been received at up to -5dB here, on 503.637, yet no sign of a spot from anyone else on WSPRNET. I wonder if it's because we're all on different dial frequencies? Due to Gary usin
Hello LF, I find it strange that the number of grabbers active should be used as a measure of the conditions and activity levels of the LF bands. Surely died in the wool "real radio amateurs" - who e
Andy, Jim et al, Just retuned to 502kHz to see if I can copy any WSPR from you Andy, Also the grabber at http://www.sighthound.demon.co.uk/gm4slv/gm4slv_136800.jpg now will show the band 502.3 - 504
Hello Mike, LF This is precisely why I thought it might be instructive to report TX power! In the above example, of an inefficient antenna and 800W vs an efficient antenna and 100W for the same ERP,
Hello Jay, LF, I've just retuned, to 507kHz dial, at 20:00 - I'm hoping to catch the first of your tranmsit periods and will continue through the night. RX setup is identical to the last test, same a
Andy, LF, I have had no problems with the serial port PTT control of WSPR. With a normal 9-pin RS232 port, on the motherboard of the PC, I use the RTS line for PTT switching, via a simple transistor
1st decode was +1dB s/n 2nd dropped to -15dB That's QSB for you! Cheers, John p.s. Is there any chance of adding a more accurate (ie 6-figure) locator to the database? I think the WSPRnet database st
You're welcome Markus! It's great to see and hear you at this distance. The 23:30 transmission decoded at -15dB I see Jim also is on the band now, at -12dB 137.500kHz Cheers, John On Thu, 15 Jan 2009
