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Showing posts from 2014

Stew Perry 160m DX challenge December 2014 en 70MHz XVTR test

147 Q  716 points

15x W  3x VE   best DX was 22 points best  signals from EM main grid.

P4/DL6RAI FK42  one of the best (few) DX signals  but total deaf for EU calls.

Very weak TA signals absolute the poorest propagation ever during a SP here.
Never happened before  not one RBN  spot in W.
Now a Beverage 450m in direction West high expectations of it.
The first RX tests at 630m looked very promising.
G's  from West came in 6-10dB stronger compared to the TX vertical.
But something must have changed since I could not reproduce that first good results.
In the SP the Beverage was not better then the K9AY
So I have to check in the field.


Stew Perry  Alleen de nacht van zaterdag op zondag meegedaan
Ivm TVI  op de  KPN Motorola 1863 kabeltuner.
160m zeer matig deze keer zwakke signalen uit W 15x en VE 3x
De Beverage richting west viel ook niet mee de K9AY won het.

4M   70MHz
70MHz  XVTR weer aangesloten op de oude FT102  met FM module.
De preamp met BF900 leek wel defect  geen antenne …

SONY NXP FM super tuner hot on EBAY

Image
XDR  S3HD



De hele tuner bestaat uit een paar simpele filtertjes.
De 2 NXP ( PHILIPS)  chips bepalen de eigenschappen.

and inside you'll find the NXP TEF6730/SAF7730 radio chipset and several adjustments. The HD module contains an SAF3550 processor and a 16MB SDRAM.
een zeer goede review hier
http://ham-radio.com/k6sti/xdr-f1hd.htm


The XDR-F1HD uses advanced digital signal processing algorithms to dramatically improve reception of FM signals corrupted by noise and interference. Threshold extension suppresses the impulse noise ordinary FM detectors generate for weak signals. The obtrusive character of this noise quickly degrades reception quality as the signal level falls below a threshold. The impulses arise from detection-vector phase reversal due to additive noise peaks. High-performance satellite and terrestrial microwave FM links have long used various threshold extension techniques to enhance performance. Tracking filter detectors that may extend the threshold occasionally have appe…

weak signal top list

the weakest decodes top list  WSPR V2.21  last 12 hours


TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz 2014-12-24 10:32  G3ZJO  0.475783  -33  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 08:02  G3ZJO  0.475783  -33  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 09:42  G3ZJO  0.475783  -33  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 07:52  G3ZJO  0.475783  -32  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 11:22  G3ZJO  0.475783  -32  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 06:42  G3ZJO  0.475783  -32  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 02:12  G3ZJO  0.475783  -32  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 09:32  G3ZJO  0.475783  -32  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 08:42  G3ZJO  0.475783  -32  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 08:12  G3ZJO  0.475783  -32  0  IO92ng  0.01  PA0O  JO33hg  516  75  2014-12-24 05:14  PA0O  0.475764  -32  0  JO33hg  0.5  OH8/OH6JKN  KP24tl  1644  33  2014-12-…

630M CW recordings

Image
DK7FC     CW  test  579
DL6TY  Gerd  472.3 kHz  559   on vertical TX antenna  weaker on loop

I2BBJ  Italo JN55AM    472.63 kHz 599 / 549

dk7fc_630.wav

DL6TY

I2BBJ qso

I2BBJ CQ


N1MM+  ( en ook de clasic N1MM)    wil helaas niet verbindingen op 473kHz loggen
ook niet met force logging  ctrl alt enter

after force logging
CTRL + ALT + ENTER   you can enter a remark window but then logging is not possible



Stormy week

Image
Even the inverted L was broken from the tree and the top-load was fluttering in the wind  had to stop 630m TX-ing
we where lucky last weekend in the ARRL10  it was a 2 day break in only storm and rain 

 Rx antenna K9AY  big shower in north approaching


28M  still wide open flux over 200
WSPR page 28MHz >18000km 


Lage der Aa Groningen  het oude QTH  vanmiddag




60m SWL  WSPR 
 2014-12-19 18:00  ZS5KAD  5.288731  -17  0  KG50mb  5  PA0O  JO33hg  9549  346  2014-12-19 17:58  ZS6KTS  5.288652  -23  0  KG43cw  5  PA0O  JO33hg  9065  347  2014-12-19 18:00  ZS6SRL  5.288739  -14  0  KG33wv  10  PA0O  JO33hg  9062  347

475kHz WSPR

Still  best DX  in Europe  no transatlantic decodes yet

many EU hams  active 630m

few SWL reports  please more  SWL  in WSPR  !

last 2 weeks 200 unique decodes    showing my 475kHz WSPR landscape

TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz 2014-12-04 23:22  PA0O  0.475624  -29  0  JO33hg  0.2  SV8RV  KM07ks  2042  142  2014-12-04 21:00  PA0O  0.475620  -29  0  JO33hg  0.2  SV8CS  KM07jr  2042  142  2014-12-04 19:40  SV3DVO  0.475742  -30  0  KM08uf  0.005  PA0O  JO33hg  2032  330  2014-12-04 21:00  PA0O  0.475621  -28  0  JO33hg  0.2  IZ7PDX  JN80ps  1604  146  2014-12-10 22:06  PA0O  0.475619  -28  0  JO33hg  0.5  IQ7GC/7  JN80nv  1585  146  2014-12-04 11:24  PA0O  0.475622  -29  0  JO33hg  0.2  OH6JKN  KP22xk  1521  40  2014-12-04 15:24  PA0O  0.475619  -13  0  JO33hg  0.2  OH3LMN  KP11wm  1374  41  2014-12-05 14:50  PA0O  0.475625  -21  0  JO33hg  0.2  ES5AM  KO38gr  1372  56  2014-12-14 20:32  EA3NE  0.475729  -25  0  JN11an  0.5  PA0O  JO33hg  1346  13  2014-12-14 18:38  PA0…