G3YMC wrote: The packet cluster reports given by Mike G3XDV are, I think, from the internet based version of the packet cluster. This is totally seperate from the VHF packet cluster network in the UK
Ah, that's very useful. I heard it at S9+10dB last weekend at 0230UTC - this is the strongest heard so far and is as good as the Greek RTTY signal ever gets. What would be really useful is someone w
Tuesday - Friday 26 - 28 May Skeds with IK1ODO using QRSs. Very bad storms in Italy and some nights also bad in UK. Saw Marco on Wed and Fri, but no QSO. Saturday Saturday 29 May Bad QRN all day. Hea
Saturday 6 June Low local noise and static. Heard G3YXM (599); G3BDQ (58/99); G6RO (539). Worked GW4ALG (559/569). Sunday 7 June Mostly very low local noise all day Sked with IK1ODO using QRSs but no
A good weekend (at least the mornings). A new country heard and four new stations received. Saturday 12 June Very low noise level in morning then S9+10dB QRM from neighbour's computer 1100 - 2130. Go
OK1FIG wrote: We are probably damned to fight agains QRN and QRM. Recently I had opportunity to buy an external DSP device. I wonder what the experience of DSP users are. Certainly it is great to hav
Lets resume the discussion about a talk back frequency and a special operation time as df2py suggested. I am not sure if there was an agreement. I have been puzzled by the call for special operating
To all blacksheep.org mailing list members There will be some disruption over this weekend as we're working to migrate the blacksheep.org services onto new servers - should be all done by Sunday even
Saturday 19 June Very bad local QRM, mostly S9 white noise all over band. Heard G4GVC (599); G3YXM (599) and G3OLB (589). Saw on Spectrogram (which was less affected by the noise) QRSs signals from O
I have done very many antenna experiments over the past 2-3 years to get a better signal at 73 and 136kHz from a small garden. I have experimented with inverted-L Marconis. These have mainly sloped d
I downloaded Spectrogram 5 yesterday and have done a few experiments with it. It seems that the best improvement is the custom colours on the display. This is not just the look of the thing - it is w
Thanks to all who have given me advice on inverted-L top sections, and to Dick, PA0SE, who pointed me in the direction of the Admiralty Handbook (Dick, if you have not yet sent the copy, do not bothe
Further to my note on Radiation Resistance formulas, the highly respected 160m expert ON4UN uses 1450 instead of "160 (or 60) multiplied by pi squared" in his excellent book Low Band DXing. This figu
Pure mathematical the radiation resistance of a short (in wavelength) vertical monopole above a perfect ground is : Ra = 40 . Pi^2 . l^2 / L^2 where Pi = 3.1415... , l = antenna-length , L = waveleng
Since the radio was so noisy this weekend, I spent time both improving the transmitted power and getting a better idea of the real antenna current. I finally managed to get 1.7A into my inverted-L fr
Another extremely noisy weekend so spent the time usefully improving my signal. Saturday 26 June Local noise S9 all day. Heard G4GVC (599). Very bad QRN added to the QRM by lunch time so gave up. Imp
Alan Melia wrote: I have been grappling with the idea that I need to know how good (or how bad!) my antenna is on reception. After several months of listening and slight changes I know it isn't good
G3NYK wrote: To Mike yes I do use the steady signals of the 'beacons' for tests, but what does S9 mean?? Its a strong signal but is it 10uV/m or 1V/m. Most of the radios I have have S-meter sensitivi
Rather heavy going this week with high static levels but managed some QSOs. Tuesday 29 June First time QSO with PA0CC (gave 559; got 439). Wednesday 30 June QSO with G3AQC (gave 589; got 559 - 2 S-po
Having been initially enthusiastic about the latest version of Spectrogram, I have tried it on several real signals (only tested it on weak carriers before) and I have now gone back to the previous v
