[R-390] HP And Other Signal Generators

[2002tii]

>Nobody knew how to build Wien bridge oscillators and RF signal 
>generators like HP.

No, but good as they were, they had their own problems.  The 200 CD 
suffers from ground loop and leakage hum that is not horrible, but is 
20-30 dB above what it ought to have been.  The solid state ones were 
way noisier than they should have been.

>General Radio stuff was big and heavy and black... and was in a lot 
>of labs... but was nowhere near the high bar that the HP stuff set 
>for equipment usable in field service.

My 805-C and 1606-A got hauled to innumerable transmitter sites over 
the years, as did many, many others.  I don't think HP even had an RF 
bridge until after it bought Boonton in 1959 and acquired the 250-A, 
which was less suited to field use than the GRs.

Best regards,

Don