Amateur Radio made in Italy
Please feel free to build or distribute the information on these antennas. G4DHF retain the copyright to the designs and ask that they are not manufactured for commercial gain. Introduction This is a design for a 5 element 2 Metre beam with a forward gain of 8dBD and a front to back ratio of over…
Icom IC 706 user review
Dimensions of the 3 element Yagi antenna for 7 MHz 15m 7050KHz 20.59m 21.80m 19.18m 20m 7050KHz 20.68m 22.15m 19.38m 25m 7050KHz 20.82m 22.70m 19.49m 30m 7050KHz 20.85m 22.80m 19.60m
A document I’ve cached about a delta loop antenna for the top band. Of course, as you can immagine, it requires a lot of free space….
The W3DZZ antenna revisited. A multiband antenna 80 to 10 meters by using traps for 7 MHz
Starting with a new ham radio toy in my shack. The Rasperry PI
Construction: I made and put this antenna up the Friday afternoon before the ARRL RTTY Roundup (1999)! It took me about 3 hours to make and install on the tower. Most of that time seem to be used untangling the wire..hi hi I made the antenna 142 feet long. Use tiewraps at each of the…
1. Introduction Sooner or later every Shortwave Listener will hear them, the Number Stations: rarely letter-groups are read by a synthezised male or female voice, are keyed in Morse code or are sent in digital mode. All transmissions start with an identifier/call, usually a 3-figure group, repeated several times. The following figure-groups specify the decryption…
Recommended Repeater Operating Procedures Use simplex wherever possible freeing the repeater for necessary uses. Monitor the repeater (listen) or determine if the repeater is in use, and if there are any peculiarities in its operation. After listening for a few seconds, identify, un key and listen to see if it was quiet for a reason,…