Hi All, I've heard Reino OH1TN a couple of times this year, and last night (Wednesday) he was audible again. Reino was on 136.8 kHz, running 150 watts to his 500 m inverted L antenna. I replied to Re
Nice weekend again. A lot of QRN on friday and saturday. I worked only few local stations (OM5CW, OK1DTN and HA6PC) . . . . Many thanks for the news from Slovakia. As already mentioned by Jim M0BMU,
Hi All, I was pleased to hear so much activity on 136 kHz over this past Easter weekend. Family get-togethers and jobs around the house meant that I did more occasional listening than operating, but
Hi Group, I was taken off work during 4 months. I come bake with a new antenna , I have upgraded my courant of 50%. This morning I transmitted on 137.6 in QRSS mode (dot = 3) during 20 mns, but nothi
Last Sunday night I worked G8TB in Purley for the first time. If you are new to the band Bernard welcome. If not new still welcome but I should be more observant! 73s all . Laurie. As Laurie had gues
Very many thanks to Mike for his report of the LF Forum proceedings. A few personal comments follow. Several suggestions were made as to how to encourage newcomers onto 136kHz. It was felt that once
/... * Run a contest, or series of cumulative contests .../ /...raise these issues with the RSGB HF Contests Committee.../ Please, don't. I agree. Please, don't. But, as a Group, we could probably do
Is anyone who is going, prepared to e-mail me a short report when they get home on Sunday evening? Perhaps any such report could be posted to this Reflector too? Regards to all, Steve GW4ALG
Paul W1VLF wrote: Every now and then it seems neccessary to find several references on a topic and approach it from a number of "different angles" I agree. When Nick and Mike recently asked about the
Aluminium kitchen foil is much thinner than the skin depth at these frequencies, so you are getting nowhere near the full screening effect. Many thanks for another clear description of what's actual
Hi All, Well, it's been drier in Chepstow this week, and we're having a gloriously sunny day today. So I've been doing some more antenna current measurements this afternoon. (If you're getting bored
I also suggest that the different current measured at each end of a loading coil, as mentioned in an earlier posting, could quite easily be due to the slight mistuning when the extra hardware associ
John KD4IDY wrote: I don't recall whether you ever mentioned what the length is of your coil. Is it an appreciable fraction of the overall antenna height? Hi John. The length of the loading coil is 8
Hi All, Many thanks for the advice regarding my 'missing' milliamps, both direct and via the Reflector. Naturally, after getting so many good ideas, I had no choice but to take advantage of the good
Hi All, Today, I made some more antenna current measurements on my 12 m vertical (and my shiny new loading coil), using a thermocouple meter. At resonance, the current into the base of the loading co
from GW4ALG> I'm very grateful to Bob ZL2CA for his important observations and comments. Firstly, a couple of points of clarification: 1) My loop is orientated in the vertical plane. It is a delta-lo
8V p-p in 50 ohms is 0.16W, not 60mW So you have 34dB coupling - you were right to expect more than 40dB ! That's more like it! (I think my conversion to rms went wrong.) I'll use the formula below
Hi All, from GW4ALG. . . . when monitoring the TX SWR into the resonant vertical . . ., I found no change in SWR when: - tuning the loop antenna either side of resonance (with the coax-side of the tu
I am curious about the grounding systems people are using. Is anyone using multiple ground rods bonded together? Is anyone using a well that is drilled into the water table? Has anyone used sheets of
Dave G3YXM wrote: Pascal, I would recommend building a TX with at least 200W output to begin with. Once you have made a few contacts you can improve the antenna etc. and then try QRP. I think you wil
