09-21-2011, 07:30 AM
W9WDX Amateur Radio Club Member
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Join Date: Jun 2009
Originally Posted by donemad
Also there is a jumper that runs from pins 2 to pin 6 on the pre-driver and the other two drivers that connect to the finals, but I can,t seem to see what that is! Is it a resistor or coil? .....talking about the 47 ohm, what wattage is it? Also that resistor or coil looks like a 22ohm resistor, but what wattage? But it may be a coil, can,t tell, it is burnt to bad.........thanks for any help
Schematic does not give me wattage for the resistors, 1 or 2 Watt would be a safe bet.
the 22 thing is a choke, 22 microhenry choke most likely, do you see how the 22 symbol is different than the 47 resistor symbol? http://www.cbtricks.com/Amp/maco/mac...redraw_sch.pdf
Link to better schematic, first one had some flaws in it.
I can not tell for sure but if it is a 22 thingy it is an choke on the pins two and 6 most likely. Maybe some other member will post who has a Maco 750, I have the baby brother the Maco 200 sitting on the shelf in the shack.