Re: LF: Re: Power experiment / Mini Whip / 8970 Hz !

["Roelof Bakker" <roelof@ndb.demon.nl>]

Hello Peter,

I found that a BFQ19S gives slight better strong signal handling  
performance.
But more important, it works better at a lower supply voltage.
So, for use with a 9V battery, the BFQ19S is recommended.
At 12V you will not notice any difference.

You could also try to feed the antenna direct from a battery by a separate  
two wire DC cable, instead of over the coax cable.
In this case the antenna interface can be omitted.
It is best to place the battery at the foot of the mast.

There are more options, like using CAT5 cable, isolating transformers etc.
However, it all depends on your specific location.

73,
Roelof, pa0rdt