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Joined: Sat, Apr 4th 1998, 00:00 Roles: N/A Moderates: N/A

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Topic Author Posted On
Cable loss higher than expected ON4DD on 26/5/19
Moisture under the jacket will cause corrosion of the copper shield surface, increasing losses exponentially at higher frequencies. One cure is to utilize a cable with flooding compound around the braided shield. Another is to select a cable with a solid outer conductor, either 'hardline' or layers of foil along with the braid, such as RG6/QS used by cable TV companies at frequencies at or above 1 GHz .
what digital mode on 3.575 late WA9WCN on 26/5/19
FT8 -- See the thread two lines down with subject "ID digital modes"
Garbled Audio, SSB tmosca on 26/5/19
... as are all amateur operations below 9 MHz, EXCEPT the five 5 MHz channels which are shared with the U S Govt, and are li mited to USB..
Interstation interference W4EEC on 28/4/19
You might also look at the large Multi-Multi contest stations across the country who operate their equipment with the same RF environment two or more weekends a month. Good filter designs and careful grounding practices can get you there.
Insurance to operate in State Parks K3MRI on 28/4/19
You pose a good question as folks are preparing for their Field Day activities. Each state sets their own rules that apply to persons using state property. Obviously they don't want to be sued if anyone, such as a group of amateur radio operators, creates a hazard that results in an injury or death. Same idea goes for towns, cities, counties, park districts, or other entities. I'm not aware of any state that categorically exempts amateur radio from an insurance requirement that they apply to other persons or groups using state property orrecreational facilities.

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