Posts Tagged ‘Sporadic-E’
The Magic Grows Weaker
August 8th, 2014 | 
Author: 
Recent comments on the ON4KST 6m chat page tend to indicate that the summer's Sporadic-E season is rapidly drawing to a close...."time to move to 160?" ..."how long 'til Es season? " ..... "is that it for the year?". Peaking around early July, I'm always surprised at how rapidly the three-month propagation-party zips by and, as always, leaves us wanting just a little bit more.
Unlike the past several summers, I had no European QSO's this year. The July 27th VE6 - Europe event was as close as it came but who knows what might have been missed during some of those predawn propagation periods when most west coasters are still sawing wood. Ever-vigilant KL7KY was alert enough to find Europeans at 0300 his time, on two separate July occasions, making me wonder if the same thing might happen down here as well? After Kevin's over-the-pole success, I started all day and overnight scans of the northern Canadian beacon segment (50.010 - 50. 050) with the 756PROIII's versatile (non-squelched) scan mode and the yagi pointed at 035 degrees. Even considering my somewhat late-season start, I was surprised at how often the beacons were making an appearance, often popping-up late in the evening or in the middle of the night....without the scan, these conditions would normally go unnoticed. I probably began my scans too late in the season and next summer will begin earlier, about mid-June through mid-July, hopefully giving me a better chance for Europe. John, VE7DAY, has also expressed interest in pursuing this more diligently next summer as well and has even spoken of daily 0300 over-the-pole CQ's during the mid-season's peak period.
The season highlights for this summer are very few....contacts with LU5FF, BV2DQ, EA8DBM, several dozen JA's and one new U.S. grid for the FFMA struggle.
I still need 49 grids to have all 488 continental U.S. grids confirmed but at this year's rate I'll need to live until I'm 115.
Six meters may yet still hold a late-season surprise for us but if the fat-lady hasn't already sung then she's just behind the curtain ....clearing her throat.
6m Polar Madness
Looking at the path on DX Atlas shows an almost all-daylight path from VE7 to Europe, but for the first short hop out of the summer twilight.
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| VE7 - EU at 1100Z |
I was soon joined by John, VE7DAY, and we both began to CQ towards the sunlight after alerting several of the European operators via the ON4KST chat page. No 49MHz eastern Europe video signals were heard at all but this is often not a deal breaker. One beacon that always seems to be present when hearing Europe, the VA5MG/b in central Saskatchewan, was not heard either. After 90 minutes of no other indicators I headed back to bed.
In view of the high levels of summer Es in the sunlight-bathed Arctic / northern Canada regions, this crazy night time path might be worth exploring more closely during the last week of June and the first week of July. In view of the ungodly hour however, I fear that it may be some time before 6m reveals more of her secrets.
Great 6m Es Conditions Continue!
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| 6m July 08 Courtesy: ON4KST.org |
Six meter operators in the western part of the continent exchanged signals with Japan, Taiwan, China and South Korea beginning at around sunset on the west coast and continuing until 0230 the next morning! Many stations on both ends of the path filled their logs during the heyday event.
To add to the fun, BV2DQ (Ran) in Taiwan, was also active and gave several 6m ops a new country, working as far east as Colorado.
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| BA4SI 6m stacked Yagis |
" W7FI Jim - That blows away my 113 JA last night, pile still calling when I qrt'd at 0800z. "
I was also present for the action, but worked only a few dozen of the strongest signals as I have been plagued with exceptionally high power line noise this summer, directly in line with Asia. Additionally, a new source of QRM has cropped-up in the form of an S9+ 49MHz wireless headset that has drifted up into the band. As the days get warmer, it has now drifted from below 50MHz up into the working part of the band and last night had settled itself smack on 50.090. Being a wide band FM signal, it effectively destroys any reception for about 50KHz of the band. As Murphy would have it, the crud is coming from the exact same direction as my beam heading to Asia. Yesterday I was able to roughly determine its location with a handheld Icom scanner and today I will use a quickly-built 6m dipole to zero-in on the offending source. Hopefully I can eliminate the problem soon.
6m Action
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| Courtesy: DXMAPS.COM |
Where Are The Es ?
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| Courtesy: DXMAPS.COM |
Having been on 6m now for over 40 years (yikes!), like most 6m operators I've come to expect a fairly good number of Es openings by the end of June. This summer's Es season has been beyond poor, with far too many days looking much like Saturday morning's 6m propagation map (above) from DX Sherlock.
So far, the only bright spot for me has been a very short twenty-minute opening to Argentina and a CW QSO with LU5FF on May 24 at around 1500 hours local time.
Most 6m ops feel that sunspot cycle peak years also produce poorer than normal Es activity so maybe this is all just normal...or perhaps our global climate shifts are having an effect on the triggering mechanisms for Sporadic-E, just 60 miles above our heads.
Real-time 6m propagation can be followed here; Region 2 for North America and Region 3 for Europe.
After so many summers on six, I personally believe that the best propagation usually happens during the first week of July, so there is still hope for a really terrific month ahead and still time for whoever controls the magic to yet redeem themselves.
Sporadic on Six
Today there has been a really big Sporadic-E opening on 6m which lasted for several hours. In fact it is still going on as I type this.
This snapshot of activity from DXMaps gives an idea of what the opening was like at its peak. The whole of western Europe must have been covered by a reflective Sporadic-E cloud!
From DXMaps I could see that the opening extended up to 2m for a time, though I didn’t hear anything myself. Unfortunately my QTH is poor for VHF so conditions have to be exceptionally good for me to hear any 2m DX let alone work it. So 6 remains my favourite VHF band.
I made several 6m contacts on SSB and several on PSK31. The most interesting call was LY44WFF, a DXpedition to Klaipeda, Lithuania KO05oi which is quite a rare square so I’m told. Best DX on PSK31 was probably David, 5B4AHY.
I never quite know how to answer calls on 6m PSK31. Some operators seem to use quick, contest style operating while others reel out their name, QTH, EPC number and so on. I prefer the quick format myself, with the aim of getting the contact completed before the conditions fade out. But if someone wants to exchange a bit more information I try to do that too.
A station operating RTTY was an unwelcome presence among the PSK just above 50.250. One RTTY station came up right smack on top of someone operating PSK63. Surprisingly I got perfect copy of the PSK63 station which was straddled by the RTTY signal! Surely it is time to abandon this old, wide, slow outmoded mode?
6m 18 May 2013
This Saturday morning there was a big Sporadic-E opening on 6m. There were some pretty big signals, though once again I seemed to be on the edge of the opening. The Sporadic-E seemed centered over northern Europe and you can see from the map that it was pretty intense!.
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| 6m on 18 May 2013 at 0930z. Map from DXMaps.com |
I had KComm’s DX Cluster window open. I don’t use the cluster on HF and dislike it intensely, but spotting stations on the cluster (in a specific format with locators for both endpoints) is how VHF contact information gets to DXMaps.com.
I saw a couple of contacts from Ireland spotted on 2m so I switched bands.
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| 2m on 18 May 2013 at 0940z. Map from DXMaps.com |
As you can see, two lucky EI stations managed to work into northern Italy, one of them using a vertical antenna! Signals must have been strong but when I QSYed to 2m I didn’t hear anything. The Es must have been over the northern French coast and you can see that the same Es cloud must have permitted F6HTJ to spot the GB3ANG beacon and enabled DG7IG to work EA1CCM as the paths intersect at the exact same point..
I wasn’t lucky on 2m but I was a bit more successful on data and tuned to the PSK part of the 6m band just in time to catch a French station signing off with Tim, G4VXE. I managed QSOs with Gerard F4LKG and George EA4GB but I don’t think many stations were listening because my CQs went unanswered.
It seems as if the 2013 Sporadic-E season is off to a good start!
