Heard G3KEV today (Monday) at 2133z with 'armchair copy'. I tried to reply on the given QSX fq on 80 but there was heavy QRM so maybe my signals didn't come through. Also heard G4GVC at 19.55 with go
Have put a small summary of my VLF activities on the following link: http://home5.swipnet.se/~w-54761/vlf.htm I'm currently working on a more powerful PA. Hopefully QRV within a week or so. /Christer
Wouldn't this new transistor be suitable for a LF PA? The new 'CoolMos' technology from Siemens that brings much lower RDSon for high voltage types. http://www.infineon.com/products/36/36.htm /Christ
I would like to hear if anyone have tested the Multiple Tuned Vertical in some form. I have understood that the antenna transforms the feed impedance with a factor equal to the square of the number o
Thanks for the interest in this issue. Steve Olney wrote: We tend to concentrate on radiation resistance alone, when it is the ratio of radiation resistance to losses which determines how much goes i
On Mon, 23 Aug 1999 12:00:31 GMT, [email protected] (Tom W8JI) wrote: In the latest installations and rebuilds, VLF stations have removed multiple downlead systems and improved efficiency. I'm sur
(from rec.amateur.radio.antenna) I agree with Mr Dagaas's reason for efficiency of the 6-mast system being 6 times that of an individual mast. I would like to describe the operation in a little more
Some pictures of my latest antenna project can be found here: http://home5.swipnet.se/~w-54761/vlf.htm#antenna 25 m vertical with 6 toploading wires, 15 m each. 800 uH loading coil at the top. The an
I found some information on propagation characteristics for NDB antennas with different kinds of top loading at: http://www.plains.demon.co.uk/navaids/ndb_ant.htm 73 Christer
I just worked SM4DHN, Lars-Bertil in Hagfors, on 136.5. Lars-Bertil uses a 400W PA and a T-antenna. My new 26,5 m vertical seems to work fine. Reception improved by 10-15 dB compared to a 240 m longw
Hello Urban. Heard You with 579 in JO69UO, 135 km distance. Understood there was something wrong with your rx. 73 Christer, sm6pxj --Ursprungligt meddelande-- Från: urban.ekholm <urban.ekholm@h
I will be on 136.8 at 20.30-21.00z mon-fri this week. Also in the morning at 04.00-04.30z. Suggestions for other (better) frequencies are welcomed. 73, Christer
Hello, (I don't know if this reflector is working, I sent a mail this morning but it hasn't appeard yet. Here we go again:) Tomorrow, Sunday morning, I will be QRV on 136.35 at 04.00z. QSY to 137.0 a
The weekely news bulletin from SSA, The Swedish Radio Amateur Soceity, tells that on Jan 1st 2000 the radio station SAQ in Grimeton will be active on 17,2 kHz. Time: 13-1400 (probably local time). Fu
The 15 m band certainly is not very suitable for crossband QSO's within a couple of hundred kilometers. 73, Dick, PA0SE I did answer DL3FDO on the given fq on 15 m but obviously I couldn't make mysel