PA0O ham radio

This 10MHz RF amplifier design is drawn and optimized for gain  using Multisim 10. This Electronic workbench program is a pleasure to work with. Circuits drawing modifying and testing is easy and quick.  The ease of drawing is even outperforming Schemeit the perfect free online circuit drawing tool offered by Digikey  But version 10 does have some problems.  In the process of optimizing it sudden can go wild. The virtual meters give strange impossible values. The output sudden drops from 1.5V AC  to a few uV When checking its own simulating credibility by placing a Voltmeter direct over its own the 5V supply, erroneous values are displayed. As if the electrical rule database behind is damaged. Could not find a tool to repair it.  Only way is to go back to the latest saved working model. Multisim is now at version 14. Possible this problem is solved in newer versions. The program is a bit too expensive for hobby only.  

13-7-2016   50.4358  D4C/B  hrd 569  HK76mv    evening  + ES  1 skip Italy I0 70MHz wspr 2016-07-08 01:52   PA0O   70.092550   -22   -2   JO33hg   5   M0NKA   IO92ak   583   264   2016-07-07 18:26   G6HSM   70.092474   -25   -3   JO01oe   1   PA0O   JO33hg   435   56   2016-07-07 15:12   PA0O   70.092549   -23   -4   JO33hg   5   DB0ZDF   JN49cx   382   163   2016-07-13 14:34   G3THQ   70.092540   -27   0   IO91un   5   G0MJI   IO83ni   265   320   2016-07-07 22:24   PA0JME   70.092424...

IARU HF Championship 2016 high activity   3117 log's received   71 from PA With SFI fixed at bottom line 95 propagation 10m was poor as expected. Last week  wspr best 160m dx 630km Surprised to hear anything at 28MHz. few  USA 21MHz  no USA 28MHz that's is the present state of the HF propagation But this can happen in a contest! Called  by   5H3EE  TANZANIA  80m 3519kHz RI1ANT n 80m CW in the contest ITU 69 good signal but constant callers made a simple contest QSO  impossible I do apologize  if I did call at the wrong time? there was a HQ station and an other one constant calling making a mesh and RI1ANT went QRT several times 2016 IARU HF World Championship Contest              Callsign: PA0O                        Single Operator Unlimited, CW Only, High Power           Reported QSOs: 92...

The ADF4351 PLL needs a  full TTL level  at 50OHm in the 10MHz reference. The internal TCXO delivers 5V pk  at the ADF reference port. Then the resulting signal at 1296 / 1152 MHz is a clean small carrier about 60dB S/N  at the SDR RTL stick Using  400mV tt  clean sinus signal from the amplified GPSDO ( 40mV pk) gave a broad raspy tone at the output port of the ADF I tried a MMIC demo ampl. with the MAR6  and INA10386 DC to 2GHz broadband amps   got a clean 40mV pk 10MHz  at the input of the INA  measuring 5V DC supply ,  2V bias at the output pin and  0.2V bias at the input pin of the INA10386,  normal levels. 40mV tt at the input resulting in 0V out.. coupling C 10nF  L 10uH Why this MMIC do not work for 10MHz ? i do not know yet maybe  my  10MHz  driving issue can be solved by a simple opamp or an other discrete part amplifier like the one below optimised in Mult...

Exciting spots 50MHz    W7 's worked in DL   nothing here.. JW7QIA  was only579   , more south everything was stronger JW7QIA was reported in ON  9+++   nothing new all seen before. JW7QIA  had huge pile working split worked before. Would been a new one on 70MHz ... but then only 599+ in ON and S-PA i am afraid  I heard 70.063 LA2VHF  559 JP53 then heard LB3AG would be a new call  cq 56 70.200   but he replied to an other PA3  much stronger of course and faded did QTF 0 CQ'n for some time in the hope something might possible over the North pole still we are close to the longest day  solstitium zonnewende  always the most interesting time for 50/70 MHz propagation . however last weeks we rarely had sun the longest day was overcast and rain. 6M was wide open OH SM2 ES LA JW7QIA  strong DL's backscatter working / reporting the rare W7 K7 west-coast square CN !! but i was in the mid...

This LENOVO X60  W10 upgrade   W10 W10 is working surprisingly well on this older laptop. it seems less slow and all installed programs working  fine after the upgrade.  2 problems solved  meanwhile The Lenovo X60 did wake-up with WLAN adapter working  after unchecking power save on that device And the 2nd WLAN router Eminent outside works after plugging the cable in the W-LAN port. it was always?  in 1 of the LAN ports  i thought But it has an issue with waking up the WLAN adapter after wakeup it connects to WLAN but "no internet" network diagnosis say  can not determen the problem the Intel(R) PRO/Wireless 3945ABG Network Connection adapter reports this device is working well. I know  I have to reboot the system to get the WLAN working again annoying  one way to trick this out is to select device  properties  and then change one of the many properties just one  of them  remember the chan...

When monitoring the ADF 1296.1 MHz on the 23cm DB6NT  it showes an ugly broad humming signal   switching the ADF to the  internal ref the signal is a  clear tone. This ADF REF input   needs a  10MHz  TTL 3V3 blok fomat  to drive ? Deja vue with the 23cm XTVR  of 30 years ago: The 96MHz X-tal  does not want to work at its designed frequency and is drifting in kHz range at 1152MHz. Since that project I avoid using single xtals since never ever they will work at the correct  frequency. Only use integrated Xtal ocillator modules since then And the NE325 Gaasfet preamp likes oscillating  way more  then amplifying  nothing is changed... I remember long time ago in the 80-ties when we still had exceptional tropo propagation to east EU A pile of  UA UR UC SP at 70cm CW  on 23cm there was UA3LBO but the 23cm Gaasfet preamp just could not handle the strong radar sweeps, every 10 seconds a radar...