NJDTechnologies

Radio: it's not just a hobby, it's a way of life

Current Operating Frequency and Mode

OFF AIR but QRV after dark tonigth

SCHEDULED ACTIVITY: CQ 474.5 kHz CW by 1015z through sunrise most days, WX permitting

Improving propagation as storm conditions transition to unsettled conditions; WG2XKA cut off to West but DL reports to East; Daytime WG2XSV; WH2XGP –> VK4YB, VK2XGJ; WG2XXM –> VK2DDI, VK2XGJ; WH2XCR –> VK, JA, and ZF1EJ

– Posted in: 630 Meter Daily Reports, 630 Meters

The band was good overnight but it was very different from the previous session where domestic paths were strong and noise levels were very low, almost like it was Winter in North America.  Instead this session presented with a significant increase in noise level, several S-units here in Texas, but signals remained relatively strong.  Trans-Atlantic reports were limited to reports at WG2XKA from DL4RAJ and DH5RAE, two stations that consistently hear North American stations when the band seems unable to support this path.  Both reports arrived during the 0338z transmit cycle.  Curiously, John’s path to the western US was non-existent.

WG2XKA 041516b

WG2XKA session WSPR activity

 

WG2XKA DL4RAJ 041516

WG2XKA, as reported by DL4RAJ

 

WG2XKA DH5RAE 041516

WG2XKA, as reported by DH5RAE

 

Geomagnetic activity is attempting a recovery with fewer sSth-pointing Bz periods and solar wind velocities that have decreased to low levels below 400 km/s.

 

planetary-k-index 041516

 

Kyoto DST 041516

 

Australia 041516

 

Similar to WG2XKA’s cut-off western reports, reports for Phil, VE3CIQ, were also cut-off to the West but he did have one bogus report that got the blood pumping this morning.  Even though the report was not real, phantom reports can often be a good indicator that band conditions are good since many result for the mixing of strong signals in the sound card.  A good session was had in eastern Canada.  Phil offers the following comments and map:

VE3CIQ 041516

 

VE3CIQ map 041516

VE3CIQ session WSPR activity

 

Larry, W7IUV / WH2XGP, reported that he decoded seven WSPR stations and was decoded by thirty unique stations including VK4YB and VK2XGJ.  Larry also notes that local noise conditions are preventing him from decoding VK4YB.

WH2XGP VK4YB 041516

WH2XGP, as reported by VK4YB

 

WH2XGP VK2XGJ 041516

WH2XGP, as reported by VK2XGJ

 

Ken, K5DNL / WG2XXM, reported that he decoded nine WSPR stations and was decoded by 41 unique stations including VK2DDI and VK2XGJ.  Ken also reported that he decoded WH2XCR ten times and was decoded by Merv 53 times with a best of -8 dB S/N.

WG2XXM VK2XGJ 041516

WG2XXM, as reported by VK2XGJ

 

WG2XXM VK2DDI 041516

WG2XXM, as reported by VK2DDI

 

Neil, W0YSE/7 / WG2XSV, started his session early with 200 mW daytime reports from John, VE7BDQ.

WG2XSV 041516

These reports led to a question about the path to John and whether it was a significant salt water path.  Apparently the path is between one quarter and one third distance over salt water but Neil notes that the similar path to VE7SL often yields several dB improvement which may involves the location of Steve’s antenna, which is very near sea water.  Neil provided the following two maps showing the path to VE7BDQ and VE7SL.

WG2XSV wide 041516

Wide view, WG2XSV to VE7SL and VE7BDQ

 

WG2XSV zoom 041516

Zoomed view of path from WG2XSV to VE7SL and VE7BDQ

 

Neil also reports that his PA is now running and his ERP is now 500 mW.  He provided the following statistics for the overnight session:

WG2XSV session 041516

WSPR activity dominated the session once again but activity was decreased during this session with 61 MF WSPR stations observed on the WSPRnet activity page at 0230z.

Regional and continental WSPR breakdowns follow:

NA 041516

North American 24-hour WSPR activity

 

EU 041516

European 24-hour WSPR activity

 

JA 041516

Japanese 24-hour WSPR activity

 

VK 041516

Australian 24-hour WSPR activity

 

No trans-African reports were recorded during this session.  UA0SNV was present from Asiatic Russia but no reports were found in the WSPRnet database.

Eden, ZF1EJ, reported stations across North America in addition to WH2XCR in Hawaii.

ZF1EJ 041516

ZF1EJ 24-hour WSPR activity

 

WH2XCR ZF1EJ 041516

WH2XCR, as reported by ZF1EJ

 

Laurence, KL7L / WE2XPQ, appears to have only been receiving last night, providing reports for WH2XCR.

WE2XPQ 041516

WE2XPQ 24-hour WSPR activity

 

WH2XCR WE2XPQ 041516

WH2XCR, as reported by WE2XPQ

 

The JA path to Merv, K9FD/KH6 / WH2XCR, is open again, with reports from JA1NQI-2 and JH3XCU.  The path to Australia remains strong with reports by VK2DDI, VK2XGJ, and two-way reports with VK3ELV and VK4YB.  John, VK2XGJ, notes that his best report for Merv was -16 dB S/N, almost CW levels.  Because its possible to hear CW that falls outside of the normal -10 dB S/N barrier when then band is quiet, it might be wise to turn up the volume and listen to the noise a bit in hopes of hearing Merv’s CW ID.

WH2XCR 041516

WH2XCR 24-hour WSPR activity

 

WH2XCR VK2DDI 041516

WH2XCR, as reported by VK2DDI

 

WH2XCR VK3ELV 041516

WH2XCR, as reported by VK3ELV

 

WH2XCR VK2XGJ 041516

WH2XCR, as reported by VK2XGJ

 

WH2XCr VK4YB 041516

WH2XCR, as reported by VK4YB

 

WH2XCR JH3XCU 041516

WH2XCR, as reported by JH3XCU

 

WH2XCR JA1NQI2 041516

WH2XCR, as reported by JA1NQI-2

 

In Australia, two-way reports continue between WH2XCR,  Phil, VK3ELV, and Roger, VK4YB through the session.  Reports right up to Merv’s sunrise were observed with these stations.  Phil also received a multitude of reports from Japan, a few of which were from late in the previous session so they are included here today.

VK4YB WH2XCR 041516

VK4YB, as reported by WH2XCR

 

VK3ELV WH2XCR 041516

VK3ELV, as reported by WH2XCR

 

VK3ELV TNUKJPM 041516

VK3ELV, as reported by TNUKJPM

 

VK3ELV JH3XCU 041516

VK3ELV, as reported by JH3XCU

 

VK3ELV JH1INM 041516

VK3ELV, as reported by JH1INM

 

VK3ELV JA8SCD 041516

VK3ELV, as reported by JA8SCD

 

VK3ELV JA8SCD5 041516

VK3ELV, as reported by JA8SCD5

 

VK3ELV JA1NQI2 041516

VK3ELV, as reported by JA1NQI-2

 

Jim, W5EST, compares the trans-equitoral and trans-Atlantic paths in this discussion entitled, “EU-FR5 2015-16 SEASON COMPARED WITH TA (UK/EU – N.AM.)”:

“Remember the FR5ZX 630m excitement Oct. 30Jan. 30 activating Reunion Island reception?

DH5RAE, DJ0ABR, DF6NM, DK7FC, EA5DOM, G8HUH, IW4DXW, IZ7SLZ, PA0A, SV3DVO, SV8CS — these were the successful TX players at the north end of this path.  Kudos to all!

At 8800km, EU-FR5 starts at latitude 51°N and crosses the equator to Reunion Island 21°S.

Shorter but arduous TA arcs to 57°N and travels 6700km between N.America 40°N and EU 51°N. The longitude span of TA is about 80° while EU-FR5 spans 55° of longitude eastward far south.

I’ve graphically superimposed  the EU-FR5 activity (dark brown) on a background showing transatlantic (TA) activity of the season (faint purple).  Notwithstanding its transequatorial character, EU-FR5 activity surprisingly mimicked the one-month periodicity of transatlantic decodes for as long as the EU-FR5 activity lasted.

Given the one-month EU-FR5 repetition period, and not a two week period, I presume the explanation involves solar rotation and space weather.  However, I include a Date Table of Lunar Phases for good measure.

Considering the similarity of EU-FR5 peak timing to TA timing, I surmise that the chain of causation of both behaviors is linked to the Northern Hemisphere and not regions farther south.

In a later blog post let’s consider 630m Pacific paths that join the Southern Hemisphere with Northern Hemisphere latitudes less northerly than those Europe occupies.

                DATE TABLE OF LUNAR PHASES 2015-2016 SEASON

Full moon:          8/29    9/28   10/27  11/25   12/25  1/24    2/22   3/23   4/22  5/21

3rd quarter:        9/5    10/4   11/3    12/3     1/02    2/01    3/01   3/31   4/30  5/29

EU-FR5 peaks*                      11/6    12/6     1/03    1/30

XCR-JA peaks               10/8   11/6    12/4     1/04    2/04    3/04  3/27,30

2015-16 TA peaks         10/5   11/1    12/4     1/01,10, 20,28   3/06 3/27,30

New Moon:         9/13  10/13  11/11  12/11    1/10    2/08    3/09  4/07   5/06  6/05

1st qtr.:                 9/21  10/20  11/19  12/18    1/16    2/15    3/16  4/14   5/13  6/12

XCR-JA peaks                                    12/21    1/21    2/16

———————————————————————————————————————

*Dates of more EU-FR5 peaks were 11/1, 6, 8, 9, 11; 12/6, 9, 10; 1/3, 8, 10, 30.”

W5EST 041516

 

 

Additions, corrections, clarifications, etc?  Send me a message on the Contact page or directly to KB5NJD <at> gmail dot (com)!