[Boatanchors] OT: Something I don't understand about 10M propagation

[Phil]

Hi All,

First, let me say that I've been "radioactive" in one form or another 
since the early 1950's.  Have a LOT of radio-time under my belt.

OK, we're basically at the sunspot low and I realize that 10M prop, for 
the most part is rather poor.  Earlier in the cycle it was very routine 
for me to see spots of my beacon from coast to coast, Australia, DAILY 
to Hawaii, etc.  I don't expect to see that now, and am thrilled when I 
see the occasional Hawaii spots of my beacon.

But one thing puzzles me.  It seems that I almost have a 'pipeline' to 
KU7T in North Bend, WA, and to a slightly lesser extent to K2PO 
(Portland OR) (My QTH is Central California). Spots occur to them on 
almost a daily basis (yes a few days go spotless), but what puzzles me 
is not so much the spots, but the time of them.  I would expect 10M prop 
to peak in the midday or late afternoon, or maybe at 'grayline'.  But 
not these!  They most often occur WELL after nightfall.  Like tonight 
they are occurring from 0528Z to the present, 0612Z.  That is 10:28PM to 
11:12PM local time.  They also frequently occur in the morning between 
1430Z to 1630Z, but NOT later in the daytime like I'd expect. . .

NOTE:  You can see my spots at the following RBN site, set the "Rows to 
show" button to 100 to see up to 100 spots at a time. NOTE:  On Friday 
Mornings (after midnight?) the database archive is wiped clean and 
nothing will be shown until new ones pop up.

http://www.reversebeacon.net/dxsd1/dxsd1.php?f=0&c=KO6BB%2FB&t=dx

-- 
73 From "The Beaconeer's Lair"
Specializing in DXing NDBs (Longwave Beacons)
Phil, KO6BB,  http://www.qsl.net/ko6bb/
KO6BB/B beacon, ~20W on 28.290 MHz, Ringo Vertical

HF/LF RADIOS:
HOMEBREW:   7 Tube+Rect 1v3 Regen RX for LF (built 2015)
Icom:       IC-7200 Xceiver, DSP IF & filters (~2015).
Kenwood:    TS-450SAT Xceiver, cascaded 250/125Hz Inrad filters.
10M Beacon: Realistic HTX-100 on 28.290MHz
SDR:        Softrock Ensemble II LF (built from a kit 2017).

ACC:   HOMEBREW  LF-MF Pre-Amp, 8Hz Audio Filter.
        HOMEBREW  4 Port Antenna Multicoupler, Feeds 4 RX's.
        
ANTENNAS: 88 foot Long Ladder-line fed dipole, 35 feet AGL for MW/SW.
           Active Mini-Whip, 36 Feet AGL for LF/MW/SW.
           37 foot "Low Noise Vertical", 11 feet AGL for LF/MW/SW.
           Cushcraft AR-10 Ringo Vertical, 14 feet AGL for 10M beacon.
Merced, Central California, 37, 18, 37N   120, 30, 6W CM97rh


---
This email has been checked for viruses by AVG.
http://www.avg.com