It is some years since I have tried these antennas. They are RX only and can be very effective at VLF, LF and MF. Some use them on RX up to 30MHz. They are very small.
Positioning can be important to minimise man-made noise pick-up. Normally they are placed as far as possible from houses and electrical noise sources.
In the past I would have made my own but as my fine motor skills are not what they once were I have bought one from PA0RDT.
Next winter, I may erect this high up in a nearby tree and have a serious go at 137kHz and 472kHz RX. It would probably be effective on 1800kHz too.
See https://sites.google.com/site/g3xbmqrp3/mflf/winter
See also https://sites.google.com/site/g3xbmqrp3/antennas/efp
No comments:
Post a Comment