3B7A 40M Propagation Study

0300z: DX Atlas says my path to 3B7 is 353 degrees SP and 173 LP. There is no way that I am hearing them on the Short Path at 353 degrees, so I must be hearing them on the Long Path. They have been weak except a really strong “burst” for maybe 5 – 10 minutes – and it is a grey line enhancement….

Mad Antenna Science Weekend!

Now that all the hardware (structures and wiring) is in, I can take some time to do some tests and experiments. Here is a list of things I will try with the two 60′ (18M) Spiderbeam Fiberglass based wire verticals: Tune the verticals for the DX Engineering phasing solution. Check to see if the radial field – as strange as it is works. Try…

UrbanBeam on West Coast 40M Short and Long Path

This is a very interesting test. When I had the Cushcraft D40 up about 45 feet, on the morning Long Path, it beat the DX Engineering DV-40-P consistently to VK/ZL, ZS and all parts in between. During the night time Short Path, the 40M Phased Array always won. Last night – with the UrbanBeam up only 34-ish feet to ZS6CCY, this was certainly the…

The Sure Fire Cycle 25 Prediction!

I have read several predictions for Cycle 25: It will be weaker than Cycle 24 It will be the same as Cycle 24 It will be similar to Cycle 23 I remember how many predictions there were at this time before Cycle 24. There were so many – it was hard to take any seriously – but each of us believed what we wanted…

The Pedersen Ray and Chordal Ducting

The ARRL Extra Class License Book contains the best explanation of why my DX Engineering DV-40-P 40M phased vertical array out performs the low Cushcraft D40 rotatable dipole up only 40′ to ZS on the Short Path at night (the lower angle goes farther and its launched in the dark at my end). The “magic” that I experience during the morning greyline to ZS…

40M LP and SP Take Off Angles

The F1 layer exists only in summer, and during the Northern Hemisphere Winter, our F2 layer means that we get more distance covered by each hop. At ZS they have both F1 and F2 because its their Summer. ZS6CCY has a low take off, high gain antenna – 3 element yagi up high on 40M. This is why he always will be doing most…

Take Off Angle and HF Propagation

My 40M A – B tests between the DX Engineering DV-40-P phased vertical array and the Cushcraft D40 rotatable dipole have left me wondering. Why does the phased vertical array work better on the evening Short Path and the dipole on the morning Long Path to ZS. This “oldie but goodie” paper seems to describe at least some of what is going on: http://nvlpubs.nist.gov/nistpubs/jres/65D/jresv65Dn2p167_A1b.pdf…

The End of the EU LP Line

After an early morning DX “session” on 160M, I listen on 40M for EU and ZS on the Long Path. We are right at the end of EU being strong on that path, but fortunately, because ZS is in the Southern Hemisphere, we have a Long Path opening on 40M almost daily year round. In fact, I think we also have the evening Short…

Ham Radio . . . For The Fun of It

I enjoy my ham radio “shack”. Its really is a shack I built in the garage and is quite cozy. Like this fellow above in the Gil, W1CJD (SK) cartoon – it has a heater and cooling. A big part of the hobby is station “configuration” – and its fun to try new gear and swap pieces in and out. In the last year…

40M Long Path Test (#2) : Cushcraft D40 for the Win!

On the Long Path to Italy, the Cushcraft D40 is the clear winner, by one to two S points. This is about the same difference that the DV-40-P wins on the Short Path to ZS at my night time. I0QMN is booming in with a S9 +20 dB signal.