I want to write some software to control my AD9850 DDS source (may be applicable to your 9832 source as well Dave) and might as well include this option. Andy G4JNT Hello Andy, DFCW is still a very
Hello Mike, In theory there is no need for these 'gaps', but a series of tests (mainly conducted by DF8ZR, DF6NM and me) showed that these small 'gaps' had 2 advantages : 1. It eases the reading of c
In addition to Tom's suggestion : In order to check the 'power behaviour' of a bunch of unknown toroids I took my old 136kHz TX (40W output), made a series circuit of a 1.5nF silver mica cap (actuall
Spectrogram is limited to 0.7Hz resolution (16k bins at 11k sample rate), so it had little advantage to have dot longer than 3 seconds. I'm sure that Spectran will make 10 sec. dot (and even longer)
Regarding non-amateur CW cignals heard on LF, this morning at about 1015utc, on 18.20kHz I was suprised to hear VVV VVV VVV VTX3 several times, interspersed with figures and letter groups, all in pla
I tested the lastest version (built 262) last night on Marco's (IK1ODO) signal. Results are amazing, while I had poor copy with Spectogram I could get a perfect 'O' signal with Spectran. It just took
One more prove that a horizontal antenna at very low height really works ! .... .. Rik ON7YD At 13:35 16/05/00 +0100, G3XDV wrote: F6JSZ wrote: The amplifier is nearly finished and I have to repair t
Hello Marco & group, I'm sorry but it was absolute impossible to look for the 2mW signal last night. I started looking at 19.30UT (as nomally Marco's signal becomes vissible here after 20UT), but at
'3C5' is a 'Philips-like' code for ferrite material, but I cannot find it anywhere in my lists. Larry (and others) : I have information on Philips ferrite materials (specifications, material grades,
On 17/05/00 G3KEV wrote: To my knowledge no one in the past has disputed that a large and small vertical would have the same radiation PATTERN. What has been said is that the intensity of the signal
I could copy Marco's 2mW beacon, a lot of QSB and QRN made it difficult at times (DCF39 had also a lot of QSB and was -10 to -15dB on normal most of the evening. On a quiet winter night it should be
For what it is worth : I use a Kenwood TS440 on LF, sensitivity is OK and if the internal 20dB attenuator is used the IM behaviour is very good (using my 'big' antenna for reception). 73, Rik ON7YD A
The recent tests with the 'big' decca antenna and the 'small' inverted-L were were interesting (BTW : I can confirm that the signal on the small antenna was stronger). The tests raised an old questio
You certainly FOOLED us all but you are not the only one that cannot copy cw on LF Everybody is entitled to have his own opinion about antennas, transmission modes etc ... Even when one does not agre
The Swedish thesis shows that around 500Hz the ear/brain is at its best in copying wek signals in noise. 73, Dick, PA0SE For many years I was used to a 800Hz tone for CW (just happened to be the 'sid
Hello Dave and the others, I think that the discussion about antennas with a significant horizontal part is not 'if' they work (they do work, signals of OH1TN, DJ9IE etc. prove so), but 'why' or 'how
Hello Kevin, I took part in some PSK31 tests (receiving only) with G3YXM and I was not very impressed by PSK31. At levels were it gave a more or less usable copy the signal was strong enough to be co
