Skip to main content

80 and 160 came back alive again

20110201 2010 1822,0 CW PA0O 559 VK3HJ 579  return on cq
several JA's heard  VK4MA heard good just before  QRT
160m seems a bit alive again after not hearing any DX for long time even WSPR was poor on 160 for weeks.

20110201 2247 1850,0 LSB PA0O 59 K8PO 57 Paul in Phone
20110202 1743 10102,5 CW PA0O 599 XT2RJA 599
20110202 1822 3511,0 CW PA0O 599 T88ZM 599
T88ZM very strong on 80 CW peaking 599 hard to believe that it was real PALAU Isl and  heard short on 160m
Lots of tuning as always on 80m this DX attacks lot of QRI

3503,5 CW PA0O 599 BU2AQ 599
20110202 2141 7024,0 CW PA0O 599 VP8ORK 599
VP8ORK had a good signal at 30m  but they went  QRT/X   by the time I was just ready to call them... 2 x in a row..

WD2XSH/17 most nights at 0.501500 WSPR several decodes


Popular posts from this blog

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…

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 …

Nice opening10m and 12m to S.A.

SFI  low 70 a 16 K3  still 10m opened up in afternoon to N-Italy EA5 F JN33
F/PD0OHW/M in JN33 decoded 150mW

VP8LP  12m    2-way with GP 7m ag swr 1:3

60m 5,362 open to ZL every? morning