In article .com,
wrote:
wrote:

++++++++++++++++++
For some ideas that work look up:
Burhans, RW; "VLF active antennas," Radio Electronics, pp. 63-66,
February 1983.(pdf)
Burhans, RW; "VLF active antennas-part 2," Radio Electronics, pp.
65-72, March 1983.(pdf)
at http://www.rsl.ku.edu/~eecs501/active_antennas/

His unusual "split/counter" wound ferrite loop works very well.
Smaller Ferrite rods will work at higher freqs.

The Burhans papers are on vertical whips. They are really noisy for HF.
But the list of papers is impressive.

The loop antenna article is in the June 1983 Radio-Electronics.

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)