Refurbishing my Galazy GT550
"Paul P" REMOVE paul @ REMOVE ppinyot . REMOVEcom wrote in message
...
And check all the carbon composition resistors for tolerance.
They tend to drift higher. If you replace any resistors use a non
inductive resistor (carbon compositions) in circuits
above....say...18mhz or less.
Ordinary film resistors, either carbon film or metal film, will work
fine. The inductance is not significant unless the value is below 100
ohms. Above this value,
shunt capacitance dominates the impedance. A ten ohm resistor starts
becoming inductive around 20 MHz and a 1 ohm resistor starts becoming
inductive over 1 MHz. If your email works, I'll send you some graphs.
73, Barry WA4VZQ
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