At 07:16 12/04/00 +0000, you wrote: All at G3WSC/P. Nice signal yesterday early evening. Very strong but you had key clicks on the LF side of the signal on 136 khz covering a total of 250 hz. I expec
It certainly is. 100W versus 40kW is 'only' 26dB (even if the 'decca guys' only get 10W ERP it is an acceptable 36dB). But the fact that they are far more west compared to DCF39 may nibble of some dB
There seems to be a serious difference in propagation between the VE-UK and VE-central Europe. CHF was often reported in the UK with signals up to 10dB better than I could copy it and if I remind wel
Hallo Geri, Dein Vergleich von 'normal CW' mit QRSS ist sehr interessant. Ich bin im Moment dabei den Teil meiner Webpage über 'extreme narrowband modes' zu schreiben und würde gerne deine Befindunge
I copied this from 2 recent messages sent to the reflector by the same OM. Seems that some peoples opinions regarding commercial antennas can change rapidly. 73, Rik ON7YD date : 5 april 2000 subject
Now there's an idea! If just the clicks were sent the peak power could be enormous while still remaining at 1w ERP average! Mike Hello Mike, You would have an enormous peak power, but unfortunately a
I just uploaded the 'extreme narrowband modes' page on my website : http://www.qsl.net/on7yd/136narro.htm I tried to find a compromise between keeping things understandable (minimal math) and being c
I hope somebody else checked the signal. I will let it running until tomorrow (tuesday) morning. 73 - Marco IK1ODO Hi Marco, I checked for the beacon on friday and saturday nigh. I could see some tra
Hello Marco, To take advantage of the 40 second dots I used Spectran. Settings were slowest possible 'screenspeed' and 0.064Hz bandwidth. I left the other setting as default. 73, Rik Hi Marco, I chec
From august 99 to today I measured the enviromental loss resistance of my antenna. The measurments were done by measuring the TX output power and the antennacurrent. The known coil losses were subtra
If using milli-Hz resolution don't foxus only on TX stability but also on RX stability ! An example : last weekend I installed Spectran in order to monitor Marco's signal. Monday evening QRN was far
I think that Andy's (G4JNT) approach to go to milli-Hz bandwidth will be very usefull in exploring the limits of what we can do with our small antennas and 1 Watt ERP limit. It may also give us some
Friday (28 april) arround 22UT I had a good copy of Marco's 10mW signal, both with Spectran and Spectogram. Some screenshots can be found at my webpage : http://www.qsl.net/on7yd/IK1ODO/ik1odo.htm Al
Hello Marco, I will see what I can do to adapt QRS, I will have to use the parallel port for power switching as all 'output pins' off the serial port are alrteady in use. Alternative I could try to p
The feedback from the amp-meter to the TX is NEGATIVE (if the antennacurrent increases the TX output power is forced to decrease). In combination with a reflected power protection (as used by G3YXM i
It was the first idea that crossed my mind too, but when I did some basic calculations on it based on the figure from Marco (up to 5dB flucuations in antennacurrent) you must be willing to 'heat' up
Everybody who is involved in extreme narrowband mode such as QRSS and DFCW will confirm that signals that are 10 to 20dB below the 'normal CW' detectable level can still be copied and lead to a QSO.
The 'rules' (as they were learned to me when I was an eng. student, back in the late 70's) were : - no space between the figure and unit when the unit is abbrevated (so 136.5kHz) - abbrevated units i
At 17:03 8/05/00 +0000, G3KEV wrote: Tell me Rik, why is there no qrss(LMCW) when the band is noisy like lots of qrn/static about. It should not be a problem if you can read signals 20 db below the n
Some weeks ago someone (G3YXM ?) reported hearing CW arround 80kHz. Last night (+/- 22UT) I could heard just the end of a CW message followed by a carrier (gave listening to that after abt. 10 minute
