What you need Andy are some of these slim little resistors that you find in KB radios from the early to mid 1930's. 
Even after 85 years or so they are still spot on, well almost.
The lower value ones are normally wire wound like this 300 ohm one, still spot on at 300 ohms
The higher value ones are what look like a spiral wound carbon element on a ceramic former.
This 100k resistor still comes out at 102k ohms. What is that 2% out?
They only ever seem to need replacing if they have burnt out due to excessive current caused by leaky capacitors.
It is a shame because they started to be replaced with the more standard fat dog bone ones from about 1934, and they are hopeless, I have changed every one of them in the KB 381 I have been restoring over the last couple of weeks, the only original resistors are these two seen here.
Mike
Even after 85 years or so they are still spot on, well almost.
The lower value ones are normally wire wound like this 300 ohm one, still spot on at 300 ohms
The higher value ones are what look like a spiral wound carbon element on a ceramic former.
This 100k resistor still comes out at 102k ohms. What is that 2% out?
They only ever seem to need replacing if they have burnt out due to excessive current caused by leaky capacitors.
It is a shame because they started to be replaced with the more standard fat dog bone ones from about 1934, and they are hopeless, I have changed every one of them in the KB 381 I have been restoring over the last couple of weeks, the only original resistors are these two seen here.
Mike
