The EVM56002 is obsolete anyway, they are like gold dust now !! Motorola do an updated one with the 56300 (??) but it is very expensive and will need EVM software to be modified. Is 16 bits essential
Downloaded ARGO, installed and tested 100% OK. Decodes my 10Hz wide SMT Hell beacon signal on the " 10s " dot setting. A few more settings would be useful how about binary increments of dot length fr
How about letting it go slow enough for a 30s dot or a resolution bandwidth of 0.01Hz - as far as I know the only soundcard software that could get anywhere near this and do proper SLOWCW was Spectra
Yes, it was me for about an hour. Just another soak test as I've finally put IRF452 devices into the PA to give that extra bit of reliability now. As the garden has dried out the antenna tuning has c
I don't know about the mic input, I woulf have thought an ALC action on this input was rather dependant on the particular machine / soundcard in use, but it certainly does not apply to the line input
Well ............. Just installed a version of the Decca guard circuit on the 600W PA, and its performance is seriously impressive ! Still using the cheap and nasty IRF840 FETs with just a minimum of
I have now done a quick fix on SLOWCW to use LPT1 for keying rather than a COM port. Anyone wanting this facility please contact me directly at this EMail address for a copy. Andy G4JNT
I wrote the origianl SLOWCW prog, but all versions of that now use the serial port. However, if you want a version for the parallel port I'll modify the software now and let you have it in a short wh
About 600 Watts, and judging by the (cold) heatsink temp with a small fan could be be tempted to try increasing power to destruction - under controlled conditions of course ! This PA does not lend it
About 95% correct I reckon Jim, I think the overlap betwen turn off and on is a function of the FET itself, and turn off will always be faster that turn on even for an infinietly steep drive waveform
Hope the attached .JPG image is passed over this reflector, especially after the recent comment about file sizes, but at only 10k size, we can hope ...... This waterfall plot is a recording of VE1ZZ'
Jim's frequency is 135923.99 Hz and has remained absolutely stable to within the 0.01Hz readout resolution since measurement started at 1945z. Occasionally I read it as ~.98 so the actual freq may be
A bit belated, based on what is coming though now, but here is a section of Last night's (Friday / Saturday) recording in file VA3LK04D.GIF attached showing the time from just after 0600z to 0850z in
Excellent copy of Larry's signal throughout the night. I woke up at 0600z and the screen was showing a complete 'CW' message. Hit the save function and went back to bed. When the signal has faded eno
Quite the opposite at the moment. I've seen absolutely nothing of you so far and am generating a bigger and bigger file of narrowband Gaussian noise. Even the other lines are not as visible Andy G4JN
From G3LDO From this it would appear that vector potential is a mathematical device to simplify electromagnetic calculations rather than an entity generated by the loading coil itself. Exactly ! Only
No need to move for now, I'll keep with the 3.9Hz sampling and post process. Must sort out that sprog problem at the lowest rate. Can't look at the plot at the moment, its on the other machine which
Larry - I'm definitely getting you now at CF - 0.60 Hz. Only managed to positively identify you at 2300z - my double-decimation software for the EVM generates a spurious line right where you were at
Going to 0.5Hz wide now 1740z Andy Andy.. Can you please go more narrow, have a good copy 869.5 / 871.5Hz hope to have a full call before i leave for work tomorrow :-) 73 de Ko, NL9222
