Dear All, Some of you may have heard me making funny noises on 136. This has been a test of my PSK31 equipment. I can now produce about 200W or so of the stuff which is about 6dB down on my normal le
Jerry, Sounds a great project! I should build 136kHz transverter or cristall controlled transmitter (if sensitivity >of TRCVR is enough for 136). The main problem is PA... There are a few designs aro
Andy et al Is that 6dB down on mean power ? As PSK31 has a peak to mean ratio of exactly 3dB I suspect the extra power reduction is to get the transmitter into a suitable linear region. It's a differ
Rik and all, QRM is increasing significant below 136.5 here in Belgium and I believe it is even worse in Germany. Any chance to use 137.65 as PSK activity centre as Andy suggested some days ago? This
Rik and group What about a test on 137.65kHz at 2100 UT to 2115 or 2130 UT. Would be interesting if you could gradually decrease TX power during that period (let's say 3dB down every 5 minutes) ? I w
Rik and everyone, At 21 UT I was QRV on 137.650kHz but also heard (saw) nothing. At 21.10 I left the shack and when I returned at 21.30 I had some PSK signals from Dave on the screen. Most was 'rubis
Rik, QRN level was rather high last night, on a quite morning MM0ALM should be Q5 here. Can someone fill me in on the QTH and working conditions of Dave ? MM0ALM is in North East Scotland near the to
Hello all, A friend of mine moved to Jersey some time ago and has taken the odd listen for me on 136 but never been able to hear anything due to noise from the Loran transmitter at Lessay which he ca
Surely "all fools day" is on Thursday? This group intends to use a crossed field antenna which not only significantly reduces the visual intrusion of the transmitting aerial (approx. 25 to 30 metres
I don't know whether DJ5BV sees these messages but perhaps someone could QSP if not... My computer crashed towards the end of a QRS QSO today but I did get my "O" report OK and hope he got his! I sen
Dear all. This isn't the last word in sophistication but it does cheer-up the average HF tranceiver for 136kHz reception. Preamp/filter circuit at http://www.picks.force9.co.uk/circuits.htm#preamp On
Bother! What I meant was... http://www.picks.force9.co.uk/ngy.htm and when listening round I found I could here dozens of them. I'd be interested to know where they are! 73, Dave G3YXM.
Dear all, The 160m net tonight was poorly attended (1900z 1875kHz) and, as the year progresses the propagation will not be good at that time. Has anyone any suggestions as to an alternative net time
Geri etc. It could be true, Graham's aerial is higher than mine but his top loading comes down inverted V fashion which drastically lowers the average height. The RF power is about the same. By the c
Graham and co. What about something like Werner ON6ND was using (see picture in LF gallery www.wireless.org.uk/gallery/gallerlf.htm ). He has created a large diameter section at the top of his tower
Dear Wolf and all, No particular frequencies to avoid in most of G except 136.0 and just below. What callsign will you be using for the station? 73, Dave G3YXM best thanks to Ha-Jo, DJ1ZB who pointed
Dear all, Very sad news. I met Peter at Windsor last year and he was a great guy. His contribution to, and enthusiasm for LF was enourmous and will be very much missed. What can one say? 73 Peter....
Chaps.. I have tried sucking some RF off the mains by connecting the primary of a small transformer from the mains supply down to earth via a 22nF capacitor. The secondary was then used to feed into
Dear all. Myself and John G4GVC have just finished a portable session operating as G2BBC/P (my club callsign). QTH was Market Bosworth in West Leicestershire. We have to apologise for the massive QSB
