Skip to main content

144 200W PA WSPR report


Below is the MRF186 VHF 100W PA eBay  2 x parallel coupled
excellent quality kit
High quality well designed PCB
Remarkable it covers 3 VHF bands 6m 4m  and 2m   100W
The PCB includes a 3 stage LPF and SWR bridge.
This is how all PCB designs for VHF / UHF should be!
Lot of tropo DX  at 144.174  last year with just 10 or 8W in FT8
13 dB more ERP  will let me reach the weaker DX running more then QRP..


see building report Jon Joyce GM4JTJ
The SWR bridge forward level is about 4V at 100W 144MHz .
Measured at board 26.5V 6.5A delivers about 100W  drive 3W 50MHz  1W drive  50W
with 28V easy 100W my power supply 27.2V dropped over wiring to 26.5V
2 boards parallel deliver 200W / 26V 12A  at 144MHz   about 4W drive
The used balun type  50 to 2 x 50OHm  couplers do not work at 50MHz
It is a ferite binoculair core  with a single loop teflon 50Ohm thin coax (1 turn # 3uH )
It must be possible to modify this balun to work for 6 4 and 2 m using 2 turns f.i.
Possible I test that but my goal was a 144MHz PA with reasonable power.
The supplied coax pieces 50Ohm red 18.5mm  i kept the shielded length at 17cm
The 25 Ohm pieces supplied 1 kit had 2.2mm  36cm the other 2.5mm  35cm
I kept the shield about 16.5 cm at little longer then GM4JTJ 15cm
Possible  better for 50 Mhz? aldough GM4JTJ also putts 100W out at 50MHz


--------------------------------------------------------------------------------------------------
TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz# Spots
 2019-02-05 16:44  VK7DIK  3.570141  -21  0  QE38cu  5  PA0O  JO33hg  16733  308  2 
 2019-02-05 07:08  IF1VCP  3.570098  -12  0  RI77  0.01  PA0O  JO33hg  14271  351  1 
 2019-02-05 12:10  PA0O  21.096152  -23  0  JO33hg  2  DP0GVN  IB59uh  13835  186  5 
 2019-02-04 20:16  YB3PET  5.288697  -18  0  OI62jr  10  PA0O  JO33hg  11727  323  34 
 2019-02-05 12:20  PA0O  21.096160  -26  0  JO33hg  2  PY2PE  GG66se  9975  227  2 
 2019-02-05 04:22  W1CK  3.570004  -30  0  DM13ie  5  PA0O  JO33hg  8987  30  2 
 2019-02-05 07:06  WM6Z  3.570097  -24  0  DM22  5  PA0O  JO33hg  8948  31  2 
 2019-02-05 07:00  AE5X  3.570176  -25  0  EM20jb  0.2  PA0O  JO33hg  8097  38  8 
 2019-02-05 03:50  N1FXP  1.837994  -27  0  EL86xq  5  PA0O  JO33hg  7576  40  18 
 2019-02-05 04:42  WA4SZE  0.475703  -24  0  EM65  0.2  PA0O  JO33hg  7147  41  10 
 2019-02-05 07:26  KS0FT  3.570166  -21  0  EN42fa  5  PA0O  JO33hg  6866  42  14 
 2019-02-05 07:26  AA0N  3.570029  -17  0  EN42fb  5  PA0O  JO33hg  6862  42  1 
 2019-02-05 04:42  KC9NBV  3.570043  -15  0  EM69oe  1  PA0O  JO33hg  6827  43  16 
 2019-02-05 06:42  WA9EIC  3.570089  -28  0  EN60ed  5  PA0O  JO33hg  6797  43  1 
 2019-02-05 06:16  K9PAW  1.838190  -24  0  EN61ar  1  PA0O  JO33hg  6688  43  4 
 2019-02-05 07:26  K3GAU  3.570079  -18  0  EM89cv  2  PA0O  JO33hg  6593  44  21 
 2019-02-05 06:24  KB8EZX  3.570047  -18  1  EN91dk  5  PA0O  JO33hg  6347  45  20 
 2019-02-04 22:36  W8AC  3.570030  -5  0  EN91jm  5  PA0O  JO33hg  6311  46  26 
 2019-02-05 03:48  KJ4YBS  1.838095  -23  0  FM28bh  5  PA0O  JO33hg  6235  46  15 
 2019-02-05 06:22  K3FOX  3.570173  -22  0  FM19qf  5  PA0O  JO33hg  6211  46  5 
 2019-02-05 07:00  W3UTD  3.570166  -20  1  FN10ni  1  PA0O  JO33hg  6139  46  7 
 2019-02-05 06:18  KA2ENE  3.570108  -23  0  FN13fe  5  PA0O  JO33hg  5965  48  14 
 2019-02-04 23:42  KK1D  3.570038  -13  0  FN31vi  1  PA0O  JO33hg  5776  48  3 
 2019-02-05 06:22  WA9WTK  3.570062  -18  0  FN42fk  5  PA0O  JO33hg  5654  49  8 
 2019-02-05 03:50  AA1A  0.475673  -29  0  FN42pb  1  PA0O  JO33hg  5630  49  6 


WSPR last 24 hours  630 160 80
yesterday was the first time i had no T.A. decodes at 475kHz  in this season.
last night a bit better but the earth magnetic field is disturbed a lot.

Timestamp Call MHz SNR Drift Grid Pwr ReporterR Grid km az # Spots 2019-02-01 17:36  PA0O  3.570151  -24  0  JO33hg  2  ZL2IK  RF74ci  17829  31  5  2019-02-01 17:30  PA0O  3.570151  -25  0  JO33hg  2  VK3KHZ  QF22pe  16434  78  5  2019-02-01 20:58  9S5WTC  1.838101  -10  0  OI10  5  PA0O  JO33hg  11275  323  1  2019-02-01 17:56  PA0O  3.570150  -26  0  JO33hg  2  9M2CNC  OJ03  9985  84  3  2019-02-02 07:42  PA0O  3.570152  -24  0  JO33hg  2  TI4JWC  EK70wb  9162  277  7  2019-02-02 02:10  AE5X  3.570175  -26  0  EM20jb  0.1  PA0O  JO33hg  8097  38  1  2019-02-02 02:24  6Y5NZ  3.570100  -11  0  FK18mj  5  PA0O  JO33hg  7957  39  1  2019-02-02 04:48  N1FXP  1.837994  -25  0  EL86xq  5  PA0O  JO33hg  7576  40  8  2019-02-02 07:42  PA0O  3.570157  -24  0  JO33hg  2  WB2TQE  EL96  7530  285  7  2019-02-02 07:42  PA0O  3.570152  -22  0  JO33hg  2  W1NEJ  EL96xi  7476  284  10  2019-02-02 00:08  KJ4IIH  3.570103  -18  1  EL88wv  5  PA0O  JO33hg  7395  41  3  2019-02-02 01:42  PA0O  3.570153  -20  0  JO33hg  2  WB4ROX  EL98qa  7373  286  2  2019-02-02 02:08  W4BCX  0.475660  -27  0  EL98pd  5  PA0O  JO33hg  7368  41  1  2019-02-02 01:12  WA4SZE  0.475703  -26  0  EM65  0.2  PA0O  JO33hg  7147  41  1  2019-02-02 07:22  KS0FT  3.570166  -23  0  EN42fa  5  PA0O  JO33hg  6866  42  9  2019-02-02 01:42  PA0O  3.570151  -22  0  JO33hg  2  K9AN  EN50wc  6829  300  9  2019-02-02 07:48  KC9NBV  3.570043  -20  0  EM69oe  1  PA0O  JO33hg  6827  43  23  2019-02-02 07:12  PA0O  3.570158  -23  0  JO33hg  2  KC9NBV  EM69oe  6827  298  6  2019-02-02 07:42  PA0O  3.570153  -22  0  JO33hg  2  AC4ML  FM04ce  6809  290  5  2019-02-02 02:22  PA0O  3.570155  -29  0  JO33hg  2  KU4A  EM78  6781  297  2  2019-02-02 01:26  K9PAW  1.838190  -25  0  EN61ar  1  PA0O  JO33hg  6688  43  1  2019-02-02 03:08  N8MIQ  3.570095  -19  0  EM79ti  5  PA0O  JO33hg  6671  44  3  2019-02-02 00:42  PA0O  3.570151  -24  0  JO33hg  2  K3GAU  EM89cv  6593  297  1  2019-02-02 07:44  K3GAU  3.570079  -18  0  EM89cv  2  PA0O  JO33hg  6593  44  19  2019-02-02 07:16  KD8WBZ  3.570019  -27  0  EN81dn  5  PA0O  JO33hg  6455  45  1  2019-02-02 07:50  N8NJ  3.570131  -21  0  EN81go  1  PA0O  JO33hg  6437  45  12  2019-02-02 05:10  N8AYY  3.570053  -12  0  EN72wd  5  PA0O  JO33hg  6434  45  3  2019-02-02 03:32  PA0O  3.594159  -23  0  JO33hg  2  N8AYY  EN72wd  6434  299  5  2019-02-02 07:38  KB8EZX  3.570080  -18  0  EN91dk  5  PA0O  JO33hg  6347  45  25  2019-02-02 00:16  W8AC  1.838031  -25  0  EN91jm  5  PA0O  JO33hg  6311  46  10  2019-02-02 03:32  PA0O  3.570114  -24  0  JO33hg  2  W0QV  FM18kx  6261  292  4  2019-02-02 07:34  W0QV  3.570135  -16  0  FM18kx  5  PA0O  JO33hg  6261  46  22  2019-02-02 04:56  KJ4YBS  1.838097  -22  0  FM28bh  5  PA0O  JO33hg  6235  46  6  2019-02-02 00:52  PA0O  1.838153  -24  0  JO33hg  2  KJ4YBS  FM28bh  6235  290  1  2019-02-02 07:42  PA0O  3.570152  -22  0  JO33hg  2  KC3MNH  FM19hr  6218  293  6  2019-02-02 07:42  PA0O  3.570157  -26  0  JO33hg  2  N3BBF  FM19  6217  292  2  2019-02-02 07:42  PA0O  3.570152  -18  0  JO33hg  2  K3FOX  FM19  6217  292  4  2019-02-02 07:02  K3FOX  3.570173  -23  0  FM19qf  5  PA0O  JO33hg  6211  46  3  2019-02-02 07:42  PA0O  3.570153  -18  0  JO33hg  2  WA2EUJ  FM19qh  6204  292  5  2019-02-02 07:42  PA0O  3.570155  -18  0  JO33hg  2  KD4IZ  FM19oo  6192  292  7  2019-02-02 07:50  W3UTD  3.570168  -16  0  FN10ni  1  PA0O  JO33hg  6139  46  17  2019-02-02 00:08  W3HZL  3.570091  -10  0  FN20av  5  PA0O  JO33hg  6042  47  6  2019-02-02 02:22  PA0O  3.570163  -16  0  JO33hg  2  W3HZL  FN20av  6042  293  2  2019-02-02 07:42  PA0O  3.570153  -25  0  JO33hg  2  VE3SST  FN03jr  6023  297  4  2019-02-02 07:42  PA0O  3.570152  -15  0  JO33hg  2  KD2OM  FN12gx  5975  296  21  2019-02-02 07:42  PA0O  3.570152  -28  0  JO33hg  2  WA2ZKD  FN13ed  5973  296  6  2019-02-02 00:08  WA2TPQ  3.570126  -15  0  FN12tk  5  PA0O  JO33hg  5951  48  2  2019-02-02 00:42  PA0O  3.570149  -18  0  JO33hg  2  WA2TPQ  FN12tk  5951  294  1  2019-02-02 07:42  PA0O  3.570152  -19  0  JO33hg  2  N2NOM  FN22bg  5933  294  17  2019-02-02 03:32  PA0O  3.570156  -18  0  JO33hg  2  N2HQI  FN13sa  5912  295  23

last 2 weeks 21 MHz

TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz# Spots
 2019-01-23 14:20  PA0O  21.096151  -22  0  JO33hg  2  DP0GVN  IB59uh  13835  186  1 
 2019-01-23 11:14  PA0O  21.096154  -19  0  JO33hg  2  ZS6ETA  KG44cd  9042  160  6 
 2019-01-31 10:48  PA0O  21.096100  -27  0  JO33hg  2  VU3KAZ/B  MK82tu  7606  97  1 
 2019-01-22 10:26  PA0O  21.096093  -25  0  JO33hg  2  VU3KAZ  MK82tu  7606  97  6 
 2019-01-23 13:54  N2IXX  21.096008  -21  0  EM93jv  5  PA0O  JO33hg  6921  42  1 
 2019-01-21 09:28  PA0O  21.096158  -3  0  JO33hg  2  EA8BFK  IL38bo  3213  220  66 
 2019-02-01 11:02  TA4/G8SCU  21.096086  -5  0  KM56ov  5  PA0O  JO33hg  2629  322  1 
 2019-02-01 11:00  PA0O  21.096171  -10  0  JO33hg  2  TA4/G8SCU  KM56ov  2629  124  1 
 2019-01-24 09:42  UA6AAK  21.096102  -24  0  KN96  0.2  PA0O  JO33hg  2413  300  3 
 2019-01-24 10:54  PA0O  21.096160  -4  0  JO33hg  2  EA7/DL8FCL  IM76al  2107  213  2 
 2019-01-24 10:10  UR5FKG  21.096006  -18  0  KN56  0.01  PA0O  JO33hg  1888  302  1 
 2019-02-01 11:00  PA0O  21.096155  -23  0  JO33hg  2  IZ6BYY  JN62wv  1272  152  2 
 2019-01-30 09:48  PA0O  21.096199  -22  0  JO33hg  2  9A5PH  JN73tt  1241  144  1 
 2019-01-24 10:54  PA0O  21.096161  -23  0  JO33hg  2  SM0IFP  JO99cf  973  42  1 
 2019-01-24 10:54  PA0O  21.096158  -26  0  JO33hg  2  F4FPR  IN88di  907  237  1 
 2019-02-03 09:26  PA0O  21.096142  -26  2  JO33hg  2  F59706/1  JN07th  751  210  1 
 2019-01-24 09:48  PA0O  21.096155  -21  0  JO33hg  2  DK8FT/B  JN58oe  651  148  5 
 2019-02-01 09:24  PA0O  21.096156  -23  0  JO33hg  2  M0DSZ  IO82ls  648  269  2 
 2019-01-24 10:32  PA0O  21.096155  -21  0  JO33hg  2  G3ZIL/K  IO90hw  604  248  3 
 2019-01-24 10:54  PA0O  21.096153  -20  0  JO33hg  2  M0CLH  IO91ho  573  254  1 
 2019-01-24 10:54  PA0O  21.096172  -24  0  JO33hg  2  DC7JZB  JO62qj  464  99  1 
 2019-02-01 09:24  PA0O  21.096156  -18  0  JO33hg  2  DK6UG  JN49cm  431  165  3 
 2019-01-24 08:32  PA0O  21.096155  -19  0  JO33hg  2  DL0LU  JN49cm  431  165  6 
 2019-01-24 10:54  PA0O  21.096154  -16  0  JO33hg  2  OZ7IT  JO65df  428  57  3 
 2019-01-24 10:32  PA0O  21.096155  -19  0  JO33hg  2  LX1DQ  JN39cq  399  184  11 
 2019-01-24 10:32  PA0O  21.096154  -21  0  JO33hg  2  DG7FAC  JO40oe  386  152  5 
 2019-01-24 10:32  PA0O  21.096188  -23  0  JO33hg  2  DK4RW  JO40oe  386  152  5 
 2019-01-24 10:54  PA0O  21.096163  -25  0  JO33hg  2  DK4RH  JO31mb  247  173  1 
 2019-01-24 09:48  PA0O  21.096175  -25  0  JO33hg  2  DL1KAI  JO42vj  234  113  3 
 2019-01-24 10:32  PA0O  21.096103  -25  0  JO33hg  2  ON7KB  JO21  229  210  2 
 2019-01-24 10:54  PA0O  21.096147  -17  0  JO33hg  2  ON7KO  JO21  229  210  2 
 2019-01-24 10:32  PA0O  21.096145  -24  0  JO33hg  2  DF5FH  JO42um  223  111  2 
 2019-01-24 10:32  PA0O  21.096209  -27  -1  JO33hg  2  DK8JP/1  JO31gk  204  182  2 
 2019-01-23 14:50  PA0O  21.096159  -21  -4  JO33hg  2  PI4THT  JO32kf  117  172  2 
 2019-01-23 08:12  PA0O  21.096152  -24  -3  JO33hg  2  DK0DLR/1  JO43am  98  73  7 
 2019-01-21 08:22  PA0HAH  21.096096  -17  0  JO33bg  2  PA0O  JO33hg  33  90  27 
 2019-01-24 11:34  PA0O  21.096158  -12  0  JO33hg  2  PD0OHW  JO33lc  29  130  10 
 2019-01-21 08:14  PA0O/P  21.095997  -18  0  JO33lc  5  PA0O  JO33hg  29  310  264 
 2019-02-03 16:24  PA3BHT  21.095943  +4  0  JO33li  5  PA0O  JO33hg  24  247  1 
 2019-01-30 12:16  PA0GAB  21.096027  -21  -4  JO33ge  0.2  PA0O  JO33hg  11  31  18

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 normal vertical mounting posit

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 cir

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 Rotor platform kan wel een meter hoger dat geeft meer  buislengte boven het zit nu op 3.5 meter van het