More on my ultralight experience (P.S. next post = #10000)


Interesting. I've had times when I've wanted better directionality for digging out co-channel DX. For example, there's a 700-watt station on 910 in Hesperia, CA, that I would like to listen to that is about 115.36 miles from me at a heading of 347.26°, but I'm 9.39 miles from a 5kW local on the same channel at a heading of 7.00° with a RSSI of 62-63dBu using my PL-380's stock ferrite. I don't have room for a long beverage antenna (I'm on a half acre that's about 90 feet north to south, and around 240 feet east to west, but would realistically only have about 150 feet east/west and maybe 40-50 feet north/south to set up an antenna), so is there a way to null the local to pull in the DX?

Also... the next post on this group will be #10,000. Any ideas what it will be? I was kind-of hoping it would be some monumental post, like scott willingham announcing a new and improved DSP chip, Gary announcing a new radio based on that chip, or something... but being this close to the milestone, I don't see that happening.

--- In ultralightdx@..., Bill M <radioexray@...> wrote:

neilbellgroups wrote:

This means many MW stations lie either to the north or to the south.
Using loops or loopsticks means that trying to null out a station to
the north also nulls stations to the south. Obviously, this
complicates DXing to the north or south.
Something I stumbled on once was the ability to get a unidirectional
effect using an air-loop (big one, 24" on a side) coupled with a 1-2
turn loop around the case of a transistor radio. As it was explained to
me, what was happening was some combination of signal cancellation
between the radio's internal ferrite antenna vs the loop.

I didn't do any precise testing...I sorta fell on it accidentally.

Nevertheless, it sounds like a good area for experimentation with a pair
of loops/loopsticks for guys who are located in places like the west
coast US.