Skip to main content

Propagation is too good!

Getting used to good propagation is a quicker process then getting used to poor bands..
Again this morning/day 28MHz is complete filled with stations from 28.0 to 29.7  and even higher it is buzzing.

Only was listening 29.650 FM.  USA and JY4NE TA etc etc
The Steppir is doing fine but SWR is high at 29MHz and I could not tune it yet.
Tried long with TX7M on 40m but they could not hear EU  working JA and W's  559 signal good copy long time.

TX7M  now worked on 10/12/15/17/20/30
TX3T    4 slots
3XY1D   160m open
T32C  17 slots  not hrd on 80/160

Used DELL LATITUDE D420  notepad where offered 135€ at the "Dag van de radioamateur" radio market Saturday. 
Could not resist to purchase one. A low power/weight PC for WSPR intalled W7-pro.
I fact I like the screen 1280X800  is better readable then the 1980x1080 ...

WSPR 2.21 works okay using the internal sounddevice.
After adusting the line in  what is more complex in W7 compared to XP.
The ICOM IC706    tuned 80Hz up to correct the freq  
28124.680 kHz   output "L"  means little over 2W @ 28MHz

The homemade CV-I interface works with WSPR  but only if the DTR line is disconnected.  RTS is used for T/R
Therefore  I use a simple 1:1 back to back D9m-D9female interface leaving pin 1 6 and 9 open.
For N1MM logger pin 6 is needed  for CW keying.
So for N1MM the "interface" is not used.

And I purchased a Rusian tuning unit for lowbands  500kHz  Hoping we get a permission for 500kHz again.  Possible I can use it at 137kHz aswell .
It is a variometer L  with switchable taps.
125mm diam   L1= 22wdg    L2  71wdg 
and 2x  13wdg 100mmdiam  Vario L in between



Comments

Archive

Show more

Popular posts from this blog

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

Having relative poor signals on the local 70cm / 2m channels using this X50 Diamond collinear 70/2  1m 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. My antenna uses SO239 connector UHF type semi air spaced isolator.  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 n...

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 adjuste...

BIJZEN mast en ontwerp fouten.

In 2013 heb ik een Bijzen aluminium mast 3 x7m  opgehaald  bij iemand die hem niet mocht plaatsen Gemeente Oss  dat zegt misschien al genoeg.. Pas in 2018 heb ik hem geplaatst had ik veel eerder moeten doen. Mooie mast, mijn xyl vond hem zelfs mooi. Hij is licht, de 3 delen wegen  235kg  het vaste deel 102kg dus het te lieren gedeelte weegt   slechts 133kg + ca 50kg rotor + antennes etc.  De elektrische lier is wel erg zwaar 30kg misschien wel maar die zit onder    Antenne  3ele Steppir  19kG  +  G2500DXC rotor: 3.6kg  + rotorbuis 12 kg  +  kabels 10kg  + 5/7 ele 6m beam. ongeveer 50kg Je moet niet te dichtbij  kijken, dan valt op dat het Aluminium lastwerk heel slordig is gedaan, scherpe bramen aan de lassen waar kabels door kunnen worden beschadigd of haken Er is zeer ! weinig ruimte voor de rotor een YAESU G2500DX past net maar dan ook net  met beetje buigen van  kruisverband. Het...