6295Re: Okay, a new loop believer!
- Feb 2, 2009Hey Bill - SOunds like you are having fun. I've had great results w/ a
multi-turn loop on BCB w/ the 1103. Even barefoot it is an amazing
performer. BTW, it still throws me for a 'loop' (sorry:) to see a 9
callsign from Florida.
-Mark (former WB9AQI - licensed in the 60s-70s)
--- In firstname.lastname@example.org, "Bill" <harpman54@...> wrote:
> At my bedside I have a Degen 1103 radio, actually a really nice little
> radio that has MW and SW bands. You can actually 'fool' the radio into
> starting at 0 khz and working up in frequency using an easy software
> 'hack' but the lower khz segments below MW seem to have some
> 'overload' from local stations if using either a long wire or anything
> other than the internal ferrite antenna.
> The neat thing about the radio is that IF you plug in an external
> antenna, both the AM ferrite antenna and the telescoping SW antenna
> are disconnected in favor of the external. Sooo, I decided to build a
> little loop antenna and see if it made a difference.
> I had on hand a wire spool for some ham coax (I am a ham op - KC9CS)
> and took the spool apart because it had a nice sturdy 9" cardboard
> tube. I cut about 2" off the tube and used this for my loop form. I
> had some twin speaker line with tiny, probably 22 gauge wire which I
> split lengthwise. It is solid core wire. I wound 22 turns of this on
> the 9" tube. For a capacitor I had four small, identical 100pf
> variable capacitors that I wired together, not wanting to pirate my
> 365pf variables from either of my crystal sets. I wired up the input
> cable and tried the new loop this afternoon about 5 pm, the sun was
> still up here in west central Florida.
> My first station I pulled in was in Atlanta! A full 500 miles distant
> and still daylight. WOW! Now that it is evening, I'm experimenting and
> listening with it starting at the low end of the MW band. WSM is an
> easy catch from Nashville at 650 khz, which is about at far as I've
> scanned yet. DX'ing from Florida is kind of tough because we get a LOT
> of spanish stations from who knows where. Mexico is just across the
> Gulf of Mexico, lots of spanish speaking Caribbean Islands too. What
> impresses me with this antenna is how well it is regarding
> directivity. Turn the antenna slowly and the signal drops out, another
> pops up. Turn it back and the noise disappears, the desired station
> jumps back in. I haven't noticed a lot of difference using the
> capacitors yet, but I've only played with this antenna for about an
> hour so far. I'm sure as I gain experience it will improve. Something
> else dawned on me too....I don't remember paying much attention to
> linking those 4 capacitors together -- whether they were all series
> linked or series-paralleled. That WOULD make a difference, but
> tomorrow will be time enough. In the meantime, I am amazed at the way
> this little loop works.
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