Skip to main content


This season my 2m station was ready for ES with some more power.
Spectaculair ES openings but happening else where in EU to EA8 and even D41CV
In my QTH at sea level it was a poor ES and tropo season. 
Except end of June 2m tropo  to EA1 and
23cm heard EA2TM 1296855  SK1UHF ES0SHF  beacon´s

We suffered unusual 3 heath waves. Temperature went up to 40C in PA no serious rain in months.

Last week of August spent in EA6 Costa de la Calma JM19FM
It is very beautiful in EA6 but my timing was not brilliant we left  at the start of a 10 day heath wave, the third this year.
And missed the EA8 ES 28 August opening to  I guess only south PA... 
Warm also near Palma but Tuesday a morning heavy rainstorm  and elsewhere in Spain heavy flooding's reported while in normally cool Groningen the temperature was up to 31 again
But it went over without damage here and in afternoon back to 28-30C

Took the U3S with me and a Wilson mobile magnet base  10m antenna 50cm vertical only
placed on the balcony metal frame the only metal part available
About 50m above sea at the south part of Mallorca island
I was surprised of the many reports PA0O/1  from JM19FM  100mW at 10 and 12
best dx was FY5GE   and many EU spots including PD0OHW the owner of the U3S
Wilson mobile sticks to the frame 
Next morning heavy rain storm some houres

Ready for the 144 ES / tropo ... high expectations but never showed up in my QTH
probably a couple of kw is the standard nowadays  ;-)
but this PA can deliver 150 200W whisper quiet..
Does not matter real dx in JO33hg  seems not possible?
 a preamp SPF5189z  it just fits in just for fun and to see if the Hi dynamic XVTR can handle local strong signals.
I know now it could not handle the strong neighbor contest signal.
I use the good old IC706 driving rx/tx 144 MHz and the 706 did not have trouble with the local club station 2m band torture..  
by mistake this 5V SPF was on 12V  some time but it seems not to be damaged by the mistreatment
it is still high gain 5V / 80mA and reasonable stable against  self oscillating with a 50R terminating SMA

                                  Today  Sunday early morning i see  144.174 some hams in PA calling and reporting CU3EQ !   but again only south of me  not a beep here. since June no  ES or tropo DX seen!             

TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz# Spots
 2019-08-27 16:50  PA0O/1  28.126160  -9  0  JM19fm  0.1  FY5KE  GJ35  6703  251  8 
 2019-08-30 10:12  PA0O/1  28.126151  -20  0  JM19fm  0.1  EA8BFK  IL38bo  1928  236  15 
 2019-08-27 10:00  PA0O/1  28.126149  -30  0  JM19fm  0.1  OZ7IT  JO65df  1893  19  1 
 2019-08-27 11:28  PA0O/1  28.126151  -30  0  JM19fm  0.1  EI7GL  IO51tu  1605  332  3 
 2019-08-27 13:30  PA0O/1  28.126090  -22  0  JM19fm  0.1  PD0OHW  JO33lc  1549  11  55 
 2019-08-27 12:02  PA0O/1  28.126155  -19  0  JM19fm  0.1  DL3IAD  JO31is  1401  12  10 
 2019-08-27 11:28  PA0O/1  28.126079  -27  0  JM19fm  0.1  ON7KB  JO21  1344  7  2 
 2019-08-26 12:44  PA0O/1  28.126125  -28  0  JM19fm  0.1  DK7DE  JO31dh  1344  12  1 
 2019-08-27 11:20  PA0O/1  28.126155  -29  1  JM19fm  0.1  M3MSM  IO70kg  1335  336  3 
 2019-08-27 11:28  PA0O/1  28.126148  -25  0  JM19fm  0.1  SWUKSDR/2  IO80pw  1332  344  12 
 2019-08-27 14:52  PA0O/1  28.126103  -25  0  JM19fm  0.1  DG4FCX  JO40  1320  20  7 
 2019-08-27 13:18  PA0O/1  28.126148  -28  0  JM19fm  0.1  DK4RW  JO40oe  1299  22  3 
 2019-08-28 14:00  PA0O/1  28.126165  -28  0  JM19fm  0.1  DL4RDJ  JN58wt  1275  33  2 
 2019-08-26 10:44  PA0O/1  28.126134  -21  0  JM19fm  0.1  DK6UG  JN49cm  1201  20  268 
 2019-08-27 13:10  PA0O/1  28.126147  -26  0  JM19fm  0.1  DB4MM  JN58bq  1188  28  6 
 2019-08-27 12:10  PA0O/1  28.126147  -25  0  JM19fm  0.1  LX1DQ  JN39cq  1168  13  23 
 2019-08-28 11:10  PA0O/1  28.126151  -23  0  JM19fm  0.1  DL1GCD/2  JN48ar  1116  22  128 
 2019-08-27 13:12  PA0O/1  28.126147  -22  0  JM19fm  0.1  F6BIR  JN19cf  1080  359  47 
 2019-08-27 12:48  PA0O/1  28.126148  -26  0  JM19fm  0.1  OE9GHV  JN47wk  1063  32  9 
 2019-08-27 13:10  PA0O/1  28.126048  -27  0  JM19fm  0.1  OE9HLH  JN47um  1063  31  11 
 2019-08-27 09:10  PA0O/1  28.126104  -21  0  JM19fm  0.1  HB9TMC  JN46lj  929  33  101 
 2019-08-27 13:52  PA0O/1  28.126123  -21  0  JM19fm  0.1  HB9PM  JN36sx  925  25  93 
 2019-08-27 12:00  PA0O/1  28.126153  -24  2  JM19fm  0.1  IZ5ILH  JN53ps  872  54  26 
 2019-09-01 20:20  PA0O/1  28.126169  +8  0  JO33hg  0.1  PA0O  JO33hg  0  0  39


Popular posts from this blog

SPF5189z Low noise preamp 23cm

14-4-2018 updated

Above the low noise  preamp 50 - 4GHz    ebay  6€

Tested  2 small porto antennas
1 Baofeng UV antenna left   2nd best signal on PI2NOS
2 eBay DIAMONDSRH805S  wide band 144/432/1200  it works for its size as expected
3 piece of wire :   best signal in the setup...

Unit under test at workbench.
It was stable  50mA  at 5V   few days,  but sudden the current went up to 100mA
And i could  no longer adjust it with the negative bias Voltage.
The - Voltage went to zero and the SPF input port became low Z.
This SPF5189z was broken  no oscillations, no input overload just it broke while i was receiving the PI2NOS 430.125 using a small antenna at the workbench.

The specs of  SPF5189z  say it has an internal circuit  regulating the bias current.
Replaced . again   with an other of the 5 spare SPF i have.
The new one again could be adjusted at 50mA  5V 
The current raises to 150mA  when removing the  negative gate voltage.
Where is that internal bias circuit ?
I suspect  eBay …

2011-01-22 DIAMOND X30 2m 70cm 1m30 Colinear inside

Having relative poor signals on the local 70cm / 2m channels using this Diamond collinear 70/2 combi antenna at a height of 25m. I needed to investigate what could be wrong.
Measuring the cable only 3W is left for the antenna of the 10W 435MHz output from a IC451E
The cable is 30m type H100 Z50 10mm outside diameter it is semi air-spaced but has an impossible 4mm² solid CU inner conductor not much air left. I preferred the H43 Z75 cable having lower loss and mechanical better ratio in conductor size but it is no longer selling i think. This H43
3W should be enough for a comfortable noise free FM signal. But only 27km away at PA0A the signal is weak too weak something must be wrong? I made a simple reference dipole of 2x17cm CU wire.
With this dipole the signals where totally worse. So the Diamond does work?
I got curious to look inside. Maybe moisture penetration degraded the antenna.
This  antenna is rainwater close in its normal vertical mounting position. But take care if your mast can b…

Japan 160m FT8 , VP6D at topband

In Japan digimode is allowed 1907.5  to 1912.5 kHz only FUNK FA 11/18 1087
( posible in future i am thinking of writing in German language since the Brexit  why should we use Englisch ?)
JA TX  USB dial  1909kHz or 1907kHz   rx dial 1840kHz
EU send 1840kHz  RX  dial 1907 or 1909kHz where ever signals are seen.

Tonight i tried with succes for the first time with several JA stations 2-way FT8  heard HL  HL3GOB dial 1907
must say it is some time ago i have seen JA in CW at 160m
JA CW is only in the JA -window 1810 to 1825kHz  and that part is mostly occupied for us
In contest the only chance is calling S&P normaly and only the big guns can be worked
But in FT8 it is easy 100W!

i just set my K3 VFO A to   dial 1907kHz   mode DATA A
and VFO B to the usual 1840kHz

WSJT-x  setup   radio split operation must be none

but the K3 must be set to split  TX 1840 rx 1907 kHz thats all

 btw  this morning VP6D  was on topband weak but some QSB   1826.5 up
many EU heard calling  i had to wait a go…