HI Wolf, I extimated that an EH antenna for 136 kHz may have about 5 meters of diameter, if this giant tank irradiate RF in the space is another question. 73 de Claudio, IK2PII Thanks for the report
Hi Laurie. Very high noise floor at Hamfest in Novegro (Milano), I think about 20 dB more noise toward my home. Received your DFCW signal with T report with direct convertion receiver and suned loop
Just received M0BMU beacon with a minumum station! This is a good test for the receiving station to be exposed the next week-end in hamfest! I hope for some signal in the week-end for our show. A tun
IK2DED seen on 137.749 kHz, QRSS 3 sec, 15.40 UTC, 15 dB over noise, screen shot available on request. Unfortunatly I can't transmit and replay from my QTH in Milano. Wellcome on LF! Claudio
Dear Jim, since about 2 years I use a direct conversion receiver for 136 kHz. The schematic may be downloaded from my web page http://www.qsl.net/ik2pii . So I expose my humble opinion in the matter.
Hello! In band today was the following station: IK5ZPV cw 136.5 Valerio IK2PII 137.7 Claudio IK4JSJ 137.7 Florio I had a nice QSO in QRSS with IK4JSJ, about 250 km. It was transmitting with only 3 wa
Hallo lowfers. Mal, The frequency stability of any selective level meter with a VFO for a local oscillator makes them suspect for staying tuned within a fraction of a Hz for long periods. The digital
I have tested some 600 ohm modem transformers, they works well also for LF. The insertion loss at 300 kHz is between 1 and 3 dB. Inside PCMCIA cards modem for lap top you can find very small transfor
HI LF group. My new transmitter is up. About 500W power. I should be on the air this evening and to morrow morning. 137.710 kHz and QRS 3 sec mode 73 de Claudio, IK2PII -- == Claudio Pozzi - Happy Li
On 30-Oct-02 g3ldo wrote: I had a similar experience to Mike this afternoon. While running the 72kHz transmission I noticed that the support insulator support cord near the loading coil had parted an
Tonight I'm going to deliver my talk on LF for the 10th time. It will be at a VERON radio club at a town called Schagen (NE of Amsterdam). I always tell my audience that the best chance to hear norma
SNIP It is necessary to generate local activity so that new listeners have something strong to hear, and DX activity so that experienced operators have something interesting to work. It is also impo
HI all. At 16:47 26/03/2003 -0500, you wrote: tonight the band seems to be plagued by a high level of background QRN. Not the usual distinct static crashes, but rather a continous static crackling re
HI all. In my web site now you can download "The radio frequency designer's tool". It is a Microsoft Excel (and Open Office 1.0 - of course -) spreadsheet for RF circuit design. You can compute induc
I had a nice QRSS contact with RN6BN last night, with "O" reports both ways, and 'BN was a clearly audible S3 signal at my location. Several others stations were also active, including IK2PII who I d
HI Sam and others. You are 20 dB over noise here in JN45PU, north Italy near Milano. 30 sec. dots. Also received G3AQC 120 sec. dots 25 dB over noise. Received with my direct conversion receiver and
