[Elecraft] Portable Antennas (near end fed)

[Jim Brown]

On 5/11/2012 10:46 AM, Tom Azlin N4ZPT wrote:
> My experience in a hotel room is they do not work well at all. Seems
> like you are inside a cage with RFI emitters all around you. Even high
> up in the hotel.

Right. Trying to operate on the HF bands with an antenna inside of a 
metal frame building displays a complete ignorance of the Laws of 
Physics. Get the antenna outside and it's a different story. Sometimes 
that's possible, sometimes it is not.  And it's also quite possible to 
TX using indoor antennas in wood frame buildings.  The problem is going 
to be RX noise -- you're going to be lucky to hear anything but the 
loudest signals on the band.

On the other hand, you can have some fun on VHF and UHF with a talkie in 
a window on a high floor -- you can work pretty well for roughly 150 
degrees of azimuth that the window provides, but the building will 
shield you from signals arriving from other directions.

73, Jim K9YC