Here you can find articles I’ve cached, that are no more available in the net or are very rare to be found. Where possible credit will be given to authors.
For someone surrounded by houses, power lines and trees, a 30m/98ft high tower is desirable. A high tower is also desirable for someone situated on perfectly reflecting ground, such as saltwater. However, in most “real world” cases, the 30m/90ft height is less advantageous than you might think. Why is this the case? The angle of
Receiving HF signals at my location is a compromise situation due to the antennas I use and the high noise environment in the city. Although my transceiver has good selectivity and excellent filters, I suffer from high noise conditions that at times make receiving a chore. This is true for both weak-signal DX as well
How To Make A High Power 4:1 Balun Info I built a homebrew 75 meter Double Extended Zepp Antenna,And I needed a 4:1 Balun , so I decided to Homebrew the Balun also.Here is how I did it! I used a 5 inch long piece of PVC Plastic pipe about 5/8 ID and about 7/8
I began dxing in 1986 with my old MARC II shortwave receiver. I used to wonder what it would be like to dx from distant points all over the world and country. I never would have imagined someday I would be using remote controlled receivers worldwide. We can use Icom PCR 1000’s, AOR_AR 5000’s, Kenwoods,
A long list of DX Cluster telnet links
How to setup a long wire antenna
Schematics for ICOM KENWOOD and YAESU Radio to PC Interfaces
GAP Titan DX maintenance and SWR fixes.
One of the most useful antennas in the repertoire is the Marconi or quarter wave grounded vertical antenna. Its invention made it possible to halve the length of antennas, simplifying communications, especially at HF and below.
designing for MF and LF communications When radio began, it started with low frequency communications, which it was thought was the answer to long distance communications. Since then we have seen the development of sky wave communications on HF frequencies, followed by the proliferation of communications system using the VHF and UHF direct wave and