[R-390] Receiver restoration

[Flowertime01 at wmconnect.com]

Takis SV1FJL,

There are meters available that have the correct size and form fit.

You can replace the meter face plate with a printed copy and a glue stick.

You can rework the resistor bridge resistors to allow the new meter to read 
close to good line level values.

For the carrier meter an IC OP AMP is used to scale the meter voltage from 
the tube circuit to drive the replacement meter to proper scale value. It takes 
some math and basic knowledge to get it done.

Exact replacement old but working meters cost. It becomes a quest.

Happy to hear you have the receiver working.


Fair Radio was selling a meter with a bridge as a kit that makes a SWR meter.
The meter is the same size and face plate as the R390 meters. I ordered two 
kits to get the meters to install into a Blue stripper I brought from Fair 
Radio. You mite look and see if these kits are still available for the meters. I 
have not installed mine and worked through the modifications needed to get them 
working. My next project when I get the house remodeled.

Roger AI4NI


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