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Showing posts from May, 2020

28Mhz today

Next   Call sign Worked Date/Time Band Mode Freq QSL Details PA0O EA4HGR 2020-05-16 10:38:00 10M FT8 28.07512 SPAIN Details PA0O R9JAC 2020-05-16 10:33:00 10M FT8 28.07512   Details PA0O R1AV 2020-05-16 10:29:30 10M FT8 28.07512 EUROPEAN RUSSIA Details PA0O BH4QYX 2020-05-16 10:27:30 10M FT8 28.07512 CHINA Details PA0O BG5EEF 2020-05-16 10:21:00 10M FT8 28.07512 CHINA Details PA0O EA5WP 2020-05-16 10:17:00 10M FT8 28.07512   Details PA0O R1AP 2020-05-16 10:15:00 10M FT8 28.07512   Details PA0O JH3QMF 2020-05-16 10:12:00 10M FT8 28.07641 JAPAN Details PA0O PA2DX 2020-05-16 08:17:00 10M FT8 28.07474   Details PA0O RA1AMX 2020-05-16 08:12:30 10M FT8 28.07474   Details PA0O R2AW 2020-05-16 07:58:15 10M FT8 28.07474   Details PA0O OH7AWS 2020-05-16 07:55:15 10M FT8 28.07474 FINLAND Details PA0O UA9CQV 2020-05-16 07:53:15 10M FT8 28.07474   Details PA0O RX9WN 2020-05-16 07:52:15 10M FT8 28.07474   Details PA0O RA9J 2020-05-16 07:46:45 10M FT8 28.07474   Details PA0

FT225RD, FT902 repair

Old rigs of s.k. Eltje PA3CEE  here for check and repair The rig's looked like they have been working in a brown cafe for years He was a real smoker ... the "tank"  FT902DM  very heavy rig permeability tuning  very well build equipment. Plug-in modules.  The standard twin 6146 PA seen in most most older transceivers until 30 years or so ago shown under power with filaments on. Dangerous  be aware !  950V  and 350V are also present at the ACC  backside socket for external use  In the age of SSPA used to low voltages where  touching a working circuit is safe. Working with high voltages is extra dangerous nowadays. The socket board of the PA the brown C looks high-quality is a known issue of the FT902. This 100pf /1kV is to separate 350V  12BY7 driver ANODE  from the delicate  6146 grids -100 150 !  practical a wire direct from the driver anode is leadingto this C1   If shorted the PA wil blow the fuse shortly after the heaters are switched in

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