I wonder why a very highly professional designers of the Decca system went to the expense and complexity of copper sheet screening of the interior of their complete buildings containing the antenna t
My QTH is afflicted by very high QRM level radiated from my overhead mains supply. It was very bad when I first started experimenting with LF and got progressively worse over the years, so much so th
Just had my first QRP 136 KHz QSO from Crawley with MB2HFC in Windsor, using my signal generator (50mW) for TX, two pieces of wire for the keyer and 2 metres receiver. Derek G3GRO operating theWindso
Heard QRSS on 135.7 at 1740 29.3 02. Reasonable signal strength, via Crawley vhf relay. Sounded like manually sent. Not really readable because of variable timing of dots, dashes, spacings and some b
Marek, Ja uzywam FT990 napendzania LF i do odbioru od cztertech lat. Do nadawania dziele 136MHz przez 100 (z bardzo latwa modification do FT990). Caly opis tego byl w G3LDO ksiazeczce. Podaj mi Twoj
I use 1.5Kw TX on136KHz. My nearest neighbours are only 10metres from my Marcconi "T" antenna and over last 3 years they had no interference on their MF nor VHF radios, television sets, terrestial an
Hi Tom, I started with a single wire 150 ft long, 50 ft high, with a 400W Tx., Antenna current was 2.4 A. I then added a second wire, spaced 220 centimetres, resulting current was 3.8 A. Wide spacing
Mal, I am glad to say that your comment regarding experience of frequent failures of FETs in the 1Kw Decca 5501 amplifiers in use on the LF bands (including 73Khz) is as ever, a load of codswollop! I
