Interesting, I found the following in the Icom r75 list: Re: AOR LA 390 loop It works well but doesn't pick up the signal as well as a long wire. On the other hand, it is very quiet and good for a noisy RF environment. Although it covers 150kHz up to 500MHz, I find it's best suited for under 10MHz, especially for nulling unwanted signals. Is it worth the $380.00 it sells for? Hmmm ... I feel it's $180.00 overpriced but there are not a lot of good alternatives, especially for indoors, ease of operation, and noisy RF environments. I quite like it. --- In ----- Original Message ----- From: "Martin McCormick" <[log in to unmask]> To: <[log in to unmask]> Sent: Wednesday, January 26, 2011 8:35 AM Subject: Re: Really Big Transmitters > Maybe we should change the subject line to Really Little > Antennas. I don't know anything about that particular antenna, > but amplified or active antennas have been around for a while > and keep getting better mainly due to FET amplifiers with lower > and lower noise figures. > > The only down side to an antenna like this is that when > you use it indoors, it is going to pick up all the crud from all > the gear you are running so you will have an even better way of > listening to your switching power supply, that little switching > circuit that makes compact fluorescent lamps go and lots of > other hash generators. > > Also, if you live near a very powerful AM or FM radio > station, you might discover that the powerful transmitter > overloads the preamp in the antenna which could cause you grief > by creating lots of mixing products far away from the frequency > you are trying to hear. > > If you have a relatively quiet location, this antenna is > probably fine. > > It sounds kind of interesting so let us know if you get > one and listen through it.