PA0O ham radio

Today  digimode  JT65 and FT8   was tested at 23cm for first time here with Ole OZ2OE and Thorben OZ3ZW Signals strong but fast  QSB and Airplane scatter on top. FT8 seems to handle the fluttery signals best almost 100%  decoding in FT8 mode  while JT65 had some not decoded frames.                                                      JT65

Very well designed, high quality PCB all parts neatly packed. With the correct diagram relative easy to build. The newest PCB is June 2016 documentation pictures shown at Ebay are outdated  incredible  value for money 14$ Although could not yet test with RF  due too high bias Q2 0.6A - 0.7A even with shorted B-E  0.6A flowing Considering the very low prize  the supplied 2SC1971 might be a fake Mitsubishi does not longer produce this or replacements TO220 medium power RF transistors?  If someone could give a hint which eBay    2SC1971 good quality original Misubishi    is a real working one That would be much appreciated  left is the supplied "2SC1971" not working 0.6A and not adjustable bias right is a better working possible original Misubishi it is 1mm smaller  DutchRFshop With that one i could adjust the bias to 100mA   ( diagram below  R5=330 OHm)    the bias of...

several JA decoded this morning in JT65    signals too weak for FT8

Sunday AURORA 70MHz  recording GM4ZUK/P http://www.qsl.net/pa0oos/2017/GM4ZUK_4MAU.mp3 Installed the latest WSJT-X V.1.8.rc1 beta version on a W7 32b DELL D420 notebook It crashed few seconds  after start  several times  need to force stop with p.m. After rebooting PC it was ok with CAT to the K3 In between i started V1.6 again Frequency settings of  V1.6  where lost and needed reset to default. these setting are removed by V1.8  and vice versa. Then i had the first FT8 mode contacts  LX1JX groundwave dial 50.313 only ground wave with some MS enhanced scatter are possible in the present propagation dip. The frequency dial settings are depending to the selected  region  ,  1 2 3 or all They are different to   version 1.6        WSPR 50.293  JT65 50.276 Set to Region1  was  USB 50.310 as default JT65 not 276 in the band selection list box there are 3 6m entries when  r...

IC706 classic  was damaged by high RF at 144 input I use this old but very good rig as 146-148  i.f for 1296MHz  XVTR Receiving Graves at 143.050  pings and scatter i forgot to disconnect the VHF antenna   ( 3 band 6,4,2) when transmitting at 6m with the 7 el just underneath so it became very quiet at 23 / 144.. 144-148 /VHF input circuit part with 3-PIN antenna switch  and MA862 band switch that switches between 2 input filters. TOP = 60-200 MHz  down is 144-148 bandpass preselection in front of the    uPC1658G  wide band preamp MA862  bandswitch fried by high 50MHz signal at 144 /VHF input SO239 replaced by 2 BA891 bandswitch diodes Ebay  above temporary jumper to select 144-148 band pass filter without the bandswitch diodes the IC706 does not switch to the VHF filter when tuning outside the 144-148 range  a solution without bandswitch But the burned out  MA862 protected t...

very good 6m opening Monday 3 Juli 2017 many DX heard sorry not all heard DX resulted in 2-way because of  JT65 slow QSO rate Briefly  check of CW part but no promising sounding signals. wsjt log to search your decode ( 6m)  dx rules: 1 best DX is not during weekend's 2 good openings never repeat next day Als vanouds ná weekend  op maandag ochtend 6M band  open  voor DX Japan Korea China in het weekend was het dacht ik niet veel soeps. Antenne moet toch wel echt op QTF 030 voor JA Korea 3 stations  veel JA   China 2 stations , de 1e keer dat ik hier zelf China op het scherm zie. Nu lukte het met BA4SI   al vaak super zacht in CW gehoord  nu met JT65  wel. Heel vroeg open 07 UTC al eerder deze week heel vroeg rond 05 UTC  diverse USA gezien raar tijdstip voor USA  beste was Alabama en KC0  in EM25   ander  pad moeten zijn lange pad kan toch niet vanuit noord Nederland? Druk met...

Monday 26 June   A remarkable day! Noticed cluster spot's   DL  reporting  TA1D/3  144.300 I switched on the old FT225RD  ( 30W USB 20W CW/FM) antenna  DK7ZB 223  ( 2e 4m / 6m  3e 2m  mini antenna  f.b!) After some time listening  some DL's calling at 144.300 And sudden woow TA1D/3  calling cq  Kadri from KM39BP  West Turkye coast  In and out  i called several times  then signal became stronger S7 and QSO woow  Turkye on 2m  never heard before even not in the golden ES years  of the 90's audio recording TA1D/3 https://pa0o.stackstorage.com/s/3aB6JfAYL1jRTpj Monday band was very quiet few hams only no big pile Working hams could not be QRV Sorry for the working class this type of special DX occasions always seem to happen outside the weekends.  In the past  the interesting DX at 6m allway happens at working days.  2/7 * 100%  30% would be the week...