On 7/31/2011 9:49 PM, Padraigh ProAmerica wrote:
Recently acquired a 50W 2 meter rig, and I'm wondering if using aJ-pole
made of 300-ohm twin lead as an emegency antenna would be feasable..or
would the rig be tuned for maximum smoke?


They say it can be done... Not my choice though. I prefer simple 1/4
wave ground planes as simple emergency or temporary antennas.
IE: a 1/4 wave ground plane can be made with five pieces of wire
and an SO-239 connector. Or a telescoping whip that can extend that
far, and four pieces of stiff wire for radials, which would be bent
out at about 45 degrees.
I think the 1/4 wave ground plane will be a better decoupled antenna
vs the usual J-pole, assuming no other decoupling methods are applied.
Another advantage is no matching schemes are required.