[R-390] Low Noise Tubes

[Jim Brannigan]

The first RF tube sets the noise floor for the entire radio.
If you pull the RF tube you should hear a decrease in noise.  If not there
is work to do.
Start with an alignment, check voltages and replace components as necessary.
Jim
----- Original Message ----- 
From: "Dave Faria" <Dave_Faria@hotmail.com>
To: "r-390" <r-390@mailman.qth.net>
Sent: Thursday, June 05, 2003 14:08
Subject: [R-390] Low Noise Tubes


> How would you select tubes for low noise and get performance???
>
> Thanks Dave Faria